./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1540011488

<...>
id 18509] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18509] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18508] <... futex resumed>)        = 0
[pid 18508] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18508] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18509] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18509] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18509] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18508] <... futex resumed>)        = 0
[pid 18508] exit_group(0)               = ?
[pid 18509] <... futex resumed>)        = ?
[pid 18509] +++ exited with 0 +++
[pid 18508] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18508, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18510 attached
 <unfinished ...>
[pid 18510] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18510] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18510] setpgid(0, 0)               = 0
[pid 18510] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18510
[pid 18510] <... openat resumed>)       = 3
[pid 18510] write(3, "1000", 4)         = 4
[pid 18510] close(3)                    = 0
executing program
[pid 18510] write(1, "executing program\n", 18) = 18
[pid 18510] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18510] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18510] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18510] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18510] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18510] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18510] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18511 attached
 => {parent_tid=[18511]}, 88) = 18511
[pid 18510] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18510] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18510] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18511] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18511] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18511] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18511] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18510] <... futex resumed>)        = 0
[pid 18510] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18510] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18511] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18511] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18510] <... futex resumed>)        = 0
[pid 18510] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18510] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18511] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18511] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18510] <... futex resumed>)        = 0
[pid 18510] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18510] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18511] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18511] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18510] <... futex resumed>)        = 0
[pid 18510] exit_group(0)               = ?
[pid 18511] +++ exited with 0 +++
[pid 18510] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18510, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18512
./strace-static-x86_64: Process 18512 attached
[pid 18512] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18512] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18512] setpgid(0, 0)               = 0
[pid 18512] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18512] write(3, "1000", 4)         = 4
[pid 18512] close(3)                    = 0
[pid 18512] write(1, "executing program\n", 18executing program
) = 18
[pid 18512] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18512] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18512] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18512] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18512] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18512] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18512] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18513 attached
 => {parent_tid=[18513]}, 88) = 18513
[pid 18512] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18513] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18513] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18513] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18512] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18512] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18513] <... futex resumed>)        = 0
[pid 18513] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18512] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18513] <... 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 18513] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18512] <... futex resumed>)        = 0
[pid 18512] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18512] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18513] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18513] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18512] <... futex resumed>)        = 0
[pid 18512] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18512] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18513] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18513] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18512] <... futex resumed>)        = 0
[pid 18512] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18512] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18513] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18513] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18512] <... futex resumed>)        = 0
[pid 18512] exit_group(0)               = ?
[pid 18513] +++ exited with 0 +++
[pid 18512] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18512, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18514 attached
, child_tidptr=0x55557c828690) = 18514
[pid 18514] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18514] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18514] setpgid(0, 0)               = 0
[pid 18514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18514] write(3, "1000", 4)         = 4
[pid 18514] close(3executing program
)                    = 0
[pid 18514] write(1, "executing program\n", 18) = 18
[pid 18514] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18514] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18514] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18514] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18514] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18514] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18514] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18515 attached
 => {parent_tid=[18515]}, 88) = 18515
[pid 18515] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18514] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18515] <... set_robust_list resumed>) = 0
[pid 18514] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18515] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18514] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18515] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18514] <... futex resumed>)        = 0
[pid 18515] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18514] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18515] <... 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 18515] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18514] <... futex resumed>)        = 0
[pid 18515] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18514] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18515] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18514] <... futex resumed>)        = 0
[pid 18515] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18514] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18515] <... futex resumed>)        = 0
[pid 18514] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18515] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18514] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18515] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18514] <... futex resumed>)        = 0
[pid 18515] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18514] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18515] <... futex resumed>)        = 0
[pid 18514] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18515] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18514] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18515] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18514] <... futex resumed>)        = 0
[pid 18514] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18515] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18514] <... futex resumed>)        = 0
[pid 18515] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18514] exit_group(0 <unfinished ...>
[pid 18515] <... futex resumed>)        = ?
[pid 18514] <... exit_group resumed>)   = ?
[pid 18515] +++ exited with 0 +++
[pid 18514] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18514, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18516
./strace-static-x86_64: Process 18516 attached
[pid 18516] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18516] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18516] setpgid(0, 0)               = 0
[pid 18516] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18516] write(3, "1000", 4)         = 4
[pid 18516] close(3)                    = 0
[pid 18516] write(1, "executing program\n", 18executing program
) = 18
[pid 18516] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18516] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18516] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18516] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18516] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18516] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18516] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18517 attached
 => {parent_tid=[18517]}, 88) = 18517
[pid 18517] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18516] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18517] <... set_robust_list resumed>) = 0
[pid 18516] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18517] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18516] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18517] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18516] <... futex resumed>)        = 0
[pid 18517] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18516] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18517] <... 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 18517] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18516] <... futex resumed>)        = 0
[pid 18517] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18516] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18517] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18516] <... futex resumed>)        = 0
[pid 18517] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18516] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18517] <... futex resumed>)        = 0
[pid 18516] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18517] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18516] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18517] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18516] <... futex resumed>)        = 0
[pid 18517] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18516] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18517] <... futex resumed>)        = 0
[pid 18516] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18517] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18516] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18517] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18516] <... futex resumed>)        = 0
[pid 18517] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18516] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18517] <... futex resumed>)        = 0
[pid 18516] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18517] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18516] exit_group(0)               = ?
[pid 18517] <... futex resumed>)        = ?
[pid 18517] +++ exited with 0 +++
[pid 18516] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18516, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18518 attached
 <unfinished ...>
[pid 18518] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18518
[pid 18518] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18518] setpgid(0, 0)               = 0
[pid 18518] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18518] write(3, "1000", 4)         = 4
[pid 18518] close(3)                    = 0
executing program
[pid 18518] write(1, "executing program\n", 18) = 18
[pid 18518] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18518] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18518] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18518] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18518] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18518] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18518] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18519 attached
 => {parent_tid=[18519]}, 88) = 18519
[pid 18519] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18518] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18519] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18518] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18519] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18518] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18519] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18518] <... futex resumed>)        = 0
[pid 18519] <... 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 18518] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18519] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18518] <... futex resumed>)        = 0
[pid 18519] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18518] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18518] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18519] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18519] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18518] <... futex resumed>)        = 0
[pid 18519] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18518] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18519] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18518] <... futex resumed>)        = 0
[pid 18519] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18518] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18519] <... futex resumed>)        = 0
[pid 18518] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18519] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18518] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18519] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18518] <... futex resumed>)        = 0
[pid 18519] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18518] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18519] <... futex resumed>)        = 0
[pid 18518] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18519] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18518] exit_group(0 <unfinished ...>
[pid 18519] <... futex resumed>)        = ?
[pid 18518] <... exit_group resumed>)   = ?
[pid 18519] +++ exited with 0 +++
[pid 18518] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18518, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18520 attached
 <unfinished ...>
[pid 18520] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18520] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18520] setpgid(0, 0)               = 0
[pid 18520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18520
[pid 18520] <... openat resumed>)       = 3
[pid 18520] write(3, "1000", 4)         = 4
[pid 18520] close(3)                    = 0
executing program
[pid 18520] write(1, "executing program\n", 18) = 18
[pid 18520] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18520] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18520] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18520] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18520] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18520] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18520] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18521]}, 88) = 18521
[pid 18520] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18520] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18520] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18521 attached
 <unfinished ...>
[pid 18521] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18521] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18521] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18521] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18520] <... futex resumed>)        = 0
[pid 18520] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18520] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18521] <... futex resumed>)        = 1
[pid 18521] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18521] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18520] <... futex resumed>)        = 0
[pid 18520] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18520] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18521] <... futex resumed>)        = 1
[pid 18521] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18521] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18520] <... futex resumed>)        = 0
[pid 18520] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18521] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18520] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18521] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18521] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18520] <... futex resumed>)        = 0
[pid 18520] exit_group(0)               = ?
[pid 18521] <... futex resumed>)        = ?
[pid 18521] +++ exited with 0 +++
[pid 18520] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18520, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18522
./strace-static-x86_64: Process 18522 attached
[pid 18522] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18522] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18522] setpgid(0, 0)               = 0
[pid 18522] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18522] write(3, "1000", 4)         = 4
[pid 18522] close(3)                    = 0
executing program
[pid 18522] write(1, "executing program\n", 18) = 18
[pid 18522] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18522] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18522] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18522] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18522] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18522] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18522] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18523 attached
 => {parent_tid=[18523]}, 88) = 18523
[pid 18522] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18522] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18522] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18523] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18523] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18523] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18523] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18522] <... futex resumed>)        = 0
[pid 18522] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18522] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18523] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18523] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18522] <... futex resumed>)        = 0
[pid 18522] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18522] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18523] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18523] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18522] <... futex resumed>)        = 0
[pid 18522] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18522] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18523] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18523] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18523] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18522] <... futex resumed>)        = 0
[pid 18522] exit_group(0)               = ?
[pid 18523] <... futex resumed>)        = ?
[pid 18523] +++ exited with 0 +++
[pid 18522] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18522, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18524
./strace-static-x86_64: Process 18524 attached
[pid 18524] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18524] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18524] setpgid(0, 0)               = 0
[pid 18524] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18524] write(3, "1000", 4)         = 4
[pid 18524] close(3)                    = 0
[pid 18524] write(1, "executing program\n", 18) = 18
executing program
[pid 18524] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18524] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18524] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18524] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18524] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18524] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18524] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18525]}, 88) = 18525
./strace-static-x86_64: Process 18525 attached
[pid 18524] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18524] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18524] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18525] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18525] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18525] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18525] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18524] <... futex resumed>)        = 0
[pid 18524] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18524] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18525] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18525] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18524] <... futex resumed>)        = 0
[pid 18524] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18524] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18525] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18525] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18524] <... futex resumed>)        = 0
[pid 18524] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18524] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18525] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18525] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18524] <... futex resumed>)        = 0
[pid 18524] exit_group(0)               = ?
[pid 18525] +++ exited with 0 +++
[pid 18524] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18524, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18526 attached
, child_tidptr=0x55557c828690) = 18526
[pid 18526] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18526] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18526] setpgid(0, 0)               = 0
[pid 18526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18526] write(3, "1000", 4)         = 4
[pid 18526] close(3executing program
)                    = 0
[pid 18526] write(1, "executing program\n", 18) = 18
[pid 18526] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18526] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18526] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18526] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18526] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18526] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18526] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18527]}, 88) = 18527
[pid 18526] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18526] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18526] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18527 attached
 <unfinished ...>
[pid 18527] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18527] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18527] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18527] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18526] <... futex resumed>)        = 0
[pid 18526] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18526] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18527] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18527] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18526] <... futex resumed>)        = 0
[pid 18526] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18526] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18527] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18527] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18526] <... futex resumed>)        = 0
[pid 18526] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18526] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18527] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18527] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18526] <... futex resumed>)        = 0
[pid 18526] exit_group(0)               = ?
[pid 18527] +++ exited with 0 +++
[pid 18526] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18526, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18528
./strace-static-x86_64: Process 18528 attached
[pid 18528] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18528] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18528] setpgid(0, 0)               = 0
[pid 18528] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18528] write(3, "1000", 4)         = 4
[pid 18528] close(3executing program
)                    = 0
[pid 18528] write(1, "executing program\n", 18) = 18
[pid 18528] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18528] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18528] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18528] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18528] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18528] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18528] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18529]}, 88) = 18529
./strace-static-x86_64: Process 18529 attached
[pid 18528] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18529] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18528] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18529] <... set_robust_list resumed>) = 0
[pid 18529] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18529] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18528] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18529] <... futex resumed>)        = 0
[pid 18529] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18528] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18529] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18528] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18529] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18528] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18529] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18528] <... futex resumed>)        = 0
[pid 18529] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18528] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18529] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18529] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18528] <... futex resumed>)        = 0
[pid 18528] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18528] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18529] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18529] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18528] <... futex resumed>)        = 0
[pid 18528] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18528] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18529] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18529] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18528] <... futex resumed>)        = 0
[pid 18528] exit_group(0)               = ?
[pid 18529] +++ exited with 0 +++
[pid 18528] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18528, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18530
./strace-static-x86_64: Process 18530 attached
[pid 18530] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18530] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18530] setpgid(0, 0)               = 0
[pid 18530] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18530] write(3, "1000", 4)         = 4
[pid 18530] close(3executing program
)                    = 0
[pid 18530] write(1, "executing program\n", 18) = 18
[pid 18530] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18530] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18530] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18530] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18530] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18530] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18530] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18531]}, 88) = 18531
[pid 18530] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18530] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18530] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18531 attached
 <unfinished ...>
[pid 18531] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18531] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18531] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18531] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18530] <... futex resumed>)        = 0
[pid 18530] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18530] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18531] <... futex resumed>)        = 1
[pid 18531] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18531] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18530] <... futex resumed>)        = 0
[pid 18530] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18530] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18531] <... futex resumed>)        = 1
[pid 18531] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18531] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18530] <... futex resumed>)        = 0
[pid 18530] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18530] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18531] <... futex resumed>)        = 1
[pid 18531] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18531] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18530] <... futex resumed>)        = 0
[pid 18530] exit_group(0)               = ?
[pid 18531] <... futex resumed>)        = ?
[pid 18531] +++ exited with 0 +++
[pid 18530] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18530, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18532
./strace-static-x86_64: Process 18532 attached
[pid 18532] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18532] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18532] setpgid(0, 0)               = 0
[pid 18532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18532] write(3, "1000", 4)         = 4
[pid 18532] close(3)                    = 0
[pid 18532] write(1, "executing program\n", 18executing program
) = 18
[pid 18532] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18532] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18532] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18532] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18532] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18532] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18532] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18533 attached
 => {parent_tid=[18533]}, 88) = 18533
[pid 18532] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18532] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18532] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18533] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18533] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18533] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18533] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18533] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18532] <... futex resumed>)        = 0
[pid 18532] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18532] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18533] <... futex resumed>)        = 0
[pid 18533] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18533] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18532] <... futex resumed>)        = 0
[pid 18532] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18532] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18533] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18533] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18532] <... futex resumed>)        = 0
[pid 18532] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18532] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18533] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18533] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18532] <... futex resumed>)        = 0
[pid 18532] exit_group(0)               = ?
[pid 18533] +++ exited with 0 +++
[pid 18532] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18532, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18534
./strace-static-x86_64: Process 18534 attached
[pid 18534] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18534] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18534] setpgid(0, 0)               = 0
[pid 18534] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18534] write(3, "1000", 4)         = 4
executing program
[pid 18534] close(3)                    = 0
[pid 18534] write(1, "executing program\n", 18) = 18
[pid 18534] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18534] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18534] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18534] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18534] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18534] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18534] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18535]}, 88) = 18535
[pid 18534] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18534] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18534] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18535 attached
 <unfinished ...>
[pid 18535] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18535] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18535] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18535] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18534] <... futex resumed>)        = 0
[pid 18534] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18534] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18535] <... futex resumed>)        = 1
[pid 18535] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18535] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18534] <... futex resumed>)        = 0
[pid 18534] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18534] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18535] <... futex resumed>)        = 1
[pid 18535] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18535] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18534] <... futex resumed>)        = 0
[pid 18534] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18534] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18535] <... futex resumed>)        = 1
[pid 18535] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18535] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18534] <... futex resumed>)        = 0
[pid 18534] exit_group(0)               = ?
[pid 18535] <... futex resumed>)        = ?
[pid 18535] +++ exited with 0 +++
[pid 18534] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18534, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18536
./strace-static-x86_64: Process 18536 attached
[pid 18536] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18536] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18536] setpgid(0, 0)               = 0
[pid 18536] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18536] write(3, "1000", 4executing program
)         = 4
[pid 18536] close(3)                    = 0
[pid 18536] write(1, "executing program\n", 18) = 18
[pid 18536] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18536] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18536] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18536] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18536] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18536] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18536] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18537]}, 88) = 18537
[pid 18536] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18536] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18536] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18537 attached
 <unfinished ...>
[pid 18537] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18537] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18537] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18537] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18536] <... futex resumed>)        = 0
[pid 18536] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18536] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18537] <... futex resumed>)        = 1
[pid 18537] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18537] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18536] <... futex resumed>)        = 0
[pid 18536] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18536] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18537] <... futex resumed>)        = 1
[pid 18537] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18537] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18536] <... futex resumed>)        = 0
[pid 18536] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18536] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18537] <... futex resumed>)        = 1
[pid 18537] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18537] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18536] <... futex resumed>)        = 0
[pid 18536] exit_group(0)               = ?
[pid 18537] <... futex resumed>)        = ?
[pid 18537] +++ exited with 0 +++
[pid 18536] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18536, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18538
./strace-static-x86_64: Process 18538 attached
[pid 18538] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18538] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18538] setpgid(0, 0)               = 0
[pid 18538] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18538] write(3, "1000", 4executing program
)         = 4
[pid 18538] close(3)                    = 0
[pid 18538] write(1, "executing program\n", 18) = 18
[pid 18538] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18538] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18538] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18538] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18538] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18538] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18538] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18539]}, 88) = 18539
./strace-static-x86_64: Process 18539 attached
[pid 18538] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18538] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18538] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18539] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18539] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18539] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18539] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18538] <... futex resumed>)        = 0
[pid 18538] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18538] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18539] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18539] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18538] <... futex resumed>)        = 0
[pid 18538] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18538] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18539] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18539] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18538] <... futex resumed>)        = 0
[pid 18538] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18538] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18539] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18539] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18538] <... futex resumed>)        = 0
[pid 18538] exit_group(0)               = ?
[pid 18539] +++ exited with 0 +++
[pid 18538] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18538, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18540 attached
, child_tidptr=0x55557c828690) = 18540
[pid 18540] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18540] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18540] setpgid(0, 0)               = 0
[pid 18540] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18540] write(3, "1000", 4)         = 4
[pid 18540] close(3)                    = 0
executing program
[pid 18540] write(1, "executing program\n", 18) = 18
[pid 18540] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18540] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18540] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18540] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18540] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18540] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18540] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18541 attached
 => {parent_tid=[18541]}, 88) = 18541
[pid 18540] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18540] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18540] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18541] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18541] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18541] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18541] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18540] <... futex resumed>)        = 0
[pid 18540] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18540] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18541] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18541] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18540] <... futex resumed>)        = 0
[pid 18540] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18540] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18541] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18541] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18540] <... futex resumed>)        = 0
[pid 18540] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18540] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18541] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18541] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18540] <... futex resumed>)        = 0
[pid 18540] exit_group(0)               = ?
[pid 18541] +++ exited with 0 +++
[pid 18540] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18540, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18542
./strace-static-x86_64: Process 18542 attached
[pid 18542] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18542] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18542] setpgid(0, 0)               = 0
[pid 18542] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18542] write(3, "1000", 4)         = 4
[pid 18542] close(3)                    = 0
[pid 18542] write(1, "executing program\n", 18executing program
) = 18
[pid 18542] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18542] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18542] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18542] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18542] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18542] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18542] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18543]}, 88) = 18543
./strace-static-x86_64: Process 18543 attached
[pid 18543] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18543] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18543] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18542] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18542] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18543] <... futex resumed>)        = 0
[pid 18543] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18542] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18543] <... 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 18543] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18542] <... futex resumed>)        = 0
[pid 18542] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18542] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18543] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18543] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18542] <... futex resumed>)        = 0
[pid 18542] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18542] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18543] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18543] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18542] <... futex resumed>)        = 0
[pid 18542] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18542] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18543] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18543] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18542] <... futex resumed>)        = 0
[pid 18542] exit_group(0)               = ?
[pid 18543] +++ exited with 0 +++
[pid 18542] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18542, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18544 attached
, child_tidptr=0x55557c828690) = 18544
[pid 18544] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18544] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18544] setpgid(0, 0)               = 0
[pid 18544] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18544] write(3, "1000", 4)         = 4
[pid 18544] close(3)                    = 0
[pid 18544] write(1, "executing program\n", 18executing program
) = 18
[pid 18544] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18544] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18544] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18544] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18544] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18544] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18544] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18545 attached
 => {parent_tid=[18545]}, 88) = 18545
[pid 18544] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18544] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18544] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18545] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18545] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18545] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18545] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18544] <... futex resumed>)        = 0
[pid 18544] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18544] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18545] <... futex resumed>)        = 1
[pid 18545] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18545] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18544] <... futex resumed>)        = 0
[pid 18544] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18544] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18545] <... futex resumed>)        = 1
[pid 18545] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18545] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18544] <... futex resumed>)        = 0
[pid 18544] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18544] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18545] <... futex resumed>)        = 1
[pid 18545] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18545] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18544] <... futex resumed>)        = 0
[pid 18545] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18544] exit_group(0 <unfinished ...>
[pid 18545] <... futex resumed>)        = ?
[pid 18544] <... exit_group resumed>)   = ?
[pid 18545] +++ exited with 0 +++
[pid 18544] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18544, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18546 attached
, child_tidptr=0x55557c828690) = 18546
[pid 18546] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18546] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18546] setpgid(0, 0)               = 0
[pid 18546] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18546] write(3, "1000", 4)         = 4
[pid 18546] close(3executing program
)                    = 0
[pid 18546] write(1, "executing program\n", 18) = 18
[pid 18546] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18546] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18546] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18546] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18546] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18546] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18546] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18547 attached
 => {parent_tid=[18547]}, 88) = 18547
[pid 18547] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18547] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18547] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18546] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18546] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18547] <... futex resumed>)        = 0
[pid 18547] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18546] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18547] <... 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 18547] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18546] <... futex resumed>)        = 0
[pid 18546] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18546] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18547] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18547] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18546] <... futex resumed>)        = 0
[pid 18546] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18546] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18547] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18547] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18546] <... futex resumed>)        = 0
[pid 18546] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18546] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18547] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18547] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18547] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18546] <... futex resumed>)        = 0
[pid 18546] exit_group(0)               = ?
[pid 18547] <... futex resumed>)        = ?
[pid 18547] +++ exited with 0 +++
[pid 18546] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18546, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18548
./strace-static-x86_64: Process 18548 attached
[pid 18548] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18548] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18548] setpgid(0, 0)               = 0
[pid 18548] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18548] write(3, "1000", 4)         = 4
[pid 18548] close(3)                    = 0
executing program
[pid 18548] write(1, "executing program\n", 18) = 18
[pid 18548] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18548] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18548] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18548] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18548] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18548] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18548] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18549]}, 88) = 18549
[pid 18548] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18548] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18548] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18549 attached
 <unfinished ...>
[pid 18549] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18549] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18549] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18549] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18548] <... futex resumed>)        = 0
[pid 18548] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18548] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18549] <... futex resumed>)        = 1
[pid 18549] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18549] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18548] <... futex resumed>)        = 0
[pid 18548] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18548] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18549] <... futex resumed>)        = 1
[pid 18549] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18549] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18548] <... futex resumed>)        = 0
[pid 18548] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18548] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18549] <... futex resumed>)        = 1
[pid 18549] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18549] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18548] <... futex resumed>)        = 0
[pid 18548] exit_group(0)               = ?
[pid 18549] <... futex resumed>)        = ?
[pid 18549] +++ exited with 0 +++
[pid 18548] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18548, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18550 attached
, child_tidptr=0x55557c828690) = 18550
[pid 18550] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18550] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18550] setpgid(0, 0)               = 0
[pid 18550] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18550] write(3, "1000", 4)         = 4
executing program
[pid 18550] close(3)                    = 0
[pid 18550] write(1, "executing program\n", 18) = 18
[pid 18550] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18550] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18550] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18550] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18550] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18550] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18550] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18551 attached
 => {parent_tid=[18551]}, 88) = 18551
[pid 18550] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18550] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18550] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18551] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18551] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18551] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18551] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18551] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18550] <... futex resumed>)        = 0
[pid 18550] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18550] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18551] <... futex resumed>)        = 0
[pid 18551] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18551] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18550] <... futex resumed>)        = 0
[pid 18550] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18550] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18551] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18551] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18550] <... futex resumed>)        = 0
[pid 18550] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18550] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18551] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18551] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18550] <... futex resumed>)        = 0
[pid 18550] exit_group(0)               = ?
[pid 18551] +++ exited with 0 +++
[pid 18550] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18550, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18552
./strace-static-x86_64: Process 18552 attached
[pid 18552] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18552] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18552] setpgid(0, 0)               = 0
[pid 18552] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18552] write(3, "1000", 4)         = 4
[pid 18552] close(3)                    = 0
[pid 18552] write(1, "executing program\n", 18executing program
) = 18
[pid 18552] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18552] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18552] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18552] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18552] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18552] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18552] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18553]}, 88) = 18553
[pid 18552] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18552] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18552] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18553 attached
 <unfinished ...>
[pid 18553] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18553] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18553] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18553] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18552] <... futex resumed>)        = 0
[pid 18552] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18552] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18553] <... futex resumed>)        = 1
[pid 18553] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18553] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18552] <... futex resumed>)        = 0
[pid 18552] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18552] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18553] <... futex resumed>)        = 1
[pid 18553] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18553] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18552] <... futex resumed>)        = 0
[pid 18552] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18552] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18553] <... futex resumed>)        = 1
[pid 18553] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18553] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18552] <... futex resumed>)        = 0
[pid 18552] exit_group(0)               = ?
[pid 18553] <... futex resumed>)        = ?
[pid 18553] +++ exited with 0 +++
[pid 18552] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18552, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18554 attached
, child_tidptr=0x55557c828690) = 18554
[pid 18554] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18554] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18554] setpgid(0, 0)               = 0
[pid 18554] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18554] write(3, "1000", 4)         = 4
[pid 18554] close(3)                    = 0
[pid 18554] write(1, "executing program\n", 18executing program
) = 18
[pid 18554] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18554] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18554] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18554] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18554] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18554] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18554] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18555]}, 88) = 18555
./strace-static-x86_64: Process 18555 attached
[pid 18554] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18554] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18554] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18555] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18555] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18555] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18555] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18555] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18554] <... futex resumed>)        = 0
[pid 18554] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18554] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18555] <... futex resumed>)        = 0
[pid 18555] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18555] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18554] <... futex resumed>)        = 0
[pid 18554] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18554] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18555] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18555] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18554] <... futex resumed>)        = 0
[pid 18554] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18554] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18555] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18555] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18554] <... futex resumed>)        = 0
[pid 18554] exit_group(0)               = ?
[pid 18555] +++ exited with 0 +++
[pid 18554] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18554, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18556 attached
 <unfinished ...>
[pid 18556] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18556
[pid 18556] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18556] setpgid(0, 0)               = 0
[pid 18556] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18556] write(3, "1000", 4)         = 4
[pid 18556] close(3)                    = 0
[pid 18556] write(1, "executing program\n", 18executing program
) = 18
[pid 18556] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18556] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18556] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18556] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18556] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18556] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18556] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18557]}, 88) = 18557
./strace-static-x86_64: Process 18557 attached
[pid 18556] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18556] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18556] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18557] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18557] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18557] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18557] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18556] <... futex resumed>)        = 0
[pid 18556] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18556] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18557] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18557] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18556] <... futex resumed>)        = 0
[pid 18556] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18556] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18557] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18557] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18556] <... futex resumed>)        = 0
[pid 18556] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18556] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18557] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18557] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18556] <... futex resumed>)        = 0
[pid 18556] exit_group(0)               = ?
[pid 18557] +++ exited with 0 +++
[pid 18556] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18556, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18558
./strace-static-x86_64: Process 18558 attached
[pid 18558] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18558] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18558] setpgid(0, 0)               = 0
[pid 18558] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18558] write(3, "1000", 4)         = 4
[pid 18558] close(3)                    = 0
executing program
[pid 18558] write(1, "executing program\n", 18) = 18
[pid 18558] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18558] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18558] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18558] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18558] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18558] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18558] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18559]}, 88) = 18559
[pid 18558] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18558] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18558] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18559 attached
 <unfinished ...>
[pid 18559] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18559] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18559] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18559] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18558] <... futex resumed>)        = 0
[pid 18558] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18558] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18559] <... futex resumed>)        = 1
[pid 18559] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18559] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18558] <... futex resumed>)        = 0
[pid 18558] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18558] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18559] <... futex resumed>)        = 1
[pid 18559] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18559] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18558] <... futex resumed>)        = 0
[pid 18558] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18558] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18559] <... futex resumed>)        = 1
[pid 18559] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18559] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18558] <... futex resumed>)        = 0
[pid 18558] exit_group(0)               = ?
[pid 18559] <... futex resumed>)        = ?
[pid 18559] +++ exited with 0 +++
[pid 18558] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18558, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18560 attached
, child_tidptr=0x55557c828690) = 18560
[pid 18560] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18560] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18560] setpgid(0, 0)               = 0
[pid 18560] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18560] write(3, "1000", 4)         = 4
[pid 18560] close(3)                    = 0
[pid 18560] write(1, "executing program\n", 18executing program
) = 18
[pid 18560] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18560] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18560] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18560] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18560] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18560] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18560] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18561]}, 88) = 18561
./strace-static-x86_64: Process 18561 attached
[pid 18560] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18561] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18560] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18561] <... set_robust_list resumed>) = 0
[pid 18560] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18561] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18560] <... futex resumed>)        = 0
[pid 18561] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18560] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18561] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18561] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18560] <... futex resumed>)        = 0
[pid 18560] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18560] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18561] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18561] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18560] <... futex resumed>)        = 0
[pid 18560] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18560] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18561] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18561] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18560] <... futex resumed>)        = 0
[pid 18560] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18560] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18561] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18561] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18561] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18560] <... futex resumed>)        = 0
[pid 18560] exit_group(0)               = ?
[pid 18561] <... futex resumed>)        = ?
[pid 18561] +++ exited with 0 +++
[pid 18560] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18560, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18562
./strace-static-x86_64: Process 18562 attached
[pid 18562] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18562] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18562] setpgid(0, 0)               = 0
[pid 18562] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18562] write(3, "1000", 4)         = 4
[pid 18562] close(3)                    = 0
executing program
[pid 18562] write(1, "executing program\n", 18) = 18
[pid 18562] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18562] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18562] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18562] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18562] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18562] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18562] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18563]}, 88) = 18563
./strace-static-x86_64: Process 18563 attached
[pid 18563] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18562] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18563] <... set_robust_list resumed>) = 0
[pid 18562] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18563] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18562] <... futex resumed>)        = 0
[pid 18563] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18562] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18563] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18563] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18562] <... futex resumed>)        = 0
[pid 18562] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18562] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18563] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18563] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18562] <... futex resumed>)        = 0
[pid 18562] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18562] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18563] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18563] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18562] <... futex resumed>)        = 0
[pid 18562] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18562] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18563] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18563] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18562] <... futex resumed>)        = 0
[pid 18562] exit_group(0)               = ?
[pid 18563] +++ exited with 0 +++
[pid 18562] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18562, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18564
./strace-static-x86_64: Process 18564 attached
[pid 18564] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18564] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18564] setpgid(0, 0)               = 0
[pid 18564] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18564] write(3, "1000", 4)         = 4
[pid 18564] close(3)                    = 0
[pid 18564] write(1, "executing program\n", 18executing program
) = 18
[pid 18564] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18564] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18564] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18564] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18564] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18564] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18564] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18565]}, 88) = 18565
./strace-static-x86_64: Process 18565 attached
[pid 18564] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18564] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18564] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18565] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18565] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18565] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18565] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18564] <... futex resumed>)        = 0
[pid 18564] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18564] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18565] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18565] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18564] <... futex resumed>)        = 0
[pid 18564] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18564] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18565] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18565] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18564] <... futex resumed>)        = 0
[pid 18565] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18564] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18564] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18565] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18565] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18564] <... futex resumed>)        = 0
[pid 18565] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18564] exit_group(0 <unfinished ...>
[pid 18565] <... futex resumed>)        = ?
[pid 18564] <... exit_group resumed>)   = ?
[pid 18565] +++ exited with 0 +++
[pid 18564] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18564, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18566 attached
, child_tidptr=0x55557c828690) = 18566
[pid 18566] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18566] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18566] setpgid(0, 0)               = 0
[pid 18566] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18566] write(3, "1000", 4)         = 4
[pid 18566] close(3)                    = 0
[pid 18566] write(1, "executing program\n", 18executing program
) = 18
[pid 18566] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18566] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18566] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18566] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18566] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18566] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18566] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18567]}, 88) = 18567
./strace-static-x86_64: Process 18567 attached
[pid 18566] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18567] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18566] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18566] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18566] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18567] <... set_robust_list resumed>) = 0
[pid 18567] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18567] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18567] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18566] <... futex resumed>)        = 0
[pid 18567] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18566] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18567] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18566] <... futex resumed>)        = 0
[pid 18567] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18566] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18567] <... futex resumed>)        = 0
[pid 18566] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18567] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18566] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18567] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18566] <... futex resumed>)        = 0
[pid 18567] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18566] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18567] <... futex resumed>)        = 0
[pid 18566] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18567] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18566] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18567] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18567] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18566] <... futex resumed>)        = 0
[pid 18567] <... futex resumed>)        = 0
[pid 18566] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18567] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18566] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18566] exit_group(0 <unfinished ...>
[pid 18567] <... futex resumed>)        = ?
[pid 18566] <... exit_group resumed>)   = ?
[pid 18567] +++ exited with 0 +++
[pid 18566] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18566, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18568
./strace-static-x86_64: Process 18568 attached
[pid 18568] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18568] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18568] setpgid(0, 0)               = 0
[pid 18568] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18568] write(3, "1000", 4)         = 4
[pid 18568] close(3executing program
)                    = 0
[pid 18568] write(1, "executing program\n", 18) = 18
[pid 18568] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18568] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18568] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18568] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18568] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18568] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18568] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18569 attached
 => {parent_tid=[18569]}, 88) = 18569
[pid 18568] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18568] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18568] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18569] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18569] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18569] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18569] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18569] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18568] <... futex resumed>)        = 0
[pid 18568] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18569] <... futex resumed>)        = 0
[pid 18568] <... futex resumed>)        = 1
[pid 18569] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18568] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18569] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18569] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18568] <... futex resumed>)        = 0
[pid 18569] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18568] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18568] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18569] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18569] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18569] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18569] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18568] <... futex resumed>)        = 0
[pid 18568] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18569] <... futex resumed>)        = 0
[pid 18568] <... futex resumed>)        = 1
[pid 18569] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18568] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18569] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18569] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18568] <... futex resumed>)        = 0
[pid 18569] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18568] exit_group(0 <unfinished ...>
[pid 18569] <... futex resumed>)        = ?
[pid 18568] <... exit_group resumed>)   = ?
[pid 18569] +++ exited with 0 +++
[pid 18568] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18568, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18570
./strace-static-x86_64: Process 18570 attached
[pid 18570] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18570] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18570] setpgid(0, 0)               = 0
[pid 18570] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18570] write(3, "1000", 4)         = 4
[pid 18570] close(3)                    = 0
[pid 18570] write(1, "executing program\n", 18executing program
) = 18
[pid 18570] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18570] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18570] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18570] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18570] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18570] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18570] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18571 attached
 => {parent_tid=[18571]}, 88) = 18571
[pid 18571] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18570] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18570] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18570] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18571] <... set_robust_list resumed>) = 0
[pid 18571] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18571] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18571] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18570] <... futex resumed>)        = 0
[pid 18571] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18570] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18571] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18570] <... futex resumed>)        = 0
[pid 18571] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18570] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18571] <... futex resumed>)        = 0
[pid 18570] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18571] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18570] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18571] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18570] <... futex resumed>)        = 0
[pid 18571] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18570] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18571] <... futex resumed>)        = 0
[pid 18570] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18571] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18570] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18571] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18570] <... futex resumed>)        = 0
[pid 18571] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18570] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18571] <... futex resumed>)        = 0
[pid 18570] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18571] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18570] exit_group(0 <unfinished ...>
[pid 18571] <... futex resumed>)        = ?
[pid 18570] <... exit_group resumed>)   = ?
[pid 18571] +++ exited with 0 +++
[pid 18570] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18570, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18572
./strace-static-x86_64: Process 18572 attached
[pid 18572] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18572] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18572] setpgid(0, 0)               = 0
[pid 18572] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18572] write(3, "1000", 4)         = 4
[pid 18572] close(3)                    = 0
executing program
[pid 18572] write(1, "executing program\n", 18) = 18
[pid 18572] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18572] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18572] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18572] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18572] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18572] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18572] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18573]}, 88) = 18573
./strace-static-x86_64: Process 18573 attached
[pid 18572] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18572] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18572] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18573] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18573] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18573] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18573] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18573] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18572] <... futex resumed>)        = 0
[pid 18572] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18573] <... futex resumed>)        = 0
[pid 18572] <... futex resumed>)        = 1
[pid 18573] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18572] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18573] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18573] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18572] <... futex resumed>)        = 0
[pid 18573] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18572] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18573] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18572] <... futex resumed>)        = 0
[pid 18573] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18572] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18573] <... futex resumed>)        = 0
[pid 18572] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18573] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18572] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18573] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18572] <... futex resumed>)        = 0
[pid 18573] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18572] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18573] <... futex resumed>)        = 0
[pid 18572] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18573] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18572] exit_group(0 <unfinished ...>
[pid 18573] <... futex resumed>)        = ?
[pid 18572] <... exit_group resumed>)   = ?
[pid 18573] +++ exited with 0 +++
[pid 18572] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18572, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18574 attached
, child_tidptr=0x55557c828690) = 18574
[pid 18574] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18574] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18574] setpgid(0, 0)               = 0
[pid 18574] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18574] write(3, "1000", 4)         = 4
[pid 18574] close(3)                    = 0
[pid 18574] write(1, "executing program\n", 18executing program
) = 18
[pid 18574] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18574] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18574] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18574] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18574] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18574] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18574] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18575 attached
 => {parent_tid=[18575]}, 88) = 18575
[pid 18575] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18575] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18575] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18574] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18574] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18575] <... futex resumed>)        = 0
[pid 18574] <... futex resumed>)        = 1
[pid 18575] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18574] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18575] <... 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 18575] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18574] <... futex resumed>)        = 0
[pid 18575] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18574] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18575] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18574] <... futex resumed>)        = 0
[pid 18575] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18574] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18575] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18575] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18574] <... futex resumed>)        = 0
[pid 18575] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18574] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18575] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18574] <... futex resumed>)        = 0
[pid 18575] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18574] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18575] <... futex resumed>)        = 0
[pid 18574] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18575] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18574] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18575] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18574] <... futex resumed>)        = 0
[pid 18575] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18574] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18575] <... futex resumed>)        = 0
[pid 18574] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18575] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18574] exit_group(0 <unfinished ...>
[pid 18575] <... futex resumed>)        = ?
[pid 18574] <... exit_group resumed>)   = ?
[pid 18575] +++ exited with 0 +++
[pid 18574] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18574, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18576
./strace-static-x86_64: Process 18576 attached
[pid 18576] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18576] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18576] setpgid(0, 0)               = 0
[pid 18576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18576] write(3, "1000", 4)         = 4
[pid 18576] close(3)                    = 0
[pid 18576] write(1, "executing program\n", 18executing program
) = 18
[pid 18576] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18576] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18576] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18576] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18576] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18576] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18576] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18577 attached
 <unfinished ...>
[pid 18577] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18576] <... clone3 resumed> => {parent_tid=[18577]}, 88) = 18577
[pid 18577] <... set_robust_list resumed>) = 0
[pid 18576] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18577] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18576] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18577] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18576] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18577] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18576] <... futex resumed>)        = 0
[pid 18577] <... 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 18576] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18577] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18576] <... futex resumed>)        = 0
[pid 18577] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18576] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18577] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18576] <... futex resumed>)        = 0
[pid 18577] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18576] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18577] <... futex resumed>)        = 0
[pid 18576] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18577] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18576] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18577] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18576] <... futex resumed>)        = 0
[pid 18577] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18576] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18577] <... futex resumed>)        = 0
[pid 18576] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18577] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18576] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18576] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18577] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18577] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18576] <... futex resumed>)        = 0
[pid 18576] exit_group(0)               = ?
[pid 18577] +++ exited with 0 +++
[pid 18576] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18576, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18578 attached
 <unfinished ...>
[pid 18578] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18578] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18578] setpgid(0, 0)               = 0
[pid 18578] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18578] write(3, "1000", 4 <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18578
[pid 18578] <... write resumed>)        = 4
[pid 18578] close(3)                    = 0
executing program
[pid 18578] write(1, "executing program\n", 18) = 18
[pid 18578] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18578] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18578] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18578] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18578] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18578] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18578] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18579 attached
 => {parent_tid=[18579]}, 88) = 18579
[pid 18579] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18578] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18579] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18578] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18579] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18578] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18579] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18578] <... futex resumed>)        = 0
[pid 18579] <... 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 18578] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18579] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18578] <... futex resumed>)        = 0
[pid 18579] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18578] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18579] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18578] <... futex resumed>)        = 0
[pid 18579] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18578] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18579] <... futex resumed>)        = 0
[pid 18578] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18579] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18578] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18579] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18578] <... futex resumed>)        = 0
[pid 18579] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18578] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18579] <... futex resumed>)        = 0
[pid 18578] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18579] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18578] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18579] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18578] <... futex resumed>)        = 0
[pid 18579] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18578] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18579] <... futex resumed>)        = 0
[pid 18578] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18579] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18578] exit_group(0 <unfinished ...>
[pid 18579] <... futex resumed>)        = ?
[pid 18578] <... exit_group resumed>)   = ?
[pid 18579] +++ exited with 0 +++
[pid 18578] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18578, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18580
./strace-static-x86_64: Process 18580 attached
[pid 18580] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18580] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18580] setpgid(0, 0)               = 0
[pid 18580] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18580] write(3, "1000", 4)         = 4
[pid 18580] close(3)                    = 0
executing program
[pid 18580] write(1, "executing program\n", 18) = 18
[pid 18580] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18580] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18580] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18580] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18580] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18580] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18580] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18581]}, 88) = 18581
./strace-static-x86_64: Process 18581 attached
[pid 18580] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18580] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18580] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18581] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18581] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18581] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18581] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18580] <... futex resumed>)        = 0
[pid 18580] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18580] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18581] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18581] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18580] <... futex resumed>)        = 0
[pid 18580] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18580] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18581] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18581] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18580] <... futex resumed>)        = 0
[pid 18580] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18580] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18581] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18581] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18580] <... futex resumed>)        = 0
[pid 18580] exit_group(0)               = ?
[pid 18581] +++ exited with 0 +++
[pid 18580] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18580, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18582
./strace-static-x86_64: Process 18582 attached
[pid 18582] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18582] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18582] setpgid(0, 0)               = 0
[pid 18582] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18582] write(3, "1000", 4)         = 4
[pid 18582] close(3)                    = 0
[pid 18582] write(1, "executing program\n", 18executing program
) = 18
[pid 18582] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18582] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18582] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18582] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18582] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18582] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18582] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18583 attached
 => {parent_tid=[18583]}, 88) = 18583
[pid 18582] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18582] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18582] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18583] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18583] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18583] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18583] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18582] <... futex resumed>)        = 0
[pid 18582] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18582] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18583] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18583] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18582] <... futex resumed>)        = 0
[pid 18582] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18582] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18583] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18583] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18582] <... futex resumed>)        = 0
[pid 18582] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18582] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18583] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18583] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18582] <... futex resumed>)        = 0
[pid 18582] exit_group(0)               = ?
[pid 18583] +++ exited with 0 +++
[pid 18582] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18582, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18584
./strace-static-x86_64: Process 18584 attached
[pid 18584] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18584] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18584] setpgid(0, 0)               = 0
[pid 18584] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18584] write(3, "1000", 4)         = 4
[pid 18584] close(3)                    = 0
[pid 18584] write(1, "executing program\n", 18executing program
) = 18
[pid 18584] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18584] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18584] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18584] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18584] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18584] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18584] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18585 attached
 => {parent_tid=[18585]}, 88) = 18585
[pid 18584] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18584] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18584] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18585] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18585] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18585] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18585] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18584] <... futex resumed>)        = 0
[pid 18584] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18584] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18585] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18585] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18584] <... futex resumed>)        = 0
[pid 18584] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18584] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18585] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18585] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18584] <... futex resumed>)        = 0
[pid 18584] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18584] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18585] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18585] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18585] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18584] <... futex resumed>)        = 0
[pid 18584] exit_group(0)               = ?
[pid 18585] <... futex resumed>)        = ?
[pid 18585] +++ exited with 0 +++
[pid 18584] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18584, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18586
./strace-static-x86_64: Process 18586 attached
[pid 18586] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18586] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18586] setpgid(0, 0)               = 0
[pid 18586] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18586] write(3, "1000", 4)         = 4
[pid 18586] close(3)                    = 0
executing program
[pid 18586] write(1, "executing program\n", 18) = 18
[pid 18586] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18586] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18586] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18586] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18586] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18586] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18586] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18587 attached
 => {parent_tid=[18587]}, 88) = 18587
[pid 18587] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18586] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18587] <... set_robust_list resumed>) = 0
[pid 18586] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18587] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18586] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18587] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18586] <... futex resumed>)        = 0
[pid 18587] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18586] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18587] <... 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 18587] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18586] <... futex resumed>)        = 0
[pid 18586] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18586] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18587] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18587] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18586] <... futex resumed>)        = 0
[pid 18586] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18586] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18587] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18587] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18586] <... futex resumed>)        = 0
[pid 18587] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18586] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18586] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18587] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18587] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18586] <... futex resumed>)        = 0
[pid 18587] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18586] exit_group(0 <unfinished ...>
[pid 18587] <... futex resumed>)        = ?
[pid 18586] <... exit_group resumed>)   = ?
[pid 18587] +++ exited with 0 +++
[pid 18586] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18586, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18588
./strace-static-x86_64: Process 18588 attached
[pid 18588] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18588] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18588] setpgid(0, 0)               = 0
[pid 18588] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18588] write(3, "1000", 4)         = 4
[pid 18588] close(3)                    = 0
executing program
[pid 18588] write(1, "executing program\n", 18) = 18
[pid 18588] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18588] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18588] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18588] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18588] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18588] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18588] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18589 attached
 => {parent_tid=[18589]}, 88) = 18589
[pid 18588] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18588] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18588] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18589] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18589] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18589] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18589] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18588] <... futex resumed>)        = 0
[pid 18589] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18588] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18589] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18588] <... futex resumed>)        = 0
[pid 18589] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18588] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18589] <... futex resumed>)        = 0
[pid 18588] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18589] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18588] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18589] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18588] <... futex resumed>)        = 0
[pid 18589] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18588] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18589] <... futex resumed>)        = 0
[pid 18588] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18589] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18588] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18589] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18588] <... futex resumed>)        = 0
[pid 18589] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18588] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18589] <... futex resumed>)        = 0
[pid 18588] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18589] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18588] exit_group(0 <unfinished ...>
[pid 18589] <... futex resumed>)        = ?
[pid 18588] <... exit_group resumed>)   = ?
[pid 18589] +++ exited with 0 +++
[pid 18588] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18588, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18590
./strace-static-x86_64: Process 18590 attached
[pid 18590] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18590] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18590] setpgid(0, 0)               = 0
[pid 18590] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18590] write(3, "1000", 4)         = 4
[pid 18590] close(3)                    = 0
executing program
[pid 18590] write(1, "executing program\n", 18) = 18
[pid 18590] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18590] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18590] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18590] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18590] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18590] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18590] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18591]}, 88) = 18591
./strace-static-x86_64: Process 18591 attached
[pid 18591] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18591] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18591] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18590] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18590] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18591] <... futex resumed>)        = 0
[pid 18590] <... futex resumed>)        = 1
[pid 18591] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18590] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18591] <... 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 18591] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18591] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18590] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18590] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18591] <... futex resumed>)        = 0
[pid 18590] <... futex resumed>)        = 1
[pid 18591] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18590] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18591] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18591] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18590] <... futex resumed>)        = 0
[pid 18591] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18590] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18591] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18590] <... futex resumed>)        = 0
[pid 18591] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18590] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18591] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18591] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18590] <... futex resumed>)        = 0
[pid 18591] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18590] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18591] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18590] <... futex resumed>)        = 0
[pid 18591] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18590] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18591] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18591] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18590] <... futex resumed>)        = 0
[pid 18591] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18590] exit_group(0 <unfinished ...>
[pid 18591] <... futex resumed>)        = ?
[pid 18590] <... exit_group resumed>)   = ?
[pid 18591] +++ exited with 0 +++
[pid 18590] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18590, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18592
./strace-static-x86_64: Process 18592 attached
[pid 18592] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18592] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18592] setpgid(0, 0)               = 0
[pid 18592] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18592] write(3, "1000", 4)         = 4
[pid 18592] close(3)                    = 0
[pid 18592] write(1, "executing program\n", 18executing program
) = 18
[pid 18592] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18592] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18592] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18592] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18592] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18592] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18592] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18593]}, 88) = 18593
./strace-static-x86_64: Process 18593 attached
[pid 18593] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18592] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18593] <... set_robust_list resumed>) = 0
[pid 18592] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18593] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18592] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18593] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18592] <... futex resumed>)        = 0
[pid 18592] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18593] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18593] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18592] <... futex resumed>)        = 0
[pid 18593] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18592] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18593] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18592] <... futex resumed>)        = 0
[pid 18593] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18592] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18593] <... futex resumed>)        = 0
[pid 18592] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18593] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18592] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18593] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18592] <... futex resumed>)        = 0
[pid 18593] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18592] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18593] <... futex resumed>)        = 0
[pid 18592] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18593] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18592] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18593] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18592] <... futex resumed>)        = 0
[pid 18593] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18592] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18593] <... futex resumed>)        = 0
[pid 18592] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18593] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18592] exit_group(0 <unfinished ...>
[pid 18593] <... futex resumed>)        = ?
[pid 18592] <... exit_group resumed>)   = ?
[pid 18593] +++ exited with 0 +++
[pid 18592] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18592, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18594
./strace-static-x86_64: Process 18594 attached
[pid 18594] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18594] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18594] setpgid(0, 0)               = 0
[pid 18594] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18594] write(3, "1000", 4)         = 4
[pid 18594] close(3)                    = 0
executing program
[pid 18594] write(1, "executing program\n", 18) = 18
[pid 18594] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18594] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18594] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18594] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18594] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18594] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18594] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18595 attached
 => {parent_tid=[18595]}, 88) = 18595
[pid 18595] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18594] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18595] <... set_robust_list resumed>) = 0
[pid 18594] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18595] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18594] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18595] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18594] <... futex resumed>)        = 0
[pid 18595] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18594] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18595] <... 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 18595] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18595] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18594] <... futex resumed>)        = 0
[pid 18594] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18595] <... futex resumed>)        = 0
[pid 18594] <... futex resumed>)        = 1
[pid 18595] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18594] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18595] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18595] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18595] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18594] <... futex resumed>)        = 0
[pid 18594] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18595] <... futex resumed>)        = 0
[pid 18594] <... futex resumed>)        = 1
[pid 18595] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18594] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18595] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18595] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18594] <... futex resumed>)        = 0
[pid 18595] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18594] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18595] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18594] <... futex resumed>)        = 0
[pid 18595] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18594] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18595] <... futex resumed>)        = 0
[pid 18594] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18595] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18594] exit_group(0 <unfinished ...>
[pid 18595] <... futex resumed>)        = ?
[pid 18594] <... exit_group resumed>)   = ?
[pid 18595] +++ exited with 0 +++
[pid 18594] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18594, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18596 attached
, child_tidptr=0x55557c828690) = 18596
[pid 18596] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18596] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18596] setpgid(0, 0)               = 0
[pid 18596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18596] write(3, "1000", 4)         = 4
[pid 18596] close(3)                    = 0
executing program
[pid 18596] write(1, "executing program\n", 18) = 18
[pid 18596] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18596] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18596] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18596] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18596] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18596] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18596] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18597]}, 88) = 18597
[pid 18596] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18596] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18596] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18597 attached
 <unfinished ...>
[pid 18597] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18597] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18597] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18596] <... futex resumed>)        = 0
[pid 18597] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18596] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18597] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18596] <... futex resumed>)        = 0
[pid 18597] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18596] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18597] <... futex resumed>)        = 0
[pid 18596] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18597] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18596] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18597] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18596] <... futex resumed>)        = 0
[pid 18597] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18596] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18597] <... futex resumed>)        = 0
[pid 18596] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18597] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18596] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18596] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18597] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18597] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18596] <... futex resumed>)        = 0
[pid 18597] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18596] exit_group(0 <unfinished ...>
[pid 18597] <... futex resumed>)        = ?
[pid 18596] <... exit_group resumed>)   = ?
[pid 18597] +++ exited with 0 +++
[pid 18596] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18596, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18598 attached
 <unfinished ...>
[pid 18598] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18598] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18598
[pid 18598] setpgid(0, 0)               = 0
[pid 18598] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18598] write(3, "1000", 4)         = 4
executing program
[pid 18598] close(3)                    = 0
[pid 18598] write(1, "executing program\n", 18) = 18
[pid 18598] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18598] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18598] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18598] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18598] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18598] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18598] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18599 attached
 => {parent_tid=[18599]}, 88) = 18599
[pid 18598] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18598] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18598] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18599] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18599] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18599] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18599] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18598] <... futex resumed>)        = 0
[pid 18599] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18598] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18599] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18598] <... futex resumed>)        = 0
[pid 18599] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18598] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18599] <... futex resumed>)        = 0
[pid 18598] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18599] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18598] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18599] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18598] <... futex resumed>)        = 0
[pid 18599] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18598] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18599] <... futex resumed>)        = 0
[pid 18598] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18599] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18598] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18599] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18598] <... futex resumed>)        = 0
[pid 18599] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18598] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18599] <... futex resumed>)        = 0
[pid 18598] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18599] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18598] exit_group(0 <unfinished ...>
[pid 18599] <... futex resumed>)        = ?
[pid 18598] <... exit_group resumed>)   = ?
[pid 18599] +++ exited with 0 +++
[pid 18598] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18598, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18600
./strace-static-x86_64: Process 18600 attached
[pid 18600] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18600] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18600] setpgid(0, 0)               = 0
[pid 18600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18600] write(3, "1000", 4)         = 4
[pid 18600] close(3)                    = 0
[pid 18600] write(1, "executing program\n", 18executing program
) = 18
[pid 18600] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18600] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18600] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18600] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18600] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18600] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18600] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18601 attached
 => {parent_tid=[18601]}, 88) = 18601
[pid 18601] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18601] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18601] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18600] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18600] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18601] <... futex resumed>)        = 0
[pid 18600] <... futex resumed>)        = 1
[pid 18601] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18600] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18601] <... 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 18601] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18601] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18600] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18600] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18601] <... futex resumed>)        = 0
[pid 18600] <... futex resumed>)        = 1
[pid 18601] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18600] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18601] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18601] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18600] <... futex resumed>)        = 0
[pid 18601] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18600] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18601] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18600] <... futex resumed>)        = 0
[pid 18601] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18600] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18601] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18601] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18600] <... futex resumed>)        = 0
[pid 18601] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18600] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18601] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18600] <... futex resumed>)        = 0
[pid 18601] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18600] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18601] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18601] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18600] <... futex resumed>)        = 0
[pid 18601] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18600] exit_group(0 <unfinished ...>
[pid 18601] <... futex resumed>)        = ?
[pid 18600] <... exit_group resumed>)   = ?
[pid 18601] +++ exited with 0 +++
[pid 18600] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18600, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18602 attached
, child_tidptr=0x55557c828690) = 18602
[pid 18602] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18602] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18602] setpgid(0, 0)               = 0
[pid 18602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18602] write(3, "1000", 4)         = 4
[pid 18602] close(3executing program
)                    = 0
[pid 18602] write(1, "executing program\n", 18) = 18
[pid 18602] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18602] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18602] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18602] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18602] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18602] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18602] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18603 attached
 => {parent_tid=[18603]}, 88) = 18603
[pid 18602] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18602] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18602] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18603] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18603] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18603] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18603] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18603] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18602] <... futex resumed>)        = 0
[pid 18602] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18603] <... futex resumed>)        = 0
[pid 18602] <... futex resumed>)        = 1
[pid 18602] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18603] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18603] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18602] <... futex resumed>)        = 0
[pid 18603] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18602] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18603] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18602] <... futex resumed>)        = 0
[pid 18603] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18602] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18603] <... futex resumed>)        = 0
[pid 18602] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18603] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18602] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18603] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18602] <... futex resumed>)        = 0
[pid 18603] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18602] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18603] <... futex resumed>)        = 0
[pid 18602] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18603] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18602] exit_group(0 <unfinished ...>
[pid 18603] <... futex resumed>)        = ?
[pid 18602] <... exit_group resumed>)   = ?
[pid 18603] +++ exited with 0 +++
[pid 18602] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18602, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18604 attached
, child_tidptr=0x55557c828690) = 18604
[pid 18604] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18604] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18604] setpgid(0, 0)               = 0
[pid 18604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18604] write(3, "1000", 4)         = 4
[pid 18604] close(3)                    = 0
[pid 18604] write(1, "executing program\n", 18executing program
) = 18
[pid 18604] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18604] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18604] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18604] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18604] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18604] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18604] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18605 attached
 => {parent_tid=[18605]}, 88) = 18605
[pid 18604] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18605] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18604] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18605] <... set_robust_list resumed>) = 0
[pid 18604] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18605] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18604] <... futex resumed>)        = 0
[pid 18605] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18604] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18605] <... 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 18605] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18604] <... futex resumed>)        = 0
[pid 18604] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18604] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18605] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18605] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18604] <... futex resumed>)        = 0
[pid 18604] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18604] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18605] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18605] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18604] <... futex resumed>)        = 0
[pid 18604] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18604] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18605] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18605] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18605] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18604] <... futex resumed>)        = 0
[pid 18604] exit_group(0)               = ?
[pid 18605] <... futex resumed>)        = ?
[pid 18605] +++ exited with 0 +++
[pid 18604] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18604, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18606 attached
 <unfinished ...>
[pid 18606] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18606] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18606] setpgid(0, 0)               = 0
[pid 18606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18606
[pid 18606] <... openat resumed>)       = 3
[pid 18606] write(3, "1000", 4)         = 4
[pid 18606] close(3)                    = 0
executing program
[pid 18606] write(1, "executing program\n", 18) = 18
[pid 18606] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18606] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18606] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18606] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18606] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18606] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18606] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18607 attached
 => {parent_tid=[18607]}, 88) = 18607
[pid 18607] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18606] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18607] <... set_robust_list resumed>) = 0
[pid 18606] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18607] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18606] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18607] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18606] <... futex resumed>)        = 0
[pid 18607] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18606] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18607] <... 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 18607] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18606] <... futex resumed>)        = 0
[pid 18606] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18606] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18607] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18607] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18606] <... futex resumed>)        = 0
[pid 18606] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18606] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18607] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18607] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18606] <... futex resumed>)        = 0
[pid 18606] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18606] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18607] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18607] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18606] <... futex resumed>)        = 0
[pid 18606] exit_group(0)               = ?
[pid 18607] +++ exited with 0 +++
[pid 18606] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18606, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18608
./strace-static-x86_64: Process 18608 attached
[pid 18608] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18608] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18608] setpgid(0, 0)               = 0
[pid 18608] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18608] write(3, "1000", 4)         = 4
[pid 18608] close(3)                    = 0
executing program
[pid 18608] write(1, "executing program\n", 18) = 18
[pid 18608] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18608] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18608] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18608] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18608] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18608] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18608] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18609]}, 88) = 18609
./strace-static-x86_64: Process 18609 attached
[pid 18608] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18608] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18608] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18609] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18609] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18609] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18609] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18608] <... futex resumed>)        = 0
[pid 18608] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18608] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18609] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18609] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18608] <... futex resumed>)        = 0
[pid 18608] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18608] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18609] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18609] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18608] <... futex resumed>)        = 0
[pid 18608] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18608] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18609] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18609] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18608] <... futex resumed>)        = 0
[pid 18608] exit_group(0)               = ?
[pid 18609] +++ exited with 0 +++
[pid 18608] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18608, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18610
./strace-static-x86_64: Process 18610 attached
[pid 18610] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18610] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18610] setpgid(0, 0)               = 0
[pid 18610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18610] write(3, "1000", 4)         = 4
[pid 18610] close(3executing program
)                    = 0
[pid 18610] write(1, "executing program\n", 18) = 18
[pid 18610] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18610] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18610] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18610] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18610] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18610] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18610] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18611]}, 88) = 18611
./strace-static-x86_64: Process 18611 attached
[pid 18610] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18610] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18610] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18611] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18611] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18611] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18611] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18610] <... futex resumed>)        = 0
[pid 18611] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18610] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18611] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18610] <... futex resumed>)        = 0
[pid 18611] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18610] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18611] <... futex resumed>)        = 0
[pid 18610] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18611] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18610] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18611] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18610] <... futex resumed>)        = 0
[pid 18611] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18610] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18611] <... futex resumed>)        = 0
[pid 18610] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18611] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18610] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18611] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18610] <... futex resumed>)        = 0
[pid 18611] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18610] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18611] <... futex resumed>)        = 0
[pid 18610] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18611] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18610] exit_group(0 <unfinished ...>
[pid 18611] <... futex resumed>)        = ?
[pid 18610] <... exit_group resumed>)   = ?
[pid 18611] +++ exited with 0 +++
[pid 18610] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18610, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18612 attached
, child_tidptr=0x55557c828690) = 18612
[pid 18612] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18612] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18612] setpgid(0, 0)               = 0
[pid 18612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18612] write(3, "1000", 4)         = 4
[pid 18612] close(3)                    = 0
executing program
[pid 18612] write(1, "executing program\n", 18) = 18
[pid 18612] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18612] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18612] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18612] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18612] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18612] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18612] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18613 attached
 => {parent_tid=[18613]}, 88) = 18613
[pid 18612] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18612] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18612] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18613] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18613] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18613] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18613] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18612] <... futex resumed>)        = 0
[pid 18613] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18612] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18613] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18612] <... futex resumed>)        = 0
[pid 18613] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18612] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18613] <... futex resumed>)        = 0
[pid 18612] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18613] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18612] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18613] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18612] <... futex resumed>)        = 0
[pid 18613] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18612] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18613] <... futex resumed>)        = 0
[pid 18612] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18613] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18612] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18613] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18612] <... futex resumed>)        = 0
[pid 18613] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18612] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18613] <... futex resumed>)        = 0
[pid 18612] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18613] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18612] exit_group(0 <unfinished ...>
[pid 18613] <... futex resumed>)        = ?
[pid 18612] <... exit_group resumed>)   = ?
[pid 18613] +++ exited with 0 +++
[pid 18612] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18612, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18614
./strace-static-x86_64: Process 18614 attached
[pid 18614] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18614] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18614] setpgid(0, 0)               = 0
[pid 18614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18614] write(3, "1000", 4)         = 4
executing program
[pid 18614] close(3)                    = 0
[pid 18614] write(1, "executing program\n", 18) = 18
[pid 18614] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18614] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18614] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18614] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18614] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18614] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18614] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18615 attached
 => {parent_tid=[18615]}, 88) = 18615
[pid 18614] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18614] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18614] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18615] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18615] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18615] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18615] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18614] <... futex resumed>)        = 0
[pid 18615] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18614] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18615] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18614] <... futex resumed>)        = 0
[pid 18615] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18614] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18615] <... futex resumed>)        = 0
[pid 18614] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18615] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18614] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18615] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18614] <... futex resumed>)        = 0
[pid 18615] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18614] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18615] <... futex resumed>)        = 0
[pid 18614] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18615] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18614] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18615] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18614] <... futex resumed>)        = 0
[pid 18615] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18614] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18615] <... futex resumed>)        = 0
[pid 18614] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18615] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18614] exit_group(0 <unfinished ...>
[pid 18615] <... futex resumed>)        = ?
[pid 18614] <... exit_group resumed>)   = ?
[pid 18615] +++ exited with 0 +++
[pid 18614] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18614, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18616
./strace-static-x86_64: Process 18616 attached
[pid 18616] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18616] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18616] setpgid(0, 0)               = 0
[pid 18616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18616] write(3, "1000", 4)         = 4
[pid 18616] close(3executing program
)                    = 0
[pid 18616] write(1, "executing program\n", 18) = 18
[pid 18616] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18616] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18616] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18616] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18616] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18616] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18616] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18617]}, 88) = 18617
[pid 18616] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18616] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18616] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18617 attached
 <unfinished ...>
[pid 18617] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18617] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18617] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18617] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18616] <... futex resumed>)        = 0
[pid 18616] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18616] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18617] <... futex resumed>)        = 1
[pid 18617] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18617] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18616] <... futex resumed>)        = 0
[pid 18616] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18616] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18617] <... futex resumed>)        = 1
[pid 18617] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18617] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18616] <... futex resumed>)        = 0
[pid 18616] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18616] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18617] <... futex resumed>)        = 1
[pid 18617] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18617] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18616] <... futex resumed>)        = 0
[pid 18616] exit_group(0)               = ?
[pid 18617] <... futex resumed>)        = ?
[pid 18617] +++ exited with 0 +++
[pid 18616] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18616, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18618
./strace-static-x86_64: Process 18618 attached
[pid 18618] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18618] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18618] setpgid(0, 0)               = 0
[pid 18618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18618] write(3, "1000", 4)         = 4
[pid 18618] close(3)                    = 0
executing program
[pid 18618] write(1, "executing program\n", 18) = 18
[pid 18618] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18618] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18618] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18618] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18618] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18618] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18618] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18619 attached
 => {parent_tid=[18619]}, 88) = 18619
[pid 18618] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18618] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18618] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18619] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18619] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18619] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18619] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18618] <... futex resumed>)        = 0
[pid 18618] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18618] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18619] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18619] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18618] <... futex resumed>)        = 0
[pid 18618] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18618] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18619] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18619] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18618] <... futex resumed>)        = 0
[pid 18618] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18618] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18619] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18619] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18618] <... futex resumed>)        = 0
[pid 18618] exit_group(0)               = ?
[pid 18619] +++ exited with 0 +++
[pid 18618] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18618, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18620
./strace-static-x86_64: Process 18620 attached
[pid 18620] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18620] setpgid(0, 0)               = 0
[pid 18620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18620] write(3, "1000", 4)         = 4
[pid 18620] close(3)                    = 0
[pid 18620] write(1, "executing program\n", 18executing program
) = 18
[pid 18620] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18620] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18620] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18620] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18620] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18620] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18620] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18621 attached
 => {parent_tid=[18621]}, 88) = 18621
[pid 18620] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18620] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18620] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18621] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18621] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18621] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18621] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18620] <... futex resumed>)        = 0
[pid 18620] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18620] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18621] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18621] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18620] <... futex resumed>)        = 0
[pid 18620] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18620] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18621] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18621] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18620] <... futex resumed>)        = 0
[pid 18620] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18620] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18621] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18621] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18620] <... futex resumed>)        = 0
[pid 18620] exit_group(0)               = ?
[pid 18621] +++ exited with 0 +++
[pid 18620] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18620, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18622 attached
, child_tidptr=0x55557c828690) = 18622
[pid 18622] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18622] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18622] setpgid(0, 0)               = 0
[pid 18622] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18622] write(3, "1000", 4)         = 4
[pid 18622] close(3executing program
)                    = 0
[pid 18622] write(1, "executing program\n", 18) = 18
[pid 18622] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18622] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18622] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18622] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18622] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18622] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18622] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18623 attached
 <unfinished ...>
[pid 18623] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18622] <... clone3 resumed> => {parent_tid=[18623]}, 88) = 18623
[pid 18622] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18622] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18622] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18623] <... set_robust_list resumed>) = 0
[pid 18623] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18623] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18623] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18622] <... futex resumed>)        = 0
[pid 18622] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18622] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18623] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18623] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18622] <... futex resumed>)        = 0
[pid 18622] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18622] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18623] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18623] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18622] <... futex resumed>)        = 0
[pid 18622] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18622] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18623] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18623] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18622] <... futex resumed>)        = 0
[pid 18623] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18622] exit_group(0)               = ?
[pid 18623] <... futex resumed>)        = ?
[pid 18623] +++ exited with 0 +++
[pid 18622] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18622, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18624 attached
, child_tidptr=0x55557c828690) = 18624
[pid 18624] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18624] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18624] setpgid(0, 0)               = 0
[pid 18624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18624] write(3, "1000", 4)         = 4
[pid 18624] close(3)                    = 0
executing program
[pid 18624] write(1, "executing program\n", 18) = 18
[pid 18624] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18624] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18624] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18624] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18624] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18624] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18624] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18625]}, 88) = 18625
[pid 18624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18624] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18624] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18625 attached
 <unfinished ...>
[pid 18625] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18625] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18625] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18625] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18624] <... futex resumed>)        = 0
[pid 18625] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18624] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18625] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18624] <... futex resumed>)        = 0
[pid 18625] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18624] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18625] <... futex resumed>)        = 0
[pid 18624] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18625] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18624] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18625] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18624] <... futex resumed>)        = 0
[pid 18625] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18624] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18625] <... futex resumed>)        = 0
[pid 18624] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18625] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18624] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18624] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18625] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18625] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18624] <... futex resumed>)        = 0
[pid 18625] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18624] exit_group(0 <unfinished ...>
[pid 18625] <... futex resumed>)        = ?
[pid 18624] <... exit_group resumed>)   = ?
[pid 18625] +++ exited with 0 +++
[pid 18624] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18624, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18626
./strace-static-x86_64: Process 18626 attached
[pid 18626] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18626] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18626] setpgid(0, 0)               = 0
[pid 18626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18626] write(3, "1000", 4)         = 4
[pid 18626] close(3)                    = 0
[pid 18626] write(1, "executing program\n", 18executing program
) = 18
[pid 18626] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18626] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18626] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18626] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18626] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18626] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18626] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18627 attached
 => {parent_tid=[18627]}, 88) = 18627
[pid 18627] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18626] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18627] <... set_robust_list resumed>) = 0
[pid 18626] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18627] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18626] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18627] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18626] <... futex resumed>)        = 0
[pid 18627] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18626] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18627] <... 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 18627] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18626] <... futex resumed>)        = 0
[pid 18627] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18626] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18627] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18626] <... futex resumed>)        = 0
[pid 18627] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18626] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18627] <... futex resumed>)        = 0
[pid 18626] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18627] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18626] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18627] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18626] <... futex resumed>)        = 0
[pid 18627] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18626] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18627] <... futex resumed>)        = 0
[pid 18626] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18627] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18626] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18627] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18626] <... futex resumed>)        = 0
[pid 18627] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18626] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18627] <... futex resumed>)        = 0
[pid 18626] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18627] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18626] exit_group(0 <unfinished ...>
[pid 18627] <... futex resumed>)        = ?
[pid 18626] <... exit_group resumed>)   = ?
[pid 18627] +++ exited with 0 +++
[pid 18626] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18626, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18628
./strace-static-x86_64: Process 18628 attached
[pid 18628] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18628] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18628] setpgid(0, 0)               = 0
[pid 18628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18628] write(3, "1000", 4)         = 4
[pid 18628] close(3)                    = 0
[pid 18628] write(1, "executing program\n", 18executing program
) = 18
[pid 18628] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18628] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18628] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18628] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18628] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18628] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18628] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18629 attached
 => {parent_tid=[18629]}, 88) = 18629
[pid 18629] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18628] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18628] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18628] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18629] <... set_robust_list resumed>) = 0
[pid 18629] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18629] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18629] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18628] <... futex resumed>)        = 0
[pid 18629] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18628] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18628] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18629] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18629] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18628] <... futex resumed>)        = 0
[pid 18629] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18628] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18629] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18628] <... futex resumed>)        = 0
[pid 18629] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18628] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18629] <... futex resumed>)        = 0
[pid 18628] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18629] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18628] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18629] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18628] <... futex resumed>)        = 0
[pid 18629] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18628] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18629] <... futex resumed>)        = 0
[pid 18628] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18629] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18628] exit_group(0 <unfinished ...>
[pid 18629] <... futex resumed>)        = ?
[pid 18628] <... exit_group resumed>)   = ?
[pid 18629] +++ exited with 0 +++
[pid 18628] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18628, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18630
./strace-static-x86_64: Process 18630 attached
[pid 18630] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18630] setpgid(0, 0)               = 0
[pid 18630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18630] write(3, "1000", 4)         = 4
[pid 18630] close(3)                    = 0
[pid 18630] write(1, "executing program\n", 18executing program
) = 18
[pid 18630] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18630] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18630] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18630] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18630] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18630] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18630] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18631 attached
 => {parent_tid=[18631]}, 88) = 18631
[pid 18631] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18630] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18631] <... set_robust_list resumed>) = 0
[pid 18630] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18631] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18630] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18631] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18630] <... futex resumed>)        = 0
[pid 18631] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18630] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18631] <... 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 18631] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18630] <... futex resumed>)        = 0
[pid 18631] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18630] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18631] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18630] <... futex resumed>)        = 0
[pid 18631] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18630] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18631] <... futex resumed>)        = 0
[pid 18630] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18631] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18630] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18631] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18630] <... futex resumed>)        = 0
[pid 18631] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18630] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18631] <... futex resumed>)        = 0
[pid 18630] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18631] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18630] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18631] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18630] <... futex resumed>)        = 0
[pid 18631] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18630] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18631] <... futex resumed>)        = 0
[pid 18630] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18631] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18630] exit_group(0 <unfinished ...>
[pid 18631] <... futex resumed>)        = ?
[pid 18630] <... exit_group resumed>)   = ?
[pid 18631] +++ exited with 0 +++
[pid 18630] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18630, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18632 attached
 <unfinished ...>
[pid 18632] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18632] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18632] setpgid(0, 0)               = 0
[pid 18632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18632
[pid 18632] <... openat resumed>)       = 3
[pid 18632] write(3, "1000", 4)         = 4
[pid 18632] close(3)                    = 0
executing program
[pid 18632] write(1, "executing program\n", 18) = 18
[pid 18632] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18632] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18632] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18632] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18632] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18632] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18632] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18633]}, 88) = 18633
./strace-static-x86_64: Process 18633 attached
[pid 18633] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18632] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18633] <... set_robust_list resumed>) = 0
[pid 18633] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18633] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18632] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18632] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18633] <... futex resumed>)        = 0
[pid 18632] <... futex resumed>)        = 1
[pid 18633] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18632] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18633] <... 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 18633] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18633] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18632] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18632] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18633] <... futex resumed>)        = 0
[pid 18632] <... futex resumed>)        = 1
[pid 18633] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18632] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18633] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18633] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18632] <... futex resumed>)        = 0
[pid 18633] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18632] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18633] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18632] <... futex resumed>)        = 0
[pid 18633] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18632] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18633] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18633] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18632] <... futex resumed>)        = 0
[pid 18633] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18632] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18633] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18632] <... futex resumed>)        = 0
[pid 18633] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18632] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18633] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18633] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18632] <... futex resumed>)        = 0
[pid 18633] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18632] exit_group(0 <unfinished ...>
[pid 18633] <... futex resumed>)        = ?
[pid 18632] <... exit_group resumed>)   = ?
[pid 18633] +++ exited with 0 +++
[pid 18632] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18632, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18634 attached
, child_tidptr=0x55557c828690) = 18634
[pid 18634] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18634] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18634] setpgid(0, 0)               = 0
[pid 18634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18634] write(3, "1000", 4)         = 4
[pid 18634] close(3)                    = 0
[pid 18634] write(1, "executing program\n", 18executing program
) = 18
[pid 18634] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18634] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18634] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18634] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18634] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18634] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18635 attached
 => {parent_tid=[18635]}, 88) = 18635
[pid 18635] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18634] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18635] <... set_robust_list resumed>) = 0
[pid 18634] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18635] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18634] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18635] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18634] <... futex resumed>)        = 0
[pid 18635] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18634] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18635] <... 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 18635] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18634] <... futex resumed>)        = 0
[pid 18635] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18634] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18635] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18634] <... futex resumed>)        = 0
[pid 18635] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18634] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18635] <... futex resumed>)        = 0
[pid 18634] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18635] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18634] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18635] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18634] <... futex resumed>)        = 0
[pid 18635] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18634] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18635] <... futex resumed>)        = 0
[pid 18634] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18635] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18634] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18635] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18634] <... futex resumed>)        = 0
[pid 18635] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18634] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18635] <... futex resumed>)        = 0
[pid 18634] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18635] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18634] exit_group(0 <unfinished ...>
[pid 18635] <... futex resumed>)        = ?
[pid 18634] <... exit_group resumed>)   = ?
[pid 18635] +++ exited with 0 +++
[pid 18634] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18634, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18636 attached
 <unfinished ...>
[pid 18636] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18636
[pid 18636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18636] setpgid(0, 0)               = 0
[pid 18636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18636] write(3, "1000", 4)         = 4
[pid 18636] close(3)                    = 0
executing program
[pid 18636] write(1, "executing program\n", 18) = 18
[pid 18636] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18636] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18636] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18636] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18636] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18636] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18637]}, 88) = 18637
./strace-static-x86_64: Process 18637 attached
[pid 18637] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18637] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18636] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18636] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18637] <... futex resumed>)        = 0
[pid 18636] <... futex resumed>)        = 1
[pid 18637] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18636] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18637] <... 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 18637] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18637] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18636] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18636] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18637] <... futex resumed>)        = 0
[pid 18636] <... futex resumed>)        = 1
[pid 18637] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18636] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18637] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18637] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18636] <... futex resumed>)        = 0
[pid 18637] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18636] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18637] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18636] <... futex resumed>)        = 0
[pid 18637] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18636] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18637] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18637] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18636] <... futex resumed>)        = 0
[pid 18637] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18636] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18637] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18636] <... futex resumed>)        = 0
[pid 18637] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18636] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18637] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18637] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18636] <... futex resumed>)        = 0
[pid 18637] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18636] exit_group(0 <unfinished ...>
[pid 18637] <... futex resumed>)        = ?
[pid 18636] <... exit_group resumed>)   = ?
[pid 18637] +++ exited with 0 +++
[pid 18636] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18636, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18638
./strace-static-x86_64: Process 18638 attached
[pid 18638] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18638] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18638] setpgid(0, 0)               = 0
[pid 18638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18638] write(3, "1000", 4)         = 4
[pid 18638] close(3)                    = 0
[pid 18638] write(1, "executing program\n", 18) = 18
[pid 18638] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000executing program
) = 0
[pid 18638] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18638] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18638] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18638] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18638] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18639]}, 88) = 18639
./strace-static-x86_64: Process 18639 attached
[pid 18639] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18638] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18639] <... set_robust_list resumed>) = 0
[pid 18638] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18639] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18638] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18639] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18638] <... futex resumed>)        = 0
[pid 18639] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18638] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18639] <... 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 18639] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18638] <... futex resumed>)        = 0
[pid 18639] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18638] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18639] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18638] <... futex resumed>)        = 0
[pid 18639] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18638] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18639] <... futex resumed>)        = 0
[pid 18638] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18639] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18638] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18639] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18638] <... futex resumed>)        = 0
[pid 18639] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18638] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18639] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18638] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18639] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18638] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18639] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18638] <... futex resumed>)        = 0
[pid 18639] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18638] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18639] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18638] <... futex resumed>)        = 0
[pid 18639] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18638] exit_group(0 <unfinished ...>
[pid 18639] <... futex resumed>)        = ?
[pid 18638] <... exit_group resumed>)   = ?
[pid 18639] +++ exited with 0 +++
[pid 18638] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18638, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18640 attached
 <unfinished ...>
[pid 18640] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18640] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18640
[pid 18640] <... prctl resumed>)        = 0
[pid 18640] setpgid(0, 0)               = 0
[pid 18640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18640] write(3, "1000", 4)         = 4
[pid 18640] close(3executing program
)                    = 0
[pid 18640] write(1, "executing program\n", 18) = 18
[pid 18640] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18640] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18640] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18640] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18640] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18640] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18641 attached
 => {parent_tid=[18641]}, 88) = 18641
[pid 18641] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18640] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18641] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18640] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18641] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18640] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18641] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18640] <... futex resumed>)        = 0
[pid 18641] <... 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 18640] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18641] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18640] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18640] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18640] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18641] <... futex resumed>)        = 1
[pid 18640] <... futex resumed>)        = 0
[pid 18640] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=49000000} <unfinished ...>
[pid 18641] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18641] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18640] <... futex resumed>)        = 0
[pid 18641] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18640] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18641] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18640] <... futex resumed>)        = 0
[pid 18641] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18640] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18641] <... futex resumed>)        = 0
[pid 18640] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18641] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18640] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18641] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18640] <... futex resumed>)        = 0
[pid 18641] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18640] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18641] <... futex resumed>)        = 0
[pid 18640] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18641] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18640] exit_group(0 <unfinished ...>
[pid 18641] <... futex resumed>)        = ?
[pid 18640] <... exit_group resumed>)   = ?
[pid 18641] +++ exited with 0 +++
[pid 18640] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18640, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18642 attached
, child_tidptr=0x55557c828690) = 18642
[pid 18642] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18642] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18642] setpgid(0, 0)               = 0
[pid 18642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18642] write(3, "1000", 4)         = 4
executing program
[pid 18642] close(3)                    = 0
[pid 18642] write(1, "executing program\n", 18) = 18
[pid 18642] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18642] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18642] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18642] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18642] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18642] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18642] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18643]}, 88) = 18643
[pid 18642] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18642] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18642] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18643 attached
 <unfinished ...>
[pid 18643] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18643] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18643] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18643] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18642] <... futex resumed>)        = 0
[pid 18643] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18642] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18643] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18642] <... futex resumed>)        = 0
[pid 18643] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18642] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18643] <... futex resumed>)        = 0
[pid 18642] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18643] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18642] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18643] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18642] <... futex resumed>)        = 0
[pid 18643] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18642] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18643] <... futex resumed>)        = 0
[pid 18642] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18643] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18642] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18643] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18642] <... futex resumed>)        = 0
[pid 18643] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18642] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18643] <... futex resumed>)        = 0
[pid 18642] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18643] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18642] exit_group(0 <unfinished ...>
[pid 18643] <... futex resumed>)        = ?
[pid 18642] <... exit_group resumed>)   = ?
[pid 18643] +++ exited with 0 +++
[pid 18642] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18642, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18644
./strace-static-x86_64: Process 18644 attached
[pid 18644] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18644] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18644] setpgid(0, 0)               = 0
[pid 18644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18644] write(3, "1000", 4)         = 4
[pid 18644] close(3)                    = 0
[pid 18644] write(1, "executing program\n", 18executing program
) = 18
[pid 18644] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18644] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18644] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18644] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18644] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18644] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18644] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18645 attached
 => {parent_tid=[18645]}, 88) = 18645
[pid 18645] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18644] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18645] <... set_robust_list resumed>) = 0
[pid 18644] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18645] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18644] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18645] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18644] <... futex resumed>)        = 0
[pid 18644] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18645] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18645] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18645] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18644] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18644] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18645] <... futex resumed>)        = 0
[pid 18644] <... futex resumed>)        = 1
[pid 18645] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18644] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18645] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18645] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18645] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18644] <... futex resumed>)        = 0
[pid 18644] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18645] <... futex resumed>)        = 0
[pid 18644] <... futex resumed>)        = 1
[pid 18645] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18644] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18645] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18645] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18645] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18644] <... futex resumed>)        = 0
[pid 18644] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18645] <... futex resumed>)        = 0
[pid 18644] <... futex resumed>)        = 1
[pid 18645] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18644] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18645] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18645] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18644] <... futex resumed>)        = 0
[pid 18645] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18644] exit_group(0 <unfinished ...>
[pid 18645] <... futex resumed>)        = ?
[pid 18644] <... exit_group resumed>)   = ?
[pid 18645] +++ exited with 0 +++
[pid 18644] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18644, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18646 attached
, child_tidptr=0x55557c828690) = 18646
[pid 18646] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18646] setpgid(0, 0)               = 0
[pid 18646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18646] write(3, "1000", 4)         = 4
executing program
[pid 18646] close(3)                    = 0
[pid 18646] write(1, "executing program\n", 18) = 18
[pid 18646] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18646] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18646] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18646] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18646] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18646] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18646] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18647]}, 88) = 18647
./strace-static-x86_64: Process 18647 attached
[pid 18647] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18646] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18647] <... set_robust_list resumed>) = 0
[pid 18646] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18647] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18646] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18647] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18646] <... futex resumed>)        = 0
[pid 18647] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18646] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18647] <... 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 18647] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18646] <... futex resumed>)        = 0
[pid 18647] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18646] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18647] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18646] <... futex resumed>)        = 0
[pid 18647] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18646] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18647] <... futex resumed>)        = 0
[pid 18646] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18647] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18646] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18647] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18646] <... futex resumed>)        = 0
[pid 18647] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18646] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18647] <... futex resumed>)        = 0
[pid 18646] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18647] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18646] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18647] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18646] <... futex resumed>)        = 0
[pid 18647] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18646] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18647] <... futex resumed>)        = 0
[pid 18646] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18647] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18646] exit_group(0 <unfinished ...>
[pid 18647] <... futex resumed>)        = ?
[pid 18646] <... exit_group resumed>)   = ?
[pid 18647] +++ exited with 0 +++
[pid 18646] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18646, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18648
./strace-static-x86_64: Process 18648 attached
[pid 18648] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18648] setpgid(0, 0)               = 0
[pid 18648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18648] write(3, "1000", 4)         = 4
[pid 18648] close(3executing program
)                    = 0
[pid 18648] write(1, "executing program\n", 18) = 18
[pid 18648] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18648] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18648] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18648] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18648] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18648] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18648] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18649 attached
 => {parent_tid=[18649]}, 88) = 18649
[pid 18648] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18648] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18648] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18649] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18649] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18649] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18649] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18648] <... futex resumed>)        = 0
[pid 18648] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18648] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18649] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18649] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18648] <... futex resumed>)        = 0
[pid 18648] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18648] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18649] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18649] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18648] <... futex resumed>)        = 0
[pid 18648] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18648] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18649] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18649] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18648] <... futex resumed>)        = 0
[pid 18648] exit_group(0)               = ?
[pid 18649] +++ exited with 0 +++
[pid 18648] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18648, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18650
./strace-static-x86_64: Process 18650 attached
[pid 18650] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18650] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18650] setpgid(0, 0)               = 0
[pid 18650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18650] write(3, "1000", 4)         = 4
[pid 18650] close(3)                    = 0
[pid 18650] write(1, "executing program\n", 18executing program
) = 18
[pid 18650] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18650] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18650] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18650] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18650] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18650] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18650] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18651]}, 88) = 18651
[pid 18650] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18650] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18650] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18651 attached
 <unfinished ...>
[pid 18651] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18651] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18651] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18651] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18650] <... futex resumed>)        = 0
[pid 18650] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18650] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18651] <... futex resumed>)        = 1
[pid 18651] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18651] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18650] <... futex resumed>)        = 0
[pid 18650] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18650] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18651] <... futex resumed>)        = 1
[pid 18651] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18651] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18650] <... futex resumed>)        = 0
[pid 18650] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18650] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18651] <... futex resumed>)        = 1
[pid 18651] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18651] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18650] <... futex resumed>)        = 0
[pid 18650] exit_group(0)               = ?
[pid 18651] <... futex resumed>)        = ?
[pid 18651] +++ exited with 0 +++
[pid 18650] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18650, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18652
./strace-static-x86_64: Process 18652 attached
[pid 18652] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18652] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18652] setpgid(0, 0)               = 0
[pid 18652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18652] write(3, "1000", 4)         = 4
[pid 18652] close(3)                    = 0
executing program
[pid 18652] write(1, "executing program\n", 18) = 18
[pid 18652] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18652] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18652] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18652] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18652] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18652] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18652] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18653 attached
 => {parent_tid=[18653]}, 88) = 18653
[pid 18652] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18653] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18652] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18653] <... set_robust_list resumed>) = 0
[pid 18652] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18653] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18652] <... futex resumed>)        = 0
[pid 18653] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18652] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18653] <... 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 18653] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18652] <... futex resumed>)        = 0
[pid 18652] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18652] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18653] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18653] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18652] <... futex resumed>)        = 0
[pid 18652] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18652] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18653] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18653] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18652] <... futex resumed>)        = 0
[pid 18652] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18652] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18653] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18653] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18652] <... futex resumed>)        = 0
[pid 18652] exit_group(0)               = ?
[pid 18653] +++ exited with 0 +++
[pid 18652] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18652, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18654
./strace-static-x86_64: Process 18654 attached
[pid 18654] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18654] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18654] setpgid(0, 0)               = 0
[pid 18654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18654] write(3, "1000", 4)         = 4
[pid 18654] close(3)                    = 0
[pid 18654] write(1, "executing program\n", 18executing program
) = 18
[pid 18654] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18654] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18654] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18654] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18654] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18654] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18654] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18655]}, 88) = 18655
[pid 18654] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18654] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18654] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18655 attached
 <unfinished ...>
[pid 18655] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18655] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18655] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18655] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18654] <... futex resumed>)        = 0
[pid 18654] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18654] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18655] <... futex resumed>)        = 1
[pid 18655] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18655] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18654] <... futex resumed>)        = 0
[pid 18654] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18654] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18655] <... futex resumed>)        = 1
[pid 18655] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18655] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18654] <... futex resumed>)        = 0
[pid 18654] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18654] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18655] <... futex resumed>)        = 1
[pid 18655] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18655] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18654] <... futex resumed>)        = 0
[pid 18654] exit_group(0)               = ?
[pid 18655] <... futex resumed>)        = ?
[pid 18655] +++ exited with 0 +++
[pid 18654] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18654, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18656
./strace-static-x86_64: Process 18656 attached
[pid 18656] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18656] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18656] setpgid(0, 0)               = 0
[pid 18656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18656] write(3, "1000", 4)         = 4
[pid 18656] close(3)                    = 0
executing program
[pid 18656] write(1, "executing program\n", 18) = 18
[pid 18656] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18656] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18656] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18656] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18656] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18656] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18656] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18657]}, 88) = 18657
./strace-static-x86_64: Process 18657 attached
[pid 18657] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18657] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18657] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18656] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18656] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18657] <... futex resumed>)        = 0
[pid 18657] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18656] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18657] <... 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 18657] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18656] <... futex resumed>)        = 0
[pid 18656] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18656] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18657] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18657] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18656] <... futex resumed>)        = 0
[pid 18656] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18656] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18657] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18657] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18656] <... futex resumed>)        = 0
[pid 18656] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18656] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18657] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18657] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18656] <... futex resumed>)        = 0
[pid 18656] exit_group(0)               = ?
[pid 18657] +++ exited with 0 +++
[pid 18656] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18656, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18658 attached
, child_tidptr=0x55557c828690) = 18658
[pid 18658] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18658] setpgid(0, 0)               = 0
[pid 18658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18658] write(3, "1000", 4)         = 4
[pid 18658] close(3)                    = 0
executing program
[pid 18658] write(1, "executing program\n", 18) = 18
[pid 18658] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18658] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18658] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18658] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18658] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18658] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18658] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18659]}, 88) = 18659
[pid 18658] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18658] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18658] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18659 attached
 <unfinished ...>
[pid 18659] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18659] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18659] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18659] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18658] <... futex resumed>)        = 0
[pid 18658] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18658] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18659] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18659] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18658] <... futex resumed>)        = 0
[pid 18658] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18658] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18659] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18659] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18658] <... futex resumed>)        = 0
[pid 18658] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18658] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18659] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18659] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18658] <... futex resumed>)        = 0
[pid 18658] exit_group(0)               = ?
[pid 18659] +++ exited with 0 +++
[pid 18658] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18658, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18660 attached
 <unfinished ...>
[pid 18660] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18660] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18660] setpgid(0, 0)               = 0
[pid 18660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18660
[pid 18660] <... openat resumed>)       = 3
[pid 18660] write(3, "1000", 4)         = 4
[pid 18660] close(3)                    = 0
[pid 18660] write(1, "executing program\n", 18executing program
) = 18
[pid 18660] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18660] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18660] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18660] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18660] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18660] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18660] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18661]}, 88) = 18661
[pid 18660] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18660] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18660] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18661 attached
 <unfinished ...>
[pid 18661] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18661] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18661] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18661] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18660] <... futex resumed>)        = 0
[pid 18660] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18660] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18661] <... futex resumed>)        = 1
[pid 18661] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18661] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18660] <... futex resumed>)        = 0
[pid 18660] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18660] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18661] <... futex resumed>)        = 1
[pid 18661] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18661] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18660] <... futex resumed>)        = 0
[pid 18660] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18660] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18661] <... futex resumed>)        = 1
[pid 18661] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18661] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18660] <... futex resumed>)        = 0
[pid 18661] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18660] exit_group(0 <unfinished ...>
[pid 18661] <... futex resumed>)        = ?
[pid 18660] <... exit_group resumed>)   = ?
[pid 18661] +++ exited with 0 +++
[pid 18660] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18660, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18662 attached
, child_tidptr=0x55557c828690) = 18662
[pid 18662] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18662] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18662] setpgid(0, 0)               = 0
[pid 18662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18662] write(3, "1000", 4)         = 4
[pid 18662] close(3executing program
)                    = 0
[pid 18662] write(1, "executing program\n", 18) = 18
[pid 18662] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18662] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18662] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18662] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18662] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18662] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18662] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18663 attached
 => {parent_tid=[18663]}, 88) = 18663
[pid 18662] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18663] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18662] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18663] <... set_robust_list resumed>) = 0
[pid 18662] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18663] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18662] <... futex resumed>)        = 0
[pid 18663] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18663] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18662] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18663] <... 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 18663] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18662] <... futex resumed>)        = 0
[pid 18662] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18662] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18663] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18663] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18662] <... futex resumed>)        = 0
[pid 18662] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18662] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18663] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18663] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18662] <... futex resumed>)        = 0
[pid 18662] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18662] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18663] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18663] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18663] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18662] <... futex resumed>)        = 0
[pid 18662] exit_group(0)               = ?
[pid 18663] <... futex resumed>)        = ?
[pid 18663] +++ exited with 0 +++
[pid 18662] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18662, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18664
./strace-static-x86_64: Process 18664 attached
[pid 18664] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18664] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18664] setpgid(0, 0)               = 0
[pid 18664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18664] write(3, "1000", 4)         = 4
[pid 18664] close(3)                    = 0
[pid 18664] write(1, "executing program\n", 18executing program
) = 18
[pid 18664] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18664] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18664] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18664] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18664] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18664] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18664] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18665 attached
 => {parent_tid=[18665]}, 88) = 18665
[pid 18664] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18664] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18664] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18665] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18665] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18665] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18665] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18664] <... futex resumed>)        = 0
[pid 18664] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18665] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18664] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18665] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18665] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18664] <... futex resumed>)        = 0
[pid 18664] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18664] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18665] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18665] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18664] <... futex resumed>)        = 0
[pid 18664] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18664] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18665] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18665] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18664] <... futex resumed>)        = 0
[pid 18664] exit_group(0)               = ?
[pid 18665] +++ exited with 0 +++
[pid 18664] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18664, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18666
./strace-static-x86_64: Process 18666 attached
[pid 18666] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18666] setpgid(0, 0)               = 0
[pid 18666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18666] write(3, "1000", 4)         = 4
[pid 18666] close(3)                    = 0
[pid 18666] write(1, "executing program\n", 18executing program
) = 18
[pid 18666] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18666] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18666] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18666] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18666] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18666] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18666] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18667 attached
 => {parent_tid=[18667]}, 88) = 18667
[pid 18667] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18666] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18667] <... set_robust_list resumed>) = 0
[pid 18667] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18666] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18667] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18666] <... futex resumed>)        = 0
[pid 18667] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18666] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18667] <... 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 18667] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18666] <... futex resumed>)        = 0
[pid 18666] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18666] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18667] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18667] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18666] <... futex resumed>)        = 0
[pid 18666] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18666] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18667] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18667] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18666] <... futex resumed>)        = 0
[pid 18667] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18666] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18667] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18666] <... futex resumed>)        = 0
[pid 18667] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18666] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18667] <... futex resumed>)        = 0
[pid 18666] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18667] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18666] exit_group(0 <unfinished ...>
[pid 18667] <... futex resumed>)        = ?
[pid 18666] <... exit_group resumed>)   = ?
[pid 18667] +++ exited with 0 +++
[pid 18666] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18666, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18668
./strace-static-x86_64: Process 18668 attached
[pid 18668] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18668] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18668] setpgid(0, 0)               = 0
[pid 18668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18668] write(3, "1000", 4)         = 4
[pid 18668] close(3executing program
)                    = 0
[pid 18668] write(1, "executing program\n", 18) = 18
[pid 18668] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18668] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18668] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18668] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18668] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18668] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18668] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18669]}, 88) = 18669
[pid 18668] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18668] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18668] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18669 attached
 <unfinished ...>
[pid 18669] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18669] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18669] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18669] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18668] <... futex resumed>)        = 0
[pid 18668] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18668] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18669] <... futex resumed>)        = 1
[pid 18669] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18669] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18668] <... futex resumed>)        = 0
[pid 18668] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18668] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18669] <... futex resumed>)        = 1
[pid 18669] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18669] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18668] <... futex resumed>)        = 0
[pid 18668] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18668] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18669] <... futex resumed>)        = 1
[pid 18669] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18669] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18668] <... futex resumed>)        = 0
[pid 18668] exit_group(0)               = ?
[pid 18669] <... futex resumed>)        = ?
[pid 18669] +++ exited with 0 +++
[pid 18668] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18668, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18670
./strace-static-x86_64: Process 18670 attached
[pid 18670] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18670] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18670] setpgid(0, 0)               = 0
[pid 18670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18670] write(3, "1000", 4)         = 4
[pid 18670] close(3)                    = 0
executing program
[pid 18670] write(1, "executing program\n", 18) = 18
[pid 18670] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18670] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18670] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18670] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18670] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18670] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18670] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18671]}, 88) = 18671
./strace-static-x86_64: Process 18671 attached
[pid 18671] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18671] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18671] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18670] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18670] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18671] <... futex resumed>)        = 0
[pid 18671] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18670] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18671] <... 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 18671] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18671] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18670] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18670] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18671] <... futex resumed>)        = 0
[pid 18671] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18670] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18671] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18670] <... futex resumed>)        = 0
[pid 18670] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18670] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18671] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18671] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18670] <... futex resumed>)        = 0
[pid 18670] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18670] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18671] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18671] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18670] <... futex resumed>)        = 0
[pid 18670] exit_group(0)               = ?
[pid 18671] +++ exited with 0 +++
[pid 18670] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18670, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18672
./strace-static-x86_64: Process 18672 attached
[pid 18672] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18672] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18672] setpgid(0, 0)               = 0
[pid 18672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18672] write(3, "1000", 4)         = 4
[pid 18672] close(3)                    = 0
executing program
[pid 18672] write(1, "executing program\n", 18) = 18
[pid 18672] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18672] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18672] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18672] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18672] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18672] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18672] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18673]}, 88) = 18673
./strace-static-x86_64: Process 18673 attached
[pid 18672] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18673] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18672] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18673] <... set_robust_list resumed>) = 0
[pid 18672] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18673] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18672] <... futex resumed>)        = 0
[pid 18672] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18673] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18673] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18673] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18672] <... futex resumed>)        = 0
[pid 18672] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18672] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18673] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18673] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18672] <... futex resumed>)        = 0
[pid 18672] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18672] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18673] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18673] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18672] <... futex resumed>)        = 0
[pid 18672] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18672] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18673] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18673] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18672] <... futex resumed>)        = 0
[pid 18672] exit_group(0)               = ?
[pid 18673] +++ exited with 0 +++
[pid 18672] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18672, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18674 attached
, child_tidptr=0x55557c828690) = 18674
[pid 18674] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18674] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18674] setpgid(0, 0)               = 0
[pid 18674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18674] write(3, "1000", 4)         = 4
[pid 18674] close(3executing program
)                    = 0
[pid 18674] write(1, "executing program\n", 18) = 18
[pid 18674] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18674] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18674] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18674] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18674] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18674] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18674] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18675 attached
 => {parent_tid=[18675]}, 88) = 18675
[pid 18674] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18674] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18674] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18675] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18675] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18675] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18675] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18674] <... futex resumed>)        = 0
[pid 18674] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18674] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18675] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18675] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18674] <... futex resumed>)        = 0
[pid 18674] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18674] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18675] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18675] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18674] <... futex resumed>)        = 0
[pid 18674] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18674] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18675] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18675] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18674] <... futex resumed>)        = 0
[pid 18674] exit_group(0)               = ?
[pid 18675] +++ exited with 0 +++
[pid 18674] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18674, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18676 attached
 <unfinished ...>
[pid 18676] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18676] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18676
[pid 18676] <... prctl resumed>)        = 0
[pid 18676] setpgid(0, 0)               = 0
[pid 18676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18676] write(3, "1000", 4executing program
)         = 4
[pid 18676] close(3)                    = 0
[pid 18676] write(1, "executing program\n", 18) = 18
[pid 18676] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18676] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18676] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18676] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18676] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18676] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18676] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18677 attached
 => {parent_tid=[18677]}, 88) = 18677
[pid 18676] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18676] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18676] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18677] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18677] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18677] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18677] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18676] <... futex resumed>)        = 0
[pid 18676] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18676] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18677] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18677] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18676] <... futex resumed>)        = 0
[pid 18676] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18676] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18677] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18677] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18676] <... futex resumed>)        = 0
[pid 18676] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18676] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18677] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18677] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18676] <... futex resumed>)        = 0
[pid 18676] exit_group(0)               = ?
[pid 18677] +++ exited with 0 +++
[pid 18676] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18676, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18678 attached
, child_tidptr=0x55557c828690) = 18678
[pid 18678] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18678] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18678] setpgid(0, 0)               = 0
[pid 18678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18678] write(3, "1000", 4)         = 4
[pid 18678] close(3executing program
)                    = 0
[pid 18678] write(1, "executing program\n", 18) = 18
[pid 18678] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18678] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18678] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18678] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18678] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18678] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18678] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18679]}, 88) = 18679
./strace-static-x86_64: Process 18679 attached
[pid 18678] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18678] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18678] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18679] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18679] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18679] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18679] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18678] <... futex resumed>)        = 0
[pid 18678] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18678] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18679] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18679] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18678] <... futex resumed>)        = 0
[pid 18678] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18678] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18679] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18679] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18678] <... futex resumed>)        = 0
[pid 18678] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18678] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18679] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18679] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18679] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18678] <... futex resumed>)        = 0
[pid 18678] exit_group(0 <unfinished ...>
[pid 18679] <... futex resumed>)        = ?
[pid 18678] <... exit_group resumed>)   = ?
[pid 18679] +++ exited with 0 +++
[pid 18678] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18678, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18680 attached
 <unfinished ...>
[pid 18680] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18680] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18680] setpgid(0, 0)               = 0
[pid 18680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18680
[pid 18680] <... openat resumed>)       = 3
[pid 18680] write(3, "1000", 4)         = 4
[pid 18680] close(3)                    = 0
[pid 18680] write(1, "executing program\n", 18executing program
) = 18
[pid 18680] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18680] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18680] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18680] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18680] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18680] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18680] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18681]}, 88) = 18681
./strace-static-x86_64: Process 18681 attached
[pid 18681] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18680] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18681] <... set_robust_list resumed>) = 0
[pid 18680] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18681] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18680] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18681] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18680] <... futex resumed>)        = 0
[pid 18681] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18680] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18681] <... 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 18681] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18680] <... futex resumed>)        = 0
[pid 18681] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18680] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18681] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18680] <... futex resumed>)        = 0
[pid 18681] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18680] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18681] <... futex resumed>)        = 0
[pid 18680] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18681] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18680] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18681] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18680] <... futex resumed>)        = 0
[pid 18681] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18680] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18681] <... futex resumed>)        = 0
[pid 18680] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18681] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18680] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18681] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18680] <... futex resumed>)        = 0
[pid 18681] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18680] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18681] <... futex resumed>)        = 0
[pid 18680] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18681] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18680] exit_group(0 <unfinished ...>
[pid 18681] <... futex resumed>)        = ?
[pid 18680] <... exit_group resumed>)   = ?
[pid 18681] +++ exited with 0 +++
[pid 18680] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18680, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18682
./strace-static-x86_64: Process 18682 attached
[pid 18682] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18682] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18682] setpgid(0, 0)               = 0
[pid 18682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18682] write(3, "1000", 4)         = 4
[pid 18682] close(3)                    = 0
[pid 18682] write(1, "executing program\n", 18executing program
) = 18
[pid 18682] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18682] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18682] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18682] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18682] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18682] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18682] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18683]}, 88) = 18683
./strace-static-x86_64: Process 18683 attached
[pid 18682] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18682] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18682] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18683] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18683] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18683] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18683] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18683] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18682] <... futex resumed>)        = 0
[pid 18682] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18683] <... futex resumed>)        = 0
[pid 18682] <... futex resumed>)        = 1
[pid 18683] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18682] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18683] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18683] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18682] <... futex resumed>)        = 0
[pid 18683] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18682] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18683] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18682] <... futex resumed>)        = 0
[pid 18683] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18682] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18683] <... futex resumed>)        = 0
[pid 18682] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18682] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18683] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18682] <... futex resumed>)        = 0
[pid 18683] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18682] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18683] <... futex resumed>)        = 0
[pid 18682] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18683] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18682] exit_group(0 <unfinished ...>
[pid 18683] <... futex resumed>)        = ?
[pid 18682] <... exit_group resumed>)   = ?
[pid 18683] +++ exited with 0 +++
[pid 18682] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18682, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18684
./strace-static-x86_64: Process 18684 attached
[pid 18684] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18684] setpgid(0, 0)               = 0
[pid 18684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18684] write(3, "1000", 4)         = 4
[pid 18684] close(3)                    = 0
[pid 18684] write(1, "executing program\n", 18executing program
) = 18
[pid 18684] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18684] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18684] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18684] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18684] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18684] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18684] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18685 attached
 => {parent_tid=[18685]}, 88) = 18685
[pid 18684] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18684] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18684] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18685] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18685] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18685] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18685] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18684] <... futex resumed>)        = 0
[pid 18685] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18684] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18685] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18684] <... futex resumed>)        = 0
[pid 18685] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18684] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18685] <... futex resumed>)        = 0
[pid 18684] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18685] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18684] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18685] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18684] <... futex resumed>)        = 0
[pid 18685] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18684] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18685] <... futex resumed>)        = 0
[pid 18684] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18685] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18684] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18685] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18684] <... futex resumed>)        = 0
[pid 18685] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18684] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18685] <... futex resumed>)        = 0
[pid 18684] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18685] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18684] exit_group(0 <unfinished ...>
[pid 18685] <... futex resumed>)        = ?
[pid 18684] <... exit_group resumed>)   = ?
[pid 18685] +++ exited with 0 +++
[pid 18684] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18684, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18686
./strace-static-x86_64: Process 18686 attached
[pid 18686] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18686] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18686] setpgid(0, 0)               = 0
[pid 18686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18686] write(3, "1000", 4)         = 4
[pid 18686] close(3)                    = 0
[pid 18686] write(1, "executing program\n", 18executing program
) = 18
[pid 18686] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18686] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18686] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18686] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18686] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18686] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18686] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18687]}, 88) = 18687
[pid 18686] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18686] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18686] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18687 attached
 <unfinished ...>
[pid 18687] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18687] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18687] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18687] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18686] <... futex resumed>)        = 0
[pid 18687] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18686] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18687] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18686] <... futex resumed>)        = 0
[pid 18687] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18686] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18687] <... futex resumed>)        = 0
[pid 18686] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18687] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18686] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18687] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18686] <... futex resumed>)        = 0
[pid 18687] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18686] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18687] <... futex resumed>)        = 0
[pid 18686] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18687] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18686] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18687] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18686] <... futex resumed>)        = 0
[pid 18687] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18686] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18687] <... futex resumed>)        = 0
[pid 18687] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18686] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18686] exit_group(0 <unfinished ...>
[pid 18687] <... futex resumed>)        = ?
[pid 18686] <... exit_group resumed>)   = ?
[pid 18687] +++ exited with 0 +++
[pid 18686] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18686, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18688 attached
 <unfinished ...>
[pid 18688] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18688] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18688] setpgid(0, 0)               = 0
[pid 18688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18688
[pid 18688] <... openat resumed>)       = 3
[pid 18688] write(3, "1000", 4)         = 4
[pid 18688] close(3)                    = 0
executing program
[pid 18688] write(1, "executing program\n", 18) = 18
[pid 18688] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18688] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18688] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18688] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18688] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18688] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18688] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18689]}, 88) = 18689
./strace-static-x86_64: Process 18689 attached
[pid 18689] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18689] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18689] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18688] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18688] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18689] <... futex resumed>)        = 0
[pid 18688] <... futex resumed>)        = 1
[pid 18689] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18688] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18689] <... 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 18689] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18688] <... futex resumed>)        = 0
[pid 18689] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18688] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18689] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18688] <... futex resumed>)        = 0
[pid 18689] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18688] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18689] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18689] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18688] <... futex resumed>)        = 0
[pid 18689] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18688] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18689] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18688] <... futex resumed>)        = 0
[pid 18689] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18688] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18689] <... futex resumed>)        = 0
[pid 18688] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18689] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18688] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18689] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18688] <... futex resumed>)        = 0
[pid 18689] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18688] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18689] <... futex resumed>)        = 0
[pid 18688] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18689] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18688] exit_group(0 <unfinished ...>
[pid 18689] <... futex resumed>)        = ?
[pid 18688] <... exit_group resumed>)   = ?
[pid 18689] +++ exited with 0 +++
[pid 18688] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18688, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18690 attached
, child_tidptr=0x55557c828690) = 18690
[pid 18690] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18690] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18690] setpgid(0, 0)               = 0
[pid 18690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18690] write(3, "1000", 4)         = 4
executing program
[pid 18690] close(3)                    = 0
[pid 18690] write(1, "executing program\n", 18) = 18
[pid 18690] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18690] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18690] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18690] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18690] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18690] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18690] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18691]}, 88) = 18691
[pid 18690] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18690] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18690] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18691 attached
 <unfinished ...>
[pid 18691] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18691] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18691] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18691] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18690] <... futex resumed>)        = 0
[pid 18691] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18690] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18691] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18691] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18690] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18691] <... futex resumed>)        = 0
[pid 18690] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18691] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18690] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18691] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18690] <... futex resumed>)        = 0
[pid 18691] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18690] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18691] <... futex resumed>)        = 0
[pid 18690] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18691] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18690] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18691] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18690] <... futex resumed>)        = 0
[pid 18691] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18690] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18691] <... futex resumed>)        = 0
[pid 18690] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18691] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18690] exit_group(0 <unfinished ...>
[pid 18691] <... futex resumed>)        = ?
[pid 18690] <... exit_group resumed>)   = ?
[pid 18691] +++ exited with 0 +++
[pid 18690] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18690, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18692 attached
 <unfinished ...>
[pid 18692] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18692] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18692] setpgid(0, 0)               = 0
[pid 18692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18692] write(3, "1000", 4)         = 4
[pid 18692] close(3executing program
)                    = 0
[pid 18692] write(1, "executing program\n", 18) = 18
[pid 18692] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18692] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18692] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18692] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18692] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18692
[pid 18692] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18692] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18693]}, 88) = 18693
[pid 18692] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18692] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18692] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18693 attached
 <unfinished ...>
[pid 18693] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18693] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18693] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18693] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18692] <... futex resumed>)        = 0
[pid 18693] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18692] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18692] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18693] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18693] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18692] <... futex resumed>)        = 0
[pid 18692] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18692] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18693] <... futex resumed>)        = 1
[pid 18693] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18693] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18692] <... futex resumed>)        = 0
[pid 18692] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18692] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18693] <... futex resumed>)        = 1
[pid 18693] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18693] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18692] <... futex resumed>)        = 0
[pid 18692] exit_group(0 <unfinished ...>
[pid 18693] <... futex resumed>)        = 1
[pid 18692] <... exit_group resumed>)   = ?
[pid 18693] +++ exited with 0 +++
[pid 18692] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18692, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18694 attached
, child_tidptr=0x55557c828690) = 18694
[pid 18694] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18694] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18694] setpgid(0, 0)               = 0
[pid 18694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18694] write(3, "1000", 4)         = 4
[pid 18694] close(3)                    = 0
[pid 18694] write(1, "executing program\n", 18executing program
) = 18
[pid 18694] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18694] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18694] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18694] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18694] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18694] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18694] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18695 attached
 => {parent_tid=[18695]}, 88) = 18695
[pid 18694] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18694] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18694] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18695] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18695] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18695] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18695] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18694] <... futex resumed>)        = 0
[pid 18694] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18694] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18695] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18695] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18694] <... futex resumed>)        = 0
[pid 18694] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18695] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18694] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18695] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18695] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18694] <... futex resumed>)        = 0
[pid 18694] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18694] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18695] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18695] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18694] <... futex resumed>)        = 0
[pid 18694] exit_group(0)               = ?
[pid 18695] +++ exited with 0 +++
[pid 18694] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18694, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18696
./strace-static-x86_64: Process 18696 attached
[pid 18696] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18696] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18696] setpgid(0, 0)               = 0
[pid 18696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18696] write(3, "1000", 4)         = 4
[pid 18696] close(3)                    = 0
executing program
[pid 18696] write(1, "executing program\n", 18) = 18
[pid 18696] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18696] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18696] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18696] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18696] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18696] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18696] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18697]}, 88) = 18697
./strace-static-x86_64: Process 18697 attached
[pid 18696] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18697] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18696] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18697] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18696] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18697] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18696] <... futex resumed>)        = 0
[pid 18697] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18696] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18697] <... 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 18697] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18696] <... futex resumed>)        = 0
[pid 18696] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18696] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18697] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18697] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18696] <... futex resumed>)        = 0
[pid 18696] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18696] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18697] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18697] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18696] <... futex resumed>)        = 0
[pid 18696] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18696] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18697] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18697] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18696] <... futex resumed>)        = 0
[pid 18696] exit_group(0)               = ?
[pid 18697] +++ exited with 0 +++
[pid 18696] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18696, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18698 attached
 <unfinished ...>
[pid 18698] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18698
[pid 18698] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18698] setpgid(0, 0)               = 0
[pid 18698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18698] write(3, "1000", 4)         = 4
[pid 18698] close(3executing program
)                    = 0
[pid 18698] write(1, "executing program\n", 18) = 18
[pid 18698] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18698] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18698] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18698] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18698] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18698] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18698] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18699]}, 88) = 18699
[pid 18698] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18698] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18698] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18699 attached
 <unfinished ...>
[pid 18699] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18699] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18699] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18699] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18698] <... futex resumed>)        = 0
[pid 18698] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18698] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18699] <... futex resumed>)        = 1
[pid 18699] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18699] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18698] <... futex resumed>)        = 0
[pid 18698] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18698] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18699] <... futex resumed>)        = 1
[pid 18699] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18699] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18698] <... futex resumed>)        = 0
[pid 18698] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18698] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18699] <... futex resumed>)        = 1
[pid 18699] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18699] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18698] <... futex resumed>)        = 0
[pid 18698] exit_group(0)               = ?
[pid 18699] <... futex resumed>)        = ?
[pid 18699] +++ exited with 0 +++
[pid 18698] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18698, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18700 attached
, child_tidptr=0x55557c828690) = 18700
[pid 18700] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18700] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18700] setpgid(0, 0)               = 0
[pid 18700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18700] write(3, "1000", 4)         = 4
[pid 18700] close(3executing program
)                    = 0
[pid 18700] write(1, "executing program\n", 18) = 18
[pid 18700] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18700] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18700] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18700] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18700] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18700] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18700] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18701]}, 88) = 18701
./strace-static-x86_64: Process 18701 attached
[pid 18700] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18700] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18700] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18701] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18701] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18701] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18701] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18700] <... futex resumed>)        = 0
[pid 18700] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18701] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18700] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18701] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18701] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18700] <... futex resumed>)        = 0
[pid 18700] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18700] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18701] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18701] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18700] <... futex resumed>)        = 0
[pid 18700] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18700] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18701] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18701] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18700] <... futex resumed>)        = 0
[pid 18700] exit_group(0)               = ?
[pid 18701] +++ exited with 0 +++
[pid 18700] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18700, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18702 attached
, child_tidptr=0x55557c828690) = 18702
[pid 18702] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18702] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18702] setpgid(0, 0)               = 0
[pid 18702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18702] write(3, "1000", 4)         = 4
[pid 18702] close(3)                    = 0
[pid 18702] write(1, "executing program\n", 18executing program
) = 18
[pid 18702] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18702] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18702] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18702] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18702] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18702] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18702] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18703]}, 88) = 18703
./strace-static-x86_64: Process 18703 attached
[pid 18702] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18702] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18702] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18703] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18703] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18703] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18703] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18702] <... futex resumed>)        = 0
[pid 18702] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18702] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18703] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18703] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18702] <... futex resumed>)        = 0
[pid 18702] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18702] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18703] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18703] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18702] <... futex resumed>)        = 0
[pid 18702] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18702] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18703] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18703] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18702] <... futex resumed>)        = 0
[pid 18702] exit_group(0)               = ?
[pid 18703] +++ exited with 0 +++
[pid 18702] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18702, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18704
./strace-static-x86_64: Process 18704 attached
[pid 18704] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18704] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18704] setpgid(0, 0)               = 0
[pid 18704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18704] write(3, "1000", 4)         = 4
[pid 18704] close(3)                    = 0
[pid 18704] write(1, "executing program\n", 18executing program
) = 18
[pid 18704] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18704] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18704] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18704] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18704] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18704] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18704] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18705 attached
 => {parent_tid=[18705]}, 88) = 18705
[pid 18704] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18704] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18704] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18705] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18705] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18705] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18705] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18704] <... futex resumed>)        = 0
[pid 18705] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18704] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18705] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18704] <... futex resumed>)        = 0
[pid 18705] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18704] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18705] <... futex resumed>)        = 0
[pid 18704] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18705] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18704] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18705] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18704] <... futex resumed>)        = 0
[pid 18705] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18704] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18705] <... futex resumed>)        = 0
[pid 18704] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18705] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18704] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18705] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18704] <... futex resumed>)        = 0
[pid 18705] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18704] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18705] <... futex resumed>)        = 0
[pid 18704] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18705] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18704] exit_group(0 <unfinished ...>
[pid 18705] <... futex resumed>)        = ?
[pid 18704] <... exit_group resumed>)   = ?
[pid 18705] +++ exited with 0 +++
[pid 18704] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18704, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18706
./strace-static-x86_64: Process 18706 attached
[pid 18706] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18706] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18706] setpgid(0, 0)               = 0
[pid 18706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18706] write(3, "1000", 4)         = 4
[pid 18706] close(3)                    = 0
[pid 18706] write(1, "executing program\n", 18executing program
) = 18
[pid 18706] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18706] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18706] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18706] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18706] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18706] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18706] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18707 attached
 => {parent_tid=[18707]}, 88) = 18707
[pid 18706] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18706] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18706] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18707] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18707] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18707] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18707] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18706] <... futex resumed>)        = 0
[pid 18707] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18706] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18707] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18706] <... futex resumed>)        = 0
[pid 18707] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18706] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18707] <... futex resumed>)        = 0
[pid 18706] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18707] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18706] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18707] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18706] <... futex resumed>)        = 0
[pid 18707] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18706] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18707] <... futex resumed>)        = 0
[pid 18706] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18707] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18706] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18706] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18707] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18707] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18706] <... futex resumed>)        = 0
[pid 18707] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18706] exit_group(0 <unfinished ...>
[pid 18707] <... futex resumed>)        = ?
[pid 18706] <... exit_group resumed>)   = ?
[pid 18707] +++ exited with 0 +++
[pid 18706] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18706, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18708
./strace-static-x86_64: Process 18708 attached
[pid 18708] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18708] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18708] setpgid(0, 0)               = 0
[pid 18708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18708] write(3, "1000", 4)         = 4
[pid 18708] close(3)                    = 0
[pid 18708] write(1, "executing program\n", 18executing program
) = 18
[pid 18708] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18708] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18708] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18708] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18708] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18708] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18708] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18709 attached
 => {parent_tid=[18709]}, 88) = 18709
[pid 18708] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18708] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18708] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18709] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18709] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18709] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18709] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18708] <... futex resumed>)        = 0
[pid 18708] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18708] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18709] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18709] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18708] <... futex resumed>)        = 0
[pid 18708] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18708] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18709] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18709] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18708] <... futex resumed>)        = 0
[pid 18708] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18708] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18709] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18709] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18708] <... futex resumed>)        = 0
[pid 18708] exit_group(0 <unfinished ...>
[pid 18709] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18708] <... exit_group resumed>)   = ?
[pid 18709] <... futex resumed>)        = ?
[pid 18709] +++ exited with 0 +++
[pid 18708] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18708, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18710
./strace-static-x86_64: Process 18710 attached
[pid 18710] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18710] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18710] setpgid(0, 0)               = 0
[pid 18710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18710] write(3, "1000", 4)         = 4
[pid 18710] close(3)                    = 0
executing program
[pid 18710] write(1, "executing program\n", 18) = 18
[pid 18710] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18710] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18710] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18710] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18710] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18710] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18710] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18711 attached
 => {parent_tid=[18711]}, 88) = 18711
[pid 18710] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18710] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18710] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18711] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18711] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18711] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18711] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18710] <... futex resumed>)        = 0
[pid 18710] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18710] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18711] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18711] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18710] <... futex resumed>)        = 0
[pid 18710] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18710] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18711] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18711] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18710] <... futex resumed>)        = 0
[pid 18710] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18710] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18711] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18711] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18710] <... futex resumed>)        = 0
[pid 18710] exit_group(0)               = ?
[pid 18711] +++ exited with 0 +++
[pid 18710] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18710, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18712
./strace-static-x86_64: Process 18712 attached
[pid 18712] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18712] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18712] setpgid(0, 0)               = 0
[pid 18712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18712] write(3, "1000", 4)         = 4
[pid 18712] close(3executing program
)                    = 0
[pid 18712] write(1, "executing program\n", 18) = 18
[pid 18712] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18712] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18712] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18712] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18712] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18712] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18712] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18713 attached
 => {parent_tid=[18713]}, 88) = 18713
[pid 18712] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18712] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18712] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18713] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18713] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18713] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18713] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18712] <... futex resumed>)        = 0
[pid 18712] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18712] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18713] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18713] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18712] <... futex resumed>)        = 0
[pid 18712] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18712] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18713] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18713] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18712] <... futex resumed>)        = 0
[pid 18712] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18712] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18713] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18713] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18712] <... futex resumed>)        = 0
[pid 18712] exit_group(0)               = ?
[pid 18713] +++ exited with 0 +++
[pid 18712] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18712, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18714 attached
 <unfinished ...>
[pid 18714] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18714] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18714] setpgid(0, 0)               = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18714
[pid 18714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18714] write(3, "1000", 4)         = 4
[pid 18714] close(3)                    = 0
executing program
[pid 18714] write(1, "executing program\n", 18) = 18
[pid 18714] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18714] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18714] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18714] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18714] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18714] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18714] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18715]}, 88) = 18715
[pid 18714] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18714] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18714] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18715 attached
 <unfinished ...>
[pid 18715] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18715] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18715] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18715] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18714] <... futex resumed>)        = 0
[pid 18714] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18714] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18715] <... futex resumed>)        = 1
[pid 18715] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18715] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18714] <... futex resumed>)        = 0
[pid 18714] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18714] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18715] <... futex resumed>)        = 1
[pid 18715] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18715] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18714] <... futex resumed>)        = 0
[pid 18714] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18714] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18715] <... futex resumed>)        = 1
[pid 18715] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18715] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18714] <... futex resumed>)        = 0
[pid 18714] exit_group(0)               = ?
[pid 18715] <... futex resumed>)        = ?
[pid 18715] +++ exited with 0 +++
[pid 18714] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18714, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18716 attached
, child_tidptr=0x55557c828690) = 18716
[pid 18716] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18716] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18716] setpgid(0, 0)               = 0
[pid 18716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18716] write(3, "1000", 4)         = 4
[pid 18716] close(3)                    = 0
[pid 18716] write(1, "executing program\n", 18executing program
) = 18
[pid 18716] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18716] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18716] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18716] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18716] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18716] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18716] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18717 attached
 => {parent_tid=[18717]}, 88) = 18717
[pid 18716] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18716] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18716] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18717] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18717] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18717] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18717] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18716] <... futex resumed>)        = 0
[pid 18716] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18716] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18717] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18717] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18716] <... futex resumed>)        = 0
[pid 18716] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18716] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18717] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18717] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18716] <... futex resumed>)        = 0
[pid 18716] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18716] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18717] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18717] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18717] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18716] <... futex resumed>)        = 0
[pid 18716] exit_group(0)               = ?
[pid 18717] <... futex resumed>)        = ?
[pid 18717] +++ exited with 0 +++
[pid 18716] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18716, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18718
./strace-static-x86_64: Process 18718 attached
[pid 18718] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18718] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18718] setpgid(0, 0)               = 0
[pid 18718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18718] write(3, "1000", 4)         = 4
[pid 18718] close(3executing program
)                    = 0
[pid 18718] write(1, "executing program\n", 18) = 18
[pid 18718] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18718] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18718] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18718] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18718] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18718] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18718] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18719]}, 88) = 18719
[pid 18718] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18718] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18718] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18719 attached
 <unfinished ...>
[pid 18719] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18719] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18719] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18719] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18718] <... futex resumed>)        = 0
[pid 18718] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18718] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18719] <... futex resumed>)        = 1
[pid 18719] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18719] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18718] <... futex resumed>)        = 0
[pid 18718] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18718] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18719] <... futex resumed>)        = 1
[pid 18719] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18719] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18718] <... futex resumed>)        = 0
[pid 18718] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18718] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18719] <... futex resumed>)        = 1
[pid 18719] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18719] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18718] <... futex resumed>)        = 0
[pid 18718] exit_group(0)               = ?
[pid 18719] <... futex resumed>)        = ?
[pid 18719] +++ exited with 0 +++
[pid 18718] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18718, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18720
./strace-static-x86_64: Process 18720 attached
[pid 18720] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18720] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18720] setpgid(0, 0)               = 0
[pid 18720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18720] write(3, "1000", 4)         = 4
[pid 18720] close(3)                    = 0
executing program
[pid 18720] write(1, "executing program\n", 18) = 18
[pid 18720] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18720] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18720] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18720] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18720] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18720] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18720] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18721]}, 88) = 18721
./strace-static-x86_64: Process 18721 attached
[pid 18721] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18721] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18721] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18720] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18720] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18721] <... futex resumed>)        = 0
[pid 18721] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18720] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18721] <... 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 18721] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18720] <... futex resumed>)        = 0
[pid 18720] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18720] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18721] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18721] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18720] <... futex resumed>)        = 0
[pid 18720] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18720] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18721] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18721] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18720] <... futex resumed>)        = 0
[pid 18720] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18720] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18721] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18721] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18720] <... futex resumed>)        = 0
[pid 18720] exit_group(0)               = ?
[pid 18721] +++ exited with 0 +++
[pid 18720] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18720, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18722 attached
 <unfinished ...>
[pid 18722] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18722
[pid 18722] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18722] setpgid(0, 0)               = 0
[pid 18722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18722] write(3, "1000", 4)         = 4
[pid 18722] close(3executing program
)                    = 0
[pid 18722] write(1, "executing program\n", 18) = 18
[pid 18722] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18722] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18722] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18722] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18722] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18722] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18722] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18723]}, 88) = 18723
./strace-static-x86_64: Process 18723 attached
[pid 18722] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18722] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18722] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18723] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18723] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18723] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18723] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18722] <... futex resumed>)        = 0
[pid 18722] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18722] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18723] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18723] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18722] <... futex resumed>)        = 0
[pid 18722] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18722] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18723] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18723] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18722] <... futex resumed>)        = 0
[pid 18722] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18722] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18723] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18723] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18722] <... futex resumed>)        = 0
[pid 18722] exit_group(0)               = ?
[pid 18723] +++ exited with 0 +++
[pid 18722] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18722, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18724
./strace-static-x86_64: Process 18724 attached
[pid 18724] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18724] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18724] setpgid(0, 0)               = 0
[pid 18724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18724] write(3, "1000", 4)         = 4
[pid 18724] close(3)                    = 0
executing program
[pid 18724] write(1, "executing program\n", 18) = 18
[pid 18724] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18724] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18724] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18724] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18724] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18724] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18724] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18725 attached
 => {parent_tid=[18725]}, 88) = 18725
[pid 18724] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18724] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18724] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18725] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18725] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18725] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18725] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18724] <... futex resumed>)        = 0
[pid 18725] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18724] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18725] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18724] <... futex resumed>)        = 0
[pid 18725] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18724] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18725] <... futex resumed>)        = 0
[pid 18724] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18725] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18724] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18725] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18724] <... futex resumed>)        = 0
[pid 18725] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18724] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18725] <... futex resumed>)        = 0
[pid 18724] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18725] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18724] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18725] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18724] <... futex resumed>)        = 0
[pid 18725] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18724] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18725] <... futex resumed>)        = 0
[pid 18724] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18725] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18724] exit_group(0 <unfinished ...>
[pid 18725] <... futex resumed>)        = ?
[pid 18724] <... exit_group resumed>)   = ?
[pid 18725] +++ exited with 0 +++
[pid 18724] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18724, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18726 attached
, child_tidptr=0x55557c828690) = 18726
[pid 18726] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18726] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18726] setpgid(0, 0)               = 0
[pid 18726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18726] write(3, "1000", 4)         = 4
[pid 18726] close(3executing program
)                    = 0
[pid 18726] write(1, "executing program\n", 18) = 18
[pid 18726] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18726] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18726] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18726] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18726] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18726] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18726] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18727]}, 88) = 18727
[pid 18726] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18726] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18726] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18727 attached
 <unfinished ...>
[pid 18727] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18727] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18727] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18727] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18726] <... futex resumed>)        = 0
[pid 18726] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18726] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18727] <... futex resumed>)        = 1
[pid 18727] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18727] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18726] <... futex resumed>)        = 0
[pid 18726] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18726] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18727] <... futex resumed>)        = 1
[pid 18727] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18727] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18726] <... futex resumed>)        = 0
[pid 18726] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18726] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18727] <... futex resumed>)        = 1
[pid 18727] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18727] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18726] <... futex resumed>)        = 0
[pid 18726] exit_group(0)               = ?
[pid 18727] <... futex resumed>)        = ?
[pid 18727] +++ exited with 0 +++
[pid 18726] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18726, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18728 attached
, child_tidptr=0x55557c828690) = 18728
[pid 18728] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18728] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18728] setpgid(0, 0)               = 0
[pid 18728] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18728] write(3, "1000", 4)         = 4
executing program
[pid 18728] close(3)                    = 0
[pid 18728] write(1, "executing program\n", 18) = 18
[pid 18728] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18728] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18728] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18728] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18728] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18728] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18728] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18729 attached
 => {parent_tid=[18729]}, 88) = 18729
[pid 18729] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18729] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18729] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18728] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18728] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18729] <... futex resumed>)        = 0
[pid 18729] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18728] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18729] <... 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 18729] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18728] <... futex resumed>)        = 0
[pid 18728] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18728] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18729] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18729] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18729] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18728] <... futex resumed>)        = 0
[pid 18728] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18728] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18729] <... futex resumed>)        = 0
[pid 18729] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18729] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18729] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18728] <... futex resumed>)        = 0
[pid 18728] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18728] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18729] <... futex resumed>)        = 0
[pid 18729] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18729] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18728] <... futex resumed>)        = 0
[pid 18728] exit_group(0)               = ?
[pid 18729] +++ exited with 0 +++
[pid 18728] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18728, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18730
./strace-static-x86_64: Process 18730 attached
[pid 18730] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18730] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18730] setpgid(0, 0)               = 0
[pid 18730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18730] write(3, "1000", 4)         = 4
[pid 18730] close(3)                    = 0
[pid 18730] write(1, "executing program\n", 18executing program
) = 18
[pid 18730] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18730] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18730] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18730] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18730] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18730] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18730] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18731]}, 88) = 18731
./strace-static-x86_64: Process 18731 attached
[pid 18731] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18730] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18731] <... set_robust_list resumed>) = 0
[pid 18730] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18731] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18730] <... futex resumed>)        = 0
[pid 18731] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18730] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18731] <... 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 18731] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18730] <... futex resumed>)        = 0
[pid 18730] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18730] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18731] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18731] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18730] <... futex resumed>)        = 0
[pid 18730] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18730] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18731] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18731] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18730] <... futex resumed>)        = 0
[pid 18730] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18730] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18731] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18731] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18731] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18730] <... futex resumed>)        = 0
[pid 18730] exit_group(0)               = ?
[pid 18731] <... futex resumed>)        = ?
[pid 18731] +++ exited with 0 +++
[pid 18730] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18730, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18732 attached
, child_tidptr=0x55557c828690) = 18732
[pid 18732] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18732] setpgid(0, 0)               = 0
[pid 18732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18732] write(3, "1000", 4)         = 4
[pid 18732] close(3)                    = 0
[pid 18732] write(1, "executing program\n", 18executing program
) = 18
[pid 18732] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18732] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18732] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18732] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18732] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18732] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18732] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18733 attached
 => {parent_tid=[18733]}, 88) = 18733
[pid 18732] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18732] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18732] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18733] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18733] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18733] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18733] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18732] <... futex resumed>)        = 0
[pid 18733] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18732] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18733] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18732] <... futex resumed>)        = 0
[pid 18733] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18732] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18733] <... futex resumed>)        = 0
[pid 18732] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18733] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18732] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18733] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18732] <... futex resumed>)        = 0
[pid 18733] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18732] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18733] <... futex resumed>)        = 0
[pid 18732] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18733] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18732] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18733] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18732] <... futex resumed>)        = 0
[pid 18733] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18732] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18733] <... futex resumed>)        = 0
[pid 18732] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18733] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18732] exit_group(0 <unfinished ...>
[pid 18733] <... futex resumed>)        = ?
[pid 18732] <... exit_group resumed>)   = ?
[pid 18733] +++ exited with 0 +++
[pid 18732] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18732, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18734
./strace-static-x86_64: Process 18734 attached
[pid 18734] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18734] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18734] setpgid(0, 0)               = 0
[pid 18734] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18734] write(3, "1000", 4)         = 4
[pid 18734] close(3)                    = 0
executing program
[pid 18734] write(1, "executing program\n", 18) = 18
[pid 18734] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18734] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18734] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18734] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18734] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18734] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18734] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18735]}, 88) = 18735
[pid 18734] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18734] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18734] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18735 attached
 <unfinished ...>
[pid 18735] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18735] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18735] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18735] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18734] <... futex resumed>)        = 0
[pid 18735] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18734] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18735] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18734] <... futex resumed>)        = 0
[pid 18735] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18734] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18735] <... futex resumed>)        = 0
[pid 18734] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18735] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18734] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18735] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18734] <... futex resumed>)        = 0
[pid 18735] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18734] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18735] <... futex resumed>)        = 0
[pid 18734] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18735] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18734] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18735] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18734] <... futex resumed>)        = 0
[pid 18735] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18734] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18735] <... futex resumed>)        = 0
[pid 18734] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18735] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18734] exit_group(0 <unfinished ...>
[pid 18735] <... futex resumed>)        = ?
[pid 18734] <... exit_group resumed>)   = ?
[pid 18735] +++ exited with 0 +++
[pid 18734] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18734, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18736
./strace-static-x86_64: Process 18736 attached
[pid 18736] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18736] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18736] setpgid(0, 0)               = 0
[pid 18736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18736] write(3, "1000", 4)         = 4
[pid 18736] close(3)                    = 0
[pid 18736] write(1, "executing program\n", 18executing program
) = 18
[pid 18736] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18736] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18736] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18736] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18736] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18736] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18736] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18737 attached
 <unfinished ...>
[pid 18737] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18736] <... clone3 resumed> => {parent_tid=[18737]}, 88) = 18737
[pid 18736] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18737] <... set_robust_list resumed>) = 0
[pid 18737] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18736] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18737] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18736] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18737] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18736] <... futex resumed>)        = 0
[pid 18736] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18737] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18737] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18736] <... futex resumed>)        = 0
[pid 18736] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18736] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18737] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18737] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18736] <... futex resumed>)        = 0
[pid 18736] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18736] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18737] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18737] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18736] <... futex resumed>)        = 0
[pid 18736] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18736] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18737] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18737] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18736] <... futex resumed>)        = 0
[pid 18736] exit_group(0)               = ?
[pid 18737] +++ exited with 0 +++
[pid 18736] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18736, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18738 attached
 <unfinished ...>
[pid 18738] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18738
[pid 18738] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18738] setpgid(0, 0)               = 0
[pid 18738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18738] write(3, "1000", 4)         = 4
[pid 18738] close(3)                    = 0
executing program
[pid 18738] write(1, "executing program\n", 18) = 18
[pid 18738] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18738] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18738] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18738] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18738] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18738] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18738] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18739 attached
 <unfinished ...>
[pid 18739] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18739] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18739] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18738] <... clone3 resumed> => {parent_tid=[18739]}, 88) = 18739
[pid 18738] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18738] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18739] <... futex resumed>)        = 0
[pid 18739] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18738] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18739] <... 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 18739] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18738] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18739] <... futex resumed>)        = 0
[pid 18738] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18739] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18738] <... futex resumed>)        = 0
[pid 18739] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18738] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18739] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18738] <... futex resumed>)        = 0
[pid 18738] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18739] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18738] <... futex resumed>)        = 0
[pid 18738] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18739] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18739] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18738] <... futex resumed>)        = 0
[pid 18738] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18738] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18739] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18739] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18738] <... futex resumed>)        = 0
[pid 18738] exit_group(0)               = ?
[pid 18739] +++ exited with 0 +++
[pid 18738] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18738, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18740 attached
, child_tidptr=0x55557c828690) = 18740
[pid 18740] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18740] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18740] setpgid(0, 0)               = 0
[pid 18740] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18740] write(3, "1000", 4)         = 4
[pid 18740] close(3)                    = 0
executing program
[pid 18740] write(1, "executing program\n", 18) = 18
[pid 18740] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18740] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18740] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18740] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18740] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18740] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18740] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18741]}, 88) = 18741
[pid 18740] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18740] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18740] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18741 attached
 <unfinished ...>
[pid 18741] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18741] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18741] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18741] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18740] <... futex resumed>)        = 0
[pid 18740] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18740] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18741] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18741] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18740] <... futex resumed>)        = 0
[pid 18740] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18740] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18741] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18741] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18740] <... futex resumed>)        = 0
[pid 18740] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18740] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18741] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18741] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18741] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18740] <... futex resumed>)        = 0
[pid 18740] exit_group(0)               = ?
[pid 18741] <... futex resumed>)        = ?
[pid 18741] +++ exited with 0 +++
[pid 18740] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18740, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18742
./strace-static-x86_64: Process 18742 attached
[pid 18742] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18742] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18742] setpgid(0, 0)               = 0
[pid 18742] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18742] write(3, "1000", 4)         = 4
[pid 18742] close(3)                    = 0
[pid 18742] write(1, "executing program\n", 18executing program
) = 18
[pid 18742] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18742] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18742] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18742] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18742] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18742] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18742] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18743 attached
 => {parent_tid=[18743]}, 88) = 18743
[pid 18743] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18742] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18743] <... set_robust_list resumed>) = 0
[pid 18742] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18743] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18742] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18743] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18742] <... futex resumed>)        = 0
[pid 18742] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18743] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18743] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18742] <... futex resumed>)        = 0
[pid 18742] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18742] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18743] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18743] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18742] <... futex resumed>)        = 0
[pid 18742] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18742] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18743] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18743] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18742] <... futex resumed>)        = 0
[pid 18742] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18742] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18743] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18743] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18742] <... futex resumed>)        = 0
[pid 18742] exit_group(0)               = ?
[pid 18743] +++ exited with 0 +++
[pid 18742] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18742, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18744
./strace-static-x86_64: Process 18744 attached
[pid 18744] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18744] prctl(PR_SET_PDEATHSIG, SIGKILLexecuting program
) = 0
[pid 18744] setpgid(0, 0)               = 0
[pid 18744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18744] write(3, "1000", 4)         = 4
[pid 18744] close(3)                    = 0
[pid 18744] write(1, "executing program\n", 18) = 18
[pid 18744] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18744] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18744] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18744] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18744] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18744] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18744] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18745 attached
 => {parent_tid=[18745]}, 88) = 18745
[pid 18745] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18744] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18745] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18744] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18745] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18744] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18745] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18744] <... futex resumed>)        = 0
[pid 18745] <... 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 18744] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18745] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18744] <... futex resumed>)        = 0
[pid 18745] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18744] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18745] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18744] <... futex resumed>)        = 0
[pid 18745] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18744] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18745] <... futex resumed>)        = 0
[pid 18744] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18745] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18744] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18745] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18744] <... futex resumed>)        = 0
[pid 18745] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18744] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18745] <... futex resumed>)        = 0
[pid 18744] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18745] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18744] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18745] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18744] <... futex resumed>)        = 0
[pid 18745] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18744] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18745] <... futex resumed>)        = 0
[pid 18744] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18745] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18744] exit_group(0 <unfinished ...>
[pid 18745] <... futex resumed>)        = ?
[pid 18744] <... exit_group resumed>)   = ?
[pid 18745] +++ exited with 0 +++
[pid 18744] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18744, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18746 attached
, child_tidptr=0x55557c828690) = 18746
[pid 18746] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18746] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18746] setpgid(0, 0)               = 0
[pid 18746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18746] write(3, "1000", 4)         = 4
executing program
[pid 18746] close(3)                    = 0
[pid 18746] write(1, "executing program\n", 18) = 18
[pid 18746] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18746] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18746] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18746] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18746] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18746] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18746] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18747 attached
 => {parent_tid=[18747]}, 88) = 18747
[pid 18747] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18746] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18747] <... set_robust_list resumed>) = 0
[pid 18746] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18747] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18746] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18747] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18746] <... futex resumed>)        = 0
[pid 18747] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18746] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18747] <... 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 18747] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18746] <... futex resumed>)        = 0
[pid 18747] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18746] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18747] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18746] <... futex resumed>)        = 0
[pid 18747] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18746] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18747] <... futex resumed>)        = 0
[pid 18746] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18747] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18746] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18747] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18746] <... futex resumed>)        = 0
[pid 18747] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18746] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18747] <... futex resumed>)        = 0
[pid 18746] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18747] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18746] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18747] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18746] <... futex resumed>)        = 0
[pid 18747] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18746] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18747] <... futex resumed>)        = 0
[pid 18746] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18747] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18746] exit_group(0 <unfinished ...>
[pid 18747] <... futex resumed>)        = ?
[pid 18746] <... exit_group resumed>)   = ?
[pid 18747] +++ exited with 0 +++
[pid 18746] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18746, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18748 attached
 <unfinished ...>
[pid 18748] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18748
[pid 18748] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18748] setpgid(0, 0)               = 0
[pid 18748] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18748] write(3, "1000", 4)         = 4
[pid 18748] close(3)                    = 0
[pid 18748] write(1, "executing program\n", 18executing program
) = 18
[pid 18748] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18748] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18748] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18748] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18748] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18748] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18748] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18749 attached
 => {parent_tid=[18749]}, 88) = 18749
[pid 18748] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18748] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18748] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18749] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18749] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18749] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18749] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18748] <... futex resumed>)        = 0
[pid 18749] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18748] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18749] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18748] <... futex resumed>)        = 0
[pid 18749] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18748] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18749] <... futex resumed>)        = 0
[pid 18748] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18749] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18748] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18749] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18748] <... futex resumed>)        = 0
[pid 18749] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18748] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18749] <... futex resumed>)        = 0
[pid 18748] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18749] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18748] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18749] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18748] <... futex resumed>)        = 0
[pid 18749] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18748] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18749] <... futex resumed>)        = 0
[pid 18748] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18749] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18748] exit_group(0 <unfinished ...>
[pid 18749] <... futex resumed>)        = ?
[pid 18748] <... exit_group resumed>)   = ?
[pid 18749] +++ exited with 0 +++
[pid 18748] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18748, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18750
./strace-static-x86_64: Process 18750 attached
[pid 18750] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18750] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18750] setpgid(0, 0)               = 0
[pid 18750] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18750] write(3, "1000", 4)         = 4
[pid 18750] close(3)                    = 0
executing program
[pid 18750] write(1, "executing program\n", 18) = 18
[pid 18750] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18750] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18750] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18750] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18750] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18750] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18750] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18751]}, 88) = 18751
./strace-static-x86_64: Process 18751 attached
[pid 18751] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18750] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18751] <... set_robust_list resumed>) = 0
[pid 18750] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18751] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18750] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18751] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18750] <... futex resumed>)        = 0
[pid 18751] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18750] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18751] <... 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 18751] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18750] <... futex resumed>)        = 0
[pid 18751] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18750] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18751] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18750] <... futex resumed>)        = 0
[pid 18751] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18750] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18751] <... futex resumed>)        = 0
[pid 18750] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18751] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18750] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18751] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18750] <... futex resumed>)        = 0
[pid 18751] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18750] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18751] <... futex resumed>)        = 0
[pid 18750] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18751] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18750] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18751] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18750] <... futex resumed>)        = 0
[pid 18751] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18750] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18751] <... futex resumed>)        = 0
[pid 18750] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18751] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18750] exit_group(0)               = ?
[pid 18751] <... futex resumed>)        = ?
[pid 18751] +++ exited with 0 +++
[pid 18750] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18750, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18752
./strace-static-x86_64: Process 18752 attached
[pid 18752] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18752] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18752] setpgid(0, 0)               = 0
[pid 18752] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18752] write(3, "1000", 4)         = 4
[pid 18752] close(3)                    = 0
[pid 18752] write(1, "executing program\n", 18executing program
) = 18
[pid 18752] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18752] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18752] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18752] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18752] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18752] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18752] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18753 attached
 => {parent_tid=[18753]}, 88) = 18753
[pid 18753] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18752] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18752] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18752] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18753] <... set_robust_list resumed>) = 0
[pid 18753] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18753] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18753] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18752] <... futex resumed>)        = 0
[pid 18753] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18752] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18753] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18752] <... futex resumed>)        = 0
[pid 18753] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18752] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18753] <... futex resumed>)        = 0
[pid 18752] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18753] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18752] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18753] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18752] <... futex resumed>)        = 0
[pid 18753] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18752] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18753] <... futex resumed>)        = 0
[pid 18752] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18753] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18752] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18753] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18752] <... futex resumed>)        = 0
[pid 18753] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18752] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18753] <... futex resumed>)        = 0
[pid 18752] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18753] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18752] exit_group(0 <unfinished ...>
[pid 18753] <... futex resumed>)        = ?
[pid 18752] <... exit_group resumed>)   = ?
[pid 18753] +++ exited with 0 +++
[pid 18752] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18752, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18754 attached
, child_tidptr=0x55557c828690) = 18754
[pid 18754] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18754] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18754] setpgid(0, 0)               = 0
[pid 18754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18754] write(3, "1000", 4)         = 4
[pid 18754] close(3executing program
)                    = 0
[pid 18754] write(1, "executing program\n", 18) = 18
[pid 18754] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18754] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18754] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18754] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18754] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18754] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18754] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18755]}, 88) = 18755
./strace-static-x86_64: Process 18755 attached
[pid 18755] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18755] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18755] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18754] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18754] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18755] <... futex resumed>)        = 0
[pid 18754] <... futex resumed>)        = 1
[pid 18755] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18754] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18755] <... 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 18755] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18754] <... futex resumed>)        = 0
[pid 18755] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18754] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18755] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18754] <... futex resumed>)        = 0
[pid 18755] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18754] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18755] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18755] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18754] <... futex resumed>)        = 0
[pid 18755] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18754] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18755] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18754] <... futex resumed>)        = 0
[pid 18755] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18754] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18755] <... futex resumed>)        = 0
[pid 18754] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18755] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18754] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18755] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18754] <... futex resumed>)        = 0
[pid 18755] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18754] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18755] <... futex resumed>)        = 0
[pid 18754] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18755] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18754] exit_group(0 <unfinished ...>
[pid 18755] <... futex resumed>)        = ?
[pid 18754] <... exit_group resumed>)   = ?
[pid 18755] +++ exited with 0 +++
[pid 18754] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18754, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18756 attached
 <unfinished ...>
[pid 18756] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18756] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18756
[pid 18756] <... prctl resumed>)        = 0
[pid 18756] setpgid(0, 0)               = 0
[pid 18756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18756] write(3, "1000", 4)         = 4
executing program
[pid 18756] close(3)                    = 0
[pid 18756] write(1, "executing program\n", 18) = 18
[pid 18756] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18756] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18756] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18756] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18756] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18756] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18756] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18757]}, 88) = 18757
./strace-static-x86_64: Process 18757 attached
[pid 18756] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18756] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18756] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18757] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18757] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18757] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18757] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18756] <... futex resumed>)        = 0
[pid 18757] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18756] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18757] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18756] <... futex resumed>)        = 0
[pid 18757] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18756] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18757] <... futex resumed>)        = 0
[pid 18756] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18757] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18756] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18757] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18756] <... futex resumed>)        = 0
[pid 18757] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18756] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18757] <... futex resumed>)        = 0
[pid 18756] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18757] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18756] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18757] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18756] <... futex resumed>)        = 0
[pid 18757] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18756] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18757] <... futex resumed>)        = 0
[pid 18756] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18757] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18756] exit_group(0 <unfinished ...>
[pid 18757] <... futex resumed>)        = ?
[pid 18756] <... exit_group resumed>)   = ?
[pid 18757] +++ exited with 0 +++
[pid 18756] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18756, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18758
./strace-static-x86_64: Process 18758 attached
[pid 18758] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18758] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18758] setpgid(0, 0)               = 0
[pid 18758] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18758] write(3, "1000", 4)         = 4
[pid 18758] close(3)                    = 0
[pid 18758] write(1, "executing program\n", 18executing program
) = 18
[pid 18758] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18758] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18758] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18758] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18758] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18758] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18758] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18759 attached
 => {parent_tid=[18759]}, 88) = 18759
[pid 18758] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18758] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18758] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18759] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18759] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18759] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18759] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18758] <... futex resumed>)        = 0
[pid 18759] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18758] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18759] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18758] <... futex resumed>)        = 0
[pid 18759] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18758] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18759] <... futex resumed>)        = 0
[pid 18758] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18759] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18758] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18759] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18758] <... futex resumed>)        = 0
[pid 18759] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18758] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18759] <... futex resumed>)        = 0
[pid 18758] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18759] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18758] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18759] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18758] <... futex resumed>)        = 0
[pid 18759] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18758] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18759] <... futex resumed>)        = 0
[pid 18758] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18759] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18758] exit_group(0 <unfinished ...>
[pid 18759] <... futex resumed>)        = ?
[pid 18758] <... exit_group resumed>)   = ?
[pid 18759] +++ exited with 0 +++
[pid 18758] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18758, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18760
./strace-static-x86_64: Process 18760 attached
[pid 18760] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18760] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18760] setpgid(0, 0)               = 0
[pid 18760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18760] write(3, "1000", 4)         = 4
[pid 18760] close(3)                    = 0
[pid 18760] write(1, "executing program\n", 18executing program
) = 18
[pid 18760] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18760] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18760] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18760] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18760] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18760] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18760] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18761]}, 88) = 18761
[pid 18760] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18760] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18760] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18761 attached
 <unfinished ...>
[pid 18761] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18761] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18761] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18761] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18760] <... futex resumed>)        = 0
[pid 18760] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18760] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18761] <... futex resumed>)        = 1
[pid 18761] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18761] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18760] <... futex resumed>)        = 0
[pid 18760] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18760] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18761] <... futex resumed>)        = 1
[pid 18761] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18761] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18760] <... futex resumed>)        = 0
[pid 18760] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18760] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18761] <... futex resumed>)        = 1
[pid 18761] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18761] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18760] <... futex resumed>)        = 0
[pid 18760] exit_group(0)               = ?
[pid 18761] <... futex resumed>)        = ?
[pid 18761] +++ exited with 0 +++
[pid 18760] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18760, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18762
./strace-static-x86_64: Process 18762 attached
[pid 18762] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18762] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18762] setpgid(0, 0)               = 0
[pid 18762] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18762] write(3, "1000", 4)         = 4
[pid 18762] close(3)                    = 0
[pid 18762] write(1, "executing program\n", 18executing program
) = 18
[pid 18762] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18762] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18762] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18762] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18762] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18762] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18762] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18763]}, 88) = 18763
[pid 18762] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18762] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18762] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18763 attached
 <unfinished ...>
[pid 18763] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18763] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18763] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18763] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18762] <... futex resumed>)        = 0
[pid 18762] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18762] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18763] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18763] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18762] <... futex resumed>)        = 0
[pid 18762] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18762] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18763] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18763] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18762] <... futex resumed>)        = 0
[pid 18762] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18762] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18763] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18763] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18762] <... futex resumed>)        = 0
[pid 18762] exit_group(0)               = ?
[pid 18763] +++ exited with 0 +++
[pid 18762] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18762, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18764
./strace-static-x86_64: Process 18764 attached
[pid 18764] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18764] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18764] setpgid(0, 0)               = 0
[pid 18764] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18764] write(3, "1000", 4)         = 4
[pid 18764] close(3executing program
)                    = 0
[pid 18764] write(1, "executing program\n", 18) = 18
[pid 18764] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18764] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18764] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18764] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18764] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18764] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18764] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18765]}, 88) = 18765
./strace-static-x86_64: Process 18765 attached
[pid 18764] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18764] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18764] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18765] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18765] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18765] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18765] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18765] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18764] <... futex resumed>)        = 0
[pid 18764] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18765] <... futex resumed>)        = 0
[pid 18764] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18765] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18765] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18765] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18764] <... futex resumed>)        = 0
[pid 18764] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18765] <... futex resumed>)        = 0
[pid 18765] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18764] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18765] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18764] <... futex resumed>)        = 0
[pid 18764] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18765] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18764] <... futex resumed>)        = 0
[pid 18764] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18765] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18765] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18764] <... futex resumed>)        = 0
[pid 18764] exit_group(0 <unfinished ...>
[pid 18765] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18764] <... exit_group resumed>)   = ?
[pid 18765] <... futex resumed>)        = ?
[pid 18765] +++ exited with 0 +++
[pid 18764] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18764, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18766
./strace-static-x86_64: Process 18766 attached
[pid 18766] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18766] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18766] setpgid(0, 0)               = 0
[pid 18766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18766] write(3, "1000", 4)         = 4
[pid 18766] close(3executing program
)                    = 0
[pid 18766] write(1, "executing program\n", 18) = 18
[pid 18766] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18766] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18766] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18766] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18766] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18766] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18766] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18767]}, 88) = 18767
[pid 18766] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18766] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18766] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18767 attached
 <unfinished ...>
[pid 18767] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18767] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18767] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18767] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18766] <... futex resumed>)        = 0
[pid 18766] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18766] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18767] <... futex resumed>)        = 1
[pid 18767] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18767] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18766] <... futex resumed>)        = 0
[pid 18766] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18766] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18767] <... futex resumed>)        = 1
[pid 18767] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18767] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18766] <... futex resumed>)        = 0
[pid 18766] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18766] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18767] <... futex resumed>)        = 1
[pid 18767] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18767] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18766] <... futex resumed>)        = 0
[pid 18766] exit_group(0)               = ?
[pid 18767] <... futex resumed>)        = ?
[pid 18767] +++ exited with 0 +++
[pid 18766] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18766, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18768
./strace-static-x86_64: Process 18768 attached
[pid 18768] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18768] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18768] setpgid(0, 0)               = 0
[pid 18768] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18768] write(3, "1000", 4executing program
)         = 4
[pid 18768] close(3)                    = 0
[pid 18768] write(1, "executing program\n", 18) = 18
[pid 18768] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18768] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18768] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18768] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18768] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18768] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18768] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18769]}, 88) = 18769
[pid 18768] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18768] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18768] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18769 attached
 <unfinished ...>
[pid 18769] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18769] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18769] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18769] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18768] <... futex resumed>)        = 0
[pid 18768] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18768] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18769] <... futex resumed>)        = 1
[pid 18769] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18769] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18768] <... futex resumed>)        = 0
[pid 18768] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18768] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18769] <... futex resumed>)        = 1
[pid 18769] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18769] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18768] <... futex resumed>)        = 0
[pid 18768] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18768] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18769] <... futex resumed>)        = 1
[pid 18769] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18769] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18768] <... futex resumed>)        = 0
[pid 18769] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18768] exit_group(0 <unfinished ...>
[pid 18769] <... futex resumed>)        = ?
[pid 18768] <... exit_group resumed>)   = ?
[pid 18769] +++ exited with 0 +++
[pid 18768] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18768, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18770 attached
, child_tidptr=0x55557c828690) = 18770
[pid 18770] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18770] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18770] setpgid(0, 0)               = 0
[pid 18770] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18770] write(3, "1000", 4)         = 4
[pid 18770] close(3)                    = 0
executing program
[pid 18770] write(1, "executing program\n", 18) = 18
[pid 18770] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18770] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18770] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18770] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18770] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18770] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18770] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18771 attached
 => {parent_tid=[18771]}, 88) = 18771
[pid 18770] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18770] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18770] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18771] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18771] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18771] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18771] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18770] <... futex resumed>)        = 0
[pid 18770] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18770] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18771] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18771] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18770] <... futex resumed>)        = 0
[pid 18770] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18770] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18771] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18771] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18770] <... futex resumed>)        = 0
[pid 18770] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18770] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18771] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18771] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18770] <... futex resumed>)        = 0
[pid 18770] exit_group(0)               = ?
[pid 18771] +++ exited with 0 +++
[pid 18770] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18770, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18772
./strace-static-x86_64: Process 18772 attached
[pid 18772] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18772] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18772] setpgid(0, 0)               = 0
[pid 18772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18772] write(3, "1000", 4)         = 4
[pid 18772] close(3)                    = 0
[pid 18772] write(1, "executing program\n", 18executing program
) = 18
[pid 18772] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18772] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18772] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18772] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18772] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18772] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18772] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18773 attached
 => {parent_tid=[18773]}, 88) = 18773
[pid 18773] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18773] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18773] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18772] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18772] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18773] <... futex resumed>)        = 0
[pid 18773] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18773] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18773] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18772] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 18772] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18772] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18773] <... futex resumed>)        = 0
[pid 18773] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18773] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18772] <... futex resumed>)        = 0
[pid 18772] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18772] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18773] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18773] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18772] <... futex resumed>)        = 0
[pid 18772] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18772] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18773] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18773] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18772] <... futex resumed>)        = 0
[pid 18772] exit_group(0)               = ?
[pid 18773] +++ exited with 0 +++
[pid 18772] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18772, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18774
./strace-static-x86_64: Process 18774 attached
[pid 18774] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18774] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18774] setpgid(0, 0)               = 0
[pid 18774] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18774] write(3, "1000", 4)         = 4
[pid 18774] close(3)                    = 0
[pid 18774] write(1, "executing program\n", 18executing program
) = 18
[pid 18774] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18774] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18774] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18774] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18774] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18774] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18774] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18775 attached
 => {parent_tid=[18775]}, 88) = 18775
[pid 18775] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18775] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18775] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18774] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18774] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18775] <... futex resumed>)        = 0
[pid 18775] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18774] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18775] <... 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 18775] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18774] <... futex resumed>)        = 0
[pid 18774] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18774] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18775] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18775] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18774] <... futex resumed>)        = 0
[pid 18774] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18774] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18775] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18775] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18774] <... futex resumed>)        = 0
[pid 18774] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18774] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18775] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18775] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18774] <... futex resumed>)        = 0
[pid 18774] exit_group(0)               = ?
[pid 18775] +++ exited with 0 +++
[pid 18774] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18774, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18776
./strace-static-x86_64: Process 18776 attached
[pid 18776] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18776] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18776] setpgid(0, 0)               = 0
[pid 18776] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18776] write(3, "1000", 4)         = 4
executing program
[pid 18776] close(3)                    = 0
[pid 18776] write(1, "executing program\n", 18) = 18
[pid 18776] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18776] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18776] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18776] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18776] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18776] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18776] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18777 attached
 => {parent_tid=[18777]}, 88) = 18777
[pid 18777] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18776] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18777] <... set_robust_list resumed>) = 0
[pid 18777] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18776] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18777] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18776] <... futex resumed>)        = 0
[pid 18777] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18776] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18777] <... 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 18777] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18776] <... futex resumed>)        = 0
[pid 18776] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18776] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18777] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18777] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18776] <... futex resumed>)        = 0
[pid 18776] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18776] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18777] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18777] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18776] <... futex resumed>)        = 0
[pid 18776] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18776] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18777] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18777] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18776] <... futex resumed>)        = 0
[pid 18776] exit_group(0)               = ?
[pid 18777] +++ exited with 0 +++
[pid 18776] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18776, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18778
./strace-static-x86_64: Process 18778 attached
[pid 18778] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18778] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18778] setpgid(0, 0)               = 0
[pid 18778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18778] write(3, "1000", 4)         = 4
[pid 18778] close(3)                    = 0
executing program
[pid 18778] write(1, "executing program\n", 18) = 18
[pid 18778] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18778] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18778] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18778] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18778] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18778] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18778] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18779 attached
 => {parent_tid=[18779]}, 88) = 18779
[pid 18778] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18778] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18778] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18779] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18779] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18779] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18779] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18778] <... futex resumed>)        = 0
[pid 18779] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18778] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18779] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18778] <... futex resumed>)        = 0
[pid 18779] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18778] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18779] <... futex resumed>)        = 0
[pid 18778] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18779] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18778] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18779] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18778] <... futex resumed>)        = 0
[pid 18779] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18778] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18779] <... futex resumed>)        = 0
[pid 18778] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18779] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18778] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18779] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18778] <... futex resumed>)        = 0
[pid 18779] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18778] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18779] <... futex resumed>)        = 0
[pid 18778] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18779] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18778] exit_group(0 <unfinished ...>
[pid 18779] <... futex resumed>)        = ?
[pid 18778] <... exit_group resumed>)   = ?
[pid 18779] +++ exited with 0 +++
[pid 18778] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18778, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18780 attached
, child_tidptr=0x55557c828690) = 18780
[pid 18780] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18780] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18780] setpgid(0, 0)               = 0
[pid 18780] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18780] write(3, "1000", 4)         = 4
executing program
[pid 18780] close(3)                    = 0
[pid 18780] write(1, "executing program\n", 18) = 18
[pid 18780] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18780] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18780] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18780] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18780] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18780] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18780] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18781 attached
 => {parent_tid=[18781]}, 88) = 18781
[pid 18780] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18780] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18780] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18781] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18781] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18781] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18781] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18780] <... futex resumed>)        = 0
[pid 18781] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18780] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18781] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18780] <... futex resumed>)        = 0
[pid 18781] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18780] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18781] <... futex resumed>)        = 0
[pid 18780] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18781] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18780] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18781] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18780] <... futex resumed>)        = 0
[pid 18781] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18780] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18781] <... futex resumed>)        = 0
[pid 18780] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18781] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18780] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18781] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18780] <... futex resumed>)        = 0
[pid 18781] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18780] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18781] <... futex resumed>)        = 0
[pid 18780] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18781] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18780] exit_group(0 <unfinished ...>
[pid 18781] <... futex resumed>)        = ?
[pid 18780] <... exit_group resumed>)   = ?
[pid 18781] +++ exited with 0 +++
[pid 18780] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18780, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18782 attached
, child_tidptr=0x55557c828690) = 18782
[pid 18782] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18782] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18782] setpgid(0, 0)               = 0
[pid 18782] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18782] write(3, "1000", 4)         = 4
[pid 18782] close(3)                    = 0
executing program
[pid 18782] write(1, "executing program\n", 18) = 18
[pid 18782] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18782] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18782] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18782] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18782] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18782] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18782] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18783]}, 88) = 18783
./strace-static-x86_64: Process 18783 attached
[pid 18783] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18782] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18783] <... set_robust_list resumed>) = 0
[pid 18782] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18783] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18782] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18783] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18782] <... futex resumed>)        = 0
[pid 18783] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18782] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18783] <... 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 18783] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18782] <... futex resumed>)        = 0
[pid 18783] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18782] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18783] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18782] <... futex resumed>)        = 0
[pid 18783] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18782] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18783] <... futex resumed>)        = 0
[pid 18782] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18783] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18782] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18783] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18782] <... futex resumed>)        = 0
[pid 18783] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18782] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18783] <... futex resumed>)        = 0
[pid 18782] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18783] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18782] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18783] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18782] <... futex resumed>)        = 0
[pid 18783] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18782] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18783] <... futex resumed>)        = 0
[pid 18782] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18783] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18782] exit_group(0 <unfinished ...>
[pid 18783] <... futex resumed>)        = ?
[pid 18782] <... exit_group resumed>)   = ?
[pid 18783] +++ exited with 0 +++
[pid 18782] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18782, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18784 attached
, child_tidptr=0x55557c828690) = 18784
[pid 18784] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18784] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18784] setpgid(0, 0)               = 0
[pid 18784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18784] write(3, "1000", 4)         = 4
[pid 18784] close(3)                    = 0
[pid 18784] write(1, "executing program\n", 18executing program
) = 18
[pid 18784] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18784] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18784] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18784] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18784] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18784] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18784] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18785]}, 88) = 18785
[pid 18784] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18784] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18784] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18785 attached
 <unfinished ...>
[pid 18785] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18785] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18785] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18785] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18784] <... futex resumed>)        = 0
[pid 18785] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18784] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18785] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18784] <... futex resumed>)        = 0
[pid 18785] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18784] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18785] <... futex resumed>)        = 0
[pid 18784] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18785] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18784] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18785] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18784] <... futex resumed>)        = 0
[pid 18785] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18784] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18785] <... futex resumed>)        = 0
[pid 18784] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18785] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18784] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18785] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18784] <... futex resumed>)        = 0
[pid 18785] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18784] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18785] <... futex resumed>)        = 0
[pid 18784] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18785] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18784] exit_group(0 <unfinished ...>
[pid 18785] <... futex resumed>)        = ?
[pid 18784] <... exit_group resumed>)   = ?
[pid 18785] +++ exited with 0 +++
[pid 18784] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18784, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18786
./strace-static-x86_64: Process 18786 attached
[pid 18786] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18786] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18786] setpgid(0, 0)               = 0
[pid 18786] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18786] write(3, "1000", 4executing program
)         = 4
[pid 18786] close(3)                    = 0
[pid 18786] write(1, "executing program\n", 18) = 18
[pid 18786] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18786] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18786] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18786] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18786] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18786] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18786] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18787 attached
 => {parent_tid=[18787]}, 88) = 18787
[pid 18786] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18786] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18786] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18787] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18787] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18787] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18787] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18786] <... futex resumed>)        = 0
[pid 18787] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18786] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18787] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18786] <... futex resumed>)        = 0
[pid 18787] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18786] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18787] <... futex resumed>)        = 0
[pid 18786] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18787] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18786] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18787] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18786] <... futex resumed>)        = 0
[pid 18787] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18786] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18787] <... futex resumed>)        = 0
[pid 18786] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18787] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18786] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18787] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18786] <... futex resumed>)        = 0
[pid 18787] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18786] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18787] <... futex resumed>)        = 0
[pid 18786] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18787] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18786] exit_group(0 <unfinished ...>
[pid 18787] <... futex resumed>)        = ?
[pid 18786] <... exit_group resumed>)   = ?
[pid 18787] +++ exited with 0 +++
[pid 18786] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18786, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18788
./strace-static-x86_64: Process 18788 attached
[pid 18788] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18788] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18788] setpgid(0, 0)               = 0
[pid 18788] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18788] write(3, "1000", 4)         = 4
[pid 18788] close(3)                    = 0
[pid 18788] write(1, "executing program\n", 18executing program
) = 18
[pid 18788] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18788] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18788] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18788] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18788] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18788] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18788] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18789]}, 88) = 18789
[pid 18788] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18788] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18788] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18789 attached
 <unfinished ...>
[pid 18789] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18789] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18789] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18789] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18789] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18788] <... futex resumed>)        = 0
[pid 18788] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18788] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18789] <... futex resumed>)        = 0
[pid 18789] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18789] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18788] <... futex resumed>)        = 0
[pid 18788] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18788] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18789] <... futex resumed>)        = 1
[pid 18789] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18789] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18788] <... futex resumed>)        = 0
[pid 18788] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18788] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18789] <... futex resumed>)        = 1
[pid 18789] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18789] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18788] <... futex resumed>)        = 0
[pid 18789] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18788] exit_group(0)               = ?
[pid 18789] <... futex resumed>)        = ?
[pid 18789] +++ exited with 0 +++
[pid 18788] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18788, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18790
./strace-static-x86_64: Process 18790 attached
[pid 18790] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18790] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18790] setpgid(0, 0)               = 0
[pid 18790] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18790] write(3, "1000", 4)         = 4
[pid 18790] close(3)                    = 0
executing program
[pid 18790] write(1, "executing program\n", 18) = 18
[pid 18790] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18790] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18790] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18790] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18790] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18790] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18790] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18791 attached
 => {parent_tid=[18791]}, 88) = 18791
[pid 18790] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18790] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18790] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18791] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18791] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18791] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18791] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18790] <... futex resumed>)        = 0
[pid 18790] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18790] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18791] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18791] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18790] <... futex resumed>)        = 0
[pid 18790] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18790] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18791] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18791] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18790] <... futex resumed>)        = 0
[pid 18790] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18790] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18791] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18791] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18790] <... futex resumed>)        = 0
[pid 18790] exit_group(0)               = ?
[pid 18791] +++ exited with 0 +++
[pid 18790] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18790, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18792
./strace-static-x86_64: Process 18792 attached
[pid 18792] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18792] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18792] setpgid(0, 0)               = 0
[pid 18792] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18792] write(3, "1000", 4)         = 4
[pid 18792] close(3)                    = 0
executing program
[pid 18792] write(1, "executing program\n", 18) = 18
[pid 18792] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18792] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18792] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18792] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18792] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18792] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18792] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18793]}, 88) = 18793
./strace-static-x86_64: Process 18793 attached
[pid 18792] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18792] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18792] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18793] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18793] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18793] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18793] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18792] <... futex resumed>)        = 0
[pid 18792] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18792] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18793] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18793] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18792] <... futex resumed>)        = 0
[pid 18792] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18792] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18793] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18793] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18792] <... futex resumed>)        = 0
[pid 18792] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18792] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18793] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18793] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18792] <... futex resumed>)        = 0
[pid 18792] exit_group(0)               = ?
[pid 18793] +++ exited with 0 +++
[pid 18792] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18792, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18794
./strace-static-x86_64: Process 18794 attached
[pid 18794] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18794] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18794] setpgid(0, 0)               = 0
[pid 18794] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18794] write(3, "1000", 4)         = 4
[pid 18794] close(3)                    = 0
[pid 18794] write(1, "executing program\n", 18executing program
) = 18
[pid 18794] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18794] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18794] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18794] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18794] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18794] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18794] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18795 attached
 => {parent_tid=[18795]}, 88) = 18795
[pid 18794] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18794] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18794] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18795] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18795] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18795] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18795] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18794] <... futex resumed>)        = 0
[pid 18794] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18794] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18795] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18795] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18794] <... futex resumed>)        = 0
[pid 18794] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18794] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18795] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18795] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18794] <... futex resumed>)        = 0
[pid 18794] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18794] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18795] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18795] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18794] <... futex resumed>)        = 0
[pid 18794] exit_group(0)               = ?
[pid 18795] +++ exited with 0 +++
[pid 18794] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18794, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18796
./strace-static-x86_64: Process 18796 attached
[pid 18796] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18796] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18796] setpgid(0, 0)               = 0
[pid 18796] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18796] write(3, "1000", 4)         = 4
[pid 18796] close(3executing program
)                    = 0
[pid 18796] write(1, "executing program\n", 18) = 18
[pid 18796] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18796] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18796] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18796] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18796] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18796] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18796] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18797 attached
 => {parent_tid=[18797]}, 88) = 18797
[pid 18797] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18796] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18796] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18796] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18797] <... set_robust_list resumed>) = 0
[pid 18797] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18797] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18797] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18796] <... futex resumed>)        = 0
[pid 18796] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18796] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18797] <... futex resumed>)        = 1
[pid 18797] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18797] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18796] <... futex resumed>)        = 0
[pid 18796] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18796] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18797] <... futex resumed>)        = 1
[pid 18797] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18797] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18796] <... futex resumed>)        = 0
[pid 18796] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18796] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18797] <... futex resumed>)        = 1
[pid 18797] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18797] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18796] <... futex resumed>)        = 0
[pid 18796] exit_group(0)               = ?
[pid 18797] <... futex resumed>)        = ?
[pid 18797] +++ exited with 0 +++
[pid 18796] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18796, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18798
./strace-static-x86_64: Process 18798 attached
[pid 18798] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18798] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18798] setpgid(0, 0)               = 0
[pid 18798] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18798] write(3, "1000", 4)         = 4
[pid 18798] close(3)                    = 0
executing program
[pid 18798] write(1, "executing program\n", 18) = 18
[pid 18798] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18798] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18798] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18798] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18798] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18798] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18798] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18799 attached
 => {parent_tid=[18799]}, 88) = 18799
[pid 18799] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18798] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18799] <... set_robust_list resumed>) = 0
[pid 18798] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18799] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18798] <... futex resumed>)        = 0
[pid 18799] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18798] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18799] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18799] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18798] <... futex resumed>)        = 0
[pid 18798] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18798] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18799] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18799] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18798] <... futex resumed>)        = 0
[pid 18798] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18798] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18799] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18799] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18798] <... futex resumed>)        = 0
[pid 18798] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18798] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18799] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18799] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18798] <... futex resumed>)        = 0
[pid 18798] exit_group(0)               = ?
[pid 18799] +++ exited with 0 +++
[pid 18798] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18798, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18800
./strace-static-x86_64: Process 18800 attached
[pid 18800] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18800] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18800] setpgid(0, 0)               = 0
[pid 18800] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18800] write(3, "1000", 4)         = 4
executing program
[pid 18800] close(3)                    = 0
[pid 18800] write(1, "executing program\n", 18) = 18
[pid 18800] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18800] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18800] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18800] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18800] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18800] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18800] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18801]}, 88) = 18801
./strace-static-x86_64: Process 18801 attached
[pid 18800] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18801] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18800] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18801] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18800] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18801] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18800] <... futex resumed>)        = 0
[pid 18801] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18800] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18801] <... 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 18801] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18800] <... futex resumed>)        = 0
[pid 18800] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18800] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18801] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18801] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18800] <... futex resumed>)        = 0
[pid 18800] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18800] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18801] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18801] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18800] <... futex resumed>)        = 0
[pid 18800] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18800] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18801] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18801] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18800] <... futex resumed>)        = 0
[pid 18800] exit_group(0 <unfinished ...>
[pid 18801] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18800] <... exit_group resumed>)   = ?
[pid 18801] <... futex resumed>)        = ?
[pid 18801] +++ exited with 0 +++
[pid 18800] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18800, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18802
./strace-static-x86_64: Process 18802 attached
[pid 18802] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18802] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18802] setpgid(0, 0)               = 0
[pid 18802] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18802] write(3, "1000", 4)         = 4
[pid 18802] close(3)                    = 0
executing program
[pid 18802] write(1, "executing program\n", 18) = 18
[pid 18802] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18802] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18802] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18802] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18802] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18802] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18802] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18803 attached
 => {parent_tid=[18803]}, 88) = 18803
[pid 18802] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18802] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18802] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18803] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18803] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18803] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18803] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18802] <... futex resumed>)        = 0
[pid 18802] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18802] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18803] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18803] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18802] <... futex resumed>)        = 0
[pid 18802] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18802] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18803] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18803] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18802] <... futex resumed>)        = 0
[pid 18802] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18802] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18803] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18803] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18802] <... futex resumed>)        = 0
[pid 18802] exit_group(0)               = ?
[pid 18803] +++ exited with 0 +++
[pid 18802] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18802, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18804
./strace-static-x86_64: Process 18804 attached
[pid 18804] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18804] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18804] setpgid(0, 0)               = 0
[pid 18804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18804] write(3, "1000", 4)         = 4
[pid 18804] close(3)                    = 0
[pid 18804] write(1, "executing program\n", 18executing program
) = 18
[pid 18804] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18804] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18804] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18804] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18804] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18804] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18804] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18805]}, 88) = 18805
./strace-static-x86_64: Process 18805 attached
[pid 18804] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18804] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18804] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18805] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18805] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18805] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18805] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18804] <... futex resumed>)        = 0
[pid 18805] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18804] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18805] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18804] <... futex resumed>)        = 0
[pid 18805] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18804] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18805] <... futex resumed>)        = 0
[pid 18804] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18805] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18804] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18805] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18804] <... futex resumed>)        = 0
[pid 18805] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18804] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18805] <... futex resumed>)        = 0
[pid 18804] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18805] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18804] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18805] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18804] <... futex resumed>)        = 0
[pid 18805] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18804] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18805] <... futex resumed>)        = 0
[pid 18804] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18805] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18804] exit_group(0 <unfinished ...>
[pid 18805] <... futex resumed>)        = ?
[pid 18804] <... exit_group resumed>)   = ?
[pid 18805] +++ exited with 0 +++
[pid 18804] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18804, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18806
./strace-static-x86_64: Process 18806 attached
[pid 18806] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18806] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18806] setpgid(0, 0)               = 0
[pid 18806] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18806] write(3, "1000", 4)         = 4
[pid 18806] close(3)                    = 0
executing program
[pid 18806] write(1, "executing program\n", 18) = 18
[pid 18806] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18806] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18806] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18806] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18806] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18806] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18806] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18807]}, 88) = 18807
[pid 18806] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18806] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18806] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18807 attached
 <unfinished ...>
[pid 18807] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18807] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18807] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18807] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18806] <... futex resumed>)        = 0
[pid 18806] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18806] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18807] <... futex resumed>)        = 1
[pid 18807] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18807] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18806] <... futex resumed>)        = 0
[pid 18806] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18806] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18807] <... futex resumed>)        = 1
[pid 18807] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18807] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18806] <... futex resumed>)        = 0
[pid 18806] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18806] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18807] <... futex resumed>)        = 1
[pid 18807] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18807] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18806] <... futex resumed>)        = 0
[pid 18806] exit_group(0)               = ?
[pid 18807] <... futex resumed>)        = ?
[pid 18807] +++ exited with 0 +++
[pid 18806] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18806, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18808
./strace-static-x86_64: Process 18808 attached
[pid 18808] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18808] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18808] setpgid(0, 0)               = 0
[pid 18808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18808] write(3, "1000", 4)         = 4
[pid 18808] close(3)                    = 0
executing program
[pid 18808] write(1, "executing program\n", 18) = 18
[pid 18808] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18808] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18808] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18808] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18808] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18808] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18808] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18809]}, 88) = 18809
./strace-static-x86_64: Process 18809 attached
[pid 18808] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18808] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18808] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18809] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18809] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18809] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18809] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18808] <... futex resumed>)        = 0
[pid 18808] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18808] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18809] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18809] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18808] <... futex resumed>)        = 0
[pid 18808] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18808] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18809] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18809] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18808] <... futex resumed>)        = 0
[pid 18808] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18808] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18809] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18809] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18808] <... futex resumed>)        = 0
[pid 18808] exit_group(0)               = ?
[pid 18809] +++ exited with 0 +++
[pid 18808] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18808, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18810
./strace-static-x86_64: Process 18810 attached
[pid 18810] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18810] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18810] setpgid(0, 0)               = 0
[pid 18810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18810] write(3, "1000", 4)         = 4
[pid 18810] close(3)                    = 0
executing program
[pid 18810] write(1, "executing program\n", 18) = 18
[pid 18810] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18810] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18810] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18810] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18810] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18810] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18810] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18811]}, 88) = 18811
[pid 18810] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18810] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18810] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18811 attached
 <unfinished ...>
[pid 18811] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18811] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18811] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18811] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18810] <... futex resumed>)        = 0
[pid 18810] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18810] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18811] <... futex resumed>)        = 1
[pid 18811] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18811] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18810] <... futex resumed>)        = 0
[pid 18810] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18810] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18811] <... futex resumed>)        = 1
[pid 18811] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18811] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18810] <... futex resumed>)        = 0
[pid 18810] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18810] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18811] <... futex resumed>)        = 1
[pid 18811] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18811] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18810] <... futex resumed>)        = 0
[pid 18810] exit_group(0)               = ?
[pid 18811] <... futex resumed>)        = ?
[pid 18811] +++ exited with 0 +++
[pid 18810] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18810, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18812
./strace-static-x86_64: Process 18812 attached
[pid 18812] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18812] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18812] setpgid(0, 0)               = 0
[pid 18812] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18812] write(3, "1000", 4)         = 4
[pid 18812] close(3executing program
)                    = 0
[pid 18812] write(1, "executing program\n", 18) = 18
[pid 18812] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18812] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18812] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18812] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18812] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18812] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18812] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18813 attached
 => {parent_tid=[18813]}, 88) = 18813
[pid 18813] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18812] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18813] <... set_robust_list resumed>) = 0
[pid 18813] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18812] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18813] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18812] <... futex resumed>)        = 0
[pid 18813] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18812] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18813] <... 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 18813] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18812] <... futex resumed>)        = 0
[pid 18812] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18812] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18813] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18813] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18812] <... futex resumed>)        = 0
[pid 18812] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18812] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18813] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18813] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18813] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18812] <... futex resumed>)        = 0
[pid 18812] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18813] <... futex resumed>)        = 0
[pid 18812] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18813] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18813] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18812] <... futex resumed>)        = 0
[pid 18812] exit_group(0)               = ?
[pid 18813] +++ exited with 0 +++
[pid 18812] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18812, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18814
./strace-static-x86_64: Process 18814 attached
[pid 18814] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18814] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18814] setpgid(0, 0)               = 0
[pid 18814] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18814] write(3, "1000", 4)         = 4
[pid 18814] close(3)                    = 0
[pid 18814] write(1, "executing program\n", 18executing program
) = 18
[pid 18814] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18814] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18814] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18814] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18814] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18814] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18814] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18815 attached
 => {parent_tid=[18815]}, 88) = 18815
[pid 18814] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18814] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18814] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18815] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18815] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18815] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18815] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18814] <... futex resumed>)        = 0
[pid 18814] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18814] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18815] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18815] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18814] <... futex resumed>)        = 0
[pid 18814] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18814] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18815] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18815] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18814] <... futex resumed>)        = 0
[pid 18814] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18814] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18815] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18815] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18815] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18814] <... futex resumed>)        = 0
[pid 18814] exit_group(0)               = ?
[pid 18815] <... futex resumed>)        = ?
[pid 18815] +++ exited with 0 +++
[pid 18814] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18814, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18816
./strace-static-x86_64: Process 18816 attached
[pid 18816] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18816] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18816] setpgid(0, 0)               = 0
[pid 18816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18816] write(3, "1000", 4)         = 4
[pid 18816] close(3)                    = 0
[pid 18816] write(1, "executing program\n", 18executing program
) = 18
[pid 18816] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18816] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18816] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18816] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18816] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18816] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18816] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18817]}, 88) = 18817
./strace-static-x86_64: Process 18817 attached
[pid 18817] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18817] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18817] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18816] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18816] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18817] <... futex resumed>)        = 0
[pid 18817] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18816] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18817] <... 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 18817] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18816] <... futex resumed>)        = 0
[pid 18816] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18816] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18817] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18817] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18816] <... futex resumed>)        = 0
[pid 18816] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18816] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18817] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18817] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18816] <... futex resumed>)        = 0
[pid 18816] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18816] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18817] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18817] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18816] <... futex resumed>)        = 0
[pid 18816] exit_group(0)               = ?
[pid 18817] +++ exited with 0 +++
[pid 18816] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18816, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18818 attached
 <unfinished ...>
[pid 18818] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18818
[pid 18818] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18818] setpgid(0, 0)               = 0
[pid 18818] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18818] write(3, "1000", 4)         = 4
[pid 18818] close(3executing program
)                    = 0
[pid 18818] write(1, "executing program\n", 18) = 18
[pid 18818] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18818] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18818] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18818] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18818] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18818] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18818] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18819 attached
 <unfinished ...>
[pid 18819] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18818] <... clone3 resumed> => {parent_tid=[18819]}, 88) = 18819
[pid 18819] <... set_robust_list resumed>) = 0
[pid 18819] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18819] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18818] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18818] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18818] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18819] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18819] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18819] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18818] <... futex resumed>)        = 0
[pid 18818] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18818] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18819] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18819] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18818] <... futex resumed>)        = 0
[pid 18818] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18818] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18819] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18819] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18818] <... futex resumed>)        = 0
[pid 18818] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18818] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18819] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18819] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18819] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18818] <... futex resumed>)        = 0
[pid 18818] exit_group(0)               = ?
[pid 18819] <... futex resumed>)        = ?
[pid 18819] +++ exited with 0 +++
[pid 18818] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18818, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18820 attached
, child_tidptr=0x55557c828690) = 18820
[pid 18820] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18820] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18820] setpgid(0, 0)               = 0
[pid 18820] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18820] write(3, "1000", 4)         = 4
[pid 18820] close(3)                    = 0
executing program
[pid 18820] write(1, "executing program\n", 18) = 18
[pid 18820] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18820] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18820] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18820] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18820] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18820] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18820] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18821 attached
 => {parent_tid=[18821]}, 88) = 18821
[pid 18821] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18820] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18820] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18820] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18821] <... set_robust_list resumed>) = 0
[pid 18821] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18821] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18821] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18820] <... futex resumed>)        = 0
[pid 18820] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18820] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18821] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18821] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18820] <... futex resumed>)        = 0
[pid 18820] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18820] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18821] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18821] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18820] <... futex resumed>)        = 0
[pid 18820] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18820] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18821] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18821] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18820] <... futex resumed>)        = 0
[pid 18820] exit_group(0)               = ?
[pid 18821] +++ exited with 0 +++
[pid 18820] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18820, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18822 attached
, child_tidptr=0x55557c828690) = 18822
[pid 18822] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18822] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18822] setpgid(0, 0)               = 0
[pid 18822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18822] write(3, "1000", 4)         = 4
[pid 18822] close(3)                    = 0
[pid 18822] write(1, "executing program\n", 18executing program
) = 18
[pid 18822] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18822] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18822] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18822] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18822] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18822] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18822] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18823]}, 88) = 18823
./strace-static-x86_64: Process 18823 attached
[pid 18823] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18823] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18823] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18822] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18822] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18823] <... futex resumed>)        = 0
[pid 18823] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18822] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18823] <... 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 18823] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18823] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18822] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18822] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18822] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18823] <... futex resumed>)        = 0
[pid 18823] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18823] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18823] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18822] <... futex resumed>)        = 0
[pid 18822] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18822] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18823] <... futex resumed>)        = 0
[pid 18823] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18823] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18822] <... futex resumed>)        = 0
[pid 18822] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18822] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18823] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18823] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18822] <... futex resumed>)        = 0
[pid 18822] exit_group(0)               = ?
[pid 18823] +++ exited with 0 +++
[pid 18822] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18822, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18824
./strace-static-x86_64: Process 18824 attached
[pid 18824] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18824] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18824] setpgid(0, 0)               = 0
[pid 18824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18824] write(3, "1000", 4)         = 4
[pid 18824] close(3)                    = 0
[pid 18824] write(1, "executing program\n", 18executing program
) = 18
[pid 18824] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18824] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18824] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18824] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18824] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18824] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18824] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18825 attached
 => {parent_tid=[18825]}, 88) = 18825
[pid 18824] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18824] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18824] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18825] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18825] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18825] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18825] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18824] <... futex resumed>)        = 0
[pid 18824] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18824] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18825] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18825] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18824] <... futex resumed>)        = 0
[pid 18824] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18824] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18825] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18825] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18824] <... futex resumed>)        = 0
[pid 18824] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18824] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18825] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18825] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18824] <... futex resumed>)        = 0
[pid 18824] exit_group(0 <unfinished ...>
[pid 18825] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18824] <... exit_group resumed>)   = ?
[pid 18825] <... futex resumed>)        = ?
[pid 18825] +++ exited with 0 +++
[pid 18824] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18824, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18826
./strace-static-x86_64: Process 18826 attached
[pid 18826] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18826] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18826] setpgid(0, 0)               = 0
[pid 18826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18826] write(3, "1000", 4executing program
)         = 4
[pid 18826] close(3)                    = 0
[pid 18826] write(1, "executing program\n", 18) = 18
[pid 18826] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18826] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18826] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18826] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18826] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18826] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18826] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18827]}, 88) = 18827
[pid 18826] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18826] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18826] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18827 attached
 <unfinished ...>
[pid 18827] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18827] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18827] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18827] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18826] <... futex resumed>)        = 0
[pid 18826] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18826] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18827] <... futex resumed>)        = 1
[pid 18827] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18827] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18826] <... futex resumed>)        = 0
[pid 18826] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18826] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18827] <... futex resumed>)        = 1
[pid 18827] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18827] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18826] <... futex resumed>)        = 0
[pid 18826] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18826] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18827] <... futex resumed>)        = 1
[pid 18827] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18827] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18826] <... futex resumed>)        = 0
[pid 18826] exit_group(0)               = ?
[pid 18827] <... futex resumed>)        = ?
[pid 18827] +++ exited with 0 +++
[pid 18826] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18826, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18828 attached
, child_tidptr=0x55557c828690) = 18828
[pid 18828] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18828] setpgid(0, 0)               = 0
[pid 18828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18828] write(3, "1000", 4)         = 4
[pid 18828] close(3executing program
)                    = 0
[pid 18828] write(1, "executing program\n", 18) = 18
[pid 18828] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18828] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18828] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18828] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18828] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18828] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18828] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18829]}, 88) = 18829
./strace-static-x86_64: Process 18829 attached
[pid 18828] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18828] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18828] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18829] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18829] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18829] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18829] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18828] <... futex resumed>)        = 0
[pid 18828] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18828] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18829] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18829] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18828] <... futex resumed>)        = 0
[pid 18828] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18828] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18829] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18829] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18828] <... futex resumed>)        = 0
[pid 18828] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18828] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18829] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18829] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18828] <... futex resumed>)        = 0
[pid 18828] exit_group(0)               = ?
[pid 18829] +++ exited with 0 +++
[pid 18828] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18828, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18830
./strace-static-x86_64: Process 18830 attached
[pid 18830] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18830] setpgid(0, 0)               = 0
[pid 18830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18830] write(3, "1000", 4)         = 4
executing program
[pid 18830] close(3)                    = 0
[pid 18830] write(1, "executing program\n", 18) = 18
[pid 18830] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18830] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18830] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18830] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18830] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18830] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18830] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18831]}, 88) = 18831
[pid 18830] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18830] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18830] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18831 attached
 <unfinished ...>
[pid 18831] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18831] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18831] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18831] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18830] <... futex resumed>)        = 0
[pid 18830] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18830] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18831] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18831] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18830] <... futex resumed>)        = 0
[pid 18830] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18830] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18831] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18831] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18830] <... futex resumed>)        = 0
[pid 18830] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18830] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18831] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18831] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18830] <... futex resumed>)        = 0
[pid 18830] exit_group(0)               = ?
[pid 18831] +++ exited with 0 +++
[pid 18830] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18830, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18832 attached
, child_tidptr=0x55557c828690) = 18832
[pid 18832] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18832] setpgid(0, 0)               = 0
[pid 18832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18832] write(3, "1000", 4)         = 4
[pid 18832] close(3)                    = 0
[pid 18832] write(1, "executing program\n", 18executing program
) = 18
[pid 18832] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18832] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18832] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18832] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18832] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18832] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18832] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18833 attached
 => {parent_tid=[18833]}, 88) = 18833
[pid 18832] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18832] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18832] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18833] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18833] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18833] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18833] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18832] <... futex resumed>)        = 0
[pid 18832] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18832] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18833] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18833] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18832] <... futex resumed>)        = 0
[pid 18832] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18832] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18833] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18833] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18832] <... futex resumed>)        = 0
[pid 18832] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18832] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18833] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18833] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18833] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18832] <... futex resumed>)        = 0
[pid 18832] exit_group(0)               = ?
[pid 18833] <... futex resumed>)        = ?
[pid 18833] +++ exited with 0 +++
[pid 18832] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18832, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18834
./strace-static-x86_64: Process 18834 attached
[pid 18834] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18834] setpgid(0, 0)               = 0
[pid 18834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18834] write(3, "1000", 4)         = 4
[pid 18834] close(3executing program
)                    = 0
[pid 18834] write(1, "executing program\n", 18) = 18
[pid 18834] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18834] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18834] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18834] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18834] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18834] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18834] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18835 attached
 => {parent_tid=[18835]}, 88) = 18835
[pid 18835] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18834] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18835] <... set_robust_list resumed>) = 0
[pid 18834] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18834] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18834] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18835] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18835] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18835] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18834] <... futex resumed>)        = 0
[pid 18835] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18834] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18835] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18834] <... futex resumed>)        = 0
[pid 18835] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18834] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18835] <... futex resumed>)        = 0
[pid 18834] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18835] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18834] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18835] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18834] <... futex resumed>)        = 0
[pid 18835] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18834] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18835] <... futex resumed>)        = 0
[pid 18834] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18835] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18834] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18835] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18834] <... futex resumed>)        = 0
[pid 18835] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18834] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18835] <... futex resumed>)        = 0
[pid 18834] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18835] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18834] exit_group(0 <unfinished ...>
[pid 18835] <... futex resumed>)        = ?
[pid 18834] <... exit_group resumed>)   = ?
[pid 18835] +++ exited with 0 +++
[pid 18834] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18834, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18836 attached
 <unfinished ...>
[pid 18836] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18836] setpgid(0, 0)               = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18836
[pid 18836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18836] write(3, "1000", 4)         = 4
[pid 18836] close(3)                    = 0
executing program
[pid 18836] write(1, "executing program\n", 18) = 18
[pid 18836] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18836] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18836] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18836] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18836] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18836] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18836] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18837]}, 88) = 18837
./strace-static-x86_64: Process 18837 attached
[pid 18837] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18837] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18837] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18836] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18836] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18837] <... futex resumed>)        = 0
[pid 18836] <... futex resumed>)        = 1
[pid 18837] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18836] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18837] <... 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 18837] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18837] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18836] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18836] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18837] <... futex resumed>)        = 0
[pid 18836] <... futex resumed>)        = 1
[pid 18837] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18836] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18837] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18837] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18836] <... futex resumed>)        = 0
[pid 18837] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18836] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18837] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18836] <... futex resumed>)        = 0
[pid 18837] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18836] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18837] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18837] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18836] <... futex resumed>)        = 0
[pid 18837] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18836] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18837] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18836] <... futex resumed>)        = 0
[pid 18837] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18836] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18837] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18837] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18836] <... futex resumed>)        = 0
[pid 18837] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18836] exit_group(0 <unfinished ...>
[pid 18837] <... futex resumed>)        = ?
[pid 18836] <... exit_group resumed>)   = ?
[pid 18837] +++ exited with 0 +++
[pid 18836] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18836, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18838
./strace-static-x86_64: Process 18838 attached
[pid 18838] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18838] setpgid(0, 0)               = 0
[pid 18838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18838] write(3, "1000", 4)         = 4
[pid 18838] close(3executing program
)                    = 0
[pid 18838] write(1, "executing program\n", 18) = 18
[pid 18838] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18838] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18838] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18838] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18838] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18838] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18838] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18839 attached
 => {parent_tid=[18839]}, 88) = 18839
[pid 18839] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18838] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18839] <... set_robust_list resumed>) = 0
[pid 18838] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18839] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18838] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18839] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18838] <... futex resumed>)        = 0
[pid 18839] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18838] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18839] <... 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 18839] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18838] <... futex resumed>)        = 0
[pid 18839] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18838] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18839] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18838] <... futex resumed>)        = 0
[pid 18839] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18838] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18839] <... futex resumed>)        = 0
[pid 18838] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18839] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18838] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18839] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18838] <... futex resumed>)        = 0
[pid 18839] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18838] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18839] <... futex resumed>)        = 0
[pid 18838] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18839] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18838] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18839] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18838] <... futex resumed>)        = 0
[pid 18839] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18838] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18839] <... futex resumed>)        = 0
[pid 18838] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18839] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18838] exit_group(0 <unfinished ...>
[pid 18839] <... futex resumed>)        = ?
[pid 18838] <... exit_group resumed>)   = ?
[pid 18839] +++ exited with 0 +++
[pid 18838] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18838, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18840
./strace-static-x86_64: Process 18840 attached
[pid 18840] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18840] setpgid(0, 0)               = 0
[pid 18840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18840] write(3, "1000", 4)         = 4
[pid 18840] close(3)                    = 0
[pid 18840] write(1, "executing program\n", 18executing program
) = 18
[pid 18840] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18840] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18840] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18840] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18840] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18840] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18840] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18841 attached
 => {parent_tid=[18841]}, 88) = 18841
[pid 18840] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18840] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18840] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18841] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18841] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18841] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18841] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18840] <... futex resumed>)        = 0
[pid 18841] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18840] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18841] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18840] <... futex resumed>)        = 0
[pid 18841] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18840] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18841] <... futex resumed>)        = 0
[pid 18840] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18841] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18840] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18841] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18840] <... futex resumed>)        = 0
[pid 18841] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18840] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18841] <... futex resumed>)        = 0
[pid 18840] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18841] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18840] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18841] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18840] <... futex resumed>)        = 0
[pid 18841] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18840] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18841] <... futex resumed>)        = 0
[pid 18840] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18841] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18840] exit_group(0 <unfinished ...>
[pid 18841] <... futex resumed>)        = ?
[pid 18840] <... exit_group resumed>)   = ?
[pid 18841] +++ exited with 0 +++
[pid 18840] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18840, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18842
./strace-static-x86_64: Process 18842 attached
[pid 18842] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18842] setpgid(0, 0)               = 0
[pid 18842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18842] write(3, "1000", 4)         = 4
[pid 18842] close(3)                    = 0
executing program
[pid 18842] write(1, "executing program\n", 18) = 18
[pid 18842] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18842] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18842] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18842] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18842] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18842] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18842] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18843]}, 88) = 18843
./strace-static-x86_64: Process 18843 attached
[pid 18842] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18842] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18842] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18843] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18843] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18843] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18843] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18842] <... futex resumed>)        = 0
[pid 18842] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18842] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18843] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18843] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18842] <... futex resumed>)        = 0
[pid 18842] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18842] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18843] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18843] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18842] <... futex resumed>)        = 0
[pid 18842] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18842] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18843] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18843] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18842] <... futex resumed>)        = 0
[pid 18842] exit_group(0)               = ?
[pid 18843] +++ exited with 0 +++
[pid 18842] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18842, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18844
./strace-static-x86_64: Process 18844 attached
[pid 18844] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18844] setpgid(0, 0)               = 0
[pid 18844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18844] write(3, "1000", 4)         = 4
[pid 18844] close(3)                    = 0
[pid 18844] write(1, "executing program\n", 18executing program
) = 18
[pid 18844] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18844] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18844] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18844] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18844] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18844] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18844] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18845 attached
 => {parent_tid=[18845]}, 88) = 18845
[pid 18845] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18844] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18844] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18844] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18845] <... set_robust_list resumed>) = 0
[pid 18845] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18845] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18845] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18845] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18844] <... futex resumed>)        = 0
[pid 18844] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18844] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18845] <... futex resumed>)        = 0
[pid 18845] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18845] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18845] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18844] <... futex resumed>)        = 0
[pid 18844] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18845] <... futex resumed>)        = 0
[pid 18844] <... futex resumed>)        = 1
[pid 18845] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18845] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18845] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18844] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 18844] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18844] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18845] <... futex resumed>)        = 0
[pid 18845] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18845] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18844] <... futex resumed>)        = 0
[pid 18844] exit_group(0)               = ?
[pid 18845] +++ exited with 0 +++
[pid 18844] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18844, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18846 attached
, child_tidptr=0x55557c828690) = 18846
[pid 18846] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18846] setpgid(0, 0)               = 0
[pid 18846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18846] write(3, "1000", 4)         = 4
[pid 18846] close(3executing program
)                    = 0
[pid 18846] write(1, "executing program\n", 18) = 18
[pid 18846] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18846] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18846] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18846] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18846] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18846] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18846] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18847]}, 88) = 18847
./strace-static-x86_64: Process 18847 attached
[pid 18846] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18846] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18846] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18847] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18847] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18847] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18847] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18847] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18846] <... futex resumed>)        = 0
[pid 18846] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18847] <... futex resumed>)        = 0
[pid 18847] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18847] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18847] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18846] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 18846] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18847] <... futex resumed>)        = 0
[pid 18846] <... futex resumed>)        = 1
[pid 18847] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18846] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18847] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18847] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18847] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18846] <... futex resumed>)        = 0
[pid 18846] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18847] <... futex resumed>)        = 0
[pid 18847] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18846] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18847] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18847] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18846] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18846] exit_group(0)               = ?
[pid 18847] <... futex resumed>)        = ?
[pid 18847] +++ exited with 0 +++
[pid 18846] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18846, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18848 attached
, child_tidptr=0x55557c828690) = 18848
[pid 18848] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18848] setpgid(0, 0)               = 0
[pid 18848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18848] write(3, "1000", 4)         = 4
[pid 18848] close(3)                    = 0
executing program
[pid 18848] write(1, "executing program\n", 18) = 18
[pid 18848] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18848] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18848] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18848] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18848] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18848] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18848] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18849 attached
 => {parent_tid=[18849]}, 88) = 18849
[pid 18848] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18848] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18848] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18849] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18849] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18849] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18849] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18848] <... futex resumed>)        = 0
[pid 18849] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18848] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18849] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18848] <... futex resumed>)        = 0
[pid 18849] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18848] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18849] <... futex resumed>)        = 0
[pid 18848] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18849] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18848] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18849] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18848] <... futex resumed>)        = 0
[pid 18849] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18848] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18849] <... futex resumed>)        = 0
[pid 18848] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18849] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18848] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18849] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18848] <... futex resumed>)        = 0
[pid 18849] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18848] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18849] <... futex resumed>)        = 0
[pid 18848] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18849] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18848] exit_group(0 <unfinished ...>
[pid 18849] <... futex resumed>)        = ?
[pid 18848] <... exit_group resumed>)   = ?
[pid 18849] +++ exited with 0 +++
[pid 18848] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18848, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18850
./strace-static-x86_64: Process 18850 attached
[pid 18850] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18850] setpgid(0, 0)               = 0
[pid 18850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18850] write(3, "1000", 4)         = 4
[pid 18850] close(3)                    = 0
executing program
[pid 18850] write(1, "executing program\n", 18) = 18
[pid 18850] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18850] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18850] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18850] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18850] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18850] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18850] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18851]}, 88) = 18851
./strace-static-x86_64: Process 18851 attached
[pid 18851] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18851] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18851] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18850] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18850] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18851] <... futex resumed>)        = 0
[pid 18851] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18850] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18851] <... 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 18851] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18850] <... futex resumed>)        = 0
[pid 18850] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18850] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18851] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18851] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18850] <... futex resumed>)        = 0
[pid 18850] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18850] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18851] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18851] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18850] <... futex resumed>)        = 0
[pid 18850] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18850] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18851] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18851] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18850] <... futex resumed>)        = 0
[pid 18850] exit_group(0)               = ?
[pid 18851] +++ exited with 0 +++
[pid 18850] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18850, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18852 attached
, child_tidptr=0x55557c828690) = 18852
[pid 18852] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18852] setpgid(0, 0)               = 0
[pid 18852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18852] write(3, "1000", 4)         = 4
[pid 18852] close(3)                    = 0
[pid 18852] write(1, "executing program\n", 18executing program
) = 18
[pid 18852] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18852] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18852] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18852] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18852] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18852] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18852] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18853 attached
 => {parent_tid=[18853]}, 88) = 18853
[pid 18853] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18852] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18853] <... set_robust_list resumed>) = 0
[pid 18852] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18853] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18852] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18853] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18852] <... futex resumed>)        = 0
[pid 18853] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18853] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18853] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18852] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 18852] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18853] <... futex resumed>)        = 0
[pid 18853] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18852] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18853] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18853] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18852] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18852] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18853] <... futex resumed>)        = 0
[pid 18853] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18852] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18853] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18852] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18853] <... futex resumed>)        = 0
[pid 18852] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18853] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18852] <... futex resumed>)        = 0
[pid 18852] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18853] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18853] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18852] <... futex resumed>)        = 0
[pid 18852] exit_group(0)               = ?
[pid 18853] +++ exited with 0 +++
[pid 18852] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18852, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18854
./strace-static-x86_64: Process 18854 attached
[pid 18854] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18854] setpgid(0, 0)               = 0
[pid 18854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18854] write(3, "1000", 4)         = 4
[pid 18854] close(3)                    = 0
executing program
[pid 18854] write(1, "executing program\n", 18) = 18
[pid 18854] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18854] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18854] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18854] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18854] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18854] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18854] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18855 attached
 <unfinished ...>
[pid 18855] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18854] <... clone3 resumed> => {parent_tid=[18855]}, 88) = 18855
[pid 18854] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18854] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18854] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18855] <... set_robust_list resumed>) = 0
[pid 18855] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18855] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18855] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18854] <... futex resumed>)        = 0
[pid 18854] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18854] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18855] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18855] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18854] <... futex resumed>)        = 0
[pid 18854] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18854] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18855] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18855] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18854] <... futex resumed>)        = 0
[pid 18854] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18854] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18855] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18855] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18854] <... futex resumed>)        = 0
[pid 18854] exit_group(0)               = ?
[pid 18855] +++ exited with 0 +++
[pid 18854] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18854, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18856 attached
 <unfinished ...>
[pid 18856] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18856
[pid 18856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18856] setpgid(0, 0)               = 0
[pid 18856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18856] write(3, "1000", 4)         = 4
[pid 18856] close(3)                    = 0
executing program
[pid 18856] write(1, "executing program\n", 18) = 18
[pid 18856] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18856] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18856] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18856] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18856] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18856] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18856] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18857 attached
 => {parent_tid=[18857]}, 88) = 18857
[pid 18857] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18856] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18857] <... set_robust_list resumed>) = 0
[pid 18856] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18857] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18856] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18857] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18856] <... futex resumed>)        = 0
[pid 18856] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18857] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18857] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18857] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18856] <... futex resumed>)        = 0
[pid 18856] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18857] <... futex resumed>)        = 0
[pid 18856] <... futex resumed>)        = 1
[pid 18857] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18856] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18857] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18857] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18856] <... futex resumed>)        = 0
[pid 18857] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18856] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18857] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18856] <... futex resumed>)        = 0
[pid 18857] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18856] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18857] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18857] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18856] <... futex resumed>)        = 0
[pid 18857] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18856] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18857] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18856] <... futex resumed>)        = 0
[pid 18857] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18856] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18857] <... futex resumed>)        = 0
[pid 18856] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18857] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18856] exit_group(0 <unfinished ...>
[pid 18857] <... futex resumed>)        = ?
[pid 18856] <... exit_group resumed>)   = ?
[pid 18857] +++ exited with 0 +++
[pid 18856] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18856, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18858
./strace-static-x86_64: Process 18858 attached
[pid 18858] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18858] setpgid(0, 0)               = 0
[pid 18858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18858] write(3, "1000", 4executing program
)         = 4
[pid 18858] close(3)                    = 0
[pid 18858] write(1, "executing program\n", 18) = 18
[pid 18858] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18858] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18858] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18858] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18858] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18858] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18858] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18859 attached
 => {parent_tid=[18859]}, 88) = 18859
[pid 18859] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18859] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18859] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18858] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18858] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18859] <... futex resumed>)        = 0
[pid 18858] <... futex resumed>)        = 1
[pid 18859] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18858] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18859] <... 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 18859] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18858] <... futex resumed>)        = 0
[pid 18859] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18858] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18859] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18858] <... futex resumed>)        = 0
[pid 18859] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18858] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18859] <... futex resumed>)        = 0
[pid 18858] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18859] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18858] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18859] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18858] <... futex resumed>)        = 0
[pid 18859] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18858] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18859] <... futex resumed>)        = 0
[pid 18858] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18859] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18858] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18859] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18858] <... futex resumed>)        = 0
[pid 18859] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18858] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18859] <... futex resumed>)        = 0
[pid 18858] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18859] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18858] exit_group(0 <unfinished ...>
[pid 18859] <... futex resumed>)        = ?
[pid 18858] <... exit_group resumed>)   = ?
[pid 18859] +++ exited with 0 +++
[pid 18858] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18858, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18860 attached
, child_tidptr=0x55557c828690) = 18860
[pid 18860] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18860] setpgid(0, 0)               = 0
[pid 18860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18860] write(3, "1000", 4)         = 4
[pid 18860] close(3)                    = 0
[pid 18860] write(1, "executing program\n", 18executing program
) = 18
[pid 18860] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18860] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18860] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18860] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18860] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18860] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18860] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18861]}, 88) = 18861
./strace-static-x86_64: Process 18861 attached
[pid 18860] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18860] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18860] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18861] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18861] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18861] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18861] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18860] <... futex resumed>)        = 0
[pid 18861] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18860] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18861] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18860] <... futex resumed>)        = 0
[pid 18861] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18860] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18861] <... futex resumed>)        = 0
[pid 18860] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18861] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18860] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18861] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18860] <... futex resumed>)        = 0
[pid 18861] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18860] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18861] <... futex resumed>)        = 0
[pid 18860] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18861] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18860] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18861] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18860] <... futex resumed>)        = 0
[pid 18861] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18860] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18861] <... futex resumed>)        = 0
[pid 18860] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18861] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18860] exit_group(0 <unfinished ...>
[pid 18861] <... futex resumed>)        = ?
[pid 18860] <... exit_group resumed>)   = ?
[pid 18861] +++ exited with 0 +++
[pid 18860] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18860, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18862 attached
, child_tidptr=0x55557c828690) = 18862
[pid 18862] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18862] setpgid(0, 0)               = 0
[pid 18862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18862] write(3, "1000", 4)         = 4
[pid 18862] close(3)                    = 0
executing program
[pid 18862] write(1, "executing program\n", 18) = 18
[pid 18862] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18862] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18862] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18862] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18862] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18862] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18862] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18863 attached
 => {parent_tid=[18863]}, 88) = 18863
[pid 18862] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18862] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18862] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18863] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18863] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18863] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18863] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18862] <... futex resumed>)        = 0
[pid 18862] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18862] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18863] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18863] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18862] <... futex resumed>)        = 0
[pid 18862] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18862] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18863] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18863] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18862] <... futex resumed>)        = 0
[pid 18862] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18862] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18863] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18863] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18862] <... futex resumed>)        = 0
[pid 18862] exit_group(0)               = ?
[pid 18863] +++ exited with 0 +++
[pid 18862] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18862, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18864
./strace-static-x86_64: Process 18864 attached
[pid 18864] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18864] setpgid(0, 0)               = 0
[pid 18864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18864] write(3, "1000", 4)         = 4
[pid 18864] close(3)                    = 0
[pid 18864] write(1, "executing program\n", 18executing program
) = 18
[pid 18864] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18864] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18864] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18864] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18864] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18864] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18864] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18865]}, 88) = 18865
[pid 18864] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18864] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18864] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18865 attached
 <unfinished ...>
[pid 18865] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18865] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18865] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18865] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18864] <... futex resumed>)        = 0
[pid 18864] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18864] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18865] <... futex resumed>)        = 1
[pid 18865] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18865] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18864] <... futex resumed>)        = 0
[pid 18864] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18864] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18865] <... futex resumed>)        = 1
[pid 18865] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18865] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18864] <... futex resumed>)        = 0
[pid 18864] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18864] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18865] <... futex resumed>)        = 1
[pid 18865] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18865] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18864] <... futex resumed>)        = 0
[pid 18864] exit_group(0)               = ?
[pid 18865] <... futex resumed>)        = ?
[pid 18865] +++ exited with 0 +++
[pid 18864] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18864, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18866
./strace-static-x86_64: Process 18866 attached
[pid 18866] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18866] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18866] setpgid(0, 0)               = 0
[pid 18866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18866] write(3, "1000", 4)         = 4
[pid 18866] close(3)                    = 0
executing program
[pid 18866] write(1, "executing program\n", 18) = 18
[pid 18866] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18866] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18866] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18866] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18866] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18866] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18866] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18867 attached
 => {parent_tid=[18867]}, 88) = 18867
[pid 18866] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18866] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18866] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18867] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18867] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18867] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18867] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18866] <... futex resumed>)        = 0
[pid 18866] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18866] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18867] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18867] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18866] <... futex resumed>)        = 0
[pid 18866] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18866] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18867] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18867] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18866] <... futex resumed>)        = 0
[pid 18866] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18866] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18867] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18867] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18866] <... futex resumed>)        = 0
[pid 18866] exit_group(0)               = ?
[pid 18867] +++ exited with 0 +++
[pid 18866] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18866, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18868
./strace-static-x86_64: Process 18868 attached
[pid 18868] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18868] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18868] setpgid(0, 0)               = 0
[pid 18868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18868] write(3, "1000", 4)         = 4
[pid 18868] close(3)                    = 0
executing program
[pid 18868] write(1, "executing program\n", 18) = 18
[pid 18868] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18868] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18868] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18868] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18868] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18868] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18868] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18869]}, 88) = 18869
./strace-static-x86_64: Process 18869 attached
[pid 18868] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18869] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18868] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18868] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18869] <... set_robust_list resumed>) = 0
[pid 18869] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18868] <... futex resumed>)        = 0
[pid 18869] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18868] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18869] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18869] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18868] <... futex resumed>)        = 0
[pid 18868] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18868] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18869] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18869] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18868] <... futex resumed>)        = 0
[pid 18868] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18868] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18869] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18869] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18868] <... futex resumed>)        = 0
[pid 18868] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18868] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18869] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18869] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18868] <... futex resumed>)        = 0
[pid 18868] exit_group(0)               = ?
[pid 18869] +++ exited with 0 +++
[pid 18868] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18868, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18870 attached
, child_tidptr=0x55557c828690) = 18870
[pid 18870] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18870] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18870] setpgid(0, 0)               = 0
[pid 18870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
executing program
[pid 18870] write(3, "1000", 4)         = 4
[pid 18870] close(3)                    = 0
[pid 18870] write(1, "executing program\n", 18) = 18
[pid 18870] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18870] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18870] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18870] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18870] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18870] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18870] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18871 attached
 => {parent_tid=[18871]}, 88) = 18871
[pid 18870] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18870] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18870] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18871] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18871] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18871] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18871] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18870] <... futex resumed>)        = 0
[pid 18870] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18870] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18871] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18871] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18870] <... futex resumed>)        = 0
[pid 18870] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18870] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18871] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18871] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18871] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18870] <... futex resumed>)        = 0
[pid 18870] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18871] <... futex resumed>)        = 0
[pid 18870] <... futex resumed>)        = 1
[pid 18871] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18870] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18871] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18871] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18870] <... futex resumed>)        = 0
[pid 18871] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18870] exit_group(0 <unfinished ...>
[pid 18871] <... futex resumed>)        = ?
[pid 18870] <... exit_group resumed>)   = ?
[pid 18871] +++ exited with 0 +++
[pid 18870] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18870, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18872 attached
, child_tidptr=0x55557c828690) = 18872
[pid 18872] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18872] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18872] setpgid(0, 0)               = 0
[pid 18872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18872] write(3, "1000", 4)         = 4
[pid 18872] close(3)                    = 0
[pid 18872] write(1, "executing program\n", 18executing program
) = 18
[pid 18872] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18872] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18872] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18872] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18872] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18872] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18872] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18873]}, 88) = 18873
[pid 18872] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18872] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18872] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18873 attached
 <unfinished ...>
[pid 18873] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18873] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18873] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18873] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18872] <... futex resumed>)        = 0
[pid 18872] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18872] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18873] <... futex resumed>)        = 1
[pid 18873] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18873] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18872] <... futex resumed>)        = 0
[pid 18872] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18872] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18873] <... futex resumed>)        = 1
[pid 18873] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18873] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18872] <... futex resumed>)        = 0
[pid 18872] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18872] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18873] <... futex resumed>)        = 1
[pid 18873] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18873] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18872] <... futex resumed>)        = 0
[pid 18872] exit_group(0)               = ?
[pid 18873] <... futex resumed>)        = ?
[pid 18873] +++ exited with 0 +++
[pid 18872] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18872, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18874 attached
, child_tidptr=0x55557c828690) = 18874
[pid 18874] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18874] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18874] setpgid(0, 0)               = 0
[pid 18874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18874] write(3, "1000", 4)         = 4
[pid 18874] close(3)                    = 0
executing program
[pid 18874] write(1, "executing program\n", 18) = 18
[pid 18874] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18874] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18874] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18874] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18874] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18874] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18874] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18875]}, 88) = 18875
./strace-static-x86_64: Process 18875 attached
[pid 18875] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18874] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18875] <... set_robust_list resumed>) = 0
[pid 18875] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18875] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18874] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18874] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18874] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18875] <... futex resumed>)        = 0
[pid 18875] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18875] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18875] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18874] <... futex resumed>)        = 0
[pid 18874] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18874] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18875] <... futex resumed>)        = 0
[pid 18875] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18875] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18874] <... futex resumed>)        = 0
[pid 18874] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18874] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18875] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18875] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18874] <... futex resumed>)        = 0
[pid 18874] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18874] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18875] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18875] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18874] <... futex resumed>)        = 0
[pid 18874] exit_group(0)               = ?
[pid 18875] +++ exited with 0 +++
[pid 18874] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18874, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18876
./strace-static-x86_64: Process 18876 attached
[pid 18876] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18876] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18876] setpgid(0, 0)               = 0
[pid 18876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18876] write(3, "1000", 4)         = 4
[pid 18876] close(3)                    = 0
[pid 18876] write(1, "executing program\n", 18executing program
) = 18
[pid 18876] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18876] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18876] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18876] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18876] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18876] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18876] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18877]}, 88) = 18877
[pid 18876] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18876] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18876] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18877 attached
 <unfinished ...>
[pid 18877] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18877] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18877] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18877] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18876] <... futex resumed>)        = 0
[pid 18876] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18876] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18877] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18877] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18876] <... futex resumed>)        = 0
[pid 18876] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18876] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18877] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18877] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18876] <... futex resumed>)        = 0
[pid 18876] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18876] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18877] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18877] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18876] <... futex resumed>)        = 0
[pid 18876] exit_group(0)               = ?
[pid 18877] +++ exited with 0 +++
[pid 18876] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18876, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18878
./strace-static-x86_64: Process 18878 attached
[pid 18878] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18878] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18878] setpgid(0, 0)               = 0
[pid 18878] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18878] write(3, "1000", 4)         = 4
[pid 18878] close(3executing program
)                    = 0
[pid 18878] write(1, "executing program\n", 18) = 18
[pid 18878] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18878] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18878] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18878] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18878] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18878] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18878] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18879 attached
 => {parent_tid=[18879]}, 88) = 18879
[pid 18878] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18878] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18878] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18879] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18879] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18879] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18879] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18879] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18878] <... futex resumed>)        = 0
[pid 18878] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18879] <... futex resumed>)        = 0
[pid 18878] <... futex resumed>)        = 1
[pid 18879] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18878] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18879] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18879] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18878] <... futex resumed>)        = 0
[pid 18879] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18878] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18879] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18878] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18879] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18879] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18878] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18878] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18879] <... futex resumed>)        = 0
[pid 18878] <... futex resumed>)        = 1
[pid 18879] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18878] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18879] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18879] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18878] <... futex resumed>)        = 0
[pid 18879] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18878] exit_group(0 <unfinished ...>
[pid 18879] <... futex resumed>)        = ?
[pid 18878] <... exit_group resumed>)   = ?
[pid 18879] +++ exited with 0 +++
[pid 18878] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18878, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18880 attached
, child_tidptr=0x55557c828690) = 18880
[pid 18880] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18880] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18880] setpgid(0, 0)               = 0
[pid 18880] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18880] write(3, "1000", 4)         = 4
[pid 18880] close(3executing program
)                    = 0
[pid 18880] write(1, "executing program\n", 18) = 18
[pid 18880] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18880] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18880] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18880] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18880] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18880] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18880] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18881 attached
 => {parent_tid=[18881]}, 88) = 18881
[pid 18880] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18880] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18880] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18881] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18881] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18881] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18881] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18880] <... futex resumed>)        = 0
[pid 18881] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18880] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18881] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18880] <... futex resumed>)        = 0
[pid 18881] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18880] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18881] <... futex resumed>)        = 0
[pid 18880] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18881] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18880] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18881] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18880] <... futex resumed>)        = 0
[pid 18881] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18880] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18881] <... futex resumed>)        = 0
[pid 18880] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18881] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18880] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18881] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18880] <... futex resumed>)        = 0
[pid 18880] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18881] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18880] <... futex resumed>)        = 0
[pid 18880] exit_group(0)               = ?
[pid 18881] +++ exited with 0 +++
[pid 18880] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18880, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18882
./strace-static-x86_64: Process 18882 attached
[pid 18882] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18882] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18882] setpgid(0, 0)               = 0
[pid 18882] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18882] write(3, "1000", 4)         = 4
[pid 18882] close(3)                    = 0
executing program
[pid 18882] write(1, "executing program\n", 18) = 18
[pid 18882] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18882] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18882] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18882] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18882] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18882] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18882] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18883 attached
 => {parent_tid=[18883]}, 88) = 18883
[pid 18883] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18883] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18883] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18882] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18882] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18883] <... futex resumed>)        = 0
[pid 18883] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18882] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18883] <... 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 18883] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18882] <... futex resumed>)        = 0
[pid 18882] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18882] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18883] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18883] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18882] <... futex resumed>)        = 0
[pid 18883] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18882] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18882] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18883] <... futex resumed>)        = 0
[pid 18883] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18883] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18882] <... futex resumed>)        = 0
[pid 18882] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18882] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18883] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18883] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18883] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18882] <... futex resumed>)        = 0
[pid 18882] exit_group(0)               = ?
[pid 18883] <... futex resumed>)        = ?
[pid 18883] +++ exited with 0 +++
[pid 18882] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18882, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18884 attached
, child_tidptr=0x55557c828690) = 18884
[pid 18884] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18884] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18884] setpgid(0, 0)               = 0
[pid 18884] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18884] write(3, "1000", 4)         = 4
[pid 18884] close(3executing program
)                    = 0
[pid 18884] write(1, "executing program\n", 18) = 18
[pid 18884] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18884] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18884] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18884] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18884] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18884] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18884] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18885]}, 88) = 18885
./strace-static-x86_64: Process 18885 attached
[pid 18884] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18884] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18884] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18885] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18885] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18885] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18885] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18884] <... futex resumed>)        = 0
[pid 18884] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18884] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18885] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18885] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18884] <... futex resumed>)        = 0
[pid 18884] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18884] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18885] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18885] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18884] <... futex resumed>)        = 0
[pid 18884] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18884] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18885] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18885] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18885] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18884] <... futex resumed>)        = 0
[pid 18884] exit_group(0)               = ?
[pid 18885] <... futex resumed>)        = ?
[pid 18885] +++ exited with 0 +++
[pid 18884] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18884, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18886
./strace-static-x86_64: Process 18886 attached
[pid 18886] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18886] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18886] setpgid(0, 0)               = 0
[pid 18886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18886] write(3, "1000", 4)         = 4
[pid 18886] close(3executing program
)                    = 0
[pid 18886] write(1, "executing program\n", 18) = 18
[pid 18886] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18886] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18886] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18886] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18886] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18886] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18886] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18887]}, 88) = 18887
[pid 18886] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18886] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18886] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18887 attached
 <unfinished ...>
[pid 18887] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18887] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18887] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18887] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18886] <... futex resumed>)        = 0
[pid 18886] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18886] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18887] <... futex resumed>)        = 1
[pid 18887] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18887] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18886] <... futex resumed>)        = 0
[pid 18886] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18886] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18887] <... futex resumed>)        = 1
[pid 18887] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18887] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18886] <... futex resumed>)        = 0
[pid 18886] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18886] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18887] <... futex resumed>)        = 1
[pid 18887] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18887] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18886] <... futex resumed>)        = 0
[pid 18886] exit_group(0)               = ?
[pid 18887] <... futex resumed>)        = ?
[pid 18887] +++ exited with 0 +++
[pid 18886] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18886, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18888
./strace-static-x86_64: Process 18888 attached
[pid 18888] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18888] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18888] setpgid(0, 0)               = 0
[pid 18888] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18888] write(3, "1000", 4)         = 4
[pid 18888] close(3)                    = 0
executing program
[pid 18888] write(1, "executing program\n", 18) = 18
[pid 18888] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18888] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18888] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18888] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18888] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18888] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18888] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18889 attached
 => {parent_tid=[18889]}, 88) = 18889
[pid 18888] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18888] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18888] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18889] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18889] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18889] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18889] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18888] <... futex resumed>)        = 0
[pid 18888] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18888] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18889] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18889] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18889] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18888] <... futex resumed>)        = 0
[pid 18888] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18888] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18889] <... futex resumed>)        = 0
[pid 18889] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18889] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18889] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18888] <... futex resumed>)        = 0
[pid 18888] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18888] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18889] <... futex resumed>)        = 0
[pid 18889] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18889] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18888] <... futex resumed>)        = 0
[pid 18888] exit_group(0)               = ?
[pid 18889] +++ exited with 0 +++
[pid 18888] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18888, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18890
./strace-static-x86_64: Process 18890 attached
[pid 18890] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18890] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18890] setpgid(0, 0)               = 0
[pid 18890] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18890] write(3, "1000", 4)         = 4
[pid 18890] close(3)                    = 0
[pid 18890] write(1, "executing program\n", 18executing program
) = 18
[pid 18890] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18890] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18890] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18890] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18890] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18890] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18890] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18891]}, 88) = 18891
[pid 18890] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18890] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18890] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18891 attached
 <unfinished ...>
[pid 18891] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18891] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18891] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18891] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18890] <... futex resumed>)        = 0
[pid 18890] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18890] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18891] <... futex resumed>)        = 1
[pid 18891] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18891] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18890] <... futex resumed>)        = 0
[pid 18890] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18890] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18891] <... futex resumed>)        = 1
[pid 18891] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18891] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18890] <... futex resumed>)        = 0
[pid 18890] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18890] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18891] <... futex resumed>)        = 1
[pid 18891] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18891] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18890] <... futex resumed>)        = 0
[pid 18890] exit_group(0)               = ?
[pid 18891] <... futex resumed>)        = ?
[pid 18891] +++ exited with 0 +++
[pid 18890] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18890, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18892
./strace-static-x86_64: Process 18892 attached
[pid 18892] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18892] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18892] setpgid(0, 0)               = 0
[pid 18892] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18892] write(3, "1000", 4)         = 4
[pid 18892] close(3)                    = 0
executing program
[pid 18892] write(1, "executing program\n", 18) = 18
[pid 18892] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18892] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18892] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18892] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18892] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18892] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18892] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18893]}, 88) = 18893
./strace-static-x86_64: Process 18893 attached
[pid 18892] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18892] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18892] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18893] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18893] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18893] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18893] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18892] <... futex resumed>)        = 0
[pid 18892] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18892] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18893] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18893] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18892] <... futex resumed>)        = 0
[pid 18892] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18892] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18893] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18893] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18892] <... futex resumed>)        = 0
[pid 18892] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18892] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18893] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18893] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18892] <... futex resumed>)        = 0
[pid 18892] exit_group(0)               = ?
[pid 18893] +++ exited with 0 +++
[pid 18892] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18892, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18894 attached
 <unfinished ...>
[pid 18894] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18894
[pid 18894] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18894] setpgid(0, 0)               = 0
[pid 18894] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18894] write(3, "1000", 4)         = 4
[pid 18894] close(3)                    = 0
executing program
[pid 18894] write(1, "executing program\n", 18) = 18
[pid 18894] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18894] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18894] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18894] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18894] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18894] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18894] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18895]}, 88) = 18895
[pid 18894] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18894] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18894] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18895 attached
 <unfinished ...>
[pid 18895] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18895] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18895] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18895] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18894] <... futex resumed>)        = 0
[pid 18894] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18894] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18895] <... futex resumed>)        = 1
[pid 18895] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18895] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18894] <... futex resumed>)        = 0
[pid 18894] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18894] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18895] <... futex resumed>)        = 1
[pid 18895] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18895] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18894] <... futex resumed>)        = 0
[pid 18894] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18894] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18895] <... futex resumed>)        = 1
[pid 18895] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18895] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18894] <... futex resumed>)        = 0
[pid 18894] exit_group(0)               = ?
[pid 18895] <... futex resumed>)        = ?
[pid 18895] +++ exited with 0 +++
[pid 18894] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18894, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18896
./strace-static-x86_64: Process 18896 attached
[pid 18896] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18896] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18896] setpgid(0, 0)               = 0
[pid 18896] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18896] write(3, "1000", 4)         = 4
[pid 18896] close(3executing program
)                    = 0
[pid 18896] write(1, "executing program\n", 18) = 18
[pid 18896] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18896] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18896] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18896] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18896] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18896] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18896] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18897]}, 88) = 18897
./strace-static-x86_64: Process 18897 attached
[pid 18896] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18896] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18896] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18897] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18897] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18897] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18897] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18896] <... futex resumed>)        = 0
[pid 18896] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18896] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18897] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18897] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18896] <... futex resumed>)        = 0
[pid 18896] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18896] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18897] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18897] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18896] <... futex resumed>)        = 0
[pid 18896] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18896] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18897] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18897] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18896] <... futex resumed>)        = 0
[pid 18896] exit_group(0)               = ?
[pid 18897] +++ exited with 0 +++
[pid 18896] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18896, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18898 attached
 <unfinished ...>
[pid 18898] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18898] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18898] setpgid(0, 0)               = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18898
[pid 18898] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18898] write(3, "1000", 4)         = 4
[pid 18898] close(3)                    = 0
executing program
[pid 18898] write(1, "executing program\n", 18) = 18
[pid 18898] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18898] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18898] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18898] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18898] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18898] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18898] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18899]}, 88) = 18899
[pid 18898] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18898] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18898] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18899 attached
 <unfinished ...>
[pid 18899] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18899] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18899] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18899] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18898] <... futex resumed>)        = 0
[pid 18898] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18898] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18899] <... futex resumed>)        = 1
[pid 18899] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18899] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18898] <... futex resumed>)        = 0
[pid 18898] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18898] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18899] <... futex resumed>)        = 1
[pid 18899] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18899] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18898] <... futex resumed>)        = 0
[pid 18898] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18898] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18899] <... futex resumed>)        = 1
[pid 18899] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18899] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18898] <... futex resumed>)        = 0
[pid 18898] exit_group(0)               = ?
[pid 18899] <... futex resumed>)        = ?
[pid 18899] +++ exited with 0 +++
[pid 18898] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18898, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18900
./strace-static-x86_64: Process 18900 attached
[pid 18900] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18900] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18900] setpgid(0, 0)               = 0
[pid 18900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18900] write(3, "1000", 4)         = 4
[pid 18900] close(3)                    = 0
executing program
[pid 18900] write(1, "executing program\n", 18) = 18
[pid 18900] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18900] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18900] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18900] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18900] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18900] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18900] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18901 attached
 => {parent_tid=[18901]}, 88) = 18901
[pid 18900] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18900] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18900] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18901] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18901] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18901] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18901] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18900] <... futex resumed>)        = 0
[pid 18900] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18900] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18901] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18901] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18900] <... futex resumed>)        = 0
[pid 18900] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18900] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18901] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18901] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18900] <... futex resumed>)        = 0
[pid 18900] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18900] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18901] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18901] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18900] <... futex resumed>)        = 0
[pid 18900] exit_group(0)               = ?
[pid 18901] +++ exited with 0 +++
[pid 18900] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18900, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18902
./strace-static-x86_64: Process 18902 attached
[pid 18902] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18902] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18902] setpgid(0, 0)               = 0
[pid 18902] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18902] write(3, "1000", 4)         = 4
[pid 18902] close(3)                    = 0
executing program
[pid 18902] write(1, "executing program\n", 18) = 18
[pid 18902] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18902] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18902] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18902] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18902] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18902] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18902] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18903]}, 88) = 18903
[pid 18902] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18902] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18902] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18903 attached
 <unfinished ...>
[pid 18903] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18903] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18903] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18903] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18902] <... futex resumed>)        = 0
[pid 18902] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18902] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18903] <... futex resumed>)        = 1
[pid 18903] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18903] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18902] <... futex resumed>)        = 0
[pid 18902] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18902] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18903] <... futex resumed>)        = 1
[pid 18903] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18903] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18902] <... futex resumed>)        = 0
[pid 18902] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18902] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18903] <... futex resumed>)        = 1
[pid 18903] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18903] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18902] <... futex resumed>)        = 0
[pid 18902] exit_group(0)               = ?
[pid 18903] <... futex resumed>)        = ?
[pid 18903] +++ exited with 0 +++
[pid 18902] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18902, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18904
./strace-static-x86_64: Process 18904 attached
[pid 18904] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18904] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18904] setpgid(0, 0)               = 0
[pid 18904] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18904] write(3, "1000", 4)         = 4
executing program
[pid 18904] close(3)                    = 0
[pid 18904] write(1, "executing program\n", 18) = 18
[pid 18904] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18904] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18904] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18904] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18904] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18904] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18904] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18905 attached
 => {parent_tid=[18905]}, 88) = 18905
[pid 18904] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18904] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18904] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18905] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18905] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18905] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18905] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18904] <... futex resumed>)        = 0
[pid 18904] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18905] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18904] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18905] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18905] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18904] <... futex resumed>)        = 0
[pid 18904] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18904] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18905] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18905] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18904] <... futex resumed>)        = 0
[pid 18904] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18904] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18905] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18905] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18904] <... futex resumed>)        = 0
[pid 18904] exit_group(0)               = ?
[pid 18905] +++ exited with 0 +++
[pid 18904] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18904, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18906
./strace-static-x86_64: Process 18906 attached
[pid 18906] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18906] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18906] setpgid(0, 0)               = 0
[pid 18906] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18906] write(3, "1000", 4)         = 4
[pid 18906] close(3)                    = 0
[pid 18906] write(1, "executing program\n", 18executing program
) = 18
[pid 18906] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18906] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18906] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18906] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18906] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18906] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18906] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18907]}, 88) = 18907
./strace-static-x86_64: Process 18907 attached
[pid 18906] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18906] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18906] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18907] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18907] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18907] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18907] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18906] <... futex resumed>)        = 0
[pid 18906] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18906] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18907] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18907] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18906] <... futex resumed>)        = 0
[pid 18906] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18906] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18907] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18907] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18906] <... futex resumed>)        = 0
[pid 18906] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18906] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18907] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18907] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18906] <... futex resumed>)        = 0
[pid 18906] exit_group(0)               = ?
[pid 18907] +++ exited with 0 +++
[pid 18906] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18906, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18908 attached
, child_tidptr=0x55557c828690) = 18908
[pid 18908] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18908] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18908] setpgid(0, 0)               = 0
[pid 18908] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18908] write(3, "1000", 4)         = 4
[pid 18908] close(3)                    = 0
[pid 18908] write(1, "executing program\n", 18executing program
) = 18
[pid 18908] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18908] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18908] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18908] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18908] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18908] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18908] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18909 attached
 => {parent_tid=[18909]}, 88) = 18909
[pid 18908] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18908] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18908] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18909] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18909] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18909] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18909] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18908] <... futex resumed>)        = 0
[pid 18908] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18908] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18909] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18909] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18908] <... futex resumed>)        = 0
[pid 18908] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18908] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18909] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18909] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18908] <... futex resumed>)        = 0
[pid 18909] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18908] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18909] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18908] <... futex resumed>)        = 0
[pid 18909] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18908] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18909] <... futex resumed>)        = 0
[pid 18908] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18909] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18908] exit_group(0 <unfinished ...>
[pid 18909] <... futex resumed>)        = ?
[pid 18908] <... exit_group resumed>)   = ?
[pid 18909] +++ exited with 0 +++
[pid 18908] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18908, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18910
./strace-static-x86_64: Process 18910 attached
[pid 18910] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18910] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18910] setpgid(0, 0)               = 0
[pid 18910] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18910] write(3, "1000", 4)         = 4
[pid 18910] close(3)                    = 0
[pid 18910] write(1, "executing program\n", 18executing program
) = 18
[pid 18910] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18910] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18910] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18910] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18910] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18910] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18910] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18911 attached
 => {parent_tid=[18911]}, 88) = 18911
[pid 18910] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18910] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18910] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18911] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18911] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18911] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18911] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18910] <... futex resumed>)        = 0
[pid 18911] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18910] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18911] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18910] <... futex resumed>)        = 0
[pid 18911] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18910] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18911] <... futex resumed>)        = 0
[pid 18910] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18911] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18910] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18911] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18910] <... futex resumed>)        = 0
[pid 18911] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18910] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18911] <... futex resumed>)        = 0
[pid 18910] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18911] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18910] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18911] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18910] <... futex resumed>)        = 0
[pid 18911] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18910] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18911] <... futex resumed>)        = 0
[pid 18910] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18911] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18910] exit_group(0 <unfinished ...>
[pid 18911] <... futex resumed>)        = ?
[pid 18910] <... exit_group resumed>)   = ?
[pid 18911] +++ exited with 0 +++
[pid 18910] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18910, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18912
./strace-static-x86_64: Process 18912 attached
[pid 18912] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18912] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18912] setpgid(0, 0)               = 0
[pid 18912] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18912] write(3, "1000", 4executing program
)         = 4
[pid 18912] close(3)                    = 0
[pid 18912] write(1, "executing program\n", 18) = 18
[pid 18912] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18912] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18912] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18912] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18912] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18912] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18912] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18913]}, 88) = 18913
[pid 18912] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18912] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18912] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18913 attached
 <unfinished ...>
[pid 18913] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18913] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18913] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18913] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18912] <... futex resumed>)        = 0
[pid 18912] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18912] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18913] <... futex resumed>)        = 1
[pid 18913] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18913] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18912] <... futex resumed>)        = 0
[pid 18912] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18912] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18913] <... futex resumed>)        = 1
[pid 18913] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18913] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18912] <... futex resumed>)        = 0
[pid 18912] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18912] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18913] <... futex resumed>)        = 1
[pid 18913] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18913] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18912] <... futex resumed>)        = 0
[pid 18912] exit_group(0)               = ?
[pid 18913] <... futex resumed>)        = ?
[pid 18913] +++ exited with 0 +++
[pid 18912] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18912, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18914 attached
, child_tidptr=0x55557c828690) = 18914
[pid 18914] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18914] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18914] setpgid(0, 0)               = 0
[pid 18914] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18914] write(3, "1000", 4)         = 4
[pid 18914] close(3)                    = 0
[pid 18914] write(1, "executing program\n", 18executing program
) = 18
[pid 18914] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18914] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18914] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18914] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18914] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18914] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18914] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18915]}, 88) = 18915
[pid 18914] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18914] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18914] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18915 attached
 <unfinished ...>
[pid 18915] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18915] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18915] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18915] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18914] <... futex resumed>)        = 0
[pid 18914] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18914] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18915] <... futex resumed>)        = 1
[pid 18915] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18915] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18914] <... futex resumed>)        = 0
[pid 18914] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18914] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18915] <... futex resumed>)        = 1
[pid 18915] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18915] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18914] <... futex resumed>)        = 0
[pid 18914] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18914] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18915] <... futex resumed>)        = 1
[pid 18915] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18915] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18914] <... futex resumed>)        = 0
[pid 18914] exit_group(0)               = ?
[pid 18915] <... futex resumed>)        = ?
[pid 18915] +++ exited with 0 +++
[pid 18914] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18914, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18916
./strace-static-x86_64: Process 18916 attached
[pid 18916] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18916] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18916] setpgid(0, 0)               = 0
[pid 18916] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18916] write(3, "1000", 4)         = 4
[pid 18916] close(3)                    = 0
executing program
[pid 18916] write(1, "executing program\n", 18) = 18
[pid 18916] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18916] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18916] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18916] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18916] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18916] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18916] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18917 attached
 => {parent_tid=[18917]}, 88) = 18917
[pid 18916] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18916] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18916] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18917] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18917] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18917] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18917] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18916] <... futex resumed>)        = 0
[pid 18916] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18916] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18917] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18917] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18916] <... futex resumed>)        = 0
[pid 18916] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18916] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18917] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18917] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18916] <... futex resumed>)        = 0
[pid 18916] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18916] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18917] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18917] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18916] <... futex resumed>)        = 0
[pid 18916] exit_group(0)               = ?
[pid 18917] +++ exited with 0 +++
[pid 18916] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18916, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18918
./strace-static-x86_64: Process 18918 attached
[pid 18918] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18918] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18918] setpgid(0, 0)               = 0
[pid 18918] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18918] write(3, "1000", 4)         = 4
[pid 18918] close(3)                    = 0
[pid 18918] write(1, "executing program\n", 18executing program
) = 18
[pid 18918] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18918] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18918] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18918] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18918] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18918] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18918] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18919]}, 88) = 18919
[pid 18918] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18918] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18918] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18919 attached
 <unfinished ...>
[pid 18919] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18919] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18919] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18919] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18918] <... futex resumed>)        = 0
[pid 18918] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18918] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18919] <... futex resumed>)        = 1
[pid 18919] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18919] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18918] <... futex resumed>)        = 0
[pid 18918] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18918] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18919] <... futex resumed>)        = 1
[pid 18919] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18919] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18918] <... futex resumed>)        = 0
[pid 18918] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18918] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18919] <... futex resumed>)        = 1
[pid 18919] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18919] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18918] <... futex resumed>)        = 0
[pid 18918] exit_group(0)               = ?
[pid 18919] <... futex resumed>)        = ?
[pid 18919] +++ exited with 0 +++
[pid 18918] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18918, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18920
./strace-static-x86_64: Process 18920 attached
[pid 18920] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18920] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18920] setpgid(0, 0)               = 0
[pid 18920] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18920] write(3, "1000", 4)         = 4
[pid 18920] close(3)                    = 0
executing program
[pid 18920] write(1, "executing program\n", 18) = 18
[pid 18920] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18920] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18920] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18920] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18920] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18920] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18920] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18921]}, 88) = 18921
./strace-static-x86_64: Process 18921 attached
[pid 18920] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18921] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18920] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18921] <... set_robust_list resumed>) = 0
[pid 18920] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18921] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18920] <... futex resumed>)        = 0
[pid 18920] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18921] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18921] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18920] <... futex resumed>)        = 0
[pid 18920] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18920] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18921] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18921] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18920] <... futex resumed>)        = 0
[pid 18920] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18920] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18921] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18921] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18920] <... futex resumed>)        = 0
[pid 18920] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18920] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18921] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18921] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18920] <... futex resumed>)        = 0
[pid 18920] exit_group(0)               = ?
[pid 18921] +++ exited with 0 +++
[pid 18920] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18920, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18922 attached
, child_tidptr=0x55557c828690) = 18922
[pid 18922] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18922] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18922] setpgid(0, 0)               = 0
[pid 18922] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18922] write(3, "1000", 4)         = 4
[pid 18922] close(3)                    = 0
[pid 18922] write(1, "executing program\n", 18executing program
) = 18
[pid 18922] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18922] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18922] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18922] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18922] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18922] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18922] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18923 attached
 => {parent_tid=[18923]}, 88) = 18923
[pid 18923] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18922] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18923] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18922] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18923] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18922] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18923] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18922] <... futex resumed>)        = 0
[pid 18922] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18923] <... 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 18923] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18922] <... futex resumed>)        = 0
[pid 18922] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18922] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18923] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18923] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18922] <... futex resumed>)        = 0
[pid 18922] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18922] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18923] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18923] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18922] <... futex resumed>)        = 0
[pid 18922] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18922] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18923] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18923] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18922] <... futex resumed>)        = 0
[pid 18922] exit_group(0)               = ?
[pid 18923] +++ exited with 0 +++
[pid 18922] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18922, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18924
./strace-static-x86_64: Process 18924 attached
[pid 18924] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18924] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18924] setpgid(0, 0)               = 0
[pid 18924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18924] write(3, "1000", 4)         = 4
[pid 18924] close(3)                    = 0
[pid 18924] write(1, "executing program\n", 18executing program
) = 18
[pid 18924] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18924] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18924] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18924] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18924] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18924] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18924] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18925]}, 88) = 18925
./strace-static-x86_64: Process 18925 attached
[pid 18924] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18925] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18924] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18925] <... set_robust_list resumed>) = 0
[pid 18924] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18925] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18925] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18924] <... futex resumed>)        = 0
[pid 18924] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18925] <... 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 18925] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18924] <... futex resumed>)        = 0
[pid 18924] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18924] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18925] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18925] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18924] <... futex resumed>)        = 0
[pid 18924] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18924] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18925] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18925] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18924] <... futex resumed>)        = 0
[pid 18924] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18924] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18925] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18925] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18924] <... futex resumed>)        = 0
[pid 18924] exit_group(0)               = ?
[pid 18925] +++ exited with 0 +++
[pid 18924] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18924, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18926
./strace-static-x86_64: Process 18926 attached
[pid 18926] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18926] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18926] setpgid(0, 0)               = 0
[pid 18926] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18926] write(3, "1000", 4)         = 4
[pid 18926] close(3executing program
)                    = 0
[pid 18926] write(1, "executing program\n", 18) = 18
[pid 18926] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18926] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18926] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18926] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18926] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18926] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18926] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18927 attached
 => {parent_tid=[18927]}, 88) = 18927
[pid 18927] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18926] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18927] <... set_robust_list resumed>) = 0
[pid 18926] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18927] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18926] <... futex resumed>)        = 0
[pid 18927] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18926] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18927] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18927] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18926] <... futex resumed>)        = 0
[pid 18926] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18926] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18927] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18927] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18926] <... futex resumed>)        = 0
[pid 18926] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18926] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18927] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18927] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18926] <... futex resumed>)        = 0
[pid 18926] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18926] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18927] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18927] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18926] <... futex resumed>)        = 0
[pid 18926] exit_group(0)               = ?
[pid 18927] +++ exited with 0 +++
[pid 18926] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18926, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18928 attached
, child_tidptr=0x55557c828690) = 18928
[pid 18928] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18928] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18928] setpgid(0, 0)               = 0
[pid 18928] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18928] write(3, "1000", 4)         = 4
[pid 18928] close(3executing program
)                    = 0
[pid 18928] write(1, "executing program\n", 18) = 18
[pid 18928] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18928] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18928] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18928] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18928] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18928] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18928] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18929 attached
 => {parent_tid=[18929]}, 88) = 18929
[pid 18928] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18928] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18928] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18929] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18929] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18929] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18929] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18928] <... futex resumed>)        = 0
[pid 18928] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18928] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18929] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18929] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18928] <... futex resumed>)        = 0
[pid 18928] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18928] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18929] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18929] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18928] <... futex resumed>)        = 0
[pid 18928] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18928] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18929] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18929] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18928] <... futex resumed>)        = 0
[pid 18928] exit_group(0 <unfinished ...>
[pid 18929] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18928] <... exit_group resumed>)   = ?
[pid 18929] <... futex resumed>)        = ?
[pid 18929] +++ exited with 0 +++
[pid 18928] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18928, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18930
./strace-static-x86_64: Process 18930 attached
[pid 18930] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18930] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18930] setpgid(0, 0)               = 0
[pid 18930] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18930] write(3, "1000", 4)         = 4
[pid 18930] close(3)                    = 0
[pid 18930] write(1, "executing program\n", 18executing program
) = 18
[pid 18930] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18930] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18930] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18930] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18930] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18930] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18930] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18931]}, 88) = 18931
[pid 18930] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18930] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18930] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18931 attached
 <unfinished ...>
[pid 18931] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18931] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18931] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18931] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18930] <... futex resumed>)        = 0
[pid 18931] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18930] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18930] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18931] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18931] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18930] <... futex resumed>)        = 0
[pid 18931] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18930] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18930] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18931] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18931] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18931] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18930] <... futex resumed>)        = 0
[pid 18930] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18930] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18931] <... futex resumed>)        = 0
[pid 18931] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18931] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18930] <... futex resumed>)        = 0
[pid 18930] exit_group(0 <unfinished ...>
[pid 18931] <... futex resumed>)        = 1
[pid 18930] <... exit_group resumed>)   = ?
[pid 18931] +++ exited with 0 +++
[pid 18930] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18930, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18932 attached
, child_tidptr=0x55557c828690) = 18932
[pid 18932] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18932] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18932] setpgid(0, 0)               = 0
[pid 18932] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18932] write(3, "1000", 4)         = 4
[pid 18932] close(3)                    = 0
[pid 18932] write(1, "executing program\n", 18executing program
) = 18
[pid 18932] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18932] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18932] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18932] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18932] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18932] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18932] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18933]}, 88) = 18933
[pid 18932] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18932] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18932] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18933 attached
 <unfinished ...>
[pid 18933] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18933] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18933] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18933] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18932] <... futex resumed>)        = 0
[pid 18932] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18932] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18933] <... futex resumed>)        = 1
[pid 18933] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18933] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18932] <... futex resumed>)        = 0
[pid 18932] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18932] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18933] <... futex resumed>)        = 1
[pid 18933] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18933] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18932] <... futex resumed>)        = 0
[pid 18932] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18932] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18933] <... futex resumed>)        = 1
[pid 18933] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18933] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18932] <... futex resumed>)        = 0
[pid 18932] exit_group(0)               = ?
[pid 18933] <... futex resumed>)        = ?
[pid 18933] +++ exited with 0 +++
[pid 18932] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18932, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18934
./strace-static-x86_64: Process 18934 attached
[pid 18934] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18934] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18934] setpgid(0, 0)               = 0
[pid 18934] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18934] write(3, "1000", 4executing program
)         = 4
[pid 18934] close(3)                    = 0
[pid 18934] write(1, "executing program\n", 18) = 18
[pid 18934] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18934] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18934] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18934] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18934] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18934] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18934] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18935 attached
 => {parent_tid=[18935]}, 88) = 18935
[pid 18934] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18934] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18934] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18935] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18935] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18935] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18935] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18935] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18934] <... futex resumed>)        = 0
[pid 18934] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18934] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18935] <... futex resumed>)        = 0
[pid 18935] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18935] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18935] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18934] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18934] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18934] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18935] <... futex resumed>)        = 0
[pid 18935] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18935] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18934] <... futex resumed>)        = 0
[pid 18934] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18934] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18935] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18935] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18934] <... futex resumed>)        = 0
[pid 18934] exit_group(0)               = ?
[pid 18935] +++ exited with 0 +++
[pid 18934] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18934, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18936
./strace-static-x86_64: Process 18936 attached
[pid 18936] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18936] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18936] setpgid(0, 0)               = 0
[pid 18936] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18936] write(3, "1000", 4)         = 4
[pid 18936] close(3)                    = 0
executing program
[pid 18936] write(1, "executing program\n", 18) = 18
[pid 18936] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18936] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18936] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18936] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18936] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18936] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18936] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18937]}, 88) = 18937
./strace-static-x86_64: Process 18937 attached
[pid 18936] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18936] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18936] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18937] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18937] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18937] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18937] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18936] <... futex resumed>)        = 0
[pid 18936] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18936] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18937] <... futex resumed>)        = 1
[pid 18937] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18937] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18936] <... futex resumed>)        = 0
[pid 18936] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18936] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18937] <... futex resumed>)        = 1
[pid 18937] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18937] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18936] <... futex resumed>)        = 0
[pid 18936] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18936] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18937] <... futex resumed>)        = 1
[pid 18937] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18937] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18936] <... futex resumed>)        = 0
[pid 18936] exit_group(0 <unfinished ...>
[pid 18937] <... futex resumed>)        = 1
[pid 18936] <... exit_group resumed>)   = ?
[pid 18937] +++ exited with 0 +++
[pid 18936] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18936, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18938 attached
, child_tidptr=0x55557c828690) = 18938
[pid 18938] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18938] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18938] setpgid(0, 0)               = 0
[pid 18938] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18938] write(3, "1000", 4)         = 4
[pid 18938] close(3)                    = 0
[pid 18938] write(1, "executing program\n", 18executing program
) = 18
[pid 18938] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18938] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18938] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18938] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18938] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18938] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18938] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18939 attached
 <unfinished ...>
[pid 18939] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18939] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18939] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18938] <... clone3 resumed> => {parent_tid=[18939]}, 88) = 18939
[pid 18938] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18938] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18939] <... futex resumed>)        = 0
[pid 18939] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18938] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18939] <... 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 18939] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18938] <... futex resumed>)        = 0
[pid 18938] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18939] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18938] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18939] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18939] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18938] <... futex resumed>)        = 0
[pid 18938] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18938] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18939] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18939] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18938] <... futex resumed>)        = 0
[pid 18938] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18938] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18939] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18939] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18938] <... futex resumed>)        = 0
[pid 18938] exit_group(0 <unfinished ...>
[pid 18939] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL) = ?
[pid 18938] <... exit_group resumed>)   = ?
[pid 18939] +++ exited with 0 +++
[pid 18938] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18938, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18940 attached
 <unfinished ...>
[pid 18940] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18940] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18940] setpgid(0, 0)               = 0
[pid 18940] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18940
[pid 18940] <... openat resumed>)       = 3
[pid 18940] write(3, "1000", 4)         = 4
[pid 18940] close(3executing program
)                    = 0
[pid 18940] write(1, "executing program\n", 18) = 18
[pid 18940] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18940] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18940] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18940] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18940] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18940] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18940] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18941 attached
 => {parent_tid=[18941]}, 88) = 18941
[pid 18941] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18940] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18941] <... set_robust_list resumed>) = 0
[pid 18940] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18941] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18940] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18941] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18940] <... futex resumed>)        = 0
[pid 18941] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18940] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18941] <... 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 18941] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18940] <... futex resumed>)        = 0
[pid 18940] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18940] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18941] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18941] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18940] <... futex resumed>)        = 0
[pid 18940] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18940] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18941] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18941] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18940] <... futex resumed>)        = 0
[pid 18940] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18940] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18941] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18941] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18940] <... futex resumed>)        = 0
[pid 18940] exit_group(0)               = ?
[pid 18941] +++ exited with 0 +++
[pid 18940] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18940, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18942
./strace-static-x86_64: Process 18942 attached
[pid 18942] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18942] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18942] setpgid(0, 0)               = 0
[pid 18942] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18942] write(3, "1000", 4)         = 4
[pid 18942] close(3)                    = 0
executing program
[pid 18942] write(1, "executing program\n", 18) = 18
[pid 18942] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18942] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18942] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18942] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18942] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18942] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18942] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18943 attached
 => {parent_tid=[18943]}, 88) = 18943
[pid 18942] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18942] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18942] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18943] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18943] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18943] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18943] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18942] <... futex resumed>)        = 0
[pid 18943] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18942] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18943] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18942] <... futex resumed>)        = 0
[pid 18943] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18942] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18943] <... futex resumed>)        = 0
[pid 18942] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18943] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18942] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18943] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18942] <... futex resumed>)        = 0
[pid 18943] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18942] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18943] <... futex resumed>)        = 0
[pid 18942] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18943] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18942] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18943] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18942] <... futex resumed>)        = 0
[pid 18943] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18942] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18943] <... futex resumed>)        = 0
[pid 18942] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18943] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18942] exit_group(0 <unfinished ...>
[pid 18943] <... futex resumed>)        = ?
[pid 18942] <... exit_group resumed>)   = ?
[pid 18943] +++ exited with 0 +++
[pid 18942] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18942, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18944 attached
 <unfinished ...>
[pid 18944] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18944] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18944] setpgid(0, 0)               = 0
[pid 18944] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18944] write(3, "1000", 4 <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18944
[pid 18944] <... write resumed>)        = 4
[pid 18944] close(3)                    = 0
executing program
[pid 18944] write(1, "executing program\n", 18) = 18
[pid 18944] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18944] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18944] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18944] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18944] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18944] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18944] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18945]}, 88) = 18945
[pid 18944] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18944] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18944] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18945 attached
 <unfinished ...>
[pid 18945] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18945] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18945] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18945] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18944] <... futex resumed>)        = 0
[pid 18944] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18944] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18945] <... futex resumed>)        = 1
[pid 18945] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18945] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18944] <... futex resumed>)        = 0
[pid 18944] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18944] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18945] <... futex resumed>)        = 1
[pid 18945] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18945] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18944] <... futex resumed>)        = 0
[pid 18944] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18944] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18945] <... futex resumed>)        = 1
[pid 18945] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18945] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18944] <... futex resumed>)        = 0
[pid 18944] exit_group(0)               = ?
[pid 18945] <... futex resumed>)        = ?
[pid 18945] +++ exited with 0 +++
[pid 18944] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18944, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18946
./strace-static-x86_64: Process 18946 attached
[pid 18946] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18946] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18946] setpgid(0, 0)               = 0
[pid 18946] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18946] write(3, "1000", 4)         = 4
[pid 18946] close(3)                    = 0
executing program
[pid 18946] write(1, "executing program\n", 18) = 18
[pid 18946] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18946] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18946] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18946] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18946] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18946] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18946] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18947]}, 88) = 18947
./strace-static-x86_64: Process 18947 attached
[pid 18946] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18946] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18946] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18947] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18947] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18947] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18947] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18947] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18946] <... futex resumed>)        = 0
[pid 18946] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18946] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18947] <... futex resumed>)        = 0
[pid 18947] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18947] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18947] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18946] <... futex resumed>)        = 0
[pid 18946] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18946] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18947] <... futex resumed>)        = 0
[pid 18947] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18947] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18946] <... futex resumed>)        = 0
[pid 18946] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18946] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18947] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18947] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18946] <... futex resumed>)        = 0
[pid 18946] exit_group(0)               = ?
[pid 18947] +++ exited with 0 +++
[pid 18946] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18946, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18948
./strace-static-x86_64: Process 18948 attached
[pid 18948] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18948] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18948] setpgid(0, 0)               = 0
[pid 18948] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18948] write(3, "1000", 4)         = 4
[pid 18948] close(3)                    = 0
executing program
[pid 18948] write(1, "executing program\n", 18) = 18
[pid 18948] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18948] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18948] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18948] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18948] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18948] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18948] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18949 attached
 => {parent_tid=[18949]}, 88) = 18949
[pid 18949] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18948] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18949] <... set_robust_list resumed>) = 0
[pid 18948] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18949] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18948] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18949] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18948] <... futex resumed>)        = 0
[pid 18949] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18948] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18949] <... 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 18949] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18948] <... futex resumed>)        = 0
[pid 18948] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18948] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18949] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18949] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18948] <... futex resumed>)        = 0
[pid 18948] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18948] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18949] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18949] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18948] <... futex resumed>)        = 0
[pid 18948] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18948] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18949] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18949] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18948] <... futex resumed>)        = 0
[pid 18948] exit_group(0 <unfinished ...>
[pid 18949] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18948] <... exit_group resumed>)   = ?
[pid 18949] <... futex resumed>)        = ?
[pid 18949] +++ exited with 0 +++
[pid 18948] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18948, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18950
./strace-static-x86_64: Process 18950 attached
[pid 18950] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18950] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18950] setpgid(0, 0)               = 0
[pid 18950] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18950] write(3, "1000", 4)         = 4
[pid 18950] close(3)                    = 0
[pid 18950] write(1, "executing program\n", 18executing program
) = 18
[pid 18950] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18950] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18950] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18950] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18950] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18950] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18950] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18951 attached
 => {parent_tid=[18951]}, 88) = 18951
[pid 18951] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18950] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18951] <... set_robust_list resumed>) = 0
[pid 18950] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18951] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18950] <... futex resumed>)        = 0
[pid 18951] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18950] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18951] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18951] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18950] <... futex resumed>)        = 0
[pid 18950] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18950] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18951] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18951] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18950] <... futex resumed>)        = 0
[pid 18950] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18950] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18951] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18951] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18950] <... futex resumed>)        = 0
[pid 18950] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18950] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18951] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18951] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18950] <... futex resumed>)        = 0
[pid 18950] exit_group(0)               = ?
[pid 18951] +++ exited with 0 +++
[pid 18950] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18950, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18952 attached
 <unfinished ...>
[pid 18952] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18952
[pid 18952] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18952] setpgid(0, 0)               = 0
[pid 18952] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18952] write(3, "1000", 4)         = 4
[pid 18952] close(3executing program
)                    = 0
[pid 18952] write(1, "executing program\n", 18) = 18
[pid 18952] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18952] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18952] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18952] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18952] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18952] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18952] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18953]}, 88) = 18953
./strace-static-x86_64: Process 18953 attached
[pid 18953] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18952] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18953] <... set_robust_list resumed>) = 0
[pid 18952] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18953] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18952] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18953] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18952] <... futex resumed>)        = 0
[pid 18953] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18953] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18953] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18952] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 18952] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18953] <... futex resumed>)        = 0
[pid 18953] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18953] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18952] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18953] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18952] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18952] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18953] <... futex resumed>)        = 0
[pid 18953] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18952] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18953] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18952] <... futex resumed>)        = 0
[pid 18952] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18952] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18953] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18953] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18952] <... futex resumed>)        = 0
[pid 18952] exit_group(0)               = ?
[pid 18953] +++ exited with 0 +++
[pid 18952] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18952, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18954 attached
 <unfinished ...>
[pid 18954] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18954] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18954] setpgid(0, 0)               = 0
[pid 18954] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18954
[pid 18954] <... openat resumed>)       = 3
executing program
[pid 18954] write(3, "1000", 4)         = 4
[pid 18954] close(3)                    = 0
[pid 18954] write(1, "executing program\n", 18) = 18
[pid 18954] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18954] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18954] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18954] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18954] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18954] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18954] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18955 attached
 => {parent_tid=[18955]}, 88) = 18955
[pid 18954] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18954] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18954] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18955] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18955] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18955] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18955] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18954] <... futex resumed>)        = 0
[pid 18955] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18954] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18955] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18954] <... futex resumed>)        = 0
[pid 18955] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18954] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18955] <... futex resumed>)        = 0
[pid 18954] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18955] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18954] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18955] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18954] <... futex resumed>)        = 0
[pid 18955] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18954] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18955] <... futex resumed>)        = 0
[pid 18954] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18955] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18954] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18955] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18954] <... futex resumed>)        = 0
[pid 18955] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18954] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18955] <... futex resumed>)        = 0
[pid 18954] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18955] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18954] exit_group(0 <unfinished ...>
[pid 18955] <... futex resumed>)        = ?
[pid 18954] <... exit_group resumed>)   = ?
[pid 18955] +++ exited with 0 +++
[pid 18954] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18954, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18956 attached
, child_tidptr=0x55557c828690) = 18956
[pid 18956] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18956] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18956] setpgid(0, 0)               = 0
[pid 18956] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18956] write(3, "1000", 4)         = 4
[pid 18956] close(3executing program
)                    = 0
[pid 18956] write(1, "executing program\n", 18) = 18
[pid 18956] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18956] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18956] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18956] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18956] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18956] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18956] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18957]}, 88) = 18957
[pid 18956] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18956] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18956] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18957 attached
 <unfinished ...>
[pid 18957] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18957] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18957] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18957] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18956] <... futex resumed>)        = 0
[pid 18957] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18956] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18956] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18957] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18957] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18956] <... futex resumed>)        = 0
[pid 18956] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18956] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18957] <... futex resumed>)        = 1
[pid 18957] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18957] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18956] <... futex resumed>)        = 0
[pid 18956] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18956] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18957] <... futex resumed>)        = 1
[pid 18957] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18957] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18956] <... futex resumed>)        = 0
[pid 18956] exit_group(0)               = ?
[pid 18957] <... futex resumed>)        = ?
[pid 18957] +++ exited with 0 +++
[pid 18956] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18956, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18958
./strace-static-x86_64: Process 18958 attached
[pid 18958] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18958] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18958] setpgid(0, 0)               = 0
[pid 18958] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18958] write(3, "1000", 4)         = 4
[pid 18958] close(3)                    = 0
[pid 18958] write(1, "executing program\n", 18executing program
) = 18
[pid 18958] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18958] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18958] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18958] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18958] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18958] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18958] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18959 attached
 => {parent_tid=[18959]}, 88) = 18959
[pid 18958] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18958] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18958] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18959] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18959] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18959] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18959] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18958] <... futex resumed>)        = 0
[pid 18958] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18958] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18959] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18959] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18958] <... futex resumed>)        = 0
[pid 18958] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18958] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18959] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18959] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18958] <... futex resumed>)        = 0
[pid 18958] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18958] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18959] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18959] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18959] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18958] <... futex resumed>)        = 0
[pid 18958] exit_group(0)               = ?
[pid 18959] <... futex resumed>)        = ?
[pid 18959] +++ exited with 0 +++
[pid 18958] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18958, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18960
./strace-static-x86_64: Process 18960 attached
[pid 18960] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18960] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18960] setpgid(0, 0)               = 0
[pid 18960] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18960] write(3, "1000", 4)         = 4
[pid 18960] close(3)                    = 0
executing program
[pid 18960] write(1, "executing program\n", 18) = 18
[pid 18960] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18960] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18960] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18960] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18960] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18960] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18960] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18961 attached
 => {parent_tid=[18961]}, 88) = 18961
[pid 18960] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18960] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18960] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18961] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18961] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18961] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18961] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18960] <... futex resumed>)        = 0
[pid 18960] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18960] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18961] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18961] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18960] <... futex resumed>)        = 0
[pid 18960] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18960] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18961] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18961] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18960] <... futex resumed>)        = 0
[pid 18960] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18960] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18961] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18961] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18960] <... futex resumed>)        = 0
[pid 18960] exit_group(0)               = ?
[pid 18961] +++ exited with 0 +++
[pid 18960] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18960, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18962
./strace-static-x86_64: Process 18962 attached
[pid 18962] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18962] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18962] setpgid(0, 0)               = 0
[pid 18962] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18962] write(3, "1000", 4)         = 4
[pid 18962] close(3)                    = 0
executing program
[pid 18962] write(1, "executing program\n", 18) = 18
[pid 18962] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18962] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18962] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18962] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18962] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18962] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18962] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18963 attached
 => {parent_tid=[18963]}, 88) = 18963
[pid 18963] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18962] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18963] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18962] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18963] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18962] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18963] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18962] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18963] <... 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 18963] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18962] <... futex resumed>)        = 0
[pid 18963] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18962] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18963] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18962] <... futex resumed>)        = 0
[pid 18963] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18962] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18963] <... futex resumed>)        = 0
[pid 18962] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18963] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18962] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18963] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18962] <... futex resumed>)        = 0
[pid 18963] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18962] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18963] <... futex resumed>)        = 0
[pid 18962] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18963] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18962] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18963] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18962] <... futex resumed>)        = 0
[pid 18963] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18962] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18963] <... futex resumed>)        = 0
[pid 18962] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18963] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18962] exit_group(0 <unfinished ...>
[pid 18963] <... futex resumed>)        = ?
[pid 18962] <... exit_group resumed>)   = ?
[pid 18963] +++ exited with 0 +++
[pid 18962] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18962, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18964
./strace-static-x86_64: Process 18964 attached
[pid 18964] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18964] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18964] setpgid(0, 0)               = 0
[pid 18964] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18964] write(3, "1000", 4)         = 4
[pid 18964] close(3)                    = 0
[pid 18964] write(1, "executing program\n", 18executing program
) = 18
[pid 18964] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18964] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18964] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18964] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18964] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18964] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18964] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18965 attached
 => {parent_tid=[18965]}, 88) = 18965
[pid 18964] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18964] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18964] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18965] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18965] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18965] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18965] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18964] <... futex resumed>)        = 0
[pid 18964] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18964] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18965] <... futex resumed>)        = 1
[pid 18965] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18965] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18964] <... futex resumed>)        = 0
[pid 18964] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18964] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18965] <... futex resumed>)        = 1
[pid 18965] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18965] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18964] <... futex resumed>)        = 0
[pid 18964] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18964] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18965] <... futex resumed>)        = 1
[pid 18965] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18965] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18964] <... futex resumed>)        = 0
[pid 18964] exit_group(0)               = ?
[pid 18965] <... futex resumed>)        = ?
[pid 18965] +++ exited with 0 +++
[pid 18964] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18964, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18966
./strace-static-x86_64: Process 18966 attached
[pid 18966] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18966] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18966] setpgid(0, 0)               = 0
[pid 18966] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18966] write(3, "1000", 4)         = 4
[pid 18966] close(3)                    = 0
[pid 18966] write(1, "executing program\n", 18executing program
) = 18
[pid 18966] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18966] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18966] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18966] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18966] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18966] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18966] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18967]}, 88) = 18967
./strace-static-x86_64: Process 18967 attached
[pid 18966] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18966] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18966] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18967] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18967] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18967] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18967] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18966] <... futex resumed>)        = 0
[pid 18966] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18966] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18967] <... futex resumed>)        = 1
[pid 18967] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18967] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18966] <... futex resumed>)        = 0
[pid 18966] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18966] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18967] <... futex resumed>)        = 1
[pid 18967] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18967] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18966] <... futex resumed>)        = 0
[pid 18966] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18966] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18967] <... futex resumed>)        = 1
[pid 18967] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18967] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18966] <... futex resumed>)        = 0
[pid 18966] exit_group(0)               = ?
[pid 18967] <... futex resumed>)        = ?
[pid 18967] +++ exited with 0 +++
[pid 18966] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18966, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18968
./strace-static-x86_64: Process 18968 attached
[pid 18968] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18968] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18968] setpgid(0, 0)               = 0
[pid 18968] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18968] write(3, "1000", 4executing program
)         = 4
[pid 18968] close(3)                    = 0
[pid 18968] write(1, "executing program\n", 18) = 18
[pid 18968] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18968] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18968] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18968] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18968] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18968] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18968] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18969 attached
 => {parent_tid=[18969]}, 88) = 18969
[pid 18968] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18968] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18968] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18969] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18969] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18969] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18969] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18968] <... futex resumed>)        = 0
[pid 18968] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18968] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18969] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18969] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18968] <... futex resumed>)        = 0
[pid 18968] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18968] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18969] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18969] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18968] <... futex resumed>)        = 0
[pid 18968] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18968] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18969] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18969] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18968] <... futex resumed>)        = 0
[pid 18968] exit_group(0 <unfinished ...>
[pid 18969] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18968] <... exit_group resumed>)   = ?
[pid 18969] <... futex resumed>)        = ?
[pid 18969] +++ exited with 0 +++
[pid 18968] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18968, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18970 attached
, child_tidptr=0x55557c828690) = 18970
[pid 18970] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18970] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18970] setpgid(0, 0)               = 0
[pid 18970] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18970] write(3, "1000", 4)         = 4
[pid 18970] close(3executing program
)                    = 0
[pid 18970] write(1, "executing program\n", 18) = 18
[pid 18970] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18970] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18970] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18970] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18970] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18970] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18970] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18971]}, 88) = 18971
./strace-static-x86_64: Process 18971 attached
[pid 18971] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18970] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18971] <... set_robust_list resumed>) = 0
[pid 18971] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18970] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18971] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18970] <... futex resumed>)        = 0
[pid 18971] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18970] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18971] <... 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 18971] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18970] <... futex resumed>)        = 0
[pid 18970] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18970] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18971] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18971] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18970] <... futex resumed>)        = 0
[pid 18970] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18970] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18971] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18971] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18970] <... futex resumed>)        = 0
[pid 18970] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18970] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18971] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18971] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18970] <... futex resumed>)        = 0
[pid 18970] exit_group(0)               = ?
[pid 18971] +++ exited with 0 +++
[pid 18970] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18970, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18972
./strace-static-x86_64: Process 18972 attached
[pid 18972] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18972] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18972] setpgid(0, 0)               = 0
[pid 18972] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18972] write(3, "1000", 4)         = 4
[pid 18972] close(3)                    = 0
executing program
[pid 18972] write(1, "executing program\n", 18) = 18
[pid 18972] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18972] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18972] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18972] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18972] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18972] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18972] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18973]}, 88) = 18973
./strace-static-x86_64: Process 18973 attached
[pid 18972] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18972] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18972] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18973] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18973] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18973] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18973] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18972] <... futex resumed>)        = 0
[pid 18972] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18972] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18973] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18973] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18972] <... futex resumed>)        = 0
[pid 18972] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18972] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18973] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18973] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18972] <... futex resumed>)        = 0
[pid 18972] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18972] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18973] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18973] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18972] <... futex resumed>)        = 0
[pid 18972] exit_group(0)               = ?
[pid 18973] +++ exited with 0 +++
[pid 18972] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18972, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18974 attached
, child_tidptr=0x55557c828690) = 18974
[pid 18974] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18974] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18974] setpgid(0, 0)               = 0
[pid 18974] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18974] write(3, "1000", 4)         = 4
[pid 18974] close(3executing program
)                    = 0
[pid 18974] write(1, "executing program\n", 18) = 18
[pid 18974] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18974] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18974] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18974] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18974] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18974] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18974] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18975 attached
 => {parent_tid=[18975]}, 88) = 18975
[pid 18974] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18974] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18974] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18975] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18975] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18975] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18975] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18974] <... futex resumed>)        = 0
[pid 18974] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18974] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18975] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18975] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18974] <... futex resumed>)        = 0
[pid 18974] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18974] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18975] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18975] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18974] <... futex resumed>)        = 0
[pid 18974] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18974] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18975] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18975] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18974] <... futex resumed>)        = 0
[pid 18974] exit_group(0)               = ?
[pid 18975] +++ exited with 0 +++
[pid 18974] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18974, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18976
./strace-static-x86_64: Process 18976 attached
[pid 18976] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18976] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18976] setpgid(0, 0)               = 0
[pid 18976] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18976] write(3, "1000", 4)         = 4
[pid 18976] close(3executing program
)                    = 0
[pid 18976] write(1, "executing program\n", 18) = 18
[pid 18976] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18976] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18976] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18976] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18976] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18976] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18976] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18977 attached
 => {parent_tid=[18977]}, 88) = 18977
[pid 18976] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18976] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18976] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18977] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18977] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18977] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18977] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18976] <... futex resumed>)        = 0
[pid 18976] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18976] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18977] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18977] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18976] <... futex resumed>)        = 0
[pid 18976] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18976] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18977] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18977] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18976] <... futex resumed>)        = 0
[pid 18976] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18976] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18977] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18977] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18976] <... futex resumed>)        = 0
[pid 18976] exit_group(0)               = ?
[pid 18977] +++ exited with 0 +++
[pid 18976] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18976, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18978
./strace-static-x86_64: Process 18978 attached
[pid 18978] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18978] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18978] setpgid(0, 0)               = 0
[pid 18978] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18978] write(3, "1000", 4)         = 4
[pid 18978] close(3)                    = 0
[pid 18978] write(1, "executing program\n", 18executing program
) = 18
[pid 18978] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18978] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18978] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18978] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18978] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18978] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18978] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18979 attached
 => {parent_tid=[18979]}, 88) = 18979
[pid 18979] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18978] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18978] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18978] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18979] <... set_robust_list resumed>) = 0
[pid 18979] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18979] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18979] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18978] <... futex resumed>)        = 0
[pid 18979] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18978] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18979] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18978] <... futex resumed>)        = 0
[pid 18979] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18978] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18979] <... futex resumed>)        = 0
[pid 18978] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18979] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18978] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18979] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18978] <... futex resumed>)        = 0
[pid 18979] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18978] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18979] <... futex resumed>)        = 0
[pid 18978] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18979] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18978] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18979] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18978] <... futex resumed>)        = 0
[pid 18979] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18978] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18979] <... futex resumed>)        = 0
[pid 18978] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18979] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18978] exit_group(0 <unfinished ...>
[pid 18979] <... futex resumed>)        = ?
[pid 18978] <... exit_group resumed>)   = ?
[pid 18979] +++ exited with 0 +++
[pid 18978] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18978, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18980
./strace-static-x86_64: Process 18980 attached
[pid 18980] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18980] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18980] setpgid(0, 0)               = 0
[pid 18980] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18980] write(3, "1000", 4)         = 4
[pid 18980] close(3executing program
)                    = 0
[pid 18980] write(1, "executing program\n", 18) = 18
[pid 18980] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18980] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18980] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18980] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18980] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18980] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18980] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18981 attached
 => {parent_tid=[18981]}, 88) = 18981
[pid 18980] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18980] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18980] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18981] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18981] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18981] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18981] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18980] <... futex resumed>)        = 0
[pid 18981] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18980] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18981] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18980] <... futex resumed>)        = 0
[pid 18981] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18980] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18981] <... futex resumed>)        = 0
[pid 18980] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18981] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18980] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18981] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18980] <... futex resumed>)        = 0
[pid 18981] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18980] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18981] <... futex resumed>)        = 0
[pid 18980] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18981] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18980] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18981] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18980] <... futex resumed>)        = 0
[pid 18980] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18981] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18980] <... futex resumed>)        = 0
[pid 18981] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18980] exit_group(0 <unfinished ...>
[pid 18981] <... futex resumed>)        = ?
[pid 18980] <... exit_group resumed>)   = ?
[pid 18981] +++ exited with 0 +++
[pid 18980] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18980, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18982
./strace-static-x86_64: Process 18982 attached
[pid 18982] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18982] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18982] setpgid(0, 0)               = 0
[pid 18982] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18982] write(3, "1000", 4)         = 4
[pid 18982] close(3)                    = 0
executing program
[pid 18982] write(1, "executing program\n", 18) = 18
[pid 18982] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18982] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18982] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18982] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18982] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18982] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18982] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18983 attached
 => {parent_tid=[18983]}, 88) = 18983
[pid 18982] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18983] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18982] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18982] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18982] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18983] <... set_robust_list resumed>) = 0
[pid 18983] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18983] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18983] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18983] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18982] <... futex resumed>)        = 0
[pid 18982] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18983] <... futex resumed>)        = 0
[pid 18983] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18983] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18983] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18982] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 18982] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18983] <... futex resumed>)        = 0
[pid 18983] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18982] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18983] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18983] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18983] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18982] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18982] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18983] <... futex resumed>)        = 0
[pid 18983] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18983] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18983] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18982] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 18982] exit_group(0)               = ?
[pid 18983] <... futex resumed>)        = ?
[pid 18983] +++ exited with 0 +++
[pid 18982] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18982, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18984
./strace-static-x86_64: Process 18984 attached
[pid 18984] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18984] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18984] setpgid(0, 0)               = 0
[pid 18984] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18984] write(3, "1000", 4)         = 4
[pid 18984] close(3)                    = 0
[pid 18984] write(1, "executing program\n", 18executing program
) = 18
[pid 18984] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18984] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18984] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18984] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18984] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18984] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18984] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18985]}, 88) = 18985
./strace-static-x86_64: Process 18985 attached
[pid 18984] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18985] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18984] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18985] <... set_robust_list resumed>) = 0
[pid 18984] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18985] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18984] <... futex resumed>)        = 0
[pid 18985] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18984] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18985] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18985] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18984] <... futex resumed>)        = 0
[pid 18984] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18984] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18985] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18985] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18984] <... futex resumed>)        = 0
[pid 18984] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18984] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18985] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18985] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18984] <... futex resumed>)        = 0
[pid 18984] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18984] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18985] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18985] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18985] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18984] <... futex resumed>)        = 0
[pid 18984] exit_group(0)               = ?
[pid 18985] <... futex resumed>)        = ?
[pid 18985] +++ exited with 0 +++
[pid 18984] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18984, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18986 attached
 <unfinished ...>
[pid 18986] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 18986
[pid 18986] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18986] setpgid(0, 0)               = 0
[pid 18986] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18986] write(3, "1000", 4)         = 4
executing program
[pid 18986] close(3)                    = 0
[pid 18986] write(1, "executing program\n", 18) = 18
[pid 18986] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18986] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18986] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18986] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18986] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18986] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18986] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18987]}, 88) = 18987
./strace-static-x86_64: Process 18987 attached
[pid 18987] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18986] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18987] <... set_robust_list resumed>) = 0
[pid 18987] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18986] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18987] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18986] <... futex resumed>)        = 0
[pid 18987] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 18986] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18987] <... 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 18987] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18986] <... futex resumed>)        = 0
[pid 18986] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18986] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18987] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18987] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18986] <... futex resumed>)        = 0
[pid 18986] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18986] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18987] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18987] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18986] <... futex resumed>)        = 0
[pid 18986] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18986] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18987] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18987] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18986] <... futex resumed>)        = 0
[pid 18986] exit_group(0)               = ?
[pid 18987] +++ exited with 0 +++
[pid 18986] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18986, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18988 attached
, child_tidptr=0x55557c828690) = 18988
[pid 18988] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18988] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18988] setpgid(0, 0)               = 0
[pid 18988] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18988] write(3, "1000", 4)         = 4
[pid 18988] close(3)                    = 0
[pid 18988] write(1, "executing program\n", 18executing program
) = 18
[pid 18988] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18988] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18988] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18988] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18988] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18988] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18988] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18989 attached
 => {parent_tid=[18989]}, 88) = 18989
[pid 18988] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18988] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18988] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18989] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18989] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18989] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18989] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18988] <... futex resumed>)        = 0
[pid 18989] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18988] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18989] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18988] <... futex resumed>)        = 0
[pid 18989] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18988] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18989] <... futex resumed>)        = 0
[pid 18988] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18989] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 18988] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18989] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 18988] <... futex resumed>)        = 0
[pid 18989] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18988] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18989] <... futex resumed>)        = 0
[pid 18988] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18989] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 18988] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18989] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 18988] <... futex resumed>)        = 0
[pid 18989] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18988] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18989] <... futex resumed>)        = 0
[pid 18988] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 18989] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18988] exit_group(0 <unfinished ...>
[pid 18989] <... futex resumed>)        = ?
[pid 18988] <... exit_group resumed>)   = ?
[pid 18989] +++ exited with 0 +++
[pid 18988] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18988, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18990
./strace-static-x86_64: Process 18990 attached
[pid 18990] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18990] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18990] setpgid(0, 0)               = 0
[pid 18990] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18990] write(3, "1000", 4)         = 4
[pid 18990] close(3executing program
)                    = 0
[pid 18990] write(1, "executing program\n", 18) = 18
[pid 18990] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18990] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18990] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18990] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18990] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18990] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18990] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18991]}, 88) = 18991
./strace-static-x86_64: Process 18991 attached
[pid 18990] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18990] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18990] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18991] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18991] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18991] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18991] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18991] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18990] <... futex resumed>)        = 0
[pid 18990] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18990] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18991] <... futex resumed>)        = 0
[pid 18991] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18991] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18990] <... futex resumed>)        = 0
[pid 18990] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18990] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18991] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18991] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18991] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18990] <... futex resumed>)        = 0
[pid 18990] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18990] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18991] <... futex resumed>)        = 0
[pid 18991] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18991] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18990] <... futex resumed>)        = 0
[pid 18990] exit_group(0)               = ?
[pid 18991] +++ exited with 0 +++
[pid 18990] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18990, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18992 attached
, child_tidptr=0x55557c828690) = 18992
[pid 18992] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18992] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18992] setpgid(0, 0)               = 0
[pid 18992] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18992] write(3, "1000", 4)         = 4
[pid 18992] close(3)                    = 0
executing program
[pid 18992] write(1, "executing program\n", 18) = 18
[pid 18992] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18992] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18992] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18992] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18992] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18992] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18992] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18993]}, 88) = 18993
[pid 18992] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18992] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18992] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18993 attached
 <unfinished ...>
[pid 18993] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18993] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18993] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18993] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18992] <... futex resumed>)        = 0
[pid 18992] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18992] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18993] <... futex resumed>)        = 1
[pid 18993] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18993] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18992] <... futex resumed>)        = 0
[pid 18992] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18992] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18993] <... futex resumed>)        = 1
[pid 18993] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18993] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18992] <... futex resumed>)        = 0
[pid 18992] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18992] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18993] <... futex resumed>)        = 1
[pid 18993] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18993] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18992] <... futex resumed>)        = 0
[pid 18992] exit_group(0)               = ?
[pid 18993] <... futex resumed>)        = ?
[pid 18993] +++ exited with 0 +++
[pid 18992] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18992, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18994
./strace-static-x86_64: Process 18994 attached
[pid 18994] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18994] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18994] setpgid(0, 0)               = 0
[pid 18994] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18994] write(3, "1000", 4)         = 4
[pid 18994] close(3)                    = 0
[pid 18994] write(1, "executing program\n", 18executing program
) = 18
[pid 18994] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18994] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18994] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18994] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18994] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18994] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18994] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18995]}, 88) = 18995
[pid 18994] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18994] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18994] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18995 attached
 <unfinished ...>
[pid 18995] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18995] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18995] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18995] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18994] <... futex resumed>)        = 0
[pid 18995] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 18994] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18994] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18995] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 18995] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18994] <... futex resumed>)        = 0
[pid 18994] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18994] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18995] <... futex resumed>)        = 1
[pid 18995] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18995] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18994] <... futex resumed>)        = 0
[pid 18995] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18994] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18994] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18995] <... futex resumed>)        = 0
[pid 18995] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18995] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18994] <... futex resumed>)        = 0
[pid 18994] exit_group(0)               = ?
[pid 18995] <... futex resumed>)        = ?
[pid 18995] +++ exited with 0 +++
[pid 18994] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18994, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18996
./strace-static-x86_64: Process 18996 attached
[pid 18996] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18996] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18996] setpgid(0, 0)               = 0
[pid 18996] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18996] write(3, "1000", 4)         = 4
[pid 18996] close(3executing program
)                    = 0
[pid 18996] write(1, "executing program\n", 18) = 18
[pid 18996] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18996] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18996] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18996] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18996] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18996] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18996] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 18997 attached
 => {parent_tid=[18997]}, 88) = 18997
[pid 18997] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 18996] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18997] <... set_robust_list resumed>) = 0
[pid 18996] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 18997] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 18996] <... futex resumed>)        = 0
[pid 18997] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 18996] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18997] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18997] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18996] <... futex resumed>)        = 0
[pid 18996] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18996] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18997] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18997] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18996] <... futex resumed>)        = 0
[pid 18996] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18996] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18997] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18997] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18996] <... futex resumed>)        = 0
[pid 18996] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18996] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18997] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18997] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18996] <... futex resumed>)        = 0
[pid 18996] exit_group(0)               = ?
[pid 18997] +++ exited with 0 +++
[pid 18996] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18996, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 18998
./strace-static-x86_64: Process 18998 attached
[pid 18998] set_robust_list(0x55557c8286a0, 24) = 0
[pid 18998] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18998] setpgid(0, 0)               = 0
[pid 18998] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18998] write(3, "1000", 4)         = 4
[pid 18998] close(3)                    = 0
[pid 18998] write(1, "executing program\n", 18executing program
) = 18
[pid 18998] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18998] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 18998] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 18998] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 18998] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 18998] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 18998] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[18999]}, 88) = 18999
[pid 18998] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18998] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18998] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 18999 attached
 <unfinished ...>
[pid 18999] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 18999] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 18999] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 18999] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18999] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18998] <... futex resumed>)        = 0
[pid 18998] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18999] <... futex resumed>)        = 0
[pid 18998] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18999] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 18999] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18998] <... futex resumed>)        = 0
[pid 18999] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 18998] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18998] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18999] <... futex resumed>)        = 0
[pid 18999] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 18999] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18998] <... futex resumed>)        = 0
[pid 18998] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 18998] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 18999] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 18999] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 18998] <... futex resumed>)        = 0
[pid 18998] exit_group(0)               = ?
[pid 18999] +++ exited with 0 +++
[pid 18998] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18998, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19000 attached
, child_tidptr=0x55557c828690) = 19000
[pid 19000] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19000] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19000] setpgid(0, 0)               = 0
[pid 19000] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19000] write(3, "1000", 4)         = 4
[pid 19000] close(3)                    = 0
executing program
[pid 19000] write(1, "executing program\n", 18) = 18
[pid 19000] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19000] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19000] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19000] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19000] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19000] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19000] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19001 attached
 => {parent_tid=[19001]}, 88) = 19001
[pid 19000] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19000] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19000] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19001] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19001] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19001] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19001] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19000] <... futex resumed>)        = 0
[pid 19000] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19000] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19001] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19001] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19000] <... futex resumed>)        = 0
[pid 19000] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19000] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19001] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19001] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19000] <... futex resumed>)        = 0
[pid 19001] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19000] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19001] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19000] <... futex resumed>)        = 0
[pid 19001] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19000] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19001] <... futex resumed>)        = 0
[pid 19000] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19001] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19000] exit_group(0 <unfinished ...>
[pid 19001] <... futex resumed>)        = ?
[pid 19000] <... exit_group resumed>)   = ?
[pid 19001] +++ exited with 0 +++
[pid 19000] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19000, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19002 attached
, child_tidptr=0x55557c828690) = 19002
[pid 19002] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19002] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19002] setpgid(0, 0)               = 0
[pid 19002] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19002] write(3, "1000", 4)         = 4
[pid 19002] close(3)                    = 0
executing program
[pid 19002] write(1, "executing program\n", 18) = 18
[pid 19002] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19002] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19002] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19002] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19002] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19002] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19002] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19003]}, 88) = 19003
[pid 19002] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19002] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19002] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19003 attached
 <unfinished ...>
[pid 19003] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19003] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19003] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19003] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19003] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19002] <... futex resumed>)        = 0
[pid 19002] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19003] <... futex resumed>)        = 0
[pid 19002] <... futex resumed>)        = 1
[pid 19003] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19002] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19003] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19003] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19002] <... futex resumed>)        = 0
[pid 19003] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19002] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19003] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19002] <... futex resumed>)        = 0
[pid 19003] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19002] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19003] <... futex resumed>)        = 0
[pid 19002] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19003] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19002] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19003] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19002] <... futex resumed>)        = 0
[pid 19003] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19002] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19003] <... futex resumed>)        = 0
[pid 19002] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19003] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19002] exit_group(0 <unfinished ...>
[pid 19003] <... futex resumed>)        = ?
[pid 19002] <... exit_group resumed>)   = ?
[pid 19003] +++ exited with 0 +++
[pid 19002] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19002, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19004
./strace-static-x86_64: Process 19004 attached
[pid 19004] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19004] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19004] setpgid(0, 0)               = 0
[pid 19004] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19004] write(3, "1000", 4)         = 4
[pid 19004] close(3)                    = 0
[pid 19004] write(1, "executing program\n", 18executing program
) = 18
[pid 19004] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19004] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19004] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19004] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19004] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19004] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19004] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19005]}, 88) = 19005
./strace-static-x86_64: Process 19005 attached
[pid 19005] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19005] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19005] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19004] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19004] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19005] <... futex resumed>)        = 0
[pid 19004] <... futex resumed>)        = 1
[pid 19005] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19004] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19005] <... 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 19005] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19005] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19004] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19004] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19005] <... futex resumed>)        = 0
[pid 19004] <... futex resumed>)        = 1
[pid 19005] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19004] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19005] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19005] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19004] <... futex resumed>)        = 0
[pid 19005] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19004] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19005] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19004] <... futex resumed>)        = 0
[pid 19005] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19004] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19005] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19005] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19004] <... futex resumed>)        = 0
[pid 19005] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19004] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19005] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19004] <... futex resumed>)        = 0
[pid 19005] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19004] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19005] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19005] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19004] <... futex resumed>)        = 0
[pid 19005] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19004] exit_group(0 <unfinished ...>
[pid 19005] <... futex resumed>)        = ?
[pid 19004] <... exit_group resumed>)   = ?
[pid 19005] +++ exited with 0 +++
[pid 19004] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19004, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19006 attached
, child_tidptr=0x55557c828690) = 19006
[pid 19006] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19006] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19006] setpgid(0, 0)               = 0
[pid 19006] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19006] write(3, "1000", 4)         = 4
[pid 19006] close(3)                    = 0
executing program
[pid 19006] write(1, "executing program\n", 18) = 18
[pid 19006] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19006] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19006] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19006] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19006] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19006] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19006] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19007]}, 88) = 19007
./strace-static-x86_64: Process 19007 attached
[pid 19007] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19006] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19007] <... set_robust_list resumed>) = 0
[pid 19006] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19007] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19006] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19007] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19006] <... futex resumed>)        = 0
[pid 19007] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19006] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19007] <... 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 19007] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19006] <... futex resumed>)        = 0
[pid 19007] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19006] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19007] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19006] <... futex resumed>)        = 0
[pid 19007] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19006] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19007] <... futex resumed>)        = 0
[pid 19006] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19007] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19006] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19007] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19006] <... futex resumed>)        = 0
[pid 19007] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19006] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19007] <... futex resumed>)        = 0
[pid 19006] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19007] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19006] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19007] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19006] <... futex resumed>)        = 0
[pid 19007] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19006] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19007] <... futex resumed>)        = 0
[pid 19006] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19007] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19006] exit_group(0 <unfinished ...>
[pid 19007] <... futex resumed>)        = ?
[pid 19006] <... exit_group resumed>)   = ?
[pid 19007] +++ exited with 0 +++
[pid 19006] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19006, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19008
./strace-static-x86_64: Process 19008 attached
[pid 19008] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19008] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19008] setpgid(0, 0)               = 0
[pid 19008] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19008] write(3, "1000", 4)         = 4
[pid 19008] close(3)                    = 0
executing program
[pid 19008] write(1, "executing program\n", 18) = 18
[pid 19008] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19008] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19008] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19008] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19008] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19008] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19008] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19009]}, 88) = 19009
./strace-static-x86_64: Process 19009 attached
[pid 19008] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19008] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19008] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19009] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19009] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19009] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19009] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19008] <... futex resumed>)        = 0
[pid 19009] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19008] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19009] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19008] <... futex resumed>)        = 0
[pid 19009] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19008] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19009] <... futex resumed>)        = 0
[pid 19008] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19009] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19008] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19009] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19008] <... futex resumed>)        = 0
[pid 19009] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19008] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19009] <... futex resumed>)        = 0
[pid 19008] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19009] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19008] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19009] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19008] <... futex resumed>)        = 0
[pid 19009] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19008] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19009] <... futex resumed>)        = 0
[pid 19008] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19009] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19008] exit_group(0 <unfinished ...>
[pid 19009] <... futex resumed>)        = ?
[pid 19008] <... exit_group resumed>)   = ?
[pid 19009] +++ exited with 0 +++
[pid 19008] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19008, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19010
./strace-static-x86_64: Process 19010 attached
[pid 19010] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19010] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19010] setpgid(0, 0)               = 0
[pid 19010] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19010] write(3, "1000", 4)         = 4
[pid 19010] close(3executing program
)                    = 0
[pid 19010] write(1, "executing program\n", 18) = 18
[pid 19010] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19010] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19010] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19010] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19010] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19010] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19010] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19011]}, 88) = 19011
[pid 19010] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19010] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19010] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19011 attached
 <unfinished ...>
[pid 19011] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19011] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19011] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19011] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19010] <... futex resumed>)        = 0
[pid 19010] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19010] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19011] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19011] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19010] <... futex resumed>)        = 0
[pid 19010] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19010] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19011] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19011] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19010] <... futex resumed>)        = 0
[pid 19010] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19010] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19011] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19011] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19010] <... futex resumed>)        = 0
[pid 19010] exit_group(0)               = ?
[pid 19011] +++ exited with 0 +++
[pid 19010] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19010, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19012
./strace-static-x86_64: Process 19012 attached
[pid 19012] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19012] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19012] setpgid(0, 0)               = 0
[pid 19012] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19012] write(3, "1000", 4)         = 4
[pid 19012] close(3executing program
)                    = 0
[pid 19012] write(1, "executing program\n", 18) = 18
[pid 19012] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19012] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19012] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19012] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19012] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19012] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19012] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19013 attached
 => {parent_tid=[19013]}, 88) = 19013
[pid 19012] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19012] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19012] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19013] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19013] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19013] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19013] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19012] <... futex resumed>)        = 0
[pid 19012] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19012] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19013] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19013] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19012] <... futex resumed>)        = 0
[pid 19012] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19012] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19013] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19013] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19012] <... futex resumed>)        = 0
[pid 19012] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19012] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19013] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19013] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19013] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19012] <... futex resumed>)        = 0
[pid 19012] exit_group(0)               = ?
[pid 19013] <... futex resumed>)        = ?
[pid 19013] +++ exited with 0 +++
[pid 19012] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19012, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19014 attached
, child_tidptr=0x55557c828690) = 19014
[pid 19014] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19014] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19014] setpgid(0, 0)               = 0
[pid 19014] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program
) = 3
[pid 19014] write(3, "1000", 4)         = 4
[pid 19014] close(3)                    = 0
[pid 19014] write(1, "executing program\n", 18) = 18
[pid 19014] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19014] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19014] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19014] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19014] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19014] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19014] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19015 attached
 => {parent_tid=[19015]}, 88) = 19015
[pid 19014] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19014] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19014] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19015] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19015] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19015] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19015] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19014] <... futex resumed>)        = 0
[pid 19014] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19014] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19015] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19015] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19014] <... futex resumed>)        = 0
[pid 19014] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19014] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19015] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19015] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19014] <... futex resumed>)        = 0
[pid 19014] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19014] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19015] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19015] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19014] <... futex resumed>)        = 0
[pid 19014] exit_group(0 <unfinished ...>
[pid 19015] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19014] <... exit_group resumed>)   = ?
[pid 19015] <... futex resumed>)        = ?
[pid 19015] +++ exited with 0 +++
[pid 19014] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19014, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19016
./strace-static-x86_64: Process 19016 attached
[pid 19016] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19016] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19016] setpgid(0, 0)               = 0
[pid 19016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19016] write(3, "1000", 4)         = 4
[pid 19016] close(3)                    = 0
executing program
[pid 19016] write(1, "executing program\n", 18) = 18
[pid 19016] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19016] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19016] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19016] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19016] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19016] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19016] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19017]}, 88) = 19017
./strace-static-x86_64: Process 19017 attached
[pid 19016] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19016] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19016] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19017] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19017] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19017] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19017] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19016] <... futex resumed>)        = 0
[pid 19016] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19016] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19017] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19017] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19016] <... futex resumed>)        = 0
[pid 19016] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19016] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19017] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19017] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19016] <... futex resumed>)        = 0
[pid 19016] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19016] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19017] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19017] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19016] <... futex resumed>)        = 0
[pid 19016] exit_group(0)               = ?
[pid 19017] +++ exited with 0 +++
[pid 19016] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19016, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19018
./strace-static-x86_64: Process 19018 attached
[pid 19018] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19018] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19018] setpgid(0, 0)               = 0
[pid 19018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19018] write(3, "1000", 4)         = 4
[pid 19018] close(3)                    = 0
[pid 19018] write(1, "executing program\n", 18executing program
) = 18
[pid 19018] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19018] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19018] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19018] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19018] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19018] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19018] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19019 attached
 => {parent_tid=[19019]}, 88) = 19019
[pid 19018] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19018] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19018] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19019] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19019] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19019] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19019] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19018] <... futex resumed>)        = 0
[pid 19018] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19018] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19019] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19019] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19018] <... futex resumed>)        = 0
[pid 19018] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19018] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19019] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19019] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19018] <... futex resumed>)        = 0
[pid 19018] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19018] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19019] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19019] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19018] <... futex resumed>)        = 0
[pid 19018] exit_group(0)               = ?
[pid 19019] +++ exited with 0 +++
[pid 19018] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19018, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19020
./strace-static-x86_64: Process 19020 attached
[pid 19020] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19020] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19020] setpgid(0, 0)               = 0
[pid 19020] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19020] write(3, "1000", 4)         = 4
[pid 19020] close(3)                    = 0
[pid 19020] write(1, "executing program\n", 18executing program
) = 18
[pid 19020] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19020] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19020] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19020] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19020] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19020] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19020] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19021 attached
 => {parent_tid=[19021]}, 88) = 19021
[pid 19020] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19020] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19020] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19021] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19021] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19021] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19021] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19020] <... futex resumed>)        = 0
[pid 19020] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19020] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19021] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19021] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19020] <... futex resumed>)        = 0
[pid 19020] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19020] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19021] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19021] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19020] <... futex resumed>)        = 0
[pid 19020] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19020] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19021] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19021] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19020] <... futex resumed>)        = 0
[pid 19020] exit_group(0)               = ?
[pid 19021] +++ exited with 0 +++
[pid 19020] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19020, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19022
./strace-static-x86_64: Process 19022 attached
[pid 19022] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19022] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19022] setpgid(0, 0)               = 0
[pid 19022] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19022] write(3, "1000", 4)         = 4
[pid 19022] close(3)                    = 0
[pid 19022] write(1, "executing program\n", 18executing program
) = 18
[pid 19022] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19022] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19022] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19022] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19022] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19022] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19022] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19023]}, 88) = 19023
./strace-static-x86_64: Process 19023 attached
[pid 19023] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19023] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19023] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19022] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19022] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19023] <... futex resumed>)        = 0
[pid 19023] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19022] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19023] <... 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 19023] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19022] <... futex resumed>)        = 0
[pid 19022] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19023] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19022] <... futex resumed>)        = 0
[pid 19023] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19022] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19023] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19022] <... futex resumed>)        = 0
[pid 19022] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19022] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19023] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19023] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19022] <... futex resumed>)        = 0
[pid 19022] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19022] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19023] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19023] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19022] <... futex resumed>)        = 0
[pid 19022] exit_group(0)               = ?
[pid 19023] +++ exited with 0 +++
[pid 19022] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19022, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19024
./strace-static-x86_64: Process 19024 attached
[pid 19024] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19024] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19024] setpgid(0, 0)               = 0
[pid 19024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19024] write(3, "1000", 4)         = 4
[pid 19024] close(3executing program
)                    = 0
[pid 19024] write(1, "executing program\n", 18) = 18
[pid 19024] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19024] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19024] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19024] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19024] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19024] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19024] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19025 attached
 => {parent_tid=[19025]}, 88) = 19025
[pid 19025] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19024] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19025] <... set_robust_list resumed>) = 0
[pid 19024] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19025] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19024] <... futex resumed>)        = 0
[pid 19025] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19024] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19025] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19025] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19024] <... futex resumed>)        = 0
[pid 19024] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19024] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19025] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19025] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19024] <... futex resumed>)        = 0
[pid 19024] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19024] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19025] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19025] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19024] <... futex resumed>)        = 0
[pid 19024] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19024] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19025] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19025] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19024] <... futex resumed>)        = 0
[pid 19024] exit_group(0)               = ?
[pid 19025] +++ exited with 0 +++
[pid 19024] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19024, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19026
./strace-static-x86_64: Process 19026 attached
[pid 19026] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19026] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19026] setpgid(0, 0)               = 0
[pid 19026] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19026] write(3, "1000", 4)         = 4
[pid 19026] close(3)                    = 0
executing program
[pid 19026] write(1, "executing program\n", 18) = 18
[pid 19026] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19026] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19026] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19026] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19026] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19026] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19026] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19027]}, 88) = 19027
[pid 19026] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19026] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19026] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19027 attached
 <unfinished ...>
[pid 19027] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19027] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19027] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19027] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19026] <... futex resumed>)        = 0
[pid 19026] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19026] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19027] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19027] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19026] <... futex resumed>)        = 0
[pid 19026] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19026] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19027] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19027] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19026] <... futex resumed>)        = 0
[pid 19026] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19026] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19027] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19027] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19026] <... futex resumed>)        = 0
[pid 19026] exit_group(0)               = ?
[pid 19027] +++ exited with 0 +++
[pid 19026] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19026, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19028
./strace-static-x86_64: Process 19028 attached
[pid 19028] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19028] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19028] setpgid(0, 0)               = 0
[pid 19028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19028] write(3, "1000", 4)         = 4
[pid 19028] close(3)                    = 0
executing program
[pid 19028] write(1, "executing program\n", 18) = 18
[pid 19028] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19028] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19028] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19028] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19028] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19028] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19028] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19029 attached
 => {parent_tid=[19029]}, 88) = 19029
[pid 19028] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19028] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19028] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19029] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19029] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19029] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19029] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19028] <... futex resumed>)        = 0
[pid 19028] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19028] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19029] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19029] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19028] <... futex resumed>)        = 0
[pid 19028] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19028] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19029] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19029] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19028] <... futex resumed>)        = 0
[pid 19028] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19028] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19029] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19029] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19028] <... futex resumed>)        = 0
[pid 19028] exit_group(0)               = ?
[pid 19029] +++ exited with 0 +++
[pid 19028] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19028, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19030
./strace-static-x86_64: Process 19030 attached
[pid 19030] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19030] setpgid(0, 0)               = 0
[pid 19030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19030] write(3, "1000", 4)         = 4
executing program
[pid 19030] close(3)                    = 0
[pid 19030] write(1, "executing program\n", 18) = 18
[pid 19030] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19030] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19030] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19030] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19030] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19030] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19030] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19031]}, 88) = 19031
[pid 19030] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19030] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19030] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19031 attached
 <unfinished ...>
[pid 19031] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19031] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19031] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19031] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19030] <... futex resumed>)        = 0
[pid 19030] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19030] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19031] <... futex resumed>)        = 1
[pid 19031] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19031] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19030] <... futex resumed>)        = 0
[pid 19030] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19030] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19031] <... futex resumed>)        = 1
[pid 19031] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19031] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19030] <... futex resumed>)        = 0
[pid 19030] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19030] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19031] <... futex resumed>)        = 1
[pid 19031] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19031] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19030] <... futex resumed>)        = 0
[pid 19030] exit_group(0)               = ?
[pid 19031] <... futex resumed>)        = ?
[pid 19031] +++ exited with 0 +++
[pid 19030] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19030, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19032
./strace-static-x86_64: Process 19032 attached
[pid 19032] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19032] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19032] setpgid(0, 0)               = 0
[pid 19032] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19032] write(3, "1000", 4)         = 4
[pid 19032] close(3)                    = 0
executing program
[pid 19032] write(1, "executing program\n", 18) = 18
[pid 19032] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19032] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19032] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19032] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19032] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19032] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19032] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19033 attached
 => {parent_tid=[19033]}, 88) = 19033
[pid 19032] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19032] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19032] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19033] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19033] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19033] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19033] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19032] <... futex resumed>)        = 0
[pid 19032] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19032] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19033] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19033] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19032] <... futex resumed>)        = 0
[pid 19032] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19032] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19033] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19033] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19032] <... futex resumed>)        = 0
[pid 19032] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19032] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19033] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19033] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19032] <... futex resumed>)        = 0
[pid 19032] exit_group(0)               = ?
[pid 19033] +++ exited with 0 +++
[pid 19032] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19032, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19034
./strace-static-x86_64: Process 19034 attached
[pid 19034] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19034] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19034] setpgid(0, 0)               = 0
[pid 19034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19034] write(3, "1000", 4executing program
)         = 4
[pid 19034] close(3)                    = 0
[pid 19034] write(1, "executing program\n", 18) = 18
[pid 19034] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19034] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19034] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19034] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19034] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19034] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19034] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19035 attached
 => {parent_tid=[19035]}, 88) = 19035
[pid 19034] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19035] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19035] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19035] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19034] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19034] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19035] <... futex resumed>)        = 0
[pid 19035] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19034] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19035] <... 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 19035] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19034] <... futex resumed>)        = 0
[pid 19034] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19034] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19035] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19035] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19035] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19034] <... futex resumed>)        = 0
[pid 19034] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19034] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19035] <... futex resumed>)        = 0
[pid 19035] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19035] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19034] <... futex resumed>)        = 0
[pid 19034] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19034] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19035] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19035] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19034] <... futex resumed>)        = 0
[pid 19034] exit_group(0)               = ?
[pid 19035] +++ exited with 0 +++
[pid 19034] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19034, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19036
./strace-static-x86_64: Process 19036 attached
[pid 19036] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19036] setpgid(0, 0)               = 0
[pid 19036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19036] write(3, "1000", 4)         = 4
[pid 19036] close(3)                    = 0
executing program
[pid 19036] write(1, "executing program\n", 18) = 18
[pid 19036] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19036] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19036] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19036] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19036] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19036] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19036] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19037 attached
 => {parent_tid=[19037]}, 88) = 19037
[pid 19036] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19036] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19036] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19037] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19037] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19037] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19037] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19036] <... futex resumed>)        = 0
[pid 19037] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19036] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19037] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19036] <... futex resumed>)        = 0
[pid 19037] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19036] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19037] <... futex resumed>)        = 0
[pid 19036] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19037] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19036] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19037] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19036] <... futex resumed>)        = 0
[pid 19037] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19036] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19037] <... futex resumed>)        = 0
[pid 19036] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19037] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19036] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19037] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19036] <... futex resumed>)        = 0
[pid 19037] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19036] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19037] <... futex resumed>)        = 0
[pid 19036] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19037] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19036] exit_group(0 <unfinished ...>
[pid 19037] <... futex resumed>)        = ?
[pid 19036] <... exit_group resumed>)   = ?
[pid 19037] +++ exited with 0 +++
[pid 19036] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19036, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19038 attached
, child_tidptr=0x55557c828690) = 19038
[pid 19038] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19038] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19038] setpgid(0, 0)               = 0
[pid 19038] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19038] write(3, "1000", 4)         = 4
[pid 19038] close(3)                    = 0
[pid 19038] write(1, "executing program\n", 18executing program
) = 18
[pid 19038] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19038] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19038] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19038] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19038] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19038] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19038] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19039 attached
 => {parent_tid=[19039]}, 88) = 19039
[pid 19038] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19038] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19038] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19039] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19039] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19039] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19039] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19038] <... futex resumed>)        = 0
[pid 19039] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19038] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19039] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19038] <... futex resumed>)        = 0
[pid 19039] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19038] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19039] <... futex resumed>)        = 0
[pid 19038] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19039] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19038] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19039] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19038] <... futex resumed>)        = 0
[pid 19039] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19038] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19039] <... futex resumed>)        = 0
[pid 19038] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19039] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19038] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19039] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19038] <... futex resumed>)        = 0
[pid 19038] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19039] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19038] <... futex resumed>)        = 0
[pid 19039] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19038] exit_group(0 <unfinished ...>
[pid 19039] <... futex resumed>)        = ?
[pid 19038] <... exit_group resumed>)   = ?
[pid 19039] +++ exited with 0 +++
[pid 19038] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19038, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19040 attached
, child_tidptr=0x55557c828690) = 19040
[pid 19040] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19040] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19040] setpgid(0, 0)               = 0
[pid 19040] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19040] write(3, "1000", 4)         = 4
[pid 19040] close(3)                    = 0
executing program
[pid 19040] write(1, "executing program\n", 18) = 18
[pid 19040] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19040] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19040] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19040] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19040] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19040] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19040] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19041 attached
 => {parent_tid=[19041]}, 88) = 19041
[pid 19040] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19040] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19040] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19041] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19041] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19041] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19041] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19040] <... futex resumed>)        = 0
[pid 19040] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19040] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19041] <... futex resumed>)        = 1
[pid 19041] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19041] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19040] <... futex resumed>)        = 0
[pid 19040] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19040] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19041] <... futex resumed>)        = 1
[pid 19041] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19041] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19040] <... futex resumed>)        = 0
[pid 19040] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19040] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19041] <... futex resumed>)        = 1
[pid 19041] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19041] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19040] <... futex resumed>)        = 0
[pid 19040] exit_group(0)               = ?
[pid 19041] <... futex resumed>)        = ?
[pid 19041] +++ exited with 0 +++
[pid 19040] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19040, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19042 attached
, child_tidptr=0x55557c828690) = 19042
[pid 19042] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19042] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19042] setpgid(0, 0)               = 0
[pid 19042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19042] write(3, "1000", 4)         = 4
[pid 19042] close(3)                    = 0
executing program
[pid 19042] write(1, "executing program\n", 18) = 18
[pid 19042] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19042] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19042] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19042] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19042] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19042] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19042] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19043]}, 88) = 19043
[pid 19042] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19042] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19042] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19043 attached
 <unfinished ...>
[pid 19043] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19043] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19043] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19043] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19042] <... futex resumed>)        = 0
[pid 19042] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19042] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19043] <... futex resumed>)        = 1
[pid 19043] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19043] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19042] <... futex resumed>)        = 0
[pid 19042] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19042] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19043] <... futex resumed>)        = 1
[pid 19043] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19043] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19042] <... futex resumed>)        = 0
[pid 19042] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19042] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19043] <... futex resumed>)        = 1
[pid 19043] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19043] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19042] <... futex resumed>)        = 0
[pid 19042] exit_group(0)               = ?
[pid 19043] <... futex resumed>)        = ?
[pid 19043] +++ exited with 0 +++
[pid 19042] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19042, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19044
./strace-static-x86_64: Process 19044 attached
[pid 19044] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19044] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19044] setpgid(0, 0)               = 0
[pid 19044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19044] write(3, "1000", 4)         = 4
[pid 19044] close(3)                    = 0
[pid 19044] write(1, "executing program\n", 18executing program
) = 18
[pid 19044] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19044] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19044] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19044] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19044] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19044] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19044] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19045 attached
 => {parent_tid=[19045]}, 88) = 19045
[pid 19045] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19044] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19045] <... set_robust_list resumed>) = 0
[pid 19044] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19045] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19044] <... futex resumed>)        = 0
[pid 19045] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19044] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19045] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19045] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19044] <... futex resumed>)        = 0
[pid 19044] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19044] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19045] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19045] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19044] <... futex resumed>)        = 0
[pid 19044] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19044] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19045] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19045] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19044] <... futex resumed>)        = 0
[pid 19044] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19044] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19045] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19045] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19044] <... futex resumed>)        = 0
[pid 19044] exit_group(0)               = ?
[pid 19045] +++ exited with 0 +++
[pid 19044] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19044, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19046
./strace-static-x86_64: Process 19046 attached
[pid 19046] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19046] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19046] setpgid(0, 0)               = 0
[pid 19046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19046] write(3, "1000", 4)         = 4
[pid 19046] close(3)                    = 0
[pid 19046] write(1, "executing program\n", 18executing program
) = 18
[pid 19046] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19046] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19046] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19046] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19046] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19046] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19046] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19047]}, 88) = 19047
[pid 19046] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19046] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 19047 attached
) = 0
[pid 19047] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19047] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19047] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19047] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19047] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19046] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19046] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19047] <... futex resumed>)        = 0
[pid 19047] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19046] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19047] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19047] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19046] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19046] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19047] <... futex resumed>)        = 0
[pid 19047] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19046] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19047] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19047] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19046] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19046] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19047] <... futex resumed>)        = 0
[pid 19046] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19047] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19047] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19047] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19046] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19046] exit_group(0)               = ?
[pid 19047] <... futex resumed>)        = ?
[pid 19047] +++ exited with 0 +++
[pid 19046] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19046, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19048
./strace-static-x86_64: Process 19048 attached
[pid 19048] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19048] setpgid(0, 0)               = 0
[pid 19048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19048] write(3, "1000", 4)         = 4
executing program
[pid 19048] close(3)                    = 0
[pid 19048] write(1, "executing program\n", 18) = 18
[pid 19048] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19048] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19048] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19048] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19048] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19048] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19048] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19049]}, 88) = 19049
./strace-static-x86_64: Process 19049 attached
[pid 19048] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19048] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19048] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19049] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19049] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19049] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19049] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19048] <... futex resumed>)        = 0
[pid 19048] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19048] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19049] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19049] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19048] <... futex resumed>)        = 0
[pid 19048] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19048] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19049] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19049] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19048] <... futex resumed>)        = 0
[pid 19048] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19048] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19049] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19049] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19048] <... futex resumed>)        = 0
[pid 19048] exit_group(0)               = ?
[pid 19049] +++ exited with 0 +++
[pid 19048] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19048, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19050 attached
 <unfinished ...>
[pid 19050] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19050] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19050] setpgid(0, 0)               = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19050
[pid 19050] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19050] write(3, "1000", 4)         = 4
[pid 19050] close(3)                    = 0
executing program
[pid 19050] write(1, "executing program\n", 18) = 18
[pid 19050] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19050] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19050] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19050] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19050] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19050] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19050] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19051 attached
 => {parent_tid=[19051]}, 88) = 19051
[pid 19051] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19051] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19051] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19050] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19050] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19051] <... futex resumed>)        = 0
[pid 19051] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19050] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19051] <... 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 19051] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19050] <... futex resumed>)        = 0
[pid 19050] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19051] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19050] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19051] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19051] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19050] <... futex resumed>)        = 0
[pid 19050] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19050] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19051] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19051] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19050] <... futex resumed>)        = 0
[pid 19050] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19050] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19051] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19051] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19050] <... futex resumed>)        = 0
[pid 19050] exit_group(0)               = ?
[pid 19051] +++ exited with 0 +++
[pid 19050] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19050, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19052 attached
, child_tidptr=0x55557c828690) = 19052
[pid 19052] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19052] setpgid(0, 0)               = 0
[pid 19052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19052] write(3, "1000", 4)         = 4
[pid 19052] close(3)                    = 0
[pid 19052] write(1, "executing program\n", 18executing program
) = 18
[pid 19052] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19052] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19052] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19052] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19052] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19052] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19052] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19053]}, 88) = 19053
./strace-static-x86_64: Process 19053 attached
[pid 19053] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19052] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19053] <... set_robust_list resumed>) = 0
[pid 19052] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19053] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19052] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19053] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19052] <... futex resumed>)        = 0
[pid 19053] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19052] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19053] <... 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 19053] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19052] <... futex resumed>)        = 0
[pid 19053] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19052] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19053] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19052] <... futex resumed>)        = 0
[pid 19053] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19052] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19053] <... futex resumed>)        = 0
[pid 19052] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19053] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19052] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19053] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19052] <... futex resumed>)        = 0
[pid 19053] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19052] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19053] <... futex resumed>)        = 0
[pid 19052] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19053] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19052] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19053] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19052] <... futex resumed>)        = 0
[pid 19053] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19052] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19053] <... futex resumed>)        = 0
[pid 19052] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19053] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19052] exit_group(0 <unfinished ...>
[pid 19053] <... futex resumed>)        = ?
[pid 19052] <... exit_group resumed>)   = ?
[pid 19053] +++ exited with 0 +++
[pid 19052] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19052, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19054
./strace-static-x86_64: Process 19054 attached
[pid 19054] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19054] setpgid(0, 0)               = 0
[pid 19054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19054] write(3, "1000", 4)         = 4
[pid 19054] close(3)                    = 0
[pid 19054] write(1, "executing program\n", 18executing program
) = 18
[pid 19054] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19054] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19054] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19054] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19054] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19054] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19054] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19055 attached
 => {parent_tid=[19055]}, 88) = 19055
[pid 19054] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19054] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19054] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19055] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19055] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19055] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19055] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19054] <... futex resumed>)        = 0
[pid 19055] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19054] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19055] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19054] <... futex resumed>)        = 0
[pid 19055] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19054] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19055] <... futex resumed>)        = 0
[pid 19054] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19055] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19054] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19055] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19054] <... futex resumed>)        = 0
[pid 19055] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19054] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19055] <... futex resumed>)        = 0
[pid 19054] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19055] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19054] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19055] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19054] <... futex resumed>)        = 0
[pid 19055] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19054] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19055] <... futex resumed>)        = 0
[pid 19054] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19055] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19054] exit_group(0 <unfinished ...>
[pid 19055] <... futex resumed>)        = ?
[pid 19054] <... exit_group resumed>)   = ?
[pid 19055] +++ exited with 0 +++
[pid 19054] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19054, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19056 attached
 <unfinished ...>
[pid 19056] set_robust_list(0x55557c8286a0, 24 <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19056
[pid 19056] <... set_robust_list resumed>) = 0
[pid 19056] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19056] setpgid(0, 0)               = 0
[pid 19056] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19056] write(3, "1000", 4)         = 4
[pid 19056] close(3)                    = 0
executing program
[pid 19056] write(1, "executing program\n", 18) = 18
[pid 19056] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19056] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19056] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19056] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19056] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19056] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19056] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19057 attached
 => {parent_tid=[19057]}, 88) = 19057
[pid 19057] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19056] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19057] <... set_robust_list resumed>) = 0
[pid 19056] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19057] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19056] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19057] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19056] <... futex resumed>)        = 0
[pid 19057] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19056] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19057] <... 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 19057] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19056] <... futex resumed>)        = 0
[pid 19057] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19056] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19057] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19056] <... futex resumed>)        = 0
[pid 19057] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19056] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19057] <... futex resumed>)        = 0
[pid 19056] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19057] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19056] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19057] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19056] <... futex resumed>)        = 0
[pid 19057] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19056] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19057] <... futex resumed>)        = 0
[pid 19056] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19057] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19056] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19057] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19056] <... futex resumed>)        = 0
[pid 19057] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19056] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19057] <... futex resumed>)        = 0
[pid 19056] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19057] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19056] exit_group(0 <unfinished ...>
[pid 19057] <... futex resumed>)        = ?
[pid 19056] <... exit_group resumed>)   = ?
[pid 19057] +++ exited with 0 +++
[pid 19056] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19056, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19058
./strace-static-x86_64: Process 19058 attached
[pid 19058] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19058] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19058] setpgid(0, 0)               = 0
[pid 19058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19058] write(3, "1000", 4)         = 4
[pid 19058] close(3)                    = 0
executing program
[pid 19058] write(1, "executing program\n", 18) = 18
[pid 19058] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19058] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19058] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19058] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19058] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19058] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19058] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19059]}, 88) = 19059
./strace-static-x86_64: Process 19059 attached
[pid 19058] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19058] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19058] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19059] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19059] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19059] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19059] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19058] <... futex resumed>)        = 0
[pid 19059] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19058] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19059] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19058] <... futex resumed>)        = 0
[pid 19059] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19058] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19059] <... futex resumed>)        = 0
[pid 19058] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19059] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19058] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19059] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19058] <... futex resumed>)        = 0
[pid 19059] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19058] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19059] <... futex resumed>)        = 0
[pid 19058] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19059] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19058] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19059] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19058] <... futex resumed>)        = 0
[pid 19059] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19058] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19059] <... futex resumed>)        = 0
[pid 19058] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19059] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19058] exit_group(0 <unfinished ...>
[pid 19059] <... futex resumed>)        = ?
[pid 19058] <... exit_group resumed>)   = ?
[pid 19059] +++ exited with 0 +++
[pid 19058] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19058, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19060
./strace-static-x86_64: Process 19060 attached
[pid 19060] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19060] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19060] setpgid(0, 0)               = 0
[pid 19060] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19060] write(3, "1000", 4)         = 4
[pid 19060] close(3)                    = 0
[pid 19060] write(1, "executing program\n", 18executing program
) = 18
[pid 19060] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19060] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19060] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19060] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19060] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19060] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19060] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19061 attached
 <unfinished ...>
[pid 19061] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19060] <... clone3 resumed> => {parent_tid=[19061]}, 88) = 19061
[pid 19060] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19060] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19060] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19061] <... set_robust_list resumed>) = 0
[pid 19061] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19061] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19061] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19060] <... futex resumed>)        = 0
[pid 19061] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19060] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19061] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19060] <... futex resumed>)        = 0
[pid 19061] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19060] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19061] <... futex resumed>)        = 0
[pid 19060] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19061] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19060] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19061] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19061] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19060] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19061] <... futex resumed>)        = 0
[pid 19060] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19061] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19060] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19061] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19060] <... futex resumed>)        = 0
[pid 19060] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19061] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19060] <... futex resumed>)        = 0
[pid 19061] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19060] exit_group(0 <unfinished ...>
[pid 19061] <... futex resumed>)        = ?
[pid 19060] <... exit_group resumed>)   = ?
[pid 19061] +++ exited with 0 +++
[pid 19060] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19060, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19062
./strace-static-x86_64: Process 19062 attached
[pid 19062] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19062] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19062] setpgid(0, 0)               = 0
[pid 19062] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19062] write(3, "1000", 4)         = 4
[pid 19062] close(3)                    = 0
executing program
[pid 19062] write(1, "executing program\n", 18) = 18
[pid 19062] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19062] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19062] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19062] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19062] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19062] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19062] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19063]}, 88) = 19063
./strace-static-x86_64: Process 19063 attached
[pid 19062] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19063] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19063] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19063] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19062] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19062] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19063] <... futex resumed>)        = 0
[pid 19063] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19062] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19063] <... 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 19063] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19063] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19062] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19062] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19062] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19063] <... futex resumed>)        = 0
[pid 19063] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19063] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19062] <... futex resumed>)        = 0
[pid 19062] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19062] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19063] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19063] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19062] <... futex resumed>)        = 0
[pid 19062] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19062] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19063] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19063] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19062] <... futex resumed>)        = 0
[pid 19062] exit_group(0)               = ?
[pid 19063] +++ exited with 0 +++
[pid 19062] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19062, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19064
./strace-static-x86_64: Process 19064 attached
[pid 19064] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19064] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19064] setpgid(0, 0)               = 0
[pid 19064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19064] write(3, "1000", 4)         = 4
[pid 19064] close(3)                    = 0
executing program
[pid 19064] write(1, "executing program\n", 18) = 18
[pid 19064] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19064] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19064] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19064] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19064] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19064] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19064] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19065]}, 88) = 19065
[pid 19064] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19064] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19064] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19065 attached
 <unfinished ...>
[pid 19065] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19065] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19065] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19065] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19064] <... futex resumed>)        = 0
[pid 19064] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19064] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19065] <... futex resumed>)        = 1
[pid 19065] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19065] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19064] <... futex resumed>)        = 0
[pid 19064] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19064] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19065] <... futex resumed>)        = 1
[pid 19065] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19065] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19064] <... futex resumed>)        = 0
[pid 19064] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19064] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19065] <... futex resumed>)        = 1
[pid 19065] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19065] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19064] <... futex resumed>)        = 0
[pid 19064] exit_group(0)               = ?
[pid 19065] <... futex resumed>)        = ?
[pid 19065] +++ exited with 0 +++
[pid 19064] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19064, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19066
./strace-static-x86_64: Process 19066 attached
[pid 19066] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19066] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19066] setpgid(0, 0)               = 0
[pid 19066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19066] write(3, "1000", 4executing program
)         = 4
[pid 19066] close(3)                    = 0
[pid 19066] write(1, "executing program\n", 18) = 18
[pid 19066] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19066] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19066] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19066] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19066] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19066] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19066] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19067]}, 88) = 19067
[pid 19066] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19066] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19066] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19067 attached
 <unfinished ...>
[pid 19067] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19067] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19067] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19067] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19066] <... futex resumed>)        = 0
[pid 19066] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19066] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19067] <... futex resumed>)        = 1
[pid 19067] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19067] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19066] <... futex resumed>)        = 0
[pid 19066] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19066] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19067] <... futex resumed>)        = 1
[pid 19067] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19067] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19066] <... futex resumed>)        = 0
[pid 19066] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19066] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19067] <... futex resumed>)        = 1
[pid 19067] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19067] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19066] <... futex resumed>)        = 0
[pid 19066] exit_group(0)               = ?
[pid 19067] <... futex resumed>)        = ?
[pid 19067] +++ exited with 0 +++
[pid 19066] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19066, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19068
./strace-static-x86_64: Process 19068 attached
[pid 19068] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19068] setpgid(0, 0)               = 0
[pid 19068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19068] write(3, "1000", 4)         = 4
[pid 19068] close(3)                    = 0
executing program
[pid 19068] write(1, "executing program\n", 18) = 18
[pid 19068] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19068] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19068] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19068] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19068] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19068] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19068] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19069 attached
 => {parent_tid=[19069]}, 88) = 19069
[pid 19068] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19068] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19068] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19069] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19069] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19069] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19069] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19068] <... futex resumed>)        = 0
[pid 19068] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19068] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19069] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19069] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19068] <... futex resumed>)        = 0
[pid 19068] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19068] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19069] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19069] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19068] <... futex resumed>)        = 0
[pid 19068] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19068] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19069] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19069] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19068] <... futex resumed>)        = 0
[pid 19068] exit_group(0)               = ?
[pid 19069] +++ exited with 0 +++
[pid 19068] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19068, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19070
./strace-static-x86_64: Process 19070 attached
[pid 19070] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19070] setpgid(0, 0)               = 0
[pid 19070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19070] write(3, "1000", 4)         = 4
[pid 19070] close(3)                    = 0
[pid 19070] write(1, "executing program\n", 18) = 18
[pid 19070] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000executing program
) = 0
[pid 19070] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19070] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19070] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19070] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19070] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19070] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19071 attached
 => {parent_tid=[19071]}, 88) = 19071
[pid 19071] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19070] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19071] <... set_robust_list resumed>) = 0
[pid 19070] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19071] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19070] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19071] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19070] <... futex resumed>)        = 0
[pid 19071] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19070] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19071] <... 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 19071] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19070] <... futex resumed>)        = 0
[pid 19070] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19070] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19071] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19071] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19070] <... futex resumed>)        = 0
[pid 19070] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19070] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19071] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19071] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19070] <... futex resumed>)        = 0
[pid 19070] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19070] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19071] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19071] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19070] <... futex resumed>)        = 0
[pid 19070] exit_group(0)               = ?
[pid 19071] +++ exited with 0 +++
[pid 19070] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19070, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19072
./strace-static-x86_64: Process 19072 attached
[pid 19072] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19072] setpgid(0, 0)               = 0
[pid 19072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19072] write(3, "1000", 4)         = 4
[pid 19072] close(3)                    = 0
[pid 19072] write(1, "executing program\n", 18executing program
) = 18
[pid 19072] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19072] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19072] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19072] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19072] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19072] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19072] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19073]}, 88) = 19073
[pid 19072] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19072] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19072] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19073 attached
 <unfinished ...>
[pid 19073] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19073] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19073] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19073] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19072] <... futex resumed>)        = 0
[pid 19072] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19072] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19073] <... futex resumed>)        = 1
[pid 19073] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19073] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19072] <... futex resumed>)        = 0
[pid 19072] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19072] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19073] <... futex resumed>)        = 1
[pid 19073] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19073] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19072] <... futex resumed>)        = 0
[pid 19072] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19072] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19073] <... futex resumed>)        = 1
[pid 19073] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19073] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19072] <... futex resumed>)        = 0
[pid 19072] exit_group(0)               = ?
[pid 19073] <... futex resumed>)        = ?
[pid 19073] +++ exited with 0 +++
[pid 19072] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19072, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19074 attached
, child_tidptr=0x55557c828690) = 19074
[pid 19074] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19074] setpgid(0, 0)               = 0
[pid 19074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19074] write(3, "1000", 4)         = 4
[pid 19074] close(3executing program
)                    = 0
[pid 19074] write(1, "executing program\n", 18) = 18
[pid 19074] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19074] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19074] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19074] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19074] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19074] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19074] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19075]}, 88) = 19075
./strace-static-x86_64: Process 19075 attached
[pid 19074] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19074] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19074] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19075] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19075] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19075] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19075] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19075] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19074] <... futex resumed>)        = 0
[pid 19074] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19074] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19075] <... futex resumed>)        = 0
[pid 19075] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19075] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19074] <... futex resumed>)        = 0
[pid 19074] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19074] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19075] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19075] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19074] <... futex resumed>)        = 0
[pid 19074] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19074] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19075] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19075] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19074] <... futex resumed>)        = 0
[pid 19074] exit_group(0)               = ?
[pid 19075] +++ exited with 0 +++
[pid 19074] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19074, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19076 attached
, child_tidptr=0x55557c828690) = 19076
[pid 19076] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19076] setpgid(0, 0)               = 0
[pid 19076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19076] write(3, "1000", 4)         = 4
[pid 19076] close(3)                    = 0
[pid 19076] write(1, "executing program\n", 18executing program
) = 18
[pid 19076] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19076] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19076] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19076] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19076] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19076] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19076] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19077 attached
 => {parent_tid=[19077]}, 88) = 19077
[pid 19076] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19077] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19076] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19077] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19077] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19076] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19077] <... futex resumed>)        = 0
[pid 19077] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19076] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19077] <... 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 19077] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19076] <... futex resumed>)        = 0
[pid 19076] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19076] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19077] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19077] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19076] <... futex resumed>)        = 0
[pid 19076] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19076] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19077] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19077] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19076] <... futex resumed>)        = 0
[pid 19076] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19076] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19077] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19077] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19076] <... futex resumed>)        = 0
[pid 19076] exit_group(0)               = ?
[pid 19077] +++ exited with 0 +++
[pid 19076] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19076, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19078 attached
, child_tidptr=0x55557c828690) = 19078
[pid 19078] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19078] setpgid(0, 0)               = 0
[pid 19078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19078] write(3, "1000", 4)         = 4
[pid 19078] close(3executing program
)                    = 0
[pid 19078] write(1, "executing program\n", 18) = 18
[pid 19078] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19078] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19078] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19078] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19078] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19078] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19078] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19079]}, 88) = 19079
./strace-static-x86_64: Process 19079 attached
[pid 19078] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19078] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19078] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19079] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19079] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19079] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19079] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19078] <... futex resumed>)        = 0
[pid 19079] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19078] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19079] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19078] <... futex resumed>)        = 0
[pid 19079] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19078] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19079] <... futex resumed>)        = 0
[pid 19078] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19079] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19078] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19079] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19078] <... futex resumed>)        = 0
[pid 19079] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19078] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19079] <... futex resumed>)        = 0
[pid 19078] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19079] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19078] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19079] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19078] <... futex resumed>)        = 0
[pid 19079] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19078] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19079] <... futex resumed>)        = 0
[pid 19078] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19079] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19078] exit_group(0 <unfinished ...>
[pid 19079] <... futex resumed>)        = ?
[pid 19078] <... exit_group resumed>)   = ?
[pid 19079] +++ exited with 0 +++
[pid 19078] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19078, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19080 attached
, child_tidptr=0x55557c828690) = 19080
[pid 19080] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19080] setpgid(0, 0)               = 0
[pid 19080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19080] write(3, "1000", 4executing program
)         = 4
[pid 19080] close(3)                    = 0
[pid 19080] write(1, "executing program\n", 18) = 18
[pid 19080] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19080] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19080] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19080] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19080] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19080] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19080] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19081]}, 88) = 19081
./strace-static-x86_64: Process 19081 attached
[pid 19080] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19080] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19080] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19081] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19081] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19081] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19081] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19080] <... futex resumed>)        = 0
[pid 19081] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19080] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19081] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19080] <... futex resumed>)        = 0
[pid 19081] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19080] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19081] <... futex resumed>)        = 0
[pid 19080] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19081] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19080] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19081] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19080] <... futex resumed>)        = 0
[pid 19081] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19080] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19081] <... futex resumed>)        = 0
[pid 19080] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19081] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19080] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19081] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19080] <... futex resumed>)        = 0
[pid 19080] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19081] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19080] <... futex resumed>)        = 0
[pid 19081] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19080] exit_group(0 <unfinished ...>
[pid 19081] <... futex resumed>)        = ?
[pid 19080] <... exit_group resumed>)   = ?
[pid 19081] +++ exited with 0 +++
[pid 19080] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19080, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19082
./strace-static-x86_64: Process 19082 attached
[pid 19082] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19082] setpgid(0, 0)               = 0
[pid 19082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19082] write(3, "1000", 4)         = 4
executing program
[pid 19082] close(3)                    = 0
[pid 19082] write(1, "executing program\n", 18) = 18
[pid 19082] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19082] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19082] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19082] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19082] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19082] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19082] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19083]}, 88) = 19083
[pid 19082] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19082] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19082] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19083 attached
 <unfinished ...>
[pid 19083] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19083] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19083] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19083] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19082] <... futex resumed>)        = 0
[pid 19082] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19082] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19083] <... futex resumed>)        = 1
[pid 19083] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19083] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19082] <... futex resumed>)        = 0
[pid 19082] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19082] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19083] <... futex resumed>)        = 1
[pid 19083] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19083] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19082] <... futex resumed>)        = 0
[pid 19082] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19082] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19083] <... futex resumed>)        = 1
[pid 19083] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19083] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19082] <... futex resumed>)        = 0
[pid 19082] exit_group(0)               = ?
[pid 19083] <... futex resumed>)        = ?
[pid 19083] +++ exited with 0 +++
[pid 19082] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19082, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19084 attached
, child_tidptr=0x55557c828690) = 19084
[pid 19084] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19084] setpgid(0, 0)               = 0
[pid 19084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19084] write(3, "1000", 4)         = 4
[pid 19084] close(3)                    = 0
executing program
[pid 19084] write(1, "executing program\n", 18) = 18
[pid 19084] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19084] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19084] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19084] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19084] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19084] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19084] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19085 attached
 => {parent_tid=[19085]}, 88) = 19085
[pid 19084] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19084] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19084] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19085] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19085] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19085] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19085] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19084] <... futex resumed>)        = 0
[pid 19084] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19084] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19085] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19085] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19084] <... futex resumed>)        = 0
[pid 19084] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19084] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19085] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19085] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19084] <... futex resumed>)        = 0
[pid 19084] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19084] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19085] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19085] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19085] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19084] <... futex resumed>)        = 0
[pid 19084] exit_group(0)               = ?
[pid 19085] <... futex resumed>)        = ?
[pid 19085] +++ exited with 0 +++
[pid 19084] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19084, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19086 attached
, child_tidptr=0x55557c828690) = 19086
[pid 19086] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19086] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19086] setpgid(0, 0)               = 0
[pid 19086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19086] write(3, "1000", 4)         = 4
[pid 19086] close(3)                    = 0
executing program
[pid 19086] write(1, "executing program\n", 18) = 18
[pid 19086] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19086] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19086] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19086] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19086] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19086] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19086] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19087]}, 88) = 19087
[pid 19086] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19086] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19086] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19087 attached
 <unfinished ...>
[pid 19087] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19087] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19087] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19087] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19086] <... futex resumed>)        = 0
[pid 19086] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19086] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19087] <... futex resumed>)        = 1
[pid 19087] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19087] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19086] <... futex resumed>)        = 0
[pid 19086] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19086] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19087] <... futex resumed>)        = 1
[pid 19087] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19087] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19086] <... futex resumed>)        = 0
[pid 19086] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19086] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19087] <... futex resumed>)        = 1
[pid 19087] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19087] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19086] <... futex resumed>)        = 0
[pid 19086] exit_group(0)               = ?
[pid 19087] <... futex resumed>)        = ?
[pid 19087] +++ exited with 0 +++
[pid 19086] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19086, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19088 attached
, child_tidptr=0x55557c828690) = 19088
[pid 19088] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19088] setpgid(0, 0)               = 0
[pid 19088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19088] write(3, "1000", 4)         = 4
executing program
[pid 19088] close(3)                    = 0
[pid 19088] write(1, "executing program\n", 18) = 18
[pid 19088] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19088] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19088] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19088] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19088] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19088] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19088] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19089 attached
 => {parent_tid=[19089]}, 88) = 19089
[pid 19089] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19088] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19089] <... set_robust_list resumed>) = 0
[pid 19088] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19089] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19088] <... futex resumed>)        = 0
[pid 19089] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19088] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19089] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19089] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19088] <... futex resumed>)        = 0
[pid 19088] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19088] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19089] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19089] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19089] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19088] <... futex resumed>)        = 0
[pid 19088] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19088] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19089] <... futex resumed>)        = 0
[pid 19089] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19089] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19089] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19088] <... futex resumed>)        = 0
[pid 19088] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19088] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19089] <... futex resumed>)        = 0
[pid 19089] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19089] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19088] <... futex resumed>)        = 0
[pid 19088] exit_group(0)               = ?
[pid 19089] +++ exited with 0 +++
[pid 19088] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19088, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19090
./strace-static-x86_64: Process 19090 attached
[pid 19090] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19090] setpgid(0, 0)               = 0
[pid 19090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19090] write(3, "1000", 4)         = 4
[pid 19090] close(3)                    = 0
[pid 19090] write(1, "executing program\n", 18executing program
) = 18
[pid 19090] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19090] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19090] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19090] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19090] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19090] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19090] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19091]}, 88) = 19091
[pid 19090] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19090] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19090] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19091 attached
 <unfinished ...>
[pid 19091] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19091] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19091] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19091] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19090] <... futex resumed>)        = 0
[pid 19090] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19090] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19091] <... futex resumed>)        = 1
[pid 19091] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19091] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19090] <... futex resumed>)        = 0
[pid 19090] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19090] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19091] <... futex resumed>)        = 1
[pid 19091] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19091] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19090] <... futex resumed>)        = 0
[pid 19090] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19090] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19091] <... futex resumed>)        = 1
[pid 19091] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19091] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19090] <... futex resumed>)        = 0
[pid 19090] exit_group(0)               = ?
[pid 19091] <... futex resumed>)        = ?
[pid 19091] +++ exited with 0 +++
[pid 19090] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19090, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19092
./strace-static-x86_64: Process 19092 attached
[pid 19092] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19092] setpgid(0, 0)               = 0
[pid 19092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19092] write(3, "1000", 4)         = 4
[pid 19092] close(3executing program
)                    = 0
[pid 19092] write(1, "executing program\n", 18) = 18
[pid 19092] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19092] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19092] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19092] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19092] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19092] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19092] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19093 attached
 => {parent_tid=[19093]}, 88) = 19093
[pid 19092] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19093] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19092] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19092] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19092] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19093] <... set_robust_list resumed>) = 0
[pid 19093] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19093] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19093] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19092] <... futex resumed>)        = 0
[pid 19092] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19093] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19092] <... futex resumed>)        = 0
[pid 19093] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19092] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19093] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19092] <... futex resumed>)        = 0
[pid 19092] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19092] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19093] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19093] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19092] <... futex resumed>)        = 0
[pid 19092] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19092] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19093] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19093] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19092] <... futex resumed>)        = 0
[pid 19092] exit_group(0)               = ?
[pid 19093] +++ exited with 0 +++
[pid 19092] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19092, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19094
./strace-static-x86_64: Process 19094 attached
[pid 19094] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19094] setpgid(0, 0)               = 0
[pid 19094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19094] write(3, "1000", 4)         = 4
[pid 19094] close(3)                    = 0
[pid 19094] write(1, "executing program\n", 18executing program
) = 18
[pid 19094] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19094] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19094] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19094] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19094] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19094] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19094] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19095]}, 88) = 19095
./strace-static-x86_64: Process 19095 attached
[pid 19094] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19094] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19094] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19095] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19095] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19095] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19095] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19094] <... futex resumed>)        = 0
[pid 19094] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19094] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19095] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19095] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19094] <... futex resumed>)        = 0
[pid 19094] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19094] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19095] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19095] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19094] <... futex resumed>)        = 0
[pid 19094] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19094] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19095] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19095] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19094] <... futex resumed>)        = 0
[pid 19095] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19094] exit_group(0)               = ?
[pid 19095] <... futex resumed>)        = ?
[pid 19095] +++ exited with 0 +++
[pid 19094] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19094, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19096 attached
 <unfinished ...>
[pid 19096] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19096] setpgid(0, 0)               = 0
[pid 19096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19096
[pid 19096] <... openat resumed>)       = 3
[pid 19096] write(3, "1000", 4)         = 4
[pid 19096] close(3)                    = 0
[pid 19096] write(1, "executing program\n", 18executing program
) = 18
[pid 19096] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19096] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19096] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19096] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19096] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19096] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19096] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19097]}, 88) = 19097
[pid 19096] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19096] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19096] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19097 attached
 <unfinished ...>
[pid 19097] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19097] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19097] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19097] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19096] <... futex resumed>)        = 0
[pid 19096] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19096] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19097] <... futex resumed>)        = 1
[pid 19097] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19097] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19096] <... futex resumed>)        = 0
[pid 19096] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19096] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19097] <... futex resumed>)        = 1
[pid 19097] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19097] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19096] <... futex resumed>)        = 0
[pid 19096] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19096] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19097] <... futex resumed>)        = 1
[pid 19097] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19097] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19096] <... futex resumed>)        = 0
[pid 19096] exit_group(0)               = ?
[pid 19097] <... futex resumed>)        = ?
[pid 19097] +++ exited with 0 +++
[pid 19096] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19096, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19098
./strace-static-x86_64: Process 19098 attached
[pid 19098] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19098] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19098] setpgid(0, 0)               = 0
[pid 19098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19098] write(3, "1000", 4executing program
)         = 4
[pid 19098] close(3)                    = 0
[pid 19098] write(1, "executing program\n", 18) = 18
[pid 19098] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19098] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19098] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19098] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19098] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19098] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19098] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19099 attached
 => {parent_tid=[19099]}, 88) = 19099
[pid 19099] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19098] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19098] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19098] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19099] <... set_robust_list resumed>) = 0
[pid 19099] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19099] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19099] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19099] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19098] <... futex resumed>)        = 0
[pid 19098] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19098] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19099] <... futex resumed>)        = 0
[pid 19099] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19099] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19098] <... futex resumed>)        = 0
[pid 19098] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19098] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19099] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19099] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19098] <... futex resumed>)        = 0
[pid 19098] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19098] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19099] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19099] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19098] <... futex resumed>)        = 0
[pid 19098] exit_group(0)               = ?
[pid 19099] +++ exited with 0 +++
[pid 19098] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19098, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19100
./strace-static-x86_64: Process 19100 attached
[pid 19100] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19100] setpgid(0, 0)               = 0
[pid 19100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19100] write(3, "1000", 4)         = 4
[pid 19100] close(3)                    = 0
[pid 19100] write(1, "executing program\n", 18executing program
) = 18
[pid 19100] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19100] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19100] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19100] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19100] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19100] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19100] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19101 attached
 => {parent_tid=[19101]}, 88) = 19101
[pid 19101] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19100] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19100] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19101] <... set_robust_list resumed>) = 0
[pid 19101] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19100] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19101] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19101] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19101] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19100] <... futex resumed>)        = 0
[pid 19100] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19100] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19101] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19101] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19100] <... futex resumed>)        = 0
[pid 19100] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19100] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19101] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19101] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19100] <... futex resumed>)        = 0
[pid 19100] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19100] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19101] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19101] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19101] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19100] <... futex resumed>)        = 0
[pid 19100] exit_group(0)               = ?
[pid 19101] <... futex resumed>)        = ?
[pid 19101] +++ exited with 0 +++
[pid 19100] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19100, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19102
./strace-static-x86_64: Process 19102 attached
[pid 19102] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19102] setpgid(0, 0)               = 0
[pid 19102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19102] write(3, "1000", 4)         = 4
executing program
[pid 19102] close(3)                    = 0
[pid 19102] write(1, "executing program\n", 18) = 18
[pid 19102] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19102] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19102] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19102] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19102] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19102] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19102] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19103 attached
 => {parent_tid=[19103]}, 88) = 19103
[pid 19103] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19102] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19103] <... set_robust_list resumed>) = 0
[pid 19102] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19103] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19102] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19103] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19102] <... futex resumed>)        = 0
[pid 19103] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19102] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19103] <... 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 19103] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19102] <... futex resumed>)        = 0
[pid 19102] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19102] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19103] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19103] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19102] <... futex resumed>)        = 0
[pid 19103] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19102] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19103] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19102] <... futex resumed>)        = 0
[pid 19103] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19102] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19103] <... futex resumed>)        = 0
[pid 19102] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19103] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19102] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19103] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19102] <... futex resumed>)        = 0
[pid 19102] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19103] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19102] <... futex resumed>)        = 0
[pid 19103] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19102] exit_group(0 <unfinished ...>
[pid 19103] <... futex resumed>)        = ?
[pid 19102] <... exit_group resumed>)   = ?
[pid 19103] +++ exited with 0 +++
[pid 19102] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19102, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19104 attached
, child_tidptr=0x55557c828690) = 19104
[pid 19104] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19104] setpgid(0, 0)               = 0
[pid 19104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19104] write(3, "1000", 4)         = 4
[pid 19104] close(3)                    = 0
[pid 19104] write(1, "executing program\n", 18executing program
) = 18
[pid 19104] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19104] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19104] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19104] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19104] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19104] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19104] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19105]}, 88) = 19105
./strace-static-x86_64: Process 19105 attached
[pid 19104] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19105] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19104] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19105] <... set_robust_list resumed>) = 0
[pid 19104] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19105] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19104] <... futex resumed>)        = 0
[pid 19105] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19104] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19105] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19105] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19104] <... futex resumed>)        = 0
[pid 19105] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19104] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19105] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19104] <... futex resumed>)        = 0
[pid 19105] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19104] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19105] <... futex resumed>)        = 0
[pid 19104] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19105] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19104] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19105] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19104] <... futex resumed>)        = 0
[pid 19105] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19104] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19105] <... futex resumed>)        = 0
[pid 19104] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19105] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19104] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19105] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19104] <... futex resumed>)        = 0
[pid 19105] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19104] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19105] <... futex resumed>)        = 0
[pid 19104] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19105] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19104] exit_group(0 <unfinished ...>
[pid 19105] <... futex resumed>)        = ?
[pid 19104] <... exit_group resumed>)   = ?
[pid 19105] +++ exited with 0 +++
[pid 19104] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19104, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19106 attached
, child_tidptr=0x55557c828690) = 19106
[pid 19106] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19106] setpgid(0, 0)               = 0
[pid 19106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19106] write(3, "1000", 4)         = 4
[pid 19106] close(3)                    = 0
[pid 19106] write(1, "executing program\n", 18executing program
) = 18
[pid 19106] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19106] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19106] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19106] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19106] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19106] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19106] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19107 attached
 => {parent_tid=[19107]}, 88) = 19107
[pid 19106] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19106] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19106] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19107] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19107] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19107] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19107] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19106] <... futex resumed>)        = 0
[pid 19106] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19106] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19107] <... futex resumed>)        = 1
[pid 19107] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19107] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19106] <... futex resumed>)        = 0
[pid 19106] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19106] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19107] <... futex resumed>)        = 1
[pid 19107] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19107] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19106] <... futex resumed>)        = 0
[pid 19106] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19106] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19107] <... futex resumed>)        = 1
[pid 19107] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19107] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19106] <... futex resumed>)        = 0
[pid 19106] exit_group(0)               = ?
[pid 19107] <... futex resumed>)        = ?
[pid 19107] +++ exited with 0 +++
[pid 19106] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19106, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19108
./strace-static-x86_64: Process 19108 attached
[pid 19108] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19108] setpgid(0, 0)               = 0
[pid 19108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
executing program
[pid 19108] write(3, "1000", 4)         = 4
[pid 19108] close(3)                    = 0
[pid 19108] write(1, "executing program\n", 18) = 18
[pid 19108] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19108] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19108] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19108] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19108] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19108] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19108] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19109 attached
 => {parent_tid=[19109]}, 88) = 19109
[pid 19109] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19108] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19109] <... set_robust_list resumed>) = 0
[pid 19108] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19109] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19108] <... futex resumed>)        = 0
[pid 19109] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19108] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19109] <... 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 19109] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19108] <... futex resumed>)        = 0
[pid 19108] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19108] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19109] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19109] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19108] <... futex resumed>)        = 0
[pid 19108] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19108] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19109] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19109] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19108] <... futex resumed>)        = 0
[pid 19108] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19108] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19109] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19109] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19108] <... futex resumed>)        = 0
[pid 19108] exit_group(0)               = ?
[pid 19109] +++ exited with 0 +++
[pid 19108] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19108, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19110
./strace-static-x86_64: Process 19110 attached
[pid 19110] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19110] setpgid(0, 0)               = 0
[pid 19110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19110] write(3, "1000", 4)         = 4
[pid 19110] close(3)                    = 0
[pid 19110] write(1, "executing program\n", 18executing program
) = 18
[pid 19110] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19110] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19110] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19110] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19110] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19110] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19110] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19111]}, 88) = 19111
[pid 19110] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19110] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19110] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19111 attached
 <unfinished ...>
[pid 19111] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19111] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19111] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19111] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19110] <... futex resumed>)        = 0
[pid 19111] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19110] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19111] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19110] <... futex resumed>)        = 0
[pid 19111] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19110] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19111] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19111] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19110] <... futex resumed>)        = 0
[pid 19110] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19110] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19111] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19111] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19110] <... futex resumed>)        = 0
[pid 19110] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19110] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19111] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19111] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19110] <... futex resumed>)        = 0
[pid 19110] exit_group(0)               = ?
[pid 19111] +++ exited with 0 +++
[pid 19110] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19110, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19112 attached
, child_tidptr=0x55557c828690) = 19112
[pid 19112] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19112] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19112] setpgid(0, 0)               = 0
[pid 19112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19112] write(3, "1000", 4)         = 4
[pid 19112] close(3)                    = 0
[pid 19112] write(1, "executing program\n", 18executing program
) = 18
[pid 19112] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19112] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19112] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19112] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19112] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19112] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19112] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19113 attached
 => {parent_tid=[19113]}, 88) = 19113
[pid 19112] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19112] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19112] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19113] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19113] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19113] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19113] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19112] <... futex resumed>)        = 0
[pid 19112] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19112] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19113] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19113] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19112] <... futex resumed>)        = 0
[pid 19113] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19112] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19112] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19113] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19113] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19112] <... futex resumed>)        = 0
[pid 19113] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19112] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19113] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19112] <... futex resumed>)        = 0
[pid 19113] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19112] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19113] <... futex resumed>)        = 0
[pid 19112] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19113] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19112] exit_group(0 <unfinished ...>
[pid 19113] <... futex resumed>)        = ?
[pid 19112] <... exit_group resumed>)   = ?
[pid 19113] +++ exited with 0 +++
[pid 19112] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19112, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19114 attached
 <unfinished ...>
[pid 19114] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19114] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19114
[pid 19114] <... prctl resumed>)        = 0
[pid 19114] setpgid(0, 0)               = 0
[pid 19114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19114] write(3, "1000", 4)         = 4
[pid 19114] close(3)                    = 0
executing program
[pid 19114] write(1, "executing program\n", 18) = 18
[pid 19114] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19114] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19114] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19114] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19114] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19114] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19114] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19115]}, 88) = 19115
[pid 19114] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19114] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19114] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19115 attached
 <unfinished ...>
[pid 19115] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19115] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19115] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19115] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19114] <... futex resumed>)        = 0
[pid 19114] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19114] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19115] <... futex resumed>)        = 1
[pid 19115] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19115] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19114] <... futex resumed>)        = 0
[pid 19114] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19114] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19115] <... futex resumed>)        = 1
[pid 19115] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19115] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19114] <... futex resumed>)        = 0
[pid 19114] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19114] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19115] <... futex resumed>)        = 1
[pid 19115] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19115] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19114] <... futex resumed>)        = 0
[pid 19114] exit_group(0)               = ?
[pid 19115] <... futex resumed>)        = ?
[pid 19115] +++ exited with 0 +++
[pid 19114] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19114, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19116 attached
, child_tidptr=0x55557c828690) = 19116
[pid 19116] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19116] setpgid(0, 0)               = 0
[pid 19116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19116] write(3, "1000", 4)         = 4
[pid 19116] close(3)                    = 0
[pid 19116] write(1, "executing program\n", 18executing program
) = 18
[pid 19116] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19116] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19116] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19116] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19116] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19116] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19116] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19117 attached
 => {parent_tid=[19117]}, 88) = 19117
[pid 19116] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19116] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19116] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19117] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19117] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19117] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19117] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19116] <... futex resumed>)        = 0
[pid 19116] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19116] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19117] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19117] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19116] <... futex resumed>)        = 0
[pid 19116] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19116] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19117] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19117] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19116] <... futex resumed>)        = 0
[pid 19116] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19116] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19117] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19117] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19116] <... futex resumed>)        = 0
[pid 19116] exit_group(0)               = ?
[pid 19117] +++ exited with 0 +++
[pid 19116] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19116, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19118
./strace-static-x86_64: Process 19118 attached
[pid 19118] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19118] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19118] setpgid(0, 0)               = 0
[pid 19118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19118] write(3, "1000", 4)         = 4
[pid 19118] close(3)                    = 0
executing program
[pid 19118] write(1, "executing program\n", 18) = 18
[pid 19118] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19118] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19118] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19118] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19118] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19118] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19118] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19119]}, 88) = 19119
./strace-static-x86_64: Process 19119 attached
[pid 19118] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19119] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19118] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19119] <... set_robust_list resumed>) = 0
[pid 19119] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19118] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19119] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19119] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19118] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19119] <... 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 19119] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19118] <... futex resumed>)        = 0
[pid 19118] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19118] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19119] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19119] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19118] <... futex resumed>)        = 0
[pid 19118] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19118] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19119] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19119] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19118] <... futex resumed>)        = 0
[pid 19118] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19118] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19119] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19119] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19118] <... futex resumed>)        = 0
[pid 19118] exit_group(0)               = ?
[pid 19119] +++ exited with 0 +++
[pid 19118] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19118, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19120 attached
 <unfinished ...>
[pid 19120] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19120
[pid 19120] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19120] setpgid(0, 0)               = 0
[pid 19120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19120] write(3, "1000", 4)         = 4
[pid 19120] close(3)                    = 0
executing program
[pid 19120] write(1, "executing program\n", 18) = 18
[pid 19120] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19120] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19120] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19120] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19120] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19120] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19120] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19121 attached
 => {parent_tid=[19121]}, 88) = 19121
[pid 19120] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19120] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19120] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19121] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19121] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19121] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19121] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19120] <... futex resumed>)        = 0
[pid 19121] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19120] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19121] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19120] <... futex resumed>)        = 0
[pid 19121] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19120] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19121] <... futex resumed>)        = 0
[pid 19120] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19121] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19120] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19121] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19120] <... futex resumed>)        = 0
[pid 19121] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19120] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19121] <... futex resumed>)        = 0
[pid 19120] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19121] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19120] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19121] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19120] <... futex resumed>)        = 0
[pid 19121] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19120] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19121] <... futex resumed>)        = 0
[pid 19120] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19121] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19120] exit_group(0 <unfinished ...>
[pid 19121] <... futex resumed>)        = ?
[pid 19120] <... exit_group resumed>)   = ?
[pid 19121] +++ exited with 0 +++
[pid 19120] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19120, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19122
./strace-static-x86_64: Process 19122 attached
[pid 19122] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19122] setpgid(0, 0)               = 0
[pid 19122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19122] write(3, "1000", 4)         = 4
[pid 19122] close(3)                    = 0
executing program
[pid 19122] write(1, "executing program\n", 18) = 18
[pid 19122] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19122] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19122] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19122] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19122] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19122] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19122] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19123]}, 88) = 19123
[pid 19122] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19122] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19122] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19123 attached
 <unfinished ...>
[pid 19123] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19123] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19123] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19123] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19122] <... futex resumed>)        = 0
[pid 19122] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19122] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19123] <... futex resumed>)        = 1
[pid 19123] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19123] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19122] <... futex resumed>)        = 0
[pid 19122] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19122] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19123] <... futex resumed>)        = 1
[pid 19123] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19123] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19122] <... futex resumed>)        = 0
[pid 19122] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19122] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19123] <... futex resumed>)        = 1
[pid 19123] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19123] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19122] <... futex resumed>)        = 0
[pid 19123] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19122] exit_group(0)               = ?
[pid 19123] <... futex resumed>)        = ?
[pid 19123] +++ exited with 0 +++
[pid 19122] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19122, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19124 attached
, child_tidptr=0x55557c828690) = 19124
[pid 19124] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19124] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19124] setpgid(0, 0)               = 0
[pid 19124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19124] write(3, "1000", 4)         = 4
[pid 19124] close(3)                    = 0
[pid 19124] write(1, "executing program\n", 18) = 18
[pid 19124] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000executing program
) = 0
[pid 19124] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19124] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19124] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19124] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19124] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19124] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19125]}, 88) = 19125
[pid 19124] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19124] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19124] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19125 attached
 <unfinished ...>
[pid 19125] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19125] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19125] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19125] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19124] <... futex resumed>)        = 0
[pid 19124] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19124] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19125] <... futex resumed>)        = 1
[pid 19125] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19125] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19124] <... futex resumed>)        = 0
[pid 19124] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19124] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19125] <... futex resumed>)        = 1
[pid 19125] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19125] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19124] <... futex resumed>)        = 0
[pid 19124] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19124] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19125] <... futex resumed>)        = 1
[pid 19125] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19125] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19124] <... futex resumed>)        = 0
[pid 19124] exit_group(0)               = ?
[pid 19125] <... futex resumed>)        = ?
[pid 19125] +++ exited with 0 +++
[pid 19124] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19124, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19126
./strace-static-x86_64: Process 19126 attached
[pid 19126] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19126] setpgid(0, 0)               = 0
[pid 19126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19126] write(3, "1000", 4)         = 4
[pid 19126] close(3executing program
)                    = 0
[pid 19126] write(1, "executing program\n", 18) = 18
[pid 19126] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19126] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19126] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19126] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19126] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19126] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19126] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19127]}, 88) = 19127
./strace-static-x86_64: Process 19127 attached
[pid 19126] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19126] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19126] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19127] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19127] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19127] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19127] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19126] <... futex resumed>)        = 0
[pid 19126] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19126] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19127] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19127] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19126] <... futex resumed>)        = 0
[pid 19126] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19126] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19127] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19127] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19126] <... futex resumed>)        = 0
[pid 19126] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19126] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19127] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19127] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19127] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19126] <... futex resumed>)        = 0
[pid 19126] exit_group(0)               = ?
[pid 19127] <... futex resumed>)        = ?
[pid 19127] +++ exited with 0 +++
[pid 19126] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19126, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19128
./strace-static-x86_64: Process 19128 attached
[pid 19128] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19128] setpgid(0, 0)               = 0
[pid 19128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19128] write(3, "1000", 4)         = 4
[pid 19128] close(3executing program
)                    = 0
[pid 19128] write(1, "executing program\n", 18) = 18
[pid 19128] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19128] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19128] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19128] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19128] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19128] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19128] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19129 attached
 => {parent_tid=[19129]}, 88) = 19129
[pid 19128] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19128] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19128] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19129] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19129] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19129] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19129] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19128] <... futex resumed>)        = 0
[pid 19128] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19128] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19129] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19129] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19128] <... futex resumed>)        = 0
[pid 19128] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19128] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19129] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19129] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19128] <... futex resumed>)        = 0
[pid 19128] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19128] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19129] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19129] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19128] <... futex resumed>)        = 0
[pid 19128] exit_group(0)               = ?
[pid 19129] +++ exited with 0 +++
[pid 19128] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19128, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19130
./strace-static-x86_64: Process 19130 attached
[pid 19130] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19130] setpgid(0, 0)               = 0
[pid 19130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19130] write(3, "1000", 4)         = 4
[pid 19130] close(3)                    = 0
[pid 19130] write(1, "executing program\n", 18executing program
) = 18
[pid 19130] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19130] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19130] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19130] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19130] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19130] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19130] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19131]}, 88) = 19131
[pid 19130] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19130] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19130] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19131 attached
 <unfinished ...>
[pid 19131] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19131] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19131] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19131] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19130] <... futex resumed>)        = 0
[pid 19130] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19130] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19131] <... futex resumed>)        = 1
[pid 19131] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19131] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19130] <... futex resumed>)        = 0
[pid 19130] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19130] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19131] <... futex resumed>)        = 1
[pid 19131] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19131] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19130] <... futex resumed>)        = 0
[pid 19130] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19130] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19131] <... futex resumed>)        = 1
[pid 19131] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19131] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19130] <... futex resumed>)        = 0
[pid 19130] exit_group(0)               = ?
[pid 19131] <... futex resumed>)        = ?
[pid 19131] +++ exited with 0 +++
[pid 19130] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19130, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19132
./strace-static-x86_64: Process 19132 attached
[pid 19132] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19132] setpgid(0, 0)               = 0
[pid 19132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19132] write(3, "1000", 4)         = 4
[pid 19132] close(3)                    = 0
executing program
[pid 19132] write(1, "executing program\n", 18) = 18
[pid 19132] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19132] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19132] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19132] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19132] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19132] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19132] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19133 attached
 => {parent_tid=[19133]}, 88) = 19133
[pid 19132] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19132] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19132] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19133] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19133] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19133] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19133] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19132] <... futex resumed>)        = 0
[pid 19132] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19132] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19133] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19133] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19132] <... futex resumed>)        = 0
[pid 19132] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19132] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19133] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19133] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19132] <... futex resumed>)        = 0
[pid 19132] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19132] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19133] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19133] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19132] <... futex resumed>)        = 0
[pid 19132] exit_group(0)               = ?
[pid 19133] +++ exited with 0 +++
[pid 19132] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19132, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19134 attached
, child_tidptr=0x55557c828690) = 19134
[pid 19134] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19134] setpgid(0, 0)               = 0
[pid 19134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19134] write(3, "1000", 4)         = 4
[pid 19134] close(3executing program
)                    = 0
[pid 19134] write(1, "executing program\n", 18) = 18
[pid 19134] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19134] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19134] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19134] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19134] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19134] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19134] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19135 attached
 <unfinished ...>
[pid 19135] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19134] <... clone3 resumed> => {parent_tid=[19135]}, 88) = 19135
[pid 19134] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19135] <... set_robust_list resumed>) = 0
[pid 19134] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19135] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19134] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19135] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19134] <... futex resumed>)        = 0
[pid 19135] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19134] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19135] <... 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 19135] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19134] <... futex resumed>)        = 0
[pid 19134] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19134] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19135] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19135] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19134] <... futex resumed>)        = 0
[pid 19134] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19134] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19135] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19135] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19134] <... futex resumed>)        = 0
[pid 19134] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19134] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19135] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19135] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19134] <... futex resumed>)        = 0
[pid 19134] exit_group(0)               = ?
[pid 19135] +++ exited with 0 +++
[pid 19134] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19134, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19136 attached
 <unfinished ...>
[pid 19136] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19136] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19136] setpgid(0, 0)               = 0
[pid 19136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19136
[pid 19136] <... openat resumed>)       = 3
[pid 19136] write(3, "1000", 4)         = 4
[pid 19136] close(3)                    = 0
[pid 19136] write(1, "executing program\n", 18executing program
) = 18
[pid 19136] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19136] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19136] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19136] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19136] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19136] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19136] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19137 attached
 => {parent_tid=[19137]}, 88) = 19137
[pid 19137] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19136] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19137] <... set_robust_list resumed>) = 0
[pid 19136] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19137] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19136] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19137] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19136] <... futex resumed>)        = 0
[pid 19137] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19136] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19137] <... 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 19137] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19136] <... futex resumed>)        = 0
[pid 19137] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19136] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19137] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19136] <... futex resumed>)        = 0
[pid 19137] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19136] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19137] <... futex resumed>)        = 0
[pid 19136] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19137] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19136] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19137] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19136] <... futex resumed>)        = 0
[pid 19137] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19136] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19137] <... futex resumed>)        = 0
[pid 19136] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19137] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19136] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19137] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19136] <... futex resumed>)        = 0
[pid 19137] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19136] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19137] <... futex resumed>)        = 0
[pid 19136] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19137] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19136] exit_group(0 <unfinished ...>
[pid 19137] <... futex resumed>)        = ?
[pid 19136] <... exit_group resumed>)   = ?
[pid 19137] +++ exited with 0 +++
[pid 19136] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19136, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19138
./strace-static-x86_64: Process 19138 attached
[pid 19138] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19138] setpgid(0, 0)               = 0
[pid 19138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19138] write(3, "1000", 4)         = 4
[pid 19138] close(3executing program
)                    = 0
[pid 19138] write(1, "executing program\n", 18) = 18
[pid 19138] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19138] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19138] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19138] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19138] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19138] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19138] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19139 attached
 => {parent_tid=[19139]}, 88) = 19139
[pid 19139] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19138] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19139] <... set_robust_list resumed>) = 0
[pid 19138] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19139] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19138] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19139] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19138] <... futex resumed>)        = 0
[pid 19139] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19138] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19139] <... 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 19139] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19138] <... futex resumed>)        = 0
[pid 19139] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19138] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19139] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19138] <... futex resumed>)        = 0
[pid 19139] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19138] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19139] <... futex resumed>)        = 0
[pid 19138] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19139] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19138] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19139] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19139] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19138] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19139] <... futex resumed>)        = 0
[pid 19138] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19139] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19138] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19138] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19139] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19139] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19138] <... futex resumed>)        = 0
[pid 19139] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19138] exit_group(0 <unfinished ...>
[pid 19139] <... futex resumed>)        = ?
[pid 19138] <... exit_group resumed>)   = ?
[pid 19139] +++ exited with 0 +++
[pid 19138] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19138, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19140 attached
, child_tidptr=0x55557c828690) = 19140
[pid 19140] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19140] setpgid(0, 0)               = 0
[pid 19140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19140] write(3, "1000", 4)         = 4
[pid 19140] close(3)                    = 0
[pid 19140] write(1, "executing program\n", 18executing program
) = 18
[pid 19140] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19140] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19140] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19140] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19140] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19140] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19140] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19141]}, 88) = 19141
[pid 19140] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19140] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19140] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19141 attached
 <unfinished ...>
[pid 19141] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19141] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19141] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19141] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19140] <... futex resumed>)        = 0
[pid 19140] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19140] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19141] <... futex resumed>)        = 1
[pid 19141] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19141] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19140] <... futex resumed>)        = 0
[pid 19140] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19140] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19141] <... futex resumed>)        = 1
[pid 19141] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19141] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19140] <... futex resumed>)        = 0
[pid 19140] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19140] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19141] <... futex resumed>)        = 1
[pid 19141] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19141] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19140] <... futex resumed>)        = 0
[pid 19140] exit_group(0 <unfinished ...>
[pid 19141] <... futex resumed>)        = 1
[pid 19140] <... exit_group resumed>)   = ?
[pid 19141] +++ exited with 0 +++
[pid 19140] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19140, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19142
./strace-static-x86_64: Process 19142 attached
[pid 19142] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19142] setpgid(0, 0)               = 0
[pid 19142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19142] write(3, "1000", 4)         = 4
[pid 19142] close(3)                    = 0
[pid 19142] write(1, "executing program\n", 18executing program
) = 18
[pid 19142] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19142] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19142] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19142] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19142] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19142] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19142] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19143 attached
 => {parent_tid=[19143]}, 88) = 19143
[pid 19142] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19142] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19142] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19143] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19143] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19143] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19143] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19142] <... futex resumed>)        = 0
[pid 19142] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19142] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19143] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19143] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19143] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19142] <... futex resumed>)        = 0
[pid 19142] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19142] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19143] <... futex resumed>)        = 0
[pid 19143] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19143] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19142] <... futex resumed>)        = 0
[pid 19142] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19142] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19143] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19143] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19142] <... futex resumed>)        = 0
[pid 19142] exit_group(0)               = ?
[pid 19143] +++ exited with 0 +++
[pid 19142] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19142, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19144
./strace-static-x86_64: Process 19144 attached
[pid 19144] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19144] setpgid(0, 0)               = 0
[pid 19144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19144] write(3, "1000", 4)         = 4
[pid 19144] close(3)                    = 0
executing program
[pid 19144] write(1, "executing program\n", 18) = 18
[pid 19144] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19144] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19144] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19144] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19144] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19144] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19144] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19145 attached
 => {parent_tid=[19145]}, 88) = 19145
[pid 19144] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19144] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19144] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19145] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19145] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19145] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19145] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19144] <... futex resumed>)        = 0
[pid 19144] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19144] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19145] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19145] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19144] <... futex resumed>)        = 0
[pid 19144] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19144] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19145] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19145] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19144] <... futex resumed>)        = 0
[pid 19144] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19144] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19145] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19145] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19144] <... futex resumed>)        = 0
[pid 19144] exit_group(0)               = ?
[pid 19145] +++ exited with 0 +++
[pid 19144] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19144, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19146
./strace-static-x86_64: Process 19146 attached
[pid 19146] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19146] setpgid(0, 0)               = 0
[pid 19146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19146] write(3, "1000", 4)         = 4
[pid 19146] close(3)                    = 0
executing program
[pid 19146] write(1, "executing program\n", 18) = 18
[pid 19146] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19146] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19146] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19146] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19146] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19146] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19146] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19147]}, 88) = 19147
[pid 19146] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19146] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19146] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19147 attached
 <unfinished ...>
[pid 19147] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19147] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19147] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19147] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19146] <... futex resumed>)        = 0
[pid 19146] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19146] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19147] <... futex resumed>)        = 1
[pid 19147] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19147] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19146] <... futex resumed>)        = 0
[pid 19146] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19146] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19147] <... futex resumed>)        = 1
[pid 19147] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19147] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19146] <... futex resumed>)        = 0
[pid 19146] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19146] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19147] <... futex resumed>)        = 1
[pid 19147] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19147] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19146] <... futex resumed>)        = 0
[pid 19146] exit_group(0)               = ?
[pid 19147] <... futex resumed>)        = ?
[pid 19147] +++ exited with 0 +++
[pid 19146] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19146, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19148
./strace-static-x86_64: Process 19148 attached
[pid 19148] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19148] setpgid(0, 0)               = 0
[pid 19148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19148] write(3, "1000", 4)         = 4
[pid 19148] close(3)                    = 0
[pid 19148] write(1, "executing program\n", 18executing program
) = 18
[pid 19148] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19148] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19148] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19148] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19148] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19148] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19148] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19149]}, 88) = 19149
[pid 19148] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19148] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19148] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19149 attached
 <unfinished ...>
[pid 19149] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19149] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19149] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19149] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19148] <... futex resumed>)        = 0
[pid 19148] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19148] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19149] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19149] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19148] <... futex resumed>)        = 0
[pid 19148] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19148] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19149] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19149] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19148] <... futex resumed>)        = 0
[pid 19148] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19148] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19149] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19149] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19148] <... futex resumed>)        = 0
[pid 19148] exit_group(0)               = ?
[pid 19149] +++ exited with 0 +++
[pid 19148] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19148, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19150
./strace-static-x86_64: Process 19150 attached
[pid 19150] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19150] setpgid(0, 0)               = 0
[pid 19150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19150] write(3, "1000", 4)         = 4
[pid 19150] close(3)                    = 0
executing program
[pid 19150] write(1, "executing program\n", 18) = 18
[pid 19150] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19150] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19150] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19150] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19150] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19150] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19150] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19151]}, 88) = 19151
[pid 19150] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19150] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19150] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19151 attached
 <unfinished ...>
[pid 19151] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19151] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19151] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19151] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19150] <... futex resumed>)        = 0
[pid 19150] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19150] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19151] <... futex resumed>)        = 1
[pid 19151] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19151] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19150] <... futex resumed>)        = 0
[pid 19150] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19150] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19151] <... futex resumed>)        = 1
[pid 19151] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19151] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19150] <... futex resumed>)        = 0
[pid 19150] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19150] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19151] <... futex resumed>)        = 1
[pid 19151] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19151] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19150] <... futex resumed>)        = 0
[pid 19150] exit_group(0)               = ?
[pid 19151] <... futex resumed>)        = ?
[pid 19151] +++ exited with 0 +++
[pid 19150] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19150, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19152
./strace-static-x86_64: Process 19152 attached
[pid 19152] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19152] setpgid(0, 0)               = 0
[pid 19152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19152] write(3, "1000", 4)         = 4
[pid 19152] close(3)                    = 0
[pid 19152] write(1, "executing program\n", 18executing program
) = 18
[pid 19152] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19152] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19152] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19152] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19152] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19152] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19152] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19153 attached
 => {parent_tid=[19153]}, 88) = 19153
[pid 19152] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19153] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19152] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19153] <... set_robust_list resumed>) = 0
[pid 19152] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19153] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19152] <... futex resumed>)        = 0
[pid 19153] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19152] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19153] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19153] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19152] <... futex resumed>)        = 0
[pid 19153] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19152] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19153] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19152] <... futex resumed>)        = 0
[pid 19153] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19152] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19153] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19153] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19152] <... futex resumed>)        = 0
[pid 19152] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19152] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19153] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19153] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19152] <... futex resumed>)        = 0
[pid 19152] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19152] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19153] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19153] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19152] <... futex resumed>)        = 0
[pid 19152] exit_group(0)               = ?
[pid 19153] +++ exited with 0 +++
[pid 19152] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19152, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19154
./strace-static-x86_64: Process 19154 attached
[pid 19154] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19154] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19154] setpgid(0, 0)               = 0
[pid 19154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19154] write(3, "1000", 4)         = 4
[pid 19154] close(3)                    = 0
[pid 19154] write(1, "executing program\n", 18executing program
) = 18
[pid 19154] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19154] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19154] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19154] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19154] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19154] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19154] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19155 attached
 => {parent_tid=[19155]}, 88) = 19155
[pid 19155] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19154] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19155] <... set_robust_list resumed>) = 0
[pid 19154] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19155] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19154] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19155] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19154] <... futex resumed>)        = 0
[pid 19155] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19154] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19155] <... 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 19155] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19154] <... futex resumed>)        = 0
[pid 19154] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19154] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19155] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19155] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19154] <... futex resumed>)        = 0
[pid 19154] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19154] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19155] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19155] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19154] <... futex resumed>)        = 0
[pid 19155] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19154] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19154] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19155] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19155] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19155] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19154] <... futex resumed>)        = 0
[pid 19154] exit_group(0)               = ?
[pid 19155] +++ exited with 0 +++
[pid 19154] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19154, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19156
./strace-static-x86_64: Process 19156 attached
[pid 19156] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19156] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19156] setpgid(0, 0)               = 0
[pid 19156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19156] write(3, "1000", 4)         = 4
[pid 19156] close(3)                    = 0
executing program
[pid 19156] write(1, "executing program\n", 18) = 18
[pid 19156] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19156] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19156] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19156] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19156] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19156] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19156] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19157]}, 88) = 19157
./strace-static-x86_64: Process 19157 attached
[pid 19156] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19157] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19157] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19157] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19156] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19156] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19157] <... futex resumed>)        = 0
[pid 19156] <... futex resumed>)        = 1
[pid 19156] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19157] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19157] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19157] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19156] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19156] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19157] <... futex resumed>)        = 0
[pid 19156] <... futex resumed>)        = 1
[pid 19157] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19156] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19157] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19157] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19156] <... futex resumed>)        = 0
[pid 19157] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19156] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19157] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19156] <... futex resumed>)        = 0
[pid 19157] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19156] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19157] <... futex resumed>)        = 0
[pid 19156] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19156] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19157] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19156] <... futex resumed>)        = 0
[pid 19157] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19156] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19157] <... futex resumed>)        = 0
[pid 19156] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19157] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19156] exit_group(0)               = ?
[pid 19157] <... futex resumed>)        = ?
[pid 19157] +++ exited with 0 +++
[pid 19156] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19156, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19158 attached
, child_tidptr=0x55557c828690) = 19158
[pid 19158] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19158] setpgid(0, 0)               = 0
[pid 19158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19158] write(3, "1000", 4)         = 4
[pid 19158] close(3)                    = 0
[pid 19158] write(1, "executing program\n", 18executing program
) = 18
[pid 19158] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19158] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19158] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19158] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19158] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19158] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19158] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19159 attached
 => {parent_tid=[19159]}, 88) = 19159
[pid 19159] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19158] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19159] <... set_robust_list resumed>) = 0
[pid 19158] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19159] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19158] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19159] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19158] <... futex resumed>)        = 0
[pid 19159] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19158] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19159] <... 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 19159] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19158] <... futex resumed>)        = 0
[pid 19159] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19158] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19159] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19158] <... futex resumed>)        = 0
[pid 19159] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19158] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19159] <... futex resumed>)        = 0
[pid 19158] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19159] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19158] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19159] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19158] <... futex resumed>)        = 0
[pid 19159] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19158] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19159] <... futex resumed>)        = 0
[pid 19158] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19159] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19158] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19159] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19158] <... futex resumed>)        = 0
[pid 19159] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19158] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19159] <... futex resumed>)        = 0
[pid 19158] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19159] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19158] exit_group(0 <unfinished ...>
[pid 19159] <... futex resumed>)        = ?
[pid 19158] <... exit_group resumed>)   = ?
[pid 19159] +++ exited with 0 +++
[pid 19158] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19158, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19160
./strace-static-x86_64: Process 19160 attached
[pid 19160] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19160] setpgid(0, 0)               = 0
[pid 19160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19160] write(3, "1000", 4)         = 4
[pid 19160] close(3)                    = 0
[pid 19160] write(1, "executing program\n", 18executing program
) = 18
[pid 19160] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19160] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19160] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19160] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19160] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19160] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19160] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19161]}, 88) = 19161
[pid 19160] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19160] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19160] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19161 attached
 <unfinished ...>
[pid 19161] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19161] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19161] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19161] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19160] <... futex resumed>)        = 0
[pid 19160] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19160] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19161] <... futex resumed>)        = 1
[pid 19161] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19161] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19160] <... futex resumed>)        = 0
[pid 19160] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19160] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19161] <... futex resumed>)        = 1
[pid 19161] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19161] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19160] <... futex resumed>)        = 0
[pid 19160] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19160] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19161] <... futex resumed>)        = 1
[pid 19161] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19161] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19160] <... futex resumed>)        = 0
[pid 19160] exit_group(0 <unfinished ...>
[pid 19161] <... futex resumed>)        = 1
[pid 19160] <... exit_group resumed>)   = ?
[pid 19161] +++ exited with 0 +++
[pid 19160] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19160, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19162 attached
, child_tidptr=0x55557c828690) = 19162
[pid 19162] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19162] setpgid(0, 0)               = 0
[pid 19162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19162] write(3, "1000", 4)         = 4
executing program
[pid 19162] close(3)                    = 0
[pid 19162] write(1, "executing program\n", 18) = 18
[pid 19162] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19162] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19162] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19162] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19162] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19162] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19162] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19163 attached
 => {parent_tid=[19163]}, 88) = 19163
[pid 19162] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19162] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19162] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19163] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19163] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19163] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19163] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19162] <... futex resumed>)        = 0
[pid 19162] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19162] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19163] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19163] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19162] <... futex resumed>)        = 0
[pid 19162] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19162] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19163] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19163] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19162] <... futex resumed>)        = 0
[pid 19162] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19162] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19163] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19163] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19162] <... futex resumed>)        = 0
[pid 19162] exit_group(0)               = ?
[pid 19163] +++ exited with 0 +++
[pid 19162] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19162, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19164 attached
 <unfinished ...>
[pid 19164] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19164] setpgid(0, 0)               = 0
[pid 19164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19164
[pid 19164] <... openat resumed>)       = 3
[pid 19164] write(3, "1000", 4)         = 4
executing program
[pid 19164] close(3)                    = 0
[pid 19164] write(1, "executing program\n", 18) = 18
[pid 19164] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19164] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19164] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19164] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19164] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19164] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19164] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19165]}, 88) = 19165
[pid 19164] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19164] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19164] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19165 attached
 <unfinished ...>
[pid 19165] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19165] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19165] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19165] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19164] <... futex resumed>)        = 0
[pid 19164] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19164] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19165] <... futex resumed>)        = 1
[pid 19165] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19165] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19164] <... futex resumed>)        = 0
[pid 19164] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19164] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19165] <... futex resumed>)        = 1
[pid 19165] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19165] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19164] <... futex resumed>)        = 0
[pid 19164] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19164] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19165] <... futex resumed>)        = 1
[pid 19165] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19165] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19164] <... futex resumed>)        = 0
[pid 19164] exit_group(0)               = ?
[pid 19165] <... futex resumed>)        = ?
[pid 19165] +++ exited with 0 +++
[pid 19164] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19164, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19166
./strace-static-x86_64: Process 19166 attached
[pid 19166] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19166] setpgid(0, 0)               = 0
[pid 19166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19166] write(3, "1000", 4)         = 4
[pid 19166] close(3executing program
)                    = 0
[pid 19166] write(1, "executing program\n", 18) = 18
[pid 19166] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19166] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19166] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19166] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19166] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19166] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19166] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19167 attached
 => {parent_tid=[19167]}, 88) = 19167
[pid 19166] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19166] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19166] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19167] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19167] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19167] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19167] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19166] <... futex resumed>)        = 0
[pid 19166] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19166] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19167] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19167] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19166] <... futex resumed>)        = 0
[pid 19166] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19166] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19167] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19167] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19166] <... futex resumed>)        = 0
[pid 19166] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19166] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19167] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19167] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19166] <... futex resumed>)        = 0
[pid 19166] exit_group(0 <unfinished ...>
[pid 19167] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19166] <... exit_group resumed>)   = ?
[pid 19167] <... futex resumed>)        = ?
[pid 19167] +++ exited with 0 +++
[pid 19166] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19166, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19168
./strace-static-x86_64: Process 19168 attached
[pid 19168] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19168] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19168] setpgid(0, 0)               = 0
[pid 19168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19168] write(3, "1000", 4)         = 4
[pid 19168] close(3)                    = 0
[pid 19168] write(1, "executing program\n", 18executing program
) = 18
[pid 19168] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19168] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19168] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19168] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19168] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19168] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19168] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19169]}, 88) = 19169
[pid 19168] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19168] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19168] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19169 attached
 <unfinished ...>
[pid 19169] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19169] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19169] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19169] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19168] <... futex resumed>)        = 0
[pid 19168] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19168] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19169] <... futex resumed>)        = 1
[pid 19169] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19169] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19168] <... futex resumed>)        = 0
[pid 19168] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19168] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19169] <... futex resumed>)        = 1
[pid 19169] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19169] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19168] <... futex resumed>)        = 0
[pid 19168] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19168] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19169] <... futex resumed>)        = 1
[pid 19169] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19169] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19168] <... futex resumed>)        = 0
[pid 19168] exit_group(0)               = ?
[pid 19169] <... futex resumed>)        = ?
[pid 19169] +++ exited with 0 +++
[pid 19168] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19168, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19170
./strace-static-x86_64: Process 19170 attached
[pid 19170] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19170] setpgid(0, 0)               = 0
[pid 19170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19170] write(3, "1000", 4)         = 4
[pid 19170] close(3)                    = 0
[pid 19170] write(1, "executing program\n", 18executing program
) = 18
[pid 19170] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19170] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19170] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19170] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19170] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19170] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19170] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19171 attached
 => {parent_tid=[19171]}, 88) = 19171
[pid 19170] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19170] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19170] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19171] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19171] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19171] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19171] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19170] <... futex resumed>)        = 0
[pid 19170] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19170] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19171] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19171] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19170] <... futex resumed>)        = 0
[pid 19170] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19170] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19171] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19171] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19170] <... futex resumed>)        = 0
[pid 19170] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19170] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19171] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19171] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19170] <... futex resumed>)        = 0
[pid 19170] exit_group(0)               = ?
[pid 19171] +++ exited with 0 +++
[pid 19170] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19170, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19172
./strace-static-x86_64: Process 19172 attached
[pid 19172] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19172] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19172] setpgid(0, 0)               = 0
[pid 19172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19172] write(3, "1000", 4)         = 4
[pid 19172] close(3executing program
)                    = 0
[pid 19172] write(1, "executing program\n", 18) = 18
[pid 19172] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19172] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19172] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19172] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19172] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19172] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19172] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19173]}, 88) = 19173
./strace-static-x86_64: Process 19173 attached
[pid 19172] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19173] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19172] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19173] <... set_robust_list resumed>) = 0
[pid 19172] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19173] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19172] <... futex resumed>)        = 0
[pid 19173] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19173] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19173] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19173] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19172] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19172] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19173] <... futex resumed>)        = 0
[pid 19173] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19172] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19173] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19173] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19172] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19172] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19173] <... futex resumed>)        = 0
[pid 19173] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19172] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19173] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19172] <... futex resumed>)        = 0
[pid 19172] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19172] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19173] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19173] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19172] <... futex resumed>)        = 0
[pid 19173] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19172] exit_group(0)               = ?
[pid 19173] <... futex resumed>)        = ?
[pid 19173] +++ exited with 0 +++
[pid 19172] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19172, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19174
./strace-static-x86_64: Process 19174 attached
[pid 19174] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19174] setpgid(0, 0)               = 0
[pid 19174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19174] write(3, "1000", 4)         = 4
[pid 19174] close(3)                    = 0
[pid 19174] write(1, "executing program\n", 18executing program
) = 18
[pid 19174] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19174] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19174] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19174] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19174] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19174] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19174] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19175]}, 88) = 19175
./strace-static-x86_64: Process 19175 attached
[pid 19174] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19174] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19174] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19175] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19175] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19175] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19175] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19174] <... futex resumed>)        = 0
[pid 19174] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19174] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19175] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19175] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19174] <... futex resumed>)        = 0
[pid 19174] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19174] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19175] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19175] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19174] <... futex resumed>)        = 0
[pid 19174] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19174] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19175] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19175] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19174] <... futex resumed>)        = 0
[pid 19174] exit_group(0)               = ?
[pid 19175] +++ exited with 0 +++
[pid 19174] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19174, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19176 attached
, child_tidptr=0x55557c828690) = 19176
[pid 19176] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19176] setpgid(0, 0)               = 0
[pid 19176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19176] write(3, "1000", 4)         = 4
[pid 19176] close(3)                    = 0
executing program
[pid 19176] write(1, "executing program\n", 18) = 18
[pid 19176] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19176] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19176] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19176] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19176] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19176] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19176] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19177 attached
 => {parent_tid=[19177]}, 88) = 19177
[pid 19176] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19176] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19176] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19177] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19177] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19177] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19177] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19176] <... futex resumed>)        = 0
[pid 19176] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19177] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19176] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19177] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19177] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19177] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19176] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19176] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19177] <... futex resumed>)        = 0
[pid 19177] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19176] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19177] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19176] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19176] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19176] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19177] <... futex resumed>)        = 1
[pid 19176] <... futex resumed>)        = 0
[pid 19176] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19177] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19177] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19177] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19176] <... futex resumed>)        = 0
[pid 19176] exit_group(0)               = ?
[pid 19177] <... futex resumed>)        = ?
[pid 19177] +++ exited with 0 +++
[pid 19176] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19176, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19178
./strace-static-x86_64: Process 19178 attached
[pid 19178] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19178] setpgid(0, 0)               = 0
[pid 19178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19178] write(3, "1000", 4)         = 4
[pid 19178] close(3)                    = 0
[pid 19178] write(1, "executing program\n", 18executing program
) = 18
[pid 19178] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19178] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19178] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19178] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19178] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19178] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19178] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19179]}, 88) = 19179
./strace-static-x86_64: Process 19179 attached
[pid 19178] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19178] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19178] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19179] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19179] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19179] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19179] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19178] <... futex resumed>)        = 0
[pid 19178] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19178] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19179] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19179] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19178] <... futex resumed>)        = 0
[pid 19178] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19178] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19179] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19179] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19178] <... futex resumed>)        = 0
[pid 19178] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19178] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19179] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19179] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19178] <... futex resumed>)        = 0
[pid 19178] exit_group(0)               = ?
[pid 19179] +++ exited with 0 +++
[pid 19178] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19178, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19180
./strace-static-x86_64: Process 19180 attached
[pid 19180] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19180] setpgid(0, 0)               = 0
[pid 19180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19180] write(3, "1000", 4)         = 4
[pid 19180] close(3)                    = 0
executing program
[pid 19180] write(1, "executing program\n", 18) = 18
[pid 19180] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19180] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19180] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19180] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19180] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19180] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19180] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19181]}, 88) = 19181
[pid 19180] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19180] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19180] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19181 attached
 <unfinished ...>
[pid 19181] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19181] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19181] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19181] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19180] <... futex resumed>)        = 0
[pid 19180] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19180] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19181] <... futex resumed>)        = 1
[pid 19181] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19181] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19180] <... futex resumed>)        = 0
[pid 19180] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19180] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19181] <... futex resumed>)        = 1
[pid 19181] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19181] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19180] <... futex resumed>)        = 0
[pid 19180] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19180] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19181] <... futex resumed>)        = 1
[pid 19181] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19181] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19180] <... futex resumed>)        = 0
[pid 19180] exit_group(0)               = ?
[pid 19181] <... futex resumed>)        = ?
[pid 19181] +++ exited with 0 +++
[pid 19180] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19180, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19182
./strace-static-x86_64: Process 19182 attached
[pid 19182] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19182] setpgid(0, 0)               = 0
[pid 19182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19182] write(3, "1000", 4)         = 4
[pid 19182] close(3)                    = 0
[pid 19182] write(1, "executing program\n", 18executing program
) = 18
[pid 19182] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19182] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19182] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19182] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19182] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19182] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19182] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19183]}, 88) = 19183
./strace-static-x86_64: Process 19183 attached
[pid 19182] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19182] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19182] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19183] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19183] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19183] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19183] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19182] <... futex resumed>)        = 0
[pid 19182] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19182] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19183] <... futex resumed>)        = 1
[pid 19183] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19183] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19182] <... futex resumed>)        = 0
[pid 19182] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19182] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19183] <... futex resumed>)        = 1
[pid 19183] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19183] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19182] <... futex resumed>)        = 0
[pid 19182] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19182] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19183] <... futex resumed>)        = 1
[pid 19183] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19183] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19182] <... futex resumed>)        = 0
[pid 19182] exit_group(0)               = ?
[pid 19183] +++ exited with 0 +++
[pid 19182] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19182, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19184 attached
, child_tidptr=0x55557c828690) = 19184
[pid 19184] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19184] setpgid(0, 0)               = 0
[pid 19184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19184] write(3, "1000", 4)         = 4
[pid 19184] close(3)                    = 0
[pid 19184] write(1, "executing program\n", 18executing program
) = 18
[pid 19184] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19184] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19184] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19184] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19184] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19184] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19184] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19185]}, 88) = 19185
./strace-static-x86_64: Process 19185 attached
[pid 19184] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19184] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19184] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19185] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19185] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19185] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19185] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19185] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19184] <... futex resumed>)        = 0
[pid 19184] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19184] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19185] <... futex resumed>)        = 0
[pid 19185] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19185] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19184] <... futex resumed>)        = 0
[pid 19184] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19184] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19185] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19185] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19184] <... futex resumed>)        = 0
[pid 19184] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19184] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19185] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19185] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19184] <... futex resumed>)        = 0
[pid 19184] exit_group(0)               = ?
[pid 19185] +++ exited with 0 +++
[pid 19184] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19184, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19186 attached
, child_tidptr=0x55557c828690) = 19186
[pid 19186] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19186] setpgid(0, 0)               = 0
[pid 19186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19186] write(3, "1000", 4)         = 4
[pid 19186] close(3executing program
)                    = 0
[pid 19186] write(1, "executing program\n", 18) = 18
[pid 19186] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19186] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19186] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19186] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19186] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19186] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19186] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19187]}, 88) = 19187
./strace-static-x86_64: Process 19187 attached
[pid 19187] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19186] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19187] <... set_robust_list resumed>) = 0
[pid 19186] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19187] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19186] <... futex resumed>)        = 0
[pid 19187] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19186] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19187] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19187] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19186] <... futex resumed>)        = 0
[pid 19186] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19186] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19187] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19187] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19186] <... futex resumed>)        = 0
[pid 19186] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19186] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19187] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19187] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19186] <... futex resumed>)        = 0
[pid 19186] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19186] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19187] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19187] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19186] <... futex resumed>)        = 0
[pid 19186] exit_group(0)               = ?
[pid 19187] +++ exited with 0 +++
[pid 19186] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19186, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19188 attached
 <unfinished ...>
[pid 19188] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19188] setpgid(0, 0)               = 0
[pid 19188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19188
[pid 19188] <... openat resumed>)       = 3
[pid 19188] write(3, "1000", 4)         = 4
[pid 19188] close(3executing program
)                    = 0
[pid 19188] write(1, "executing program\n", 18) = 18
[pid 19188] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19188] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19188] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19188] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19188] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19188] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19188] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19189]}, 88) = 19189
./strace-static-x86_64: Process 19189 attached
[pid 19189] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19188] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19189] <... set_robust_list resumed>) = 0
[pid 19189] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19188] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19189] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19188] <... futex resumed>)        = 0
[pid 19189] <... 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 19188] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19189] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19188] <... futex resumed>)        = 0
[pid 19189] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19188] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19189] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19188] <... futex resumed>)        = 0
[pid 19189] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19188] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19189] <... futex resumed>)        = 0
[pid 19188] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19189] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19188] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19189] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19188] <... futex resumed>)        = 0
[pid 19189] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19188] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19189] <... futex resumed>)        = 0
[pid 19188] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19189] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19188] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19189] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19188] <... futex resumed>)        = 0
[pid 19189] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19188] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19189] <... futex resumed>)        = 0
[pid 19188] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19189] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19188] exit_group(0 <unfinished ...>
[pid 19189] <... futex resumed>)        = ?
[pid 19188] <... exit_group resumed>)   = ?
[pid 19189] +++ exited with 0 +++
[pid 19188] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19188, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19190 attached
, child_tidptr=0x55557c828690) = 19190
[pid 19190] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19190] setpgid(0, 0)               = 0
[pid 19190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19190] write(3, "1000", 4)         = 4
[pid 19190] close(3executing program
)                    = 0
[pid 19190] write(1, "executing program\n", 18) = 18
[pid 19190] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19190] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19190] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19190] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19190] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19190] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19190] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19191 attached
 => {parent_tid=[19191]}, 88) = 19191
[pid 19190] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19191] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19190] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19191] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19190] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19190] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19191] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19191] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19191] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19190] <... futex resumed>)        = 0
[pid 19191] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19190] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19191] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19190] <... futex resumed>)        = 0
[pid 19191] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19190] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19191] <... futex resumed>)        = 0
[pid 19190] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19191] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19190] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19191] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19190] <... futex resumed>)        = 0
[pid 19191] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19190] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19191] <... futex resumed>)        = 0
[pid 19190] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19191] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19190] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19191] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19190] <... futex resumed>)        = 0
[pid 19191] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19190] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19191] <... futex resumed>)        = 0
[pid 19190] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19191] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19190] exit_group(0)               = ?
[pid 19191] <... futex resumed>)        = ?
[pid 19191] +++ exited with 0 +++
[pid 19190] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19190, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19192 attached
, child_tidptr=0x55557c828690) = 19192
[pid 19192] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19192] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19192] setpgid(0, 0)               = 0
[pid 19192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19192] write(3, "1000", 4)         = 4
[pid 19192] close(3)                    = 0
[pid 19192] write(1, "executing program\n", 18executing program
) = 18
[pid 19192] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19192] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19192] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19192] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19192] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19192] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19192] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19193 attached
 => {parent_tid=[19193]}, 88) = 19193
[pid 19192] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19192] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19192] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19193] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19193] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19193] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19193] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19192] <... futex resumed>)        = 0
[pid 19193] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19192] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19193] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19192] <... futex resumed>)        = 0
[pid 19193] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19192] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19193] <... futex resumed>)        = 0
[pid 19192] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19193] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19192] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19193] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19192] <... futex resumed>)        = 0
[pid 19192] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19193] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19192] <... futex resumed>)        = 0
[pid 19193] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19192] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19193] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19192] <... futex resumed>)        = 0
[pid 19193] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19192] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19193] <... futex resumed>)        = 0
[pid 19192] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19193] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19192] exit_group(0 <unfinished ...>
[pid 19193] <... futex resumed>)        = ?
[pid 19192] <... exit_group resumed>)   = ?
[pid 19193] +++ exited with 0 +++
[pid 19192] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19192, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19194 attached
, child_tidptr=0x55557c828690) = 19194
[pid 19194] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19194] setpgid(0, 0)               = 0
[pid 19194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19194] write(3, "1000", 4)         = 4
[pid 19194] close(3)                    = 0
[pid 19194] write(1, "executing program\n", 18executing program
) = 18
[pid 19194] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19194] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19194] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19194] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19194] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19194] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19194] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19195 attached
 <unfinished ...>
[pid 19195] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19195] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19195] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19194] <... clone3 resumed> => {parent_tid=[19195]}, 88) = 19195
[pid 19194] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19194] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19195] <... futex resumed>)        = 0
[pid 19194] <... futex resumed>)        = 1
[pid 19195] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19194] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19195] <... 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 19195] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19194] <... futex resumed>)        = 0
[pid 19195] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19194] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19195] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19194] <... futex resumed>)        = 0
[pid 19195] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19194] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19195] <... futex resumed>)        = 0
[pid 19194] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19195] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19194] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19195] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19194] <... futex resumed>)        = 0
[pid 19195] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19194] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19195] <... futex resumed>)        = 0
[pid 19194] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19195] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19194] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19194] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19195] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19195] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19195] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19194] <... futex resumed>)        = 0
[pid 19194] exit_group(0)               = ?
[pid 19195] <... futex resumed>)        = ?
[pid 19195] +++ exited with 0 +++
[pid 19194] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19194, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19196
./strace-static-x86_64: Process 19196 attached
[pid 19196] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19196] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19196] setpgid(0, 0)               = 0
[pid 19196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19196] write(3, "1000", 4)         = 4
[pid 19196] close(3)                    = 0
executing program
[pid 19196] write(1, "executing program\n", 18) = 18
[pid 19196] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19196] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19196] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19196] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19196] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19196] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19196] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19197]}, 88) = 19197
./strace-static-x86_64: Process 19197 attached
[pid 19196] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19196] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19196] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19197] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19197] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19197] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19197] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19196] <... futex resumed>)        = 0
[pid 19197] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19196] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19197] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19196] <... futex resumed>)        = 0
[pid 19197] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19196] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19197] <... futex resumed>)        = 0
[pid 19196] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19197] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19196] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19197] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19196] <... futex resumed>)        = 0
[pid 19197] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19196] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19197] <... futex resumed>)        = 0
[pid 19196] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19197] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19196] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19197] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19196] <... futex resumed>)        = 0
[pid 19197] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19196] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19197] <... futex resumed>)        = 0
[pid 19196] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19197] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19196] exit_group(0 <unfinished ...>
[pid 19197] <... futex resumed>)        = ?
[pid 19196] <... exit_group resumed>)   = ?
[pid 19197] +++ exited with 0 +++
[pid 19196] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19196, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19198 attached
, child_tidptr=0x55557c828690) = 19198
[pid 19198] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19198] setpgid(0, 0)               = 0
[pid 19198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19198] write(3, "1000", 4)         = 4
[pid 19198] close(3)                    = 0
[pid 19198] write(1, "executing program\n", 18executing program
) = 18
[pid 19198] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19198] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19198] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19198] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19198] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19198] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19198] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19199 attached
 <unfinished ...>
[pid 19199] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19198] <... clone3 resumed> => {parent_tid=[19199]}, 88) = 19199
[pid 19199] <... set_robust_list resumed>) = 0
[pid 19199] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19199] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19198] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19198] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19199] <... futex resumed>)        = 0
[pid 19198] <... futex resumed>)        = 1
[pid 19198] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19199] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19199] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19198] <... futex resumed>)        = 0
[pid 19199] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19198] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19199] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19198] <... futex resumed>)        = 0
[pid 19199] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19198] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19199] <... futex resumed>)        = 0
[pid 19198] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19199] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19198] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19199] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19198] <... futex resumed>)        = 0
[pid 19199] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19198] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19199] <... futex resumed>)        = 0
[pid 19198] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19199] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19198] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19199] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19198] <... futex resumed>)        = 0
[pid 19199] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19198] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19199] <... futex resumed>)        = 0
[pid 19198] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19199] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19198] exit_group(0 <unfinished ...>
[pid 19199] <... futex resumed>)        = ?
[pid 19198] <... exit_group resumed>)   = ?
[pid 19199] +++ exited with 0 +++
[pid 19198] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19198, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19200 attached
, child_tidptr=0x55557c828690) = 19200
[pid 19200] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19200] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19200] setpgid(0, 0)               = 0
[pid 19200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19200] write(3, "1000", 4)         = 4
[pid 19200] close(3)                    = 0
[pid 19200] write(1, "executing program\n", 18executing program
) = 18
[pid 19200] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19200] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19200] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19200] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19200] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19200] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19200] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19201 attached
 => {parent_tid=[19201]}, 88) = 19201
[pid 19201] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19200] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19201] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19200] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19201] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19200] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19201] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19200] <... futex resumed>)        = 0
[pid 19201] <... 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 19200] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19201] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19200] <... futex resumed>)        = 0
[pid 19201] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19200] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19201] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19200] <... futex resumed>)        = 0
[pid 19201] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19200] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19201] <... futex resumed>)        = 0
[pid 19200] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19201] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19200] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19201] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19200] <... futex resumed>)        = 0
[pid 19201] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19200] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19201] <... futex resumed>)        = 0
[pid 19200] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19201] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19200] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19201] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19200] <... futex resumed>)        = 0
[pid 19201] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19200] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19201] <... futex resumed>)        = 0
[pid 19200] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19201] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19200] exit_group(0 <unfinished ...>
[pid 19201] <... futex resumed>)        = ?
[pid 19200] <... exit_group resumed>)   = ?
[pid 19201] +++ exited with 0 +++
[pid 19200] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19200, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19202
./strace-static-x86_64: Process 19202 attached
[pid 19202] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19202] setpgid(0, 0)               = 0
[pid 19202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19202] write(3, "1000", 4)         = 4
[pid 19202] close(3executing program
)                    = 0
[pid 19202] write(1, "executing program\n", 18) = 18
[pid 19202] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19202] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19202] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19202] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19202] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19202] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19202] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19203]}, 88) = 19203
./strace-static-x86_64: Process 19203 attached
[pid 19203] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19203] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19203] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19202] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19202] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19203] <... futex resumed>)        = 0
[pid 19202] <... futex resumed>)        = 1
[pid 19203] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19202] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19203] <... 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 19203] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19203] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19202] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19202] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19203] <... futex resumed>)        = 0
[pid 19202] <... futex resumed>)        = 1
[pid 19203] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19202] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19203] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19203] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19202] <... futex resumed>)        = 0
[pid 19203] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19202] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19203] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19202] <... futex resumed>)        = 0
[pid 19203] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19202] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19203] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19203] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19202] <... futex resumed>)        = 0
[pid 19203] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19202] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19203] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19202] <... futex resumed>)        = 0
[pid 19202] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19203] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19203] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19203] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19202] <... futex resumed>)        = 0
[pid 19202] exit_group(0 <unfinished ...>
[pid 19203] <... futex resumed>)        = ?
[pid 19202] <... exit_group resumed>)   = ?
[pid 19203] +++ exited with 0 +++
[pid 19202] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19202, 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 19204 attached
, child_tidptr=0x55557c828690) = 19204
[pid 19204] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19204] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19204] setpgid(0, 0)               = 0
[pid 19204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19204] write(3, "1000", 4)         = 4
[pid 19204] close(3)                    = 0
[pid 19204] write(1, "executing program\n", 18) = 18
[pid 19204] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19204] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19204] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19204] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19204] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19204] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19204] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19205 attached
 => {parent_tid=[19205]}, 88) = 19205
[pid 19205] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19204] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19205] <... set_robust_list resumed>) = 0
[pid 19204] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19205] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19204] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19205] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19204] <... futex resumed>)        = 0
[pid 19205] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19204] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19205] <... 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 19205] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19204] <... futex resumed>)        = 0
[pid 19205] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19204] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19205] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19204] <... futex resumed>)        = 0
[pid 19205] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19204] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19205] <... futex resumed>)        = 0
[pid 19204] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19205] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19204] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19205] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19204] <... futex resumed>)        = 0
[pid 19205] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19204] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19205] <... futex resumed>)        = 0
[pid 19204] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19205] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19204] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19205] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19204] <... futex resumed>)        = 0
[pid 19205] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19204] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19205] <... futex resumed>)        = 0
[pid 19204] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19205] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19204] exit_group(0 <unfinished ...>
[pid 19205] <... futex resumed>)        = ?
[pid 19204] <... exit_group resumed>)   = ?
[pid 19205] +++ exited with 0 +++
[pid 19204] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19204, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19206
./strace-static-x86_64: Process 19206 attached
[pid 19206] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19206] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19206] setpgid(0, 0)               = 0
[pid 19206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19206] write(3, "1000", 4)         = 4
[pid 19206] close(3)                    = 0
executing program
[pid 19206] write(1, "executing program\n", 18) = 18
[pid 19206] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19206] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19206] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19206] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19206] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19206] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19206] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19207 attached
 <unfinished ...>
[pid 19207] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19206] <... clone3 resumed> => {parent_tid=[19207]}, 88) = 19207
[pid 19207] <... set_robust_list resumed>) = 0
[pid 19206] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19207] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19206] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19207] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19206] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19207] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19206] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19207] <... 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 19207] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19206] <... futex resumed>)        = 0
[pid 19207] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19206] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19207] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19206] <... futex resumed>)        = 0
[pid 19206] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19207] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19206] <... futex resumed>)        = 0
[pid 19207] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19206] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19207] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19206] <... futex resumed>)        = 0
[pid 19207] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19206] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19207] <... futex resumed>)        = 0
[pid 19206] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19207] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19206] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19207] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19206] <... futex resumed>)        = 0
[pid 19206] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19207] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19206] <... futex resumed>)        = 0
[pid 19207] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19206] exit_group(0 <unfinished ...>
[pid 19207] <... futex resumed>)        = ?
[pid 19206] <... exit_group resumed>)   = ?
[pid 19207] +++ exited with 0 +++
[pid 19206] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19206, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19208 attached
, child_tidptr=0x55557c828690) = 19208
[pid 19208] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19208] setpgid(0, 0)               = 0
[pid 19208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19208] write(3, "1000", 4executing program
)         = 4
[pid 19208] close(3)                    = 0
[pid 19208] write(1, "executing program\n", 18) = 18
[pid 19208] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19208] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19208] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19208] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19208] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19208] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19208] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19209 attached
 => {parent_tid=[19209]}, 88) = 19209
[pid 19208] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19208] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19208] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19209] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19209] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19209] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19209] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19208] <... futex resumed>)        = 0
[pid 19209] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19208] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19209] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19208] <... futex resumed>)        = 0
[pid 19209] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19208] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19209] <... futex resumed>)        = 0
[pid 19208] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19209] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19208] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19209] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19208] <... futex resumed>)        = 0
[pid 19209] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19208] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19209] <... futex resumed>)        = 0
[pid 19208] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19209] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19208] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19209] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19208] <... futex resumed>)        = 0
[pid 19209] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19208] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19209] <... futex resumed>)        = 0
[pid 19208] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19209] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19208] exit_group(0 <unfinished ...>
[pid 19209] <... futex resumed>)        = ?
[pid 19208] <... exit_group resumed>)   = ?
[pid 19209] +++ exited with 0 +++
[pid 19208] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19208, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19210 attached
, child_tidptr=0x55557c828690) = 19210
[pid 19210] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19210] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19210] setpgid(0, 0)               = 0
[pid 19210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19210] write(3, "1000", 4)         = 4
[pid 19210] close(3)                    = 0
executing program
[pid 19210] write(1, "executing program\n", 18) = 18
[pid 19210] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19210] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19210] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19210] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19210] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19210] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19210] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19211]}, 88) = 19211
./strace-static-x86_64: Process 19211 attached
[pid 19210] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19211] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19210] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19211] <... set_robust_list resumed>) = 0
[pid 19210] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19211] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19210] <... futex resumed>)        = 0
[pid 19211] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19210] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19211] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19211] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19210] <... futex resumed>)        = 0
[pid 19211] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19210] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19211] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19210] <... futex resumed>)        = 0
[pid 19211] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19210] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19211] <... futex resumed>)        = 0
[pid 19210] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19211] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19210] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19211] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19210] <... futex resumed>)        = 0
[pid 19211] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19210] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19211] <... futex resumed>)        = 0
[pid 19210] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19211] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19210] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19211] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19210] <... futex resumed>)        = 0
[pid 19211] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19210] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19211] <... futex resumed>)        = 0
[pid 19210] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19211] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19210] exit_group(0 <unfinished ...>
[pid 19211] <... futex resumed>)        = ?
[pid 19210] <... exit_group resumed>)   = ?
[pid 19211] +++ exited with 0 +++
[pid 19210] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19210, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19212
./strace-static-x86_64: Process 19212 attached
[pid 19212] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19212] setpgid(0, 0)               = 0
[pid 19212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19212] write(3, "1000", 4)         = 4
[pid 19212] close(3)                    = 0
[pid 19212] write(1, "executing program\n", 18executing program
) = 18
[pid 19212] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19212] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19212] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19212] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19212] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19212] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19212] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19213 attached
 <unfinished ...>
[pid 19213] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19213] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19213] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19212] <... clone3 resumed> => {parent_tid=[19213]}, 88) = 19213
[pid 19212] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19212] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19213] <... futex resumed>)        = 0
[pid 19212] <... futex resumed>)        = 1
[pid 19213] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19212] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19213] <... 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 19213] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19213] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19212] <... futex resumed>)        = 0
[pid 19212] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19213] <... futex resumed>)        = 0
[pid 19212] <... futex resumed>)        = 1
[pid 19213] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19212] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19213] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19213] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19212] <... futex resumed>)        = 0
[pid 19213] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19212] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19213] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19212] <... futex resumed>)        = 0
[pid 19213] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19212] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19213] <... futex resumed>)        = 0
[pid 19212] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19213] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19212] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19213] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19212] <... futex resumed>)        = 0
[pid 19213] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19212] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19213] <... futex resumed>)        = 0
[pid 19212] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19213] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19212] exit_group(0 <unfinished ...>
[pid 19213] <... futex resumed>)        = ?
[pid 19212] <... exit_group resumed>)   = ?
[pid 19213] +++ exited with 0 +++
[pid 19212] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19212, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19214 attached
 <unfinished ...>
[pid 19214] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19214] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19214
[pid 19214] <... prctl resumed>)        = 0
[pid 19214] setpgid(0, 0)               = 0
[pid 19214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19214] write(3, "1000", 4)         = 4
[pid 19214] close(3)                    = 0
executing program
[pid 19214] write(1, "executing program\n", 18) = 18
[pid 19214] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19214] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19214] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19214] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19214] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19214] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19214] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19215 attached
 => {parent_tid=[19215]}, 88) = 19215
[pid 19214] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19214] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19214] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19215] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19215] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19215] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19215] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19214] <... futex resumed>)        = 0
[pid 19214] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19214] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19215] <... futex resumed>)        = 1
[pid 19215] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19215] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19214] <... futex resumed>)        = 0
[pid 19214] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19214] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19215] <... futex resumed>)        = 1
[pid 19215] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19215] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19214] <... futex resumed>)        = 0
[pid 19214] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19214] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19215] <... futex resumed>)        = 1
[pid 19215] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19215] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19214] <... futex resumed>)        = 0
[pid 19214] exit_group(0)               = ?
[pid 19215] <... futex resumed>)        = ?
[pid 19215] +++ exited with 0 +++
[pid 19214] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19214, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19216
./strace-static-x86_64: Process 19216 attached
[pid 19216] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19216] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19216] setpgid(0, 0)               = 0
[pid 19216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19216] write(3, "1000", 4)         = 4
[pid 19216] close(3)                    = 0
executing program
[pid 19216] write(1, "executing program\n", 18) = 18
[pid 19216] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19216] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19216] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19216] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19216] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19216] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19216] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19217]}, 88) = 19217
[pid 19216] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19216] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19216] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19217 attached
 <unfinished ...>
[pid 19217] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19217] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19217] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19217] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19216] <... futex resumed>)        = 0
[pid 19216] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19216] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19217] <... futex resumed>)        = 1
[pid 19217] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19217] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19216] <... futex resumed>)        = 0
[pid 19216] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19216] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19217] <... futex resumed>)        = 1
[pid 19217] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19217] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19216] <... futex resumed>)        = 0
[pid 19216] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19216] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19217] <... futex resumed>)        = 1
[pid 19217] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19217] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19216] <... futex resumed>)        = 0
[pid 19216] exit_group(0)               = ?
[pid 19217] <... futex resumed>)        = ?
[pid 19217] +++ exited with 0 +++
[pid 19216] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19216, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19218
./strace-static-x86_64: Process 19218 attached
[pid 19218] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19218] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19218] setpgid(0, 0)               = 0
[pid 19218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19218] write(3, "1000", 4)         = 4
[pid 19218] close(3executing program
)                    = 0
[pid 19218] write(1, "executing program\n", 18) = 18
[pid 19218] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19218] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19218] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19218] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19218] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19218] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19218] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19219]}, 88) = 19219
[pid 19218] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19218] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19218] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19219 attached
 <unfinished ...>
[pid 19219] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19219] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19219] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19219] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19218] <... futex resumed>)        = 0
[pid 19218] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19218] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19219] <... futex resumed>)        = 1
[pid 19219] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19219] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19218] <... futex resumed>)        = 0
[pid 19218] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19218] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19219] <... futex resumed>)        = 1
[pid 19219] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19219] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19218] <... futex resumed>)        = 0
[pid 19218] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19218] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19219] <... futex resumed>)        = 1
[pid 19219] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19219] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19218] <... futex resumed>)        = 0
[pid 19218] exit_group(0)               = ?
[pid 19219] <... futex resumed>)        = ?
[pid 19219] +++ exited with 0 +++
[pid 19218] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19218, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19220 attached
, child_tidptr=0x55557c828690) = 19220
[pid 19220] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19220] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19220] setpgid(0, 0)               = 0
[pid 19220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19220] write(3, "1000", 4)         = 4
[pid 19220] close(3executing program
)                    = 0
[pid 19220] write(1, "executing program\n", 18) = 18
[pid 19220] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19220] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19220] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19220] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19220] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19220] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19220] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19221 attached
 => {parent_tid=[19221]}, 88) = 19221
[pid 19221] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19220] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19221] <... set_robust_list resumed>) = 0
[pid 19220] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19221] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19220] <... futex resumed>)        = 0
[pid 19221] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19220] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19221] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19221] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19220] <... futex resumed>)        = 0
[pid 19220] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19220] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19221] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19221] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19220] <... futex resumed>)        = 0
[pid 19220] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19220] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19221] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19221] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19220] <... futex resumed>)        = 0
[pid 19220] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19220] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19221] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19221] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19220] <... futex resumed>)        = 0
[pid 19220] exit_group(0)               = ?
[pid 19221] +++ exited with 0 +++
[pid 19220] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19220, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19222
./strace-static-x86_64: Process 19222 attached
[pid 19222] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19222] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19222] setpgid(0, 0)               = 0
[pid 19222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19222] write(3, "1000", 4)         = 4
[pid 19222] close(3)                    = 0
[pid 19222] write(1, "executing program\n", 18executing program
) = 18
[pid 19222] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19222] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19222] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19222] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19222] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19222] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19222] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19223 attached
 => {parent_tid=[19223]}, 88) = 19223
[pid 19223] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19222] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19223] <... set_robust_list resumed>) = 0
[pid 19222] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19223] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19222] <... futex resumed>)        = 0
[pid 19223] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19222] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19223] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19223] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19222] <... futex resumed>)        = 0
[pid 19222] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19222] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19223] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19223] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19222] <... futex resumed>)        = 0
[pid 19222] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19222] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19223] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19223] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19222] <... futex resumed>)        = 0
[pid 19222] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19222] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19223] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19223] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19223] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19222] <... futex resumed>)        = 0
[pid 19222] exit_group(0)               = ?
[pid 19223] <... futex resumed>)        = ?
[pid 19223] +++ exited with 0 +++
[pid 19222] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19222, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19224 attached
, child_tidptr=0x55557c828690) = 19224
[pid 19224] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19224] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19224] setpgid(0, 0)               = 0
[pid 19224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19224] write(3, "1000", 4)         = 4
[pid 19224] close(3executing program
)                    = 0
[pid 19224] write(1, "executing program\n", 18) = 18
[pid 19224] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19224] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19224] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19224] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19224] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19224] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19224] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19225 attached
 => {parent_tid=[19225]}, 88) = 19225
[pid 19224] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19224] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19224] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19225] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19225] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19225] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19225] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19224] <... futex resumed>)        = 0
[pid 19224] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19224] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19225] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19225] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19225] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19224] <... futex resumed>)        = 0
[pid 19224] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19225] <... futex resumed>)        = 0
[pid 19224] <... futex resumed>)        = 1
[pid 19225] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19224] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19225] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19225] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19225] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19224] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19224] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19225] <... futex resumed>)        = 0
[pid 19224] <... futex resumed>)        = 1
[pid 19225] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19224] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19225] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19225] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19224] <... futex resumed>)        = 0
[pid 19225] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19224] exit_group(0 <unfinished ...>
[pid 19225] <... futex resumed>)        = ?
[pid 19224] <... exit_group resumed>)   = ?
[pid 19225] +++ exited with 0 +++
[pid 19224] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19224, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19226
./strace-static-x86_64: Process 19226 attached
[pid 19226] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19226] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19226] setpgid(0, 0)               = 0
[pid 19226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19226] write(3, "1000", 4)         = 4
[pid 19226] close(3)                    = 0
[pid 19226] write(1, "executing program\n", 18executing program
) = 18
[pid 19226] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19226] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19226] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19226] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19226] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19226] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19226] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19227 attached
 => {parent_tid=[19227]}, 88) = 19227
[pid 19227] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19226] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19227] <... set_robust_list resumed>) = 0
[pid 19226] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19227] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19226] <... futex resumed>)        = 0
[pid 19227] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19226] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19227] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19227] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19226] <... futex resumed>)        = 0
[pid 19226] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19226] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19227] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19227] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19226] <... futex resumed>)        = 0
[pid 19226] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19226] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19227] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19227] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19226] <... futex resumed>)        = 0
[pid 19226] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19226] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19227] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19227] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19226] <... futex resumed>)        = 0
[pid 19226] exit_group(0)               = ?
[pid 19227] +++ exited with 0 +++
[pid 19226] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19226, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19228
./strace-static-x86_64: Process 19228 attached
[pid 19228] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19228] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19228] setpgid(0, 0)               = 0
[pid 19228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19228] write(3, "1000", 4)         = 4
[pid 19228] close(3)                    = 0
executing program
[pid 19228] write(1, "executing program\n", 18) = 18
[pid 19228] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19228] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19228] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19228] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19228] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19228] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19228] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19229]}, 88) = 19229
./strace-static-x86_64: Process 19229 attached
[pid 19228] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19229] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19228] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19229] <... set_robust_list resumed>) = 0
[pid 19229] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19228] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19229] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19228] <... futex resumed>)        = 0
[pid 19229] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19228] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19229] <... 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 19229] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19228] <... futex resumed>)        = 0
[pid 19228] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19229] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19228] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19229] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19229] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19228] <... futex resumed>)        = 0
[pid 19228] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19228] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19229] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19229] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19228] <... futex resumed>)        = 0
[pid 19228] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19228] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19229] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19229] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19228] <... futex resumed>)        = 0
[pid 19228] exit_group(0)               = ?
[pid 19229] +++ exited with 0 +++
[pid 19228] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19228, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19230 attached
 <unfinished ...>
[pid 19230] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19230] setpgid(0, 0)               = 0
[pid 19230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19230
[pid 19230] <... openat resumed>)       = 3
[pid 19230] write(3, "1000", 4)         = 4
executing program
[pid 19230] close(3)                    = 0
[pid 19230] write(1, "executing program\n", 18) = 18
[pid 19230] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19230] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19230] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19230] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19230] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19230] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19230] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19231 attached
 => {parent_tid=[19231]}, 88) = 19231
[pid 19231] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19230] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19231] <... set_robust_list resumed>) = 0
[pid 19230] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19230] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19231] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19230] <... futex resumed>)        = 0
[pid 19231] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19230] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19231] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19231] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19230] <... futex resumed>)        = 0
[pid 19230] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19230] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19231] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19231] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19230] <... futex resumed>)        = 0
[pid 19230] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19230] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19231] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19231] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19230] <... futex resumed>)        = 0
[pid 19230] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19230] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19231] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19231] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19230] <... futex resumed>)        = 0
[pid 19230] exit_group(0)               = ?
[pid 19231] +++ exited with 0 +++
[pid 19230] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19230, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19232
./strace-static-x86_64: Process 19232 attached
[pid 19232] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19232] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19232] setpgid(0, 0)               = 0
[pid 19232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19232] write(3, "1000", 4)         = 4
[pid 19232] close(3)                    = 0
executing program
[pid 19232] write(1, "executing program\n", 18) = 18
[pid 19232] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19232] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19232] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19232] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19232] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19232] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19232] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19233]}, 88) = 19233
./strace-static-x86_64: Process 19233 attached
[pid 19233] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19233] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19232] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19233] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19233] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19232] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19232] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19233] <... futex resumed>)        = 0
[pid 19232] <... futex resumed>)        = 1
[pid 19233] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19232] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19233] <... 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 19233] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19232] <... futex resumed>)        = 0
[pid 19233] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19232] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19233] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19232] <... futex resumed>)        = 0
[pid 19233] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19232] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19233] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19233] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19232] <... futex resumed>)        = 0
[pid 19233] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19232] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19233] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19232] <... futex resumed>)        = 0
[pid 19233] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19232] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19233] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19233] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19232] <... futex resumed>)        = 0
[pid 19233] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19232] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19233] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19232] <... futex resumed>)        = 0
[pid 19233] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19232] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19233] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19233] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19232] <... futex resumed>)        = 0
[pid 19233] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19232] exit_group(0 <unfinished ...>
[pid 19233] <... futex resumed>)        = ?
[pid 19232] <... exit_group resumed>)   = ?
[pid 19233] +++ exited with 0 +++
[pid 19232] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19232, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19234 attached
, child_tidptr=0x55557c828690) = 19234
[pid 19234] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19234] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19234] setpgid(0, 0)               = 0
[pid 19234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19234] write(3, "1000", 4)         = 4
executing program
[pid 19234] close(3)                    = 0
[pid 19234] write(1, "executing program\n", 18) = 18
[pid 19234] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19234] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19234] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19234] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19234] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19234] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19234] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19235 attached
 => {parent_tid=[19235]}, 88) = 19235
[pid 19234] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19234] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19234] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19235] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19235] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19235] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19235] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19234] <... futex resumed>)        = 0
[pid 19235] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19234] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19235] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19234] <... futex resumed>)        = 0
[pid 19235] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19234] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19235] <... futex resumed>)        = 0
[pid 19234] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19235] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19234] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19235] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19234] <... futex resumed>)        = 0
[pid 19235] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19234] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19235] <... futex resumed>)        = 0
[pid 19234] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19235] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19234] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19235] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19234] <... futex resumed>)        = 0
[pid 19235] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19234] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19235] <... futex resumed>)        = 0
[pid 19234] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19235] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19234] exit_group(0 <unfinished ...>
[pid 19235] <... futex resumed>)        = ?
[pid 19234] <... exit_group resumed>)   = ?
[pid 19235] +++ exited with 0 +++
[pid 19234] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19234, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19236
./strace-static-x86_64: Process 19236 attached
[pid 19236] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19236] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19236] setpgid(0, 0)               = 0
[pid 19236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19236] write(3, "1000", 4)         = 4
[pid 19236] close(3)                    = 0
executing program
[pid 19236] write(1, "executing program\n", 18) = 18
[pid 19236] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19236] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19236] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19236] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19236] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19236] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19236] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19237]}, 88) = 19237
./strace-static-x86_64: Process 19237 attached
[pid 19236] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19236] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19236] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19237] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19237] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19237] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19237] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19236] <... futex resumed>)        = 0
[pid 19237] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19236] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19237] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19236] <... futex resumed>)        = 0
[pid 19237] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19236] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19237] <... futex resumed>)        = 0
[pid 19236] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19237] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19236] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19237] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19236] <... futex resumed>)        = 0
[pid 19237] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19236] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19237] <... futex resumed>)        = 0
[pid 19236] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19237] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19236] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19237] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19236] <... futex resumed>)        = 0
[pid 19237] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19236] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19237] <... futex resumed>)        = 0
[pid 19236] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19237] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19236] exit_group(0 <unfinished ...>
[pid 19237] <... futex resumed>)        = ?
[pid 19236] <... exit_group resumed>)   = ?
[pid 19237] +++ exited with 0 +++
[pid 19236] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19236, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19238 attached
, child_tidptr=0x55557c828690) = 19238
[pid 19238] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19238] setpgid(0, 0)               = 0
[pid 19238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19238] write(3, "1000", 4)         = 4
[pid 19238] close(3)                    = 0
[pid 19238] write(1, "executing program\n", 18executing program
) = 18
[pid 19238] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19238] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19238] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19238] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19238] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19238] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19238] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19239 attached
 => {parent_tid=[19239]}, 88) = 19239
[pid 19238] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19238] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19238] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19239] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19239] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19239] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19239] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19239] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19238] <... futex resumed>)        = 0
[pid 19238] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19239] <... futex resumed>)        = 0
[pid 19238] <... futex resumed>)        = 1
[pid 19239] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19238] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19239] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19239] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19239] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19238] <... futex resumed>)        = 0
[pid 19238] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19239] <... futex resumed>)        = 0
[pid 19238] <... futex resumed>)        = 1
[pid 19239] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19238] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19239] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19239] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19238] <... futex resumed>)        = 0
[pid 19239] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19238] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19238] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19239] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19239] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19238] <... futex resumed>)        = 0
[pid 19239] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19238] exit_group(0 <unfinished ...>
[pid 19239] <... futex resumed>)        = ?
[pid 19238] <... exit_group resumed>)   = ?
[pid 19239] +++ exited with 0 +++
[pid 19238] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19238, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19240
./strace-static-x86_64: Process 19240 attached
[pid 19240] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19240] setpgid(0, 0)               = 0
[pid 19240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19240] write(3, "1000", 4)         = 4
[pid 19240] close(3)                    = 0
executing program
[pid 19240] write(1, "executing program\n", 18) = 18
[pid 19240] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19240] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19240] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19240] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19240] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19240] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19240] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19241 attached
 => {parent_tid=[19241]}, 88) = 19241
[pid 19240] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19240] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19240] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19241] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19241] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19241] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19241] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19240] <... futex resumed>)        = 0
[pid 19241] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19240] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19241] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19240] <... futex resumed>)        = 0
[pid 19241] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19240] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19241] <... futex resumed>)        = 0
[pid 19240] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19241] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19240] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19241] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19240] <... futex resumed>)        = 0
[pid 19241] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19240] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19241] <... futex resumed>)        = 0
[pid 19240] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19241] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19240] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19241] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19240] <... futex resumed>)        = 0
[pid 19241] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19240] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19241] <... futex resumed>)        = 0
[pid 19240] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19241] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19240] exit_group(0 <unfinished ...>
[pid 19241] <... futex resumed>)        = ?
[pid 19240] <... exit_group resumed>)   = ?
[pid 19241] +++ exited with 0 +++
[pid 19240] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19240, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19242 attached
, child_tidptr=0x55557c828690) = 19242
[pid 19242] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19242] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19242] setpgid(0, 0)               = 0
[pid 19242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19242] write(3, "1000", 4)         = 4
[pid 19242] close(3executing program
)                    = 0
[pid 19242] write(1, "executing program\n", 18) = 18
[pid 19242] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19242] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19242] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19242] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19242] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19242] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19242] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19243]}, 88) = 19243
./strace-static-x86_64: Process 19243 attached
[pid 19243] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19242] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19243] <... set_robust_list resumed>) = 0
[pid 19242] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19243] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19242] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19243] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19242] <... futex resumed>)        = 0
[pid 19243] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19242] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19243] <... 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 19243] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19242] <... futex resumed>)        = 0
[pid 19243] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19242] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19243] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19242] <... futex resumed>)        = 0
[pid 19243] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19242] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19243] <... futex resumed>)        = 0
[pid 19242] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19243] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19242] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19243] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19242] <... futex resumed>)        = 0
[pid 19243] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19242] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19243] <... futex resumed>)        = 0
[pid 19242] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19243] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19242] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19243] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19242] <... futex resumed>)        = 0
[pid 19243] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19242] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19243] <... futex resumed>)        = 0
[pid 19242] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19243] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19242] exit_group(0 <unfinished ...>
[pid 19243] <... futex resumed>)        = ?
[pid 19242] <... exit_group resumed>)   = ?
[pid 19243] +++ exited with 0 +++
[pid 19242] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19242, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19244 attached
 <unfinished ...>
[pid 19244] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19244] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19244] setpgid(0, 0)               = 0
[pid 19244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19244
[pid 19244] <... openat resumed>)       = 3
[pid 19244] write(3, "1000", 4)         = 4
[pid 19244] close(3)                    = 0
[pid 19244] write(1, "executing program\n", 18executing program
) = 18
[pid 19244] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19244] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19244] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19244] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19244] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19244] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19244] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19245]}, 88) = 19245
./strace-static-x86_64: Process 19245 attached
[pid 19245] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19245] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19245] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19244] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19244] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19245] <... futex resumed>)        = 0
[pid 19244] <... futex resumed>)        = 1
[pid 19245] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19244] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19245] <... 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 19245] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19244] <... futex resumed>)        = 0
[pid 19245] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19244] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19245] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19244] <... futex resumed>)        = 0
[pid 19245] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19244] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19245] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19245] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19244] <... futex resumed>)        = 0
[pid 19245] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19244] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19245] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19244] <... futex resumed>)        = 0
[pid 19245] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19244] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19245] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19245] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19244] <... futex resumed>)        = 0
[pid 19245] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19244] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19245] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19244] <... futex resumed>)        = 0
[pid 19245] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19244] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19245] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19245] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19244] <... futex resumed>)        = 0
[pid 19245] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19244] exit_group(0 <unfinished ...>
[pid 19245] <... futex resumed>)        = ?
[pid 19244] <... exit_group resumed>)   = ?
[pid 19245] +++ exited with 0 +++
[pid 19244] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19244, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19246 attached
 <unfinished ...>
[pid 19246] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19246] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19246
[pid 19246] <... prctl resumed>)        = 0
[pid 19246] setpgid(0, 0)               = 0
[pid 19246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19246] write(3, "1000", 4)         = 4
[pid 19246] close(3)                    = 0
executing program
[pid 19246] write(1, "executing program\n", 18) = 18
[pid 19246] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19246] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19246] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19246] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19246] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19246] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19246] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19247 attached
 => {parent_tid=[19247]}, 88) = 19247
[pid 19247] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19246] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19247] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19246] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19247] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19246] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19247] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19246] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19247] <... 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 19247] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19247] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19246] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19246] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19247] <... futex resumed>)        = 0
[pid 19246] <... futex resumed>)        = 1
[pid 19247] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19246] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19247] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19247] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19246] <... futex resumed>)        = 0
[pid 19247] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19246] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19247] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19246] <... futex resumed>)        = 0
[pid 19247] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19246] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19247] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19247] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19246] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19247] <... futex resumed>)        = 0
[pid 19247] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19246] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19247] <... futex resumed>)        = 0
[pid 19246] <... futex resumed>)        = 1
[pid 19247] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19246] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19247] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19247] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19246] <... futex resumed>)        = 0
[pid 19247] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19246] exit_group(0 <unfinished ...>
[pid 19247] <... futex resumed>)        = ?
[pid 19246] <... exit_group resumed>)   = ?
[pid 19247] +++ exited with 0 +++
[pid 19246] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19246, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19248 attached
, child_tidptr=0x55557c828690) = 19248
[pid 19248] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19248] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19248] setpgid(0, 0)               = 0
[pid 19248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19248] write(3, "1000", 4)         = 4
[pid 19248] close(3executing program
)                    = 0
[pid 19248] write(1, "executing program\n", 18) = 18
[pid 19248] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19248] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19248] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19248] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19248] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19248] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19248] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19249]}, 88) = 19249
[pid 19248] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19248] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19248] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19249 attached
 <unfinished ...>
[pid 19249] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19249] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19249] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19249] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19248] <... futex resumed>)        = 0
[pid 19248] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19248] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19249] <... futex resumed>)        = 1
[pid 19249] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19249] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19248] <... futex resumed>)        = 0
[pid 19248] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19248] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19249] <... futex resumed>)        = 1
[pid 19249] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19249] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19248] <... futex resumed>)        = 0
[pid 19248] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19248] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19249] <... futex resumed>)        = 1
[pid 19249] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19249] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19248] <... futex resumed>)        = 0
[pid 19248] exit_group(0)               = ?
[pid 19249] <... futex resumed>)        = ?
[pid 19249] +++ exited with 0 +++
[pid 19248] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19248, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19250
./strace-static-x86_64: Process 19250 attached
[pid 19250] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19250] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19250] setpgid(0, 0)               = 0
[pid 19250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19250] write(3, "1000", 4)         = 4
[pid 19250] close(3)                    = 0
executing program
[pid 19250] write(1, "executing program\n", 18) = 18
[pid 19250] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19250] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19250] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19250] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19250] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19250] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19250] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19251]}, 88) = 19251
./strace-static-x86_64: Process 19251 attached
[pid 19250] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19250] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19250] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19251] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19251] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19251] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19251] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19250] <... futex resumed>)        = 0
[pid 19250] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19250] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19251] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19251] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19250] <... futex resumed>)        = 0
[pid 19250] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19250] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19251] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19251] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19250] <... futex resumed>)        = 0
[pid 19250] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19250] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19251] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19251] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19250] <... futex resumed>)        = 0
[pid 19250] exit_group(0)               = ?
[pid 19251] +++ exited with 0 +++
[pid 19250] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19250, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19252 attached
 <unfinished ...>
[pid 19252] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19252
[pid 19252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19252] setpgid(0, 0)               = 0
[pid 19252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19252] write(3, "1000", 4)         = 4
[pid 19252] close(3executing program
)                    = 0
[pid 19252] write(1, "executing program\n", 18) = 18
[pid 19252] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19252] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19252] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19252] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19252] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19252] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19252] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19253 attached
 => {parent_tid=[19253]}, 88) = 19253
[pid 19252] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19252] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19252] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19253] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19253] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19253] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19253] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19252] <... futex resumed>)        = 0
[pid 19252] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19252] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19253] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19253] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19252] <... futex resumed>)        = 0
[pid 19252] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19252] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19253] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19253] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19252] <... futex resumed>)        = 0
[pid 19252] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19252] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19253] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19253] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19252] <... futex resumed>)        = 0
[pid 19252] exit_group(0)               = ?
[pid 19253] +++ exited with 0 +++
[pid 19252] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19252, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19254
./strace-static-x86_64: Process 19254 attached
[pid 19254] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19254] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19254] setpgid(0, 0)               = 0
[pid 19254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19254] write(3, "1000", 4)         = 4
[pid 19254] close(3)                    = 0
[pid 19254] write(1, "executing program\n", 18executing program
) = 18
[pid 19254] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19254] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19254] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19254] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19254] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19254] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19254] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19255]}, 88) = 19255
[pid 19254] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19254] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19254] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19255 attached
 <unfinished ...>
[pid 19255] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19255] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19255] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19255] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19254] <... futex resumed>)        = 0
[pid 19254] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19254] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19255] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19255] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19254] <... futex resumed>)        = 0
[pid 19254] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19254] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19255] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19255] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19254] <... futex resumed>)        = 0
[pid 19255] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19254] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19255] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19254] <... futex resumed>)        = 0
[pid 19255] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19254] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19255] <... futex resumed>)        = 0
[pid 19254] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19255] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19254] exit_group(0 <unfinished ...>
[pid 19255] <... futex resumed>)        = ?
[pid 19254] <... exit_group resumed>)   = ?
[pid 19255] +++ exited with 0 +++
[pid 19254] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19254, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19256
./strace-static-x86_64: Process 19256 attached
[pid 19256] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19256] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19256] setpgid(0, 0)               = 0
[pid 19256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19256] write(3, "1000", 4)         = 4
[pid 19256] close(3)                    = 0
[pid 19256] write(1, "executing program\n", 18executing program
) = 18
[pid 19256] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19256] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19256] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19256] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19256] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19256] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19256] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19257 attached
 => {parent_tid=[19257]}, 88) = 19257
[pid 19256] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19256] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19256] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19257] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19257] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19257] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19257] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19256] <... futex resumed>)        = 0
[pid 19257] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19256] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19257] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19256] <... futex resumed>)        = 0
[pid 19257] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19256] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19257] <... futex resumed>)        = 0
[pid 19256] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19257] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19256] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19257] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19256] <... futex resumed>)        = 0
[pid 19257] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19256] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19257] <... futex resumed>)        = 0
[pid 19256] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19257] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19256] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19257] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19256] <... futex resumed>)        = 0
[pid 19257] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19256] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19257] <... futex resumed>)        = 0
[pid 19256] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19257] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19256] exit_group(0 <unfinished ...>
[pid 19257] <... futex resumed>)        = ?
[pid 19256] <... exit_group resumed>)   = ?
[pid 19257] +++ exited with 0 +++
[pid 19256] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19256, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19258 attached
 <unfinished ...>
[pid 19258] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19258] setpgid(0, 0)               = 0
[pid 19258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19258
[pid 19258] <... openat resumed>)       = 3
[pid 19258] write(3, "1000", 4)         = 4
[pid 19258] close(3)                    = 0
[pid 19258] write(1, "executing program\n", 18executing program
) = 18
[pid 19258] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19258] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19258] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19258] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19258] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19258] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19258] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19259]}, 88) = 19259
[pid 19258] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19258] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19258] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19259 attached
 <unfinished ...>
[pid 19259] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19259] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19259] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19259] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19258] <... futex resumed>)        = 0
[pid 19259] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19258] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19259] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19258] <... futex resumed>)        = 0
[pid 19259] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19258] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19259] <... futex resumed>)        = 0
[pid 19258] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19259] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19258] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19259] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19258] <... futex resumed>)        = 0
[pid 19259] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19258] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19259] <... futex resumed>)        = 0
[pid 19258] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19259] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19258] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19259] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19258] <... futex resumed>)        = 0
[pid 19259] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19258] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19259] <... futex resumed>)        = 0
[pid 19258] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19259] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19258] exit_group(0 <unfinished ...>
[pid 19259] <... futex resumed>)        = ?
[pid 19258] <... exit_group resumed>)   = ?
[pid 19259] +++ exited with 0 +++
[pid 19258] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19258, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19260 attached
, child_tidptr=0x55557c828690) = 19260
[pid 19260] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19260] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19260] setpgid(0, 0)               = 0
[pid 19260] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19260] write(3, "1000", 4)         = 4
[pid 19260] close(3)                    = 0
[pid 19260] write(1, "executing program\n", 18executing program
) = 18
[pid 19260] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19260] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19260] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19260] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19260] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19260] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19260] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19261]}, 88) = 19261
[pid 19260] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19260] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19260] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19261 attached
 <unfinished ...>
[pid 19261] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19261] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19261] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19261] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19260] <... futex resumed>)        = 0
[pid 19260] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19260] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19261] <... futex resumed>)        = 1
[pid 19261] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19261] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19260] <... futex resumed>)        = 0
[pid 19260] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19260] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19261] <... futex resumed>)        = 1
[pid 19261] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19261] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19260] <... futex resumed>)        = 0
[pid 19260] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19260] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19261] <... futex resumed>)        = 1
[pid 19261] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19261] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19260] <... futex resumed>)        = 0
[pid 19260] exit_group(0)               = ?
[pid 19261] <... futex resumed>)        = ?
[pid 19261] +++ exited with 0 +++
[pid 19260] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19260, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19262 attached
, child_tidptr=0x55557c828690) = 19262
[pid 19262] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19262] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19262] setpgid(0, 0)               = 0
[pid 19262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19262] write(3, "1000", 4)         = 4
[pid 19262] close(3executing program
)                    = 0
[pid 19262] write(1, "executing program\n", 18) = 18
[pid 19262] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19262] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19262] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19262] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19262] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19262] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19262] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19263]}, 88) = 19263
[pid 19262] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19262] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19262] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19263 attached
 <unfinished ...>
[pid 19263] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19263] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19263] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19263] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19262] <... futex resumed>)        = 0
[pid 19262] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19262] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19263] <... futex resumed>)        = 1
[pid 19263] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19263] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19262] <... futex resumed>)        = 0
[pid 19262] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19262] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19263] <... futex resumed>)        = 1
[pid 19263] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19263] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19262] <... futex resumed>)        = 0
[pid 19262] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19262] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19263] <... futex resumed>)        = 1
[pid 19263] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19263] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19262] <... futex resumed>)        = 0
[pid 19263] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19262] exit_group(0 <unfinished ...>
[pid 19263] <... futex resumed>)        = ?
[pid 19262] <... exit_group resumed>)   = ?
[pid 19263] +++ exited with 0 +++
[pid 19262] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19262, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19264
./strace-static-x86_64: Process 19264 attached
[pid 19264] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19264] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19264] setpgid(0, 0)               = 0
[pid 19264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19264] write(3, "1000", 4)         = 4
[pid 19264] close(3)                    = 0
executing program
[pid 19264] write(1, "executing program\n", 18) = 18
[pid 19264] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19264] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19264] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19264] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19264] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19264] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19264] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19265]}, 88) = 19265
[pid 19264] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19264] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19264] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19265 attached
 <unfinished ...>
[pid 19265] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19265] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19265] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19265] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19264] <... futex resumed>)        = 0
[pid 19264] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19264] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19265] <... futex resumed>)        = 1
[pid 19265] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19265] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19264] <... futex resumed>)        = 0
[pid 19264] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19264] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19265] <... futex resumed>)        = 1
[pid 19265] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19265] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19264] <... futex resumed>)        = 0
[pid 19264] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19264] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19265] <... futex resumed>)        = 1
[pid 19265] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19265] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19264] <... futex resumed>)        = 0
[pid 19264] exit_group(0)               = ?
[pid 19265] <... futex resumed>)        = ?
[pid 19265] +++ exited with 0 +++
[pid 19264] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19264, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19266
./strace-static-x86_64: Process 19266 attached
[pid 19266] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19266] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19266] setpgid(0, 0)               = 0
[pid 19266] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19266] write(3, "1000", 4)         = 4
[pid 19266] close(3)                    = 0
[pid 19266] write(1, "executing program\n", 18executing program
) = 18
[pid 19266] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19266] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19266] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19266] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19266] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19266] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19266] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19267]}, 88) = 19267
[pid 19266] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19266] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19266] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19267 attached
 <unfinished ...>
[pid 19267] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19267] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19267] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19267] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19266] <... futex resumed>)        = 0
[pid 19266] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19266] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19267] <... futex resumed>)        = 1
[pid 19267] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19267] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19266] <... futex resumed>)        = 0
[pid 19266] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19266] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19267] <... futex resumed>)        = 1
[pid 19267] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19267] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19266] <... futex resumed>)        = 0
[pid 19266] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19266] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19267] <... futex resumed>)        = 1
[pid 19267] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19267] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19266] <... futex resumed>)        = 0
[pid 19266] exit_group(0)               = ?
[pid 19267] <... futex resumed>)        = ?
[pid 19267] +++ exited with 0 +++
[pid 19266] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19266, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19268 attached
, child_tidptr=0x55557c828690) = 19268
[pid 19268] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19268] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19268] setpgid(0, 0)               = 0
[pid 19268] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19268] write(3, "1000", 4)         = 4
[pid 19268] close(3executing program
)                    = 0
[pid 19268] write(1, "executing program\n", 18) = 18
[pid 19268] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19268] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19268] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19268] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19268] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19268] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19268] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19269 attached
 => {parent_tid=[19269]}, 88) = 19269
[pid 19268] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19268] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19268] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19269] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19269] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19269] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19269] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19268] <... futex resumed>)        = 0
[pid 19268] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19268] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19269] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19269] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19268] <... futex resumed>)        = 0
[pid 19268] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19268] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19269] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19269] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19268] <... futex resumed>)        = 0
[pid 19268] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19268] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19269] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19269] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19268] <... futex resumed>)        = 0
[pid 19268] exit_group(0)               = ?
[pid 19269] +++ exited with 0 +++
[pid 19268] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19268, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19270
./strace-static-x86_64: Process 19270 attached
[pid 19270] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19270] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19270] setpgid(0, 0)               = 0
[pid 19270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19270] write(3, "1000", 4)         = 4
[pid 19270] close(3)                    = 0
[pid 19270] write(1, "executing program\n", 18executing program
) = 18
[pid 19270] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19270] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19270] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19270] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19270] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19270] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19270] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19271]}, 88) = 19271
[pid 19270] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19270] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19270] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19271 attached
 <unfinished ...>
[pid 19271] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19271] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19271] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19271] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19270] <... futex resumed>)        = 0
[pid 19270] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19270] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19271] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19271] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19271] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19270] <... futex resumed>)        = 0
[pid 19270] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19271] <... futex resumed>)        = 0
[pid 19271] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19270] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19271] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19271] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19270] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19270] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19270] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19271] <... futex resumed>)        = 0
[pid 19271] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19271] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19270] <... futex resumed>)        = 0
[pid 19270] exit_group(0)               = ?
[pid 19271] +++ exited with 0 +++
[pid 19270] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19270, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19272
./strace-static-x86_64: Process 19272 attached
[pid 19272] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19272] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19272] setpgid(0, 0)               = 0
[pid 19272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19272] write(3, "1000", 4)         = 4
[pid 19272] close(3executing program
)                    = 0
[pid 19272] write(1, "executing program\n", 18) = 18
[pid 19272] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19272] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19272] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19272] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19272] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19272] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19272] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19273]}, 88) = 19273
./strace-static-x86_64: Process 19273 attached
[pid 19272] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19272] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19272] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19273] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19273] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19273] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19273] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19272] <... futex resumed>)        = 0
[pid 19272] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19272] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19273] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19273] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19272] <... futex resumed>)        = 0
[pid 19273] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19272] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19273] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19272] <... futex resumed>)        = 0
[pid 19273] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19272] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19273] <... futex resumed>)        = 0
[pid 19272] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19273] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19272] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19273] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19272] <... futex resumed>)        = 0
[pid 19273] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19272] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19273] <... futex resumed>)        = 0
[pid 19272] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19273] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19272] exit_group(0 <unfinished ...>
[pid 19273] <... futex resumed>)        = ?
[pid 19272] <... exit_group resumed>)   = ?
[pid 19273] +++ exited with 0 +++
[pid 19272] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19272, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19274 attached
 <unfinished ...>
[pid 19274] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19274] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19274] setpgid(0, 0)               = 0
[pid 19274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19274
[pid 19274] <... openat resumed>)       = 3
[pid 19274] write(3, "1000", 4)         = 4
[pid 19274] close(3executing program
)                    = 0
[pid 19274] write(1, "executing program\n", 18) = 18
[pid 19274] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19274] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19274] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19274] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19274] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19274] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19274] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19275]}, 88) = 19275
./strace-static-x86_64: Process 19275 attached
[pid 19275] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19274] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19275] <... set_robust_list resumed>) = 0
[pid 19274] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19275] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19274] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19275] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19274] <... futex resumed>)        = 0
[pid 19275] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19274] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19275] <... 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 19275] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19274] <... futex resumed>)        = 0
[pid 19275] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19274] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19275] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19274] <... futex resumed>)        = 0
[pid 19275] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19274] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19275] <... futex resumed>)        = 0
[pid 19274] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19275] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19274] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19275] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19274] <... futex resumed>)        = 0
[pid 19275] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19274] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19275] <... futex resumed>)        = 0
[pid 19274] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19275] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19274] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19275] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19274] <... futex resumed>)        = 0
[pid 19275] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19274] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19275] <... futex resumed>)        = 0
[pid 19274] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19275] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19274] exit_group(0 <unfinished ...>
[pid 19275] <... futex resumed>)        = ?
[pid 19274] <... exit_group resumed>)   = ?
[pid 19275] +++ exited with 0 +++
[pid 19274] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19274, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19276
./strace-static-x86_64: Process 19276 attached
[pid 19276] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19276] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19276] setpgid(0, 0)               = 0
[pid 19276] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19276] write(3, "1000", 4)         = 4
[pid 19276] close(3)                    = 0
executing program
[pid 19276] write(1, "executing program\n", 18) = 18
[pid 19276] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19276] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19276] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19276] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19276] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19276] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19276] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19277]}, 88) = 19277
./strace-static-x86_64: Process 19277 attached
[pid 19277] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19277] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19277] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19276] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19276] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19277] <... futex resumed>)        = 0
[pid 19276] <... futex resumed>)        = 1
[pid 19277] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19276] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19277] <... 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 19277] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19276] <... futex resumed>)        = 0
[pid 19277] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19276] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19277] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19276] <... futex resumed>)        = 0
[pid 19277] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19276] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19277] <... futex resumed>)        = 0
[pid 19276] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19277] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19276] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19277] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19276] <... futex resumed>)        = 0
[pid 19277] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19276] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19277] <... futex resumed>)        = 0
[pid 19276] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19277] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19276] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19277] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19276] <... futex resumed>)        = 0
[pid 19277] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19276] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19277] <... futex resumed>)        = 0
[pid 19276] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19277] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19276] exit_group(0 <unfinished ...>
[pid 19277] <... futex resumed>)        = ?
[pid 19276] <... exit_group resumed>)   = ?
[pid 19277] +++ exited with 0 +++
[pid 19276] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19276, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19278 attached
 <unfinished ...>
[pid 19278] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19278] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19278] setpgid(0, 0)               = 0
[pid 19278] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19278
[pid 19278] <... openat resumed>)       = 3
[pid 19278] write(3, "1000", 4)         = 4
[pid 19278] close(3)                    = 0
[pid 19278] write(1, "executing program\n", 18executing program
) = 18
[pid 19278] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19278] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19278] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19278] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19278] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19278] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19278] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19279]}, 88) = 19279
./strace-static-x86_64: Process 19279 attached
[pid 19279] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19278] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19279] <... set_robust_list resumed>) = 0
[pid 19278] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19279] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19278] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19279] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19278] <... futex resumed>)        = 0
[pid 19279] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19278] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19279] <... 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 19279] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19278] <... futex resumed>)        = 0
[pid 19279] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19278] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19279] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19278] <... futex resumed>)        = 0
[pid 19279] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19278] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19279] <... futex resumed>)        = 0
[pid 19278] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19279] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19278] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19279] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19278] <... futex resumed>)        = 0
[pid 19279] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19278] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19279] <... futex resumed>)        = 0
[pid 19278] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19279] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19278] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19279] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19278] <... futex resumed>)        = 0
[pid 19279] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19278] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19279] <... futex resumed>)        = 0
[pid 19278] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19279] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19278] exit_group(0)               = ?
[pid 19279] <... futex resumed>)        = ?
[pid 19279] +++ exited with 0 +++
[pid 19278] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19278, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19280
./strace-static-x86_64: Process 19280 attached
[pid 19280] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19280] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19280] setpgid(0, 0)               = 0
[pid 19280] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19280] write(3, "1000", 4)         = 4
[pid 19280] close(3executing program
)                    = 0
[pid 19280] write(1, "executing program\n", 18) = 18
[pid 19280] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19280] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19280] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19280] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19280] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19280] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19280] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19281 attached
 => {parent_tid=[19281]}, 88) = 19281
[pid 19281] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19281] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19281] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19280] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19280] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19281] <... futex resumed>)        = 0
[pid 19280] <... futex resumed>)        = 1
[pid 19281] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19280] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19281] <... 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 19281] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19280] <... futex resumed>)        = 0
[pid 19281] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19280] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19281] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19280] <... futex resumed>)        = 0
[pid 19281] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19280] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19281] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19281] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19280] <... futex resumed>)        = 0
[pid 19281] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19280] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19281] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19280] <... futex resumed>)        = 0
[pid 19281] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19280] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19281] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19281] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19280] <... futex resumed>)        = 0
[pid 19281] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19280] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19281] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19280] <... futex resumed>)        = 0
[pid 19281] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19280] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19281] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19281] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19280] <... futex resumed>)        = 0
[pid 19281] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19280] exit_group(0 <unfinished ...>
[pid 19281] <... futex resumed>)        = ?
[pid 19280] <... exit_group resumed>)   = ?
[pid 19281] +++ exited with 0 +++
[pid 19280] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19280, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19282
./strace-static-x86_64: Process 19282 attached
[pid 19282] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19282] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19282] setpgid(0, 0)               = 0
[pid 19282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19282] write(3, "1000", 4)         = 4
[pid 19282] close(3)                    = 0
[pid 19282] write(1, "executing program\n", 18executing program
) = 18
[pid 19282] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19282] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19282] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19282] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19282] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19282] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19283]}, 88) = 19283
./strace-static-x86_64: Process 19283 attached
[pid 19282] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19283] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19282] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19282] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19282] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19283] <... set_robust_list resumed>) = 0
[pid 19283] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19283] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19283] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19282] <... futex resumed>)        = 0
[pid 19283] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19282] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19283] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19282] <... futex resumed>)        = 0
[pid 19283] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19282] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19283] <... futex resumed>)        = 0
[pid 19282] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19283] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19282] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19283] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19282] <... futex resumed>)        = 0
[pid 19283] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19282] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19283] <... futex resumed>)        = 0
[pid 19282] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19283] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19282] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19283] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19282] <... futex resumed>)        = 0
[pid 19283] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19282] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19283] <... futex resumed>)        = 0
[pid 19282] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19283] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19282] exit_group(0 <unfinished ...>
[pid 19283] <... futex resumed>)        = ?
[pid 19282] <... exit_group resumed>)   = ?
[pid 19283] +++ exited with 0 +++
[pid 19282] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19282, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19284
./strace-static-x86_64: Process 19284 attached
[pid 19284] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19284] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19284] setpgid(0, 0)               = 0
[pid 19284] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19284] write(3, "1000", 4)         = 4
[pid 19284] close(3)                    = 0
executing program
[pid 19284] write(1, "executing program\n", 18) = 18
[pid 19284] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19284] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19284] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19284] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19284] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19284] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19284] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19285]}, 88) = 19285
[pid 19284] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19284] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19284] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19285 attached
 <unfinished ...>
[pid 19285] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19285] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19285] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19285] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19284] <... futex resumed>)        = 0
[pid 19285] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19284] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19285] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19284] <... futex resumed>)        = 0
[pid 19285] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19284] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19285] <... futex resumed>)        = 0
[pid 19284] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19285] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19284] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19285] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19284] <... futex resumed>)        = 0
[pid 19285] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19284] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19285] <... futex resumed>)        = 0
[pid 19284] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19285] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19284] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19285] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19284] <... futex resumed>)        = 0
[pid 19285] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19284] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19285] <... futex resumed>)        = 0
[pid 19284] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19285] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19284] exit_group(0 <unfinished ...>
[pid 19285] <... futex resumed>)        = ?
[pid 19284] <... exit_group resumed>)   = ?
[pid 19285] +++ exited with 0 +++
[pid 19284] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19284, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19286 attached
 <unfinished ...>
[pid 19286] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19286
[pid 19286] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19286] setpgid(0, 0)               = 0
[pid 19286] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19286] write(3, "1000", 4)         = 4
[pid 19286] close(3executing program
)                    = 0
[pid 19286] write(1, "executing program\n", 18) = 18
[pid 19286] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19286] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19286] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19286] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19286] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19286] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19286] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19287 attached
 => {parent_tid=[19287]}, 88) = 19287
[pid 19286] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19286] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19286] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19287] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19287] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19287] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19287] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19286] <... futex resumed>)        = 0
[pid 19287] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19286] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19287] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19286] <... futex resumed>)        = 0
[pid 19287] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19286] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19287] <... futex resumed>)        = 0
[pid 19286] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19287] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19286] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19287] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19286] <... futex resumed>)        = 0
[pid 19287] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19286] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19287] <... futex resumed>)        = 0
[pid 19286] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19287] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19286] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19287] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19286] <... futex resumed>)        = 0
[pid 19287] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19286] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19287] <... futex resumed>)        = 0
[pid 19286] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19287] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19286] exit_group(0 <unfinished ...>
[pid 19287] <... futex resumed>)        = ?
[pid 19286] <... exit_group resumed>)   = ?
[pid 19287] +++ exited with 0 +++
[pid 19286] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19286, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19288
./strace-static-x86_64: Process 19288 attached
[pid 19288] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19288] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19288] setpgid(0, 0)               = 0
[pid 19288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19288] write(3, "1000", 4)         = 4
[pid 19288] close(3)                    = 0
[pid 19288] write(1, "executing program\n", 18executing program
) = 18
[pid 19288] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19288] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19288] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19288] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19288] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19288] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19288] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19289]}, 88) = 19289
./strace-static-x86_64: Process 19289 attached
[pid 19288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19288] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19288] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19289] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19289] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19289] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19288] <... futex resumed>)        = 0
[pid 19288] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19288] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19289] <... futex resumed>)        = 1
[pid 19289] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19289] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19288] <... futex resumed>)        = 0
[pid 19288] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19288] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19289] <... futex resumed>)        = 1
[pid 19289] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19289] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19288] <... futex resumed>)        = 0
[pid 19288] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19288] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19289] <... futex resumed>)        = 1
[pid 19289] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19289] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19288] <... futex resumed>)        = 0
[pid 19288] exit_group(0)               = ?
[pid 19289] <... futex resumed>)        = ?
[pid 19289] +++ exited with 0 +++
[pid 19288] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19288, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19290
./strace-static-x86_64: Process 19290 attached
[pid 19290] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19290] setpgid(0, 0)               = 0
[pid 19290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19290] write(3, "1000", 4)         = 4
[pid 19290] close(3)                    = 0
[pid 19290] write(1, "executing program\n", 18executing program
) = 18
[pid 19290] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19290] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19290] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19290] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19290] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19290] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19290] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19291]}, 88) = 19291
[pid 19290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19290] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19290] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19291 attached
 <unfinished ...>
[pid 19291] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19291] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19291] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19290] <... futex resumed>)        = 0
[pid 19291] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19290] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19290] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19291] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19291] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19290] <... futex resumed>)        = 0
[pid 19290] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19290] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19291] <... futex resumed>)        = 1
[pid 19291] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19291] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19290] <... futex resumed>)        = 0
[pid 19290] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19290] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19291] <... futex resumed>)        = 1
[pid 19291] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19291] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19290] <... futex resumed>)        = 0
[pid 19291] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19290] exit_group(0 <unfinished ...>
[pid 19291] <... futex resumed>)        = ?
[pid 19290] <... exit_group resumed>)   = ?
[pid 19291] +++ exited with 0 +++
[pid 19290] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19290, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19292
./strace-static-x86_64: Process 19292 attached
[pid 19292] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19292] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19292] setpgid(0, 0)               = 0
[pid 19292] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19292] write(3, "1000", 4)         = 4
executing program
[pid 19292] close(3)                    = 0
[pid 19292] write(1, "executing program\n", 18) = 18
[pid 19292] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19292] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19292] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19292] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19292] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19292] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19293]}, 88) = 19293
[pid 19292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19292] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19292] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19293 attached
 <unfinished ...>
[pid 19293] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19293] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19293] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19293] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19292] <... futex resumed>)        = 0
[pid 19292] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19292] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19293] <... futex resumed>)        = 1
[pid 19293] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19293] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19292] <... futex resumed>)        = 0
[pid 19292] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19292] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19293] <... futex resumed>)        = 1
[pid 19293] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19293] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19292] <... futex resumed>)        = 0
[pid 19292] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19292] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19293] <... futex resumed>)        = 1
[pid 19293] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19293] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19292] <... futex resumed>)        = 0
[pid 19292] exit_group(0)               = ?
[pid 19293] <... futex resumed>)        = ?
[pid 19293] +++ exited with 0 +++
[pid 19292] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19292, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19294
./strace-static-x86_64: Process 19294 attached
[pid 19294] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19294] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19294] setpgid(0, 0)               = 0
[pid 19294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19294] write(3, "1000", 4)         = 4
[pid 19294] close(3)                    = 0
executing program
[pid 19294] write(1, "executing program\n", 18) = 18
[pid 19294] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19294] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19294] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19294] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19294] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19294] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19294] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19295]}, 88) = 19295
./strace-static-x86_64: Process 19295 attached
[pid 19294] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19294] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19294] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19295] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19295] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19295] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19294] <... futex resumed>)        = 0
[pid 19294] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19294] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19295] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19295] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19294] <... futex resumed>)        = 0
[pid 19294] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19294] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19295] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19295] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19294] <... futex resumed>)        = 0
[pid 19294] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19294] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19295] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19295] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19294] <... futex resumed>)        = 0
[pid 19294] exit_group(0)               = ?
[pid 19295] +++ exited with 0 +++
[pid 19294] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19294, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19296
./strace-static-x86_64: Process 19296 attached
[pid 19296] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19296] setpgid(0, 0)               = 0
[pid 19296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19296] write(3, "1000", 4)         = 4
[pid 19296] close(3)                    = 0
executing program
[pid 19296] write(1, "executing program\n", 18) = 18
[pid 19296] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19296] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19296] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19296] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19296] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19296] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19296] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19297]}, 88) = 19297
[pid 19296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19296] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19296] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19297 attached
 <unfinished ...>
[pid 19297] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19297] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19297] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19297] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19296] <... futex resumed>)        = 0
[pid 19296] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19296] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19297] <... futex resumed>)        = 1
[pid 19297] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19297] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19296] <... futex resumed>)        = 0
[pid 19296] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19296] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19297] <... futex resumed>)        = 1
[pid 19297] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19297] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19296] <... futex resumed>)        = 0
[pid 19296] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19296] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19297] <... futex resumed>)        = 1
[pid 19297] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19297] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19296] <... futex resumed>)        = 0
[pid 19296] exit_group(0)               = ?
[pid 19297] <... futex resumed>)        = ?
[pid 19297] +++ exited with 0 +++
[pid 19296] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19296, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19298 attached
, child_tidptr=0x55557c828690) = 19298
[pid 19298] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19298] setpgid(0, 0)               = 0
[pid 19298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19298] write(3, "1000", 4)         = 4
[pid 19298] close(3)                    = 0
[pid 19298] write(1, "executing program\n", 18executing program
) = 18
[pid 19298] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19298] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19298] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19298] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19298] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19298] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19298] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19299 attached
 => {parent_tid=[19299]}, 88) = 19299
[pid 19298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19298] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19298] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19299] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19299] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19299] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19299] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19298] <... futex resumed>)        = 0
[pid 19298] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19298] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19299] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19299] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19298] <... futex resumed>)        = 0
[pid 19298] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19298] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19299] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19299] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19298] <... futex resumed>)        = 0
[pid 19298] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19298] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19299] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19299] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19298] <... futex resumed>)        = 0
[pid 19298] exit_group(0)               = ?
[pid 19299] +++ exited with 0 +++
[pid 19298] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19298, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19300 attached
 <unfinished ...>
[pid 19300] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19300] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19300
[pid 19300] <... prctl resumed>)        = 0
[pid 19300] setpgid(0, 0)               = 0
[pid 19300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19300] write(3, "1000", 4)         = 4
[pid 19300] close(3executing program
)                    = 0
[pid 19300] write(1, "executing program\n", 18) = 18
[pid 19300] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19300] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19300] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19300] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19300] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19300] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19300] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19301 attached
 => {parent_tid=[19301]}, 88) = 19301
[pid 19301] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19301] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19301] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19300] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19300] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19301] <... futex resumed>)        = 0
[pid 19301] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19300] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19301] <... 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 19301] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19300] <... futex resumed>)        = 0
[pid 19300] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19300] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19301] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19301] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19300] <... futex resumed>)        = 0
[pid 19300] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19300] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19301] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19301] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19300] <... futex resumed>)        = 0
[pid 19300] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19300] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19301] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19301] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19300] <... futex resumed>)        = 0
[pid 19300] exit_group(0)               = ?
[pid 19301] +++ exited with 0 +++
[pid 19300] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19300, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19302 attached
, child_tidptr=0x55557c828690) = 19302
[pid 19302] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19302] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19302] setpgid(0, 0)               = 0
[pid 19302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19302] write(3, "1000", 4)         = 4
[pid 19302] close(3)                    = 0
executing program
[pid 19302] write(1, "executing program\n", 18) = 18
[pid 19302] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19302] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19302] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19302] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19302] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19302] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19302] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19303 attached
 <unfinished ...>
[pid 19303] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19303] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19303] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19302] <... clone3 resumed> => {parent_tid=[19303]}, 88) = 19303
[pid 19302] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19302] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19303] <... futex resumed>)        = 0
[pid 19303] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19302] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19303] <... 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 19303] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19302] <... futex resumed>)        = 0
[pid 19302] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19303] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19302] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19303] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19303] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19302] <... futex resumed>)        = 0
[pid 19303] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19302] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19303] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19302] <... futex resumed>)        = 0
[pid 19303] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19302] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19303] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19303] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19302] <... futex resumed>)        = 0
[pid 19302] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19302] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19303] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19303] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19302] <... futex resumed>)        = 0
[pid 19302] exit_group(0)               = ?
[pid 19303] +++ exited with 0 +++
[pid 19302] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19302, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19304 attached
 <unfinished ...>
[pid 19304] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19304
[pid 19304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19304] setpgid(0, 0)               = 0
[pid 19304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19304] write(3, "1000", 4executing program
)         = 4
[pid 19304] close(3)                    = 0
[pid 19304] write(1, "executing program\n", 18) = 18
[pid 19304] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19304] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19304] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19304] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19304] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19304] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19304] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19305 attached
 => {parent_tid=[19305]}, 88) = 19305
[pid 19304] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19304] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19304] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19305] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19305] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19305] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19304] <... futex resumed>)        = 0
[pid 19304] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19304] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19305] <... futex resumed>)        = 1
[pid 19305] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19305] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19304] <... futex resumed>)        = 0
[pid 19304] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19304] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19305] <... futex resumed>)        = 1
[pid 19305] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19305] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19304] <... futex resumed>)        = 0
[pid 19304] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19304] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19305] <... futex resumed>)        = 1
[pid 19305] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19305] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19304] <... futex resumed>)        = 0
[pid 19304] exit_group(0)               = ?
[pid 19305] <... futex resumed>)        = ?
[pid 19305] +++ exited with 0 +++
[pid 19304] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19304, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19306
./strace-static-x86_64: Process 19306 attached
[pid 19306] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19306] setpgid(0, 0)               = 0
[pid 19306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19306] write(3, "1000", 4)         = 4
[pid 19306] close(3executing program
)                    = 0
[pid 19306] write(1, "executing program\n", 18) = 18
[pid 19306] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19306] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19306] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19306] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19306] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19306] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19306] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19307 attached
 => {parent_tid=[19307]}, 88) = 19307
[pid 19306] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19307] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19306] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19307] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19306] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19307] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19306] <... futex resumed>)        = 0
[pid 19307] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19306] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19307] <... 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 19307] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19306] <... futex resumed>)        = 0
[pid 19306] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19306] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19307] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19307] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19306] <... futex resumed>)        = 0
[pid 19306] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19306] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19307] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19307] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19306] <... futex resumed>)        = 0
[pid 19306] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19306] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19307] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19307] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19306] <... futex resumed>)        = 0
[pid 19306] exit_group(0)               = ?
[pid 19307] +++ exited with 0 +++
[pid 19306] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19306, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19308
./strace-static-x86_64: Process 19308 attached
[pid 19308] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19308] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19308] setpgid(0, 0)               = 0
[pid 19308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19308] write(3, "1000", 4)         = 4
[pid 19308] close(3executing program
)                    = 0
[pid 19308] write(1, "executing program\n", 18) = 18
[pid 19308] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19308] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19308] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19308] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19308] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19308] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19309]}, 88) = 19309
./strace-static-x86_64: Process 19309 attached
[pid 19309] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19308] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19309] <... set_robust_list resumed>) = 0
[pid 19308] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19309] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19308] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19309] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19308] <... futex resumed>)        = 0
[pid 19309] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19308] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19309] <... 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 19309] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19308] <... futex resumed>)        = 0
[pid 19309] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19308] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19309] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19308] <... futex resumed>)        = 0
[pid 19309] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19308] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19309] <... futex resumed>)        = 0
[pid 19308] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19309] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19308] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19309] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19308] <... futex resumed>)        = 0
[pid 19309] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19308] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19309] <... futex resumed>)        = 0
[pid 19308] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19309] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19308] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19308] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19309] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19309] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19308] <... futex resumed>)        = 0
[pid 19309] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19308] exit_group(0 <unfinished ...>
[pid 19309] <... futex resumed>)        = ?
[pid 19308] <... exit_group resumed>)   = ?
[pid 19309] +++ exited with 0 +++
[pid 19308] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19308, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19310 attached
 <unfinished ...>
[pid 19310] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19310
[pid 19310] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19310] setpgid(0, 0)               = 0
[pid 19310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19310] write(3, "1000", 4)         = 4
[pid 19310] close(3)                    = 0
executing program
[pid 19310] write(1, "executing program\n", 18) = 18
[pid 19310] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19310] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19310] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19310] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19310] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19310] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19311 attached
 => {parent_tid=[19311]}, 88) = 19311
[pid 19311] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19310] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19311] <... set_robust_list resumed>) = 0
[pid 19310] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19311] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19310] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19311] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19310] <... futex resumed>)        = 0
[pid 19310] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19311] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19311] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19310] <... futex resumed>)        = 0
[pid 19311] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19310] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19311] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19310] <... futex resumed>)        = 0
[pid 19311] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19310] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19311] <... futex resumed>)        = 0
[pid 19311] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19310] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19311] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19310] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19311] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19310] <... futex resumed>)        = 0
[pid 19311] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19310] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19311] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19310] <... futex resumed>)        = 0
[pid 19311] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19310] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19310] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19311] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19311] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19310] <... futex resumed>)        = 0
[pid 19311] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19310] exit_group(0 <unfinished ...>
[pid 19311] <... futex resumed>)        = ?
[pid 19310] <... exit_group resumed>)   = ?
[pid 19311] +++ exited with 0 +++
[pid 19310] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19310, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19312 attached
, child_tidptr=0x55557c828690) = 19312
[pid 19312] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19312] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19312] setpgid(0, 0)               = 0
[pid 19312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19312] write(3, "1000", 4)         = 4
[pid 19312] close(3)                    = 0
[pid 19312] write(1, "executing program\n", 18executing program
) = 18
[pid 19312] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19312] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19312] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19312] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19312] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19312] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19313 attached
 => {parent_tid=[19313]}, 88) = 19313
[pid 19312] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19313] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19312] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19312] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19312] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19313] <... set_robust_list resumed>) = 0
[pid 19313] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19313] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19313] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19312] <... futex resumed>)        = 0
[pid 19312] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19312] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19313] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19313] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19312] <... futex resumed>)        = 0
[pid 19312] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19312] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19313] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19313] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19312] <... futex resumed>)        = 0
[pid 19312] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19312] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19313] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19313] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19312] <... futex resumed>)        = 0
[pid 19312] exit_group(0)               = ?
[pid 19313] +++ exited with 0 +++
[pid 19312] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19312, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19314
./strace-static-x86_64: Process 19314 attached
[pid 19314] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19314] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19314] setpgid(0, 0)               = 0
[pid 19314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19314] write(3, "1000", 4)         = 4
[pid 19314] close(3)                    = 0
executing program
[pid 19314] write(1, "executing program\n", 18) = 18
[pid 19314] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19314] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19314] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19314] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19314] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19314] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19314] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19315 attached
 => {parent_tid=[19315]}, 88) = 19315
[pid 19314] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19314] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19314] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19315] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19315] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19315] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19315] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19314] <... futex resumed>)        = 0
[pid 19314] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19314] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19315] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19315] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19314] <... futex resumed>)        = 0
[pid 19314] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19314] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19315] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19315] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19314] <... futex resumed>)        = 0
[pid 19314] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19314] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19315] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19315] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19314] <... futex resumed>)        = 0
[pid 19314] exit_group(0)               = ?
[pid 19315] +++ exited with 0 +++
[pid 19314] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19314, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19316
./strace-static-x86_64: Process 19316 attached
[pid 19316] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19316] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19316] setpgid(0, 0)               = 0
[pid 19316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19316] write(3, "1000", 4)         = 4
[pid 19316] close(3)                    = 0
[pid 19316] write(1, "executing program\n", 18executing program
) = 18
[pid 19316] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19316] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19316] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19316] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19316] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19316] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19316] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19317 attached
 => {parent_tid=[19317]}, 88) = 19317
[pid 19316] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19317] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19316] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19316] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19316] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19317] <... set_robust_list resumed>) = 0
[pid 19317] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19317] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19317] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19316] <... futex resumed>)        = 0
[pid 19316] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19316] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19317] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19317] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19316] <... futex resumed>)        = 0
[pid 19316] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19316] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19317] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19317] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19316] <... futex resumed>)        = 0
[pid 19316] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19316] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19317] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19317] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19316] <... futex resumed>)        = 0
[pid 19316] exit_group(0)               = ?
[pid 19317] +++ exited with 0 +++
[pid 19316] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19316, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19318 attached
, child_tidptr=0x55557c828690) = 19318
[pid 19318] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19318] setpgid(0, 0)               = 0
[pid 19318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19318] write(3, "1000", 4)         = 4
[pid 19318] close(3)                    = 0
executing program
[pid 19318] write(1, "executing program\n", 18) = 18
[pid 19318] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19318] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19318] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19318] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19318] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19318] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19319 attached
 <unfinished ...>
[pid 19319] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19319] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19319] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19318] <... clone3 resumed> => {parent_tid=[19319]}, 88) = 19319
[pid 19318] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19318] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19319] <... futex resumed>)        = 0
[pid 19319] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19318] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19319] <... 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 19319] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19318] <... futex resumed>)        = 0
[pid 19318] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19319] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19318] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19319] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19318] <... futex resumed>)        = 0
[pid 19319] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19318] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19319] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19318] <... futex resumed>)        = 0
[pid 19319] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19318] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19319] <... futex resumed>)        = 0
[pid 19318] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19319] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19318] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19319] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19318] <... futex resumed>)        = 0
[pid 19319] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19318] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19319] <... futex resumed>)        = 0
[pid 19318] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19319] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19318] exit_group(0)               = ?
[pid 19319] <... futex resumed>)        = ?
[pid 19319] +++ exited with 0 +++
[pid 19318] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19318, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19320 attached
 <unfinished ...>
[pid 19320] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19320
[pid 19320] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19320] setpgid(0, 0)               = 0
[pid 19320] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19320] write(3, "1000", 4)         = 4
[pid 19320] close(3)                    = 0
[pid 19320] write(1, "executing program\n", 18executing program
) = 18
[pid 19320] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19320] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19320] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19320] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19320] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19320] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19320] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19321 attached
 => {parent_tid=[19321]}, 88) = 19321
[pid 19320] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19320] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19320] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19321] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19321] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19321] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19321] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19320] <... futex resumed>)        = 0
[pid 19321] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19320] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19321] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19320] <... futex resumed>)        = 0
[pid 19321] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19320] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19321] <... futex resumed>)        = 0
[pid 19320] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19321] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19320] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19321] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19320] <... futex resumed>)        = 0
[pid 19321] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19320] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19321] <... futex resumed>)        = 0
[pid 19320] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19321] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19320] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19321] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19320] <... futex resumed>)        = 0
[pid 19321] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19320] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19321] <... futex resumed>)        = 0
[pid 19320] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19321] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19320] exit_group(0 <unfinished ...>
[pid 19321] <... futex resumed>)        = ?
[pid 19320] <... exit_group resumed>)   = ?
[pid 19321] +++ exited with 0 +++
[pid 19320] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19320, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19322
./strace-static-x86_64: Process 19322 attached
[pid 19322] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19322] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19322] setpgid(0, 0)               = 0
[pid 19322] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19322] write(3, "1000", 4)         = 4
[pid 19322] close(3)                    = 0
[pid 19322] write(1, "executing program\n", 18executing program
) = 18
[pid 19322] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19322] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19322] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19322] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19322] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19322] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19322] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19323]}, 88) = 19323
./strace-static-x86_64: Process 19323 attached
[pid 19323] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19322] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19323] <... set_robust_list resumed>) = 0
[pid 19322] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19323] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19322] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19323] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19322] <... futex resumed>)        = 0
[pid 19323] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19322] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19323] <... 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 19323] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19322] <... futex resumed>)        = 0
[pid 19323] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19322] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19323] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19322] <... futex resumed>)        = 0
[pid 19323] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19322] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19323] <... futex resumed>)        = 0
[pid 19322] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19323] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19322] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19323] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19322] <... futex resumed>)        = 0
[pid 19323] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19322] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19323] <... futex resumed>)        = 0
[pid 19322] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19323] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19322] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19323] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19322] <... futex resumed>)        = 0
[pid 19323] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19322] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19323] <... futex resumed>)        = 0
[pid 19322] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19323] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19322] exit_group(0 <unfinished ...>
[pid 19323] <... futex resumed>)        = ?
[pid 19322] <... exit_group resumed>)   = ?
[pid 19323] +++ exited with 0 +++
[pid 19322] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19322, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19324 attached
 <unfinished ...>
[pid 19324] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19324] setpgid(0, 0)               = 0
[pid 19324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19324
[pid 19324] <... openat resumed>)       = 3
[pid 19324] write(3, "1000", 4)         = 4
[pid 19324] close(3)                    = 0
[pid 19324] write(1, "executing program\n", 18executing program
) = 18
[pid 19324] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19324] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19324] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19324] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19324] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19324] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19325]}, 88) = 19325
[pid 19324] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19324] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19324] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19325 attached
 <unfinished ...>
[pid 19325] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19325] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19325] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19325] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19324] <... futex resumed>)        = 0
[pid 19324] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19324] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19325] <... futex resumed>)        = 1
[pid 19325] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19325] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19324] <... futex resumed>)        = 0
[pid 19324] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19324] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19325] <... futex resumed>)        = 1
[pid 19325] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19325] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19324] <... futex resumed>)        = 0
[pid 19324] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19324] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19325] <... futex resumed>)        = 1
[pid 19325] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19325] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19324] <... futex resumed>)        = 0
[pid 19324] exit_group(0)               = ?
[pid 19325] <... futex resumed>)        = ?
[pid 19325] +++ exited with 0 +++
[pid 19324] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19324, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19326 attached
, child_tidptr=0x55557c828690) = 19326
[pid 19326] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19326] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19326] setpgid(0, 0)               = 0
[pid 19326] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19326] write(3, "1000", 4)         = 4
executing program
[pid 19326] close(3)                    = 0
[pid 19326] write(1, "executing program\n", 18) = 18
[pid 19326] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19326] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19326] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19326] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19326] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19326] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19326] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19327 attached
 => {parent_tid=[19327]}, 88) = 19327
[pid 19326] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19326] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19326] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19327] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19327] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19327] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19327] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19326] <... futex resumed>)        = 0
[pid 19326] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19326] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19327] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19327] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19326] <... futex resumed>)        = 0
[pid 19326] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19326] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19327] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19327] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19326] <... futex resumed>)        = 0
[pid 19326] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19326] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19327] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19327] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19326] <... futex resumed>)        = 0
[pid 19326] exit_group(0)               = ?
[pid 19327] +++ exited with 0 +++
[pid 19326] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19326, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19328
./strace-static-x86_64: Process 19328 attached
[pid 19328] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19328] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19328] setpgid(0, 0)               = 0
[pid 19328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19328] write(3, "1000", 4)         = 4
executing program
[pid 19328] close(3)                    = 0
[pid 19328] write(1, "executing program\n", 18) = 18
[pid 19328] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19328] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19328] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19328] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19328] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19328] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19328] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19329]}, 88) = 19329
[pid 19328] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19328] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19328] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19329 attached
 <unfinished ...>
[pid 19329] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19329] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19329] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19329] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19328] <... futex resumed>)        = 0
[pid 19328] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19328] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19329] <... futex resumed>)        = 1
[pid 19329] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19329] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19328] <... futex resumed>)        = 0
[pid 19328] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19328] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19329] <... futex resumed>)        = 1
[pid 19329] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19329] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19328] <... futex resumed>)        = 0
[pid 19328] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19328] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19329] <... futex resumed>)        = 1
[pid 19329] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19329] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19328] <... futex resumed>)        = 0
[pid 19328] exit_group(0)               = ?
[pid 19329] <... futex resumed>)        = ?
[pid 19329] +++ exited with 0 +++
[pid 19328] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19328, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19330 attached
, child_tidptr=0x55557c828690) = 19330
[pid 19330] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19330] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19330] setpgid(0, 0)               = 0
[pid 19330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19330] write(3, "1000", 4)         = 4
[pid 19330] close(3executing program
)                    = 0
[pid 19330] write(1, "executing program\n", 18) = 18
[pid 19330] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19330] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19330] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19330] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19330] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19330] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19330] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19331]}, 88) = 19331
[pid 19330] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19330] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19330] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19331 attached
 <unfinished ...>
[pid 19331] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19331] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19331] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19331] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19330] <... futex resumed>)        = 0
[pid 19330] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19330] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19331] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19331] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19330] <... futex resumed>)        = 0
[pid 19330] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19330] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19331] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19331] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19330] <... futex resumed>)        = 0
[pid 19330] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19330] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19331] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19331] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19330] <... futex resumed>)        = 0
[pid 19330] exit_group(0)               = ?
[pid 19331] +++ exited with 0 +++
[pid 19330] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19330, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19332 attached
 <unfinished ...>
[pid 19332] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19332
[pid 19332] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19332] setpgid(0, 0)               = 0
[pid 19332] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19332] write(3, "1000", 4)         = 4
[pid 19332] close(3executing program
)                    = 0
[pid 19332] write(1, "executing program\n", 18) = 18
[pid 19332] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19332] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19332] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19332] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19332] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19332] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19332] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19333 attached
 => {parent_tid=[19333]}, 88) = 19333
[pid 19332] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19332] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19332] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19333] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19333] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19333] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19333] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19332] <... futex resumed>)        = 0
[pid 19332] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19332] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19333] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19333] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19332] <... futex resumed>)        = 0
[pid 19332] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19332] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19333] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19333] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19332] <... futex resumed>)        = 0
[pid 19332] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19332] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19333] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19333] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19332] <... futex resumed>)        = 0
[pid 19332] exit_group(0 <unfinished ...>
[pid 19333] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19332] <... exit_group resumed>)   = ?
[pid 19333] <... futex resumed>)        = ?
[pid 19333] +++ exited with 0 +++
[pid 19332] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19332, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19334
./strace-static-x86_64: Process 19334 attached
[pid 19334] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19334] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19334] setpgid(0, 0)               = 0
[pid 19334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19334] write(3, "1000", 4)         = 4
[pid 19334] close(3)                    = 0
executing program
[pid 19334] write(1, "executing program\n", 18) = 18
[pid 19334] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19334] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19334] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19334] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19334] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19334] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19334] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19335 attached
 => {parent_tid=[19335]}, 88) = 19335
[pid 19335] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19335] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19335] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19334] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19334] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19335] <... futex resumed>)        = 0
[pid 19334] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19335] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19335] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19334] <... futex resumed>)        = 0
[pid 19334] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19334] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19335] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19335] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19334] <... futex resumed>)        = 0
[pid 19334] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19334] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19335] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19335] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19334] <... futex resumed>)        = 0
[pid 19334] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19334] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19335] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19335] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19334] <... futex resumed>)        = 0
[pid 19334] exit_group(0)               = ?
[pid 19335] +++ exited with 0 +++
[pid 19334] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19334, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19336 attached
, child_tidptr=0x55557c828690) = 19336
[pid 19336] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19336] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19336] setpgid(0, 0)               = 0
[pid 19336] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19336] write(3, "1000", 4executing program
)         = 4
[pid 19336] close(3)                    = 0
[pid 19336] write(1, "executing program\n", 18) = 18
[pid 19336] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19336] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19336] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19336] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19336] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19336] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19336] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19337 attached
 => {parent_tid=[19337]}, 88) = 19337
[pid 19336] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19336] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19336] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19337] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19337] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19337] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19337] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19336] <... futex resumed>)        = 0
[pid 19336] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19336] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19337] <... futex resumed>)        = 1
[pid 19337] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19337] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19336] <... futex resumed>)        = 0
[pid 19336] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19336] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19337] <... futex resumed>)        = 1
[pid 19337] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19337] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19336] <... futex resumed>)        = 0
[pid 19336] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19336] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19337] <... futex resumed>)        = 1
[pid 19337] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19337] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19336] <... futex resumed>)        = 0
[pid 19336] exit_group(0)               = ?
[pid 19337] <... futex resumed>)        = ?
[pid 19337] +++ exited with 0 +++
[pid 19336] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19336, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19338
./strace-static-x86_64: Process 19338 attached
[pid 19338] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19338] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19338] setpgid(0, 0)               = 0
[pid 19338] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19338] write(3, "1000", 4)         = 4
[pid 19338] close(3executing program
)                    = 0
[pid 19338] write(1, "executing program\n", 18) = 18
[pid 19338] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19338] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19338] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19338] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19338] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19338] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19338] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19339]}, 88) = 19339
./strace-static-x86_64: Process 19339 attached
[pid 19338] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19339] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19338] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19339] <... set_robust_list resumed>) = 0
[pid 19338] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19339] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19338] <... futex resumed>)        = 0
[pid 19339] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19338] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19339] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19339] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19338] <... futex resumed>)        = 0
[pid 19338] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19338] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19339] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19339] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19338] <... futex resumed>)        = 0
[pid 19338] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19338] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19339] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19339] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19338] <... futex resumed>)        = 0
[pid 19338] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19338] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19339] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19339] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19338] <... futex resumed>)        = 0
[pid 19338] exit_group(0)               = ?
[pid 19339] +++ exited with 0 +++
[pid 19338] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19338, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19340 attached
 <unfinished ...>
[pid 19340] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19340] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19340
[pid 19340] <... prctl resumed>)        = 0
[pid 19340] setpgid(0, 0)               = 0
[pid 19340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19340] write(3, "1000", 4)         = 4
[pid 19340] close(3executing program
)                    = 0
[pid 19340] write(1, "executing program\n", 18) = 18
[pid 19340] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19340] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19340] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19340] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19340] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19340] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19340] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19341]}, 88) = 19341
[pid 19340] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19340] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19340] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19341 attached
 <unfinished ...>
[pid 19341] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19341] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19341] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19341] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19340] <... futex resumed>)        = 0
[pid 19340] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19340] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19341] <... futex resumed>)        = 1
[pid 19341] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19341] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19340] <... futex resumed>)        = 0
[pid 19340] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19340] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19341] <... futex resumed>)        = 1
[pid 19341] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19341] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19340] <... futex resumed>)        = 0
[pid 19340] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19340] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19341] <... futex resumed>)        = 1
[pid 19341] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19341] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19340] <... futex resumed>)        = 0
[pid 19340] exit_group(0)               = ?
[pid 19341] <... futex resumed>)        = ?
[pid 19341] +++ exited with 0 +++
[pid 19340] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19340, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19342
./strace-static-x86_64: Process 19342 attached
[pid 19342] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19342] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19342] setpgid(0, 0)               = 0
[pid 19342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19342] write(3, "1000", 4)         = 4
[pid 19342] close(3)                    = 0
[pid 19342] write(1, "executing program\n", 18executing program
) = 18
[pid 19342] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19342] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19342] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19342] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19342] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19342] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19342] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19343]}, 88) = 19343
[pid 19342] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19342] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19342] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19343 attached
 <unfinished ...>
[pid 19343] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19343] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19343] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19343] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19342] <... futex resumed>)        = 0
[pid 19342] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19342] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19343] <... futex resumed>)        = 1
[pid 19343] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19343] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19342] <... futex resumed>)        = 0
[pid 19342] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19342] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19343] <... futex resumed>)        = 1
[pid 19343] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19343] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19342] <... futex resumed>)        = 0
[pid 19343] <... futex resumed>)        = 1
[pid 19342] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19342] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19343] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19343] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19342] <... futex resumed>)        = 0
[pid 19342] exit_group(0)               = ?
[pid 19343] <... futex resumed>)        = ?
[pid 19343] +++ exited with 0 +++
[pid 19342] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19342, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19344 attached
, child_tidptr=0x55557c828690) = 19344
[pid 19344] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19344] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19344] setpgid(0, 0)               = 0
[pid 19344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19344] write(3, "1000", 4)         = 4
[pid 19344] close(3)                    = 0
[pid 19344] write(1, "executing program\n", 18executing program
) = 18
[pid 19344] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19344] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19344] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19344] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19344] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19344] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19344] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19345]}, 88) = 19345
./strace-static-x86_64: Process 19345 attached
[pid 19344] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19344] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19344] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19345] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19345] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19345] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19345] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19344] <... futex resumed>)        = 0
[pid 19344] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19344] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19345] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19345] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19344] <... futex resumed>)        = 0
[pid 19344] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19344] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19345] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19345] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19344] <... futex resumed>)        = 0
[pid 19344] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19344] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19345] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19345] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19344] <... futex resumed>)        = 0
[pid 19344] exit_group(0)               = ?
[pid 19345] +++ exited with 0 +++
[pid 19344] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19344, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19346
./strace-static-x86_64: Process 19346 attached
[pid 19346] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19346] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19346] setpgid(0, 0)               = 0
[pid 19346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19346] write(3, "1000", 4)         = 4
[pid 19346] close(3)                    = 0
[pid 19346] write(1, "executing program\n", 18executing program
) = 18
[pid 19346] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19346] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19346] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19346] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19346] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19346] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19346] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19347 attached
 => {parent_tid=[19347]}, 88) = 19347
[pid 19346] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19346] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19346] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19347] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19347] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19347] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19347] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19346] <... futex resumed>)        = 0
[pid 19346] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19346] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19347] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19347] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19346] <... futex resumed>)        = 0
[pid 19346] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19346] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19347] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19347] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19346] <... futex resumed>)        = 0
[pid 19346] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19346] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19347] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19347] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19347] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19346] <... futex resumed>)        = 0
[pid 19346] exit_group(0)               = ?
[pid 19347] <... futex resumed>)        = ?
[pid 19347] +++ exited with 0 +++
[pid 19346] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19346, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19348 attached
 <unfinished ...>
[pid 19348] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19348] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19348] setpgid(0, 0)               = 0
[pid 19348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19348
[pid 19348] <... openat resumed>)       = 3
[pid 19348] write(3, "1000", 4)         = 4
executing program
[pid 19348] close(3)                    = 0
[pid 19348] write(1, "executing program\n", 18) = 18
[pid 19348] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19348] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19348] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19348] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19348] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19348] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19348] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19349 attached
 => {parent_tid=[19349]}, 88) = 19349
[pid 19348] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19348] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19348] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19349] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19349] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19349] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19349] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19348] <... futex resumed>)        = 0
[pid 19348] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19348] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19349] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19349] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19348] <... futex resumed>)        = 0
[pid 19349] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19348] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19348] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19349] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19349] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19348] <... futex resumed>)        = 0
[pid 19349] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19348] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19349] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19348] <... futex resumed>)        = 0
[pid 19349] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19348] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19349] <... futex resumed>)        = 0
[pid 19348] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19349] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19348] exit_group(0 <unfinished ...>
[pid 19349] <... futex resumed>)        = ?
[pid 19348] <... exit_group resumed>)   = ?
[pid 19349] +++ exited with 0 +++
[pid 19348] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19348, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19350
./strace-static-x86_64: Process 19350 attached
[pid 19350] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19350] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19350] setpgid(0, 0)               = 0
[pid 19350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19350] write(3, "1000", 4)         = 4
[pid 19350] close(3)                    = 0
[pid 19350] write(1, "executing program\n", 18executing program
) = 18
[pid 19350] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19350] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19350] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19350] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19350] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19350] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19350] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19351]}, 88) = 19351
./strace-static-x86_64: Process 19351 attached
[pid 19350] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19351] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19351] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19351] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19350] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19350] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19351] <... futex resumed>)        = 0
[pid 19350] <... futex resumed>)        = 1
[pid 19351] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19350] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19351] <... 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 19351] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19351] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19350] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19350] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19351] <... futex resumed>)        = 0
[pid 19350] <... futex resumed>)        = 1
[pid 19351] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19350] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19351] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19351] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19350] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19351] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19350] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19351] <... futex resumed>)        = 0
[pid 19350] <... futex resumed>)        = 1
[pid 19351] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19350] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19351] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19351] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19350] <... futex resumed>)        = 0
[pid 19351] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19350] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19351] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19350] <... futex resumed>)        = 0
[pid 19351] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19350] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19351] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19351] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19350] <... futex resumed>)        = 0
[pid 19351] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19350] exit_group(0 <unfinished ...>
[pid 19351] <... futex resumed>)        = ?
[pid 19350] <... exit_group resumed>)   = ?
[pid 19351] +++ exited with 0 +++
[pid 19350] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19350, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19352 attached
, child_tidptr=0x55557c828690) = 19352
[pid 19352] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19352] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19352] setpgid(0, 0)               = 0
[pid 19352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19352] write(3, "1000", 4)         = 4
[pid 19352] close(3)                    = 0
[pid 19352] write(1, "executing program\n", 18executing program
) = 18
[pid 19352] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19352] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19352] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19352] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19352] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19352] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19352] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19353 attached
 => {parent_tid=[19353]}, 88) = 19353
[pid 19353] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19352] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19353] <... set_robust_list resumed>) = 0
[pid 19352] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19353] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19352] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19353] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19352] <... futex resumed>)        = 0
[pid 19353] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19352] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19353] <... 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 19353] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19352] <... futex resumed>)        = 0
[pid 19353] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19352] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19353] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19352] <... futex resumed>)        = 0
[pid 19353] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19352] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19353] <... futex resumed>)        = 0
[pid 19352] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19353] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19352] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19353] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19352] <... futex resumed>)        = 0
[pid 19353] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19352] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19353] <... futex resumed>)        = 0
[pid 19352] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19353] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19352] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19353] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19352] <... futex resumed>)        = 0
[pid 19353] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19352] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19353] <... futex resumed>)        = 0
[pid 19352] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19353] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19352] exit_group(0 <unfinished ...>
[pid 19353] <... futex resumed>)        = ?
[pid 19352] <... exit_group resumed>)   = ?
[pid 19353] +++ exited with 0 +++
[pid 19352] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19352, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19354
./strace-static-x86_64: Process 19354 attached
[pid 19354] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19354] setpgid(0, 0)               = 0
[pid 19354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19354] write(3, "1000", 4)         = 4
[pid 19354] close(3)                    = 0
[pid 19354] write(1, "executing program\n", 18executing program
) = 18
[pid 19354] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19354] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19354] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19354] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19354] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19354] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19354] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19355]}, 88) = 19355
./strace-static-x86_64: Process 19355 attached
[pid 19355] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19354] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19355] <... set_robust_list resumed>) = 0
[pid 19354] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19355] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19354] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19355] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19354] <... futex resumed>)        = 0
[pid 19355] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19354] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19355] <... 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 19355] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19354] <... futex resumed>)        = 0
[pid 19355] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19354] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19355] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19354] <... futex resumed>)        = 0
[pid 19355] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19354] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19355] <... futex resumed>)        = 0
[pid 19354] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19355] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19354] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19355] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19354] <... futex resumed>)        = 0
[pid 19355] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19354] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19355] <... futex resumed>)        = 0
[pid 19354] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19355] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19354] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19355] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19354] <... futex resumed>)        = 0
[pid 19355] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19354] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19355] <... futex resumed>)        = 0
[pid 19354] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19355] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19354] exit_group(0 <unfinished ...>
[pid 19355] <... futex resumed>)        = ?
[pid 19354] <... exit_group resumed>)   = ?
[pid 19355] +++ exited with 0 +++
[pid 19354] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19354, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19356
./strace-static-x86_64: Process 19356 attached
[pid 19356] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19356] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19356] setpgid(0, 0)               = 0
[pid 19356] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19356] write(3, "1000", 4)         = 4
[pid 19356] close(3)                    = 0
executing program
[pid 19356] write(1, "executing program\n", 18) = 18
[pid 19356] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19356] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19356] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19356] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19356] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19356] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19356] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19357 attached
 => {parent_tid=[19357]}, 88) = 19357
[pid 19356] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19356] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19356] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19357] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19357] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19357] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19357] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19356] <... futex resumed>)        = 0
[pid 19356] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19356] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19357] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19357] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19356] <... futex resumed>)        = 0
[pid 19356] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19356] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19357] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19357] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19356] <... futex resumed>)        = 0
[pid 19356] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19356] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19357] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19357] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19356] <... futex resumed>)        = 0
[pid 19356] exit_group(0)               = ?
[pid 19357] +++ exited with 0 +++
[pid 19356] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19356, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19358
./strace-static-x86_64: Process 19358 attached
[pid 19358] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19358] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19358] setpgid(0, 0)               = 0
[pid 19358] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19358] write(3, "1000", 4)         = 4
[pid 19358] close(3)                    = 0
[pid 19358] write(1, "executing program\n", 18executing program
) = 18
[pid 19358] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19358] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19358] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19358] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19358] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19358] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19358] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19359]}, 88) = 19359
[pid 19358] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19358] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19358] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19359 attached
 <unfinished ...>
[pid 19359] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19359] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19359] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19359] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19358] <... futex resumed>)        = 0
[pid 19358] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19359] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19358] <... futex resumed>)        = 0
[pid 19359] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19358] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19359] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19358] <... futex resumed>)        = 0
[pid 19358] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19358] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19359] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19359] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19359] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19358] <... futex resumed>)        = 0
[pid 19358] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19359] <... futex resumed>)        = 0
[pid 19359] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19358] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19359] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19359] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19359] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19358] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19358] exit_group(0)               = ?
[pid 19359] <... futex resumed>)        = ?
[pid 19359] +++ exited with 0 +++
[pid 19358] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19358, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19360
./strace-static-x86_64: Process 19360 attached
[pid 19360] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19360] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19360] setpgid(0, 0)               = 0
[pid 19360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19360] write(3, "1000", 4)         = 4
[pid 19360] close(3)                    = 0
executing program
[pid 19360] write(1, "executing program\n", 18) = 18
[pid 19360] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19360] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19360] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19360] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19360] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19360] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19360] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19361 attached
 => {parent_tid=[19361]}, 88) = 19361
[pid 19361] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19360] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19361] <... set_robust_list resumed>) = 0
[pid 19360] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19360] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19360] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19361] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19361] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19361] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19360] <... futex resumed>)        = 0
[pid 19360] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19360] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19361] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19361] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19360] <... futex resumed>)        = 0
[pid 19360] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19360] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19361] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19361] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19360] <... futex resumed>)        = 0
[pid 19360] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19360] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19361] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19361] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19360] <... futex resumed>)        = 0
[pid 19360] exit_group(0)               = ?
[pid 19361] +++ exited with 0 +++
[pid 19360] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19360, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19362
./strace-static-x86_64: Process 19362 attached
[pid 19362] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19362] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19362] setpgid(0, 0)               = 0
[pid 19362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19362] write(3, "1000", 4)         = 4
[pid 19362] close(3)                    = 0
[pid 19362] write(1, "executing program\n", 18executing program
) = 18
[pid 19362] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19362] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19362] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19362] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19362] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19362] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19362] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19363]}, 88) = 19363
[pid 19362] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19362] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19362] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19363 attached
 <unfinished ...>
[pid 19363] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19363] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19363] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19363] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19362] <... futex resumed>)        = 0
[pid 19362] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19362] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19363] <... futex resumed>)        = 1
[pid 19363] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19363] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19362] <... futex resumed>)        = 0
[pid 19362] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19362] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19363] <... futex resumed>)        = 1
[pid 19363] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19363] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19362] <... futex resumed>)        = 0
[pid 19362] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19362] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19363] <... futex resumed>)        = 1
[pid 19363] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19363] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19362] <... futex resumed>)        = 0
[pid 19362] exit_group(0)               = ?
[pid 19363] <... futex resumed>)        = ?
[pid 19363] +++ exited with 0 +++
[pid 19362] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19362, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19364
./strace-static-x86_64: Process 19364 attached
[pid 19364] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19364] setpgid(0, 0)               = 0
[pid 19364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19364] write(3, "1000", 4)         = 4
[pid 19364] close(3)                    = 0
[pid 19364] write(1, "executing program\n", 18executing program
) = 18
[pid 19364] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19364] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19364] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19364] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19364] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19364] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19364] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19365 attached
 => {parent_tid=[19365]}, 88) = 19365
[pid 19364] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19364] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19364] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19365] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19365] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19365] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19365] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19364] <... futex resumed>)        = 0
[pid 19364] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19364] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19365] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19365] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19364] <... futex resumed>)        = 0
[pid 19364] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19364] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19365] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19365] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19364] <... futex resumed>)        = 0
[pid 19364] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19364] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19365] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19365] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19364] <... futex resumed>)        = 0
[pid 19364] exit_group(0)               = ?
[pid 19365] +++ exited with 0 +++
[pid 19364] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19364, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19366 attached
, child_tidptr=0x55557c828690) = 19366
[pid 19366] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19366] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19366] setpgid(0, 0)               = 0
[pid 19366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19366] write(3, "1000", 4)         = 4
[pid 19366] close(3)                    = 0
[pid 19366] write(1, "executing program\n", 18executing program
) = 18
[pid 19366] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19366] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19366] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19366] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19366] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19366] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19367]}, 88) = 19367
./strace-static-x86_64: Process 19367 attached
[pid 19367] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19367] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19367] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19366] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19367] <... futex resumed>)        = 0
[pid 19367] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19366] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19367] <... 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 19367] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19366] <... futex resumed>)        = 0
[pid 19366] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19367] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19366] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19367] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19367] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19367] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19366] <... futex resumed>)        = 0
[pid 19366] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19367] <... futex resumed>)        = 0
[pid 19367] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19366] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19367] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19366] <... futex resumed>)        = 0
[pid 19366] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19366] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19367] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19367] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19367] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19366] <... futex resumed>)        = 0
[pid 19366] exit_group(0)               = ?
[pid 19367] <... futex resumed>)        = ?
[pid 19367] +++ exited with 0 +++
[pid 19366] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19366, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19368 attached
, child_tidptr=0x55557c828690) = 19368
[pid 19368] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19368] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19368] setpgid(0, 0)               = 0
[pid 19368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19368] write(3, "1000", 4)         = 4
[pid 19368] close(3)                    = 0
[pid 19368] write(1, "executing program\n", 18executing program
) = 18
[pid 19368] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19368] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19368] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19368] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19368] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19368] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19368] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19369 attached
 => {parent_tid=[19369]}, 88) = 19369
[pid 19368] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19368] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19368] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19369] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19369] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19369] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19369] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19368] <... futex resumed>)        = 0
[pid 19368] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19368] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19369] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19369] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19368] <... futex resumed>)        = 0
[pid 19369] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19368] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19369] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19369] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19368] <... futex resumed>)        = 0
[pid 19369] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19369] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19368] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19368] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19369] <... futex resumed>)        = 0
[pid 19368] <... futex resumed>)        = 1
[pid 19368] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19369] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19369] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19368] <... futex resumed>)        = 0
[pid 19369] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19368] exit_group(0 <unfinished ...>
[pid 19369] <... futex resumed>)        = ?
[pid 19368] <... exit_group resumed>)   = ?
[pid 19369] +++ exited with 0 +++
[pid 19368] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19368, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19370
./strace-static-x86_64: Process 19370 attached
[pid 19370] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19370] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19370] setpgid(0, 0)               = 0
[pid 19370] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19370] write(3, "1000", 4)         = 4
[pid 19370] close(3executing program
)                    = 0
[pid 19370] write(1, "executing program\n", 18) = 18
[pid 19370] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19370] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19370] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19370] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19370] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19370] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19370] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19371 attached
 <unfinished ...>
[pid 19371] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19370] <... clone3 resumed> => {parent_tid=[19371]}, 88) = 19371
[pid 19371] <... set_robust_list resumed>) = 0
[pid 19370] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19371] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19370] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19371] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19370] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19371] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19370] <... futex resumed>)        = 0
[pid 19371] <... 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 19370] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19371] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19370] <... futex resumed>)        = 0
[pid 19371] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19370] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19370] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19371] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19371] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19371] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19370] <... futex resumed>)        = 0
[pid 19370] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19371] <... futex resumed>)        = 0
[pid 19370] <... futex resumed>)        = 1
[pid 19371] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19370] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19371] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19371] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19370] <... futex resumed>)        = 0
[pid 19370] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19371] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19370] <... futex resumed>)        = 0
[pid 19371] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19371] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19371] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19370] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19370] exit_group(0 <unfinished ...>
[pid 19371] <... futex resumed>)        = ?
[pid 19370] <... exit_group resumed>)   = ?
[pid 19371] +++ exited with 0 +++
[pid 19370] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19370, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19372
./strace-static-x86_64: Process 19372 attached
[pid 19372] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19372] setpgid(0, 0)               = 0
[pid 19372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19372] write(3, "1000", 4)         = 4
[pid 19372] close(3)                    = 0
[pid 19372] write(1, "executing program\n", 18executing program
) = 18
[pid 19372] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19372] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19372] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19372] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19372] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19372] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19373]}, 88) = 19373
./strace-static-x86_64: Process 19373 attached
[pid 19372] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19373] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19372] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19373] <... set_robust_list resumed>) = 0
[pid 19372] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19373] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19372] <... futex resumed>)        = 0
[pid 19373] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19372] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19373] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19373] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19372] <... futex resumed>)        = 0
[pid 19372] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19372] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19373] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19373] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19372] <... futex resumed>)        = 0
[pid 19372] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19372] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19373] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19373] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19372] <... futex resumed>)        = 0
[pid 19372] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19372] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19373] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19373] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19372] <... futex resumed>)        = 0
[pid 19372] exit_group(0)               = ?
[pid 19373] +++ exited with 0 +++
[pid 19372] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19372, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19374 attached
 <unfinished ...>
[pid 19374] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19374
[pid 19374] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19374] setpgid(0, 0)               = 0
[pid 19374] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19374] write(3, "1000", 4)         = 4
[pid 19374] close(3executing program
)                    = 0
[pid 19374] write(1, "executing program\n", 18) = 18
[pid 19374] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19374] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19374] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19374] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19374] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19374] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19374] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19375]}, 88) = 19375
[pid 19374] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19374] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19374] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19375 attached
 <unfinished ...>
[pid 19375] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19375] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19375] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19375] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19374] <... futex resumed>)        = 0
[pid 19374] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19374] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19375] <... futex resumed>)        = 1
[pid 19375] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19375] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19374] <... futex resumed>)        = 0
[pid 19374] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19374] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19375] <... futex resumed>)        = 1
[pid 19375] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19375] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19374] <... futex resumed>)        = 0
[pid 19374] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19374] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19375] <... futex resumed>)        = 1
[pid 19375] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19375] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19374] <... futex resumed>)        = 0
[pid 19375] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19374] exit_group(0)               = ?
[pid 19375] <... futex resumed>)        = ?
[pid 19375] +++ exited with 0 +++
[pid 19374] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19374, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19376 attached
, child_tidptr=0x55557c828690) = 19376
[pid 19376] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19376] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19376] setpgid(0, 0)               = 0
[pid 19376] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19376] write(3, "1000", 4)         = 4
[pid 19376] close(3)                    = 0
[pid 19376] write(1, "executing program\n", 18executing program
) = 18
[pid 19376] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19376] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19376] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19376] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19376] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19376] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19376] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19377 attached
 <unfinished ...>
[pid 19377] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19377] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19377] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19376] <... clone3 resumed> => {parent_tid=[19377]}, 88) = 19377
[pid 19376] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19376] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19376] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19377] <... futex resumed>)        = 0
[pid 19377] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19377] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19377] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19376] <... futex resumed>)        = 0
[pid 19376] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19376] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19377] <... futex resumed>)        = 0
[pid 19377] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19377] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19376] <... futex resumed>)        = 0
[pid 19376] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19376] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19377] <... futex resumed>)        = 1
[pid 19377] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19377] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19376] <... futex resumed>)        = 0
[pid 19376] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19376] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19377] <... futex resumed>)        = 1
[pid 19377] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19377] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19376] <... futex resumed>)        = 0
[pid 19376] exit_group(0)               = ?
[pid 19377] <... futex resumed>)        = ?
[pid 19377] +++ exited with 0 +++
[pid 19376] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19376, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19378 attached
 <unfinished ...>
[pid 19378] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19378] setpgid(0, 0)               = 0
[pid 19378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19378
[pid 19378] <... openat resumed>)       = 3
[pid 19378] write(3, "1000", 4)         = 4
executing program
[pid 19378] close(3)                    = 0
[pid 19378] write(1, "executing program\n", 18) = 18
[pid 19378] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19378] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19378] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19378] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19378] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19378] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19379]}, 88) = 19379
[pid 19378] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19378] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19378] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19379 attached
 <unfinished ...>
[pid 19379] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19379] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19379] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19379] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19378] <... futex resumed>)        = 0
[pid 19378] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19378] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19379] <... futex resumed>)        = 1
[pid 19379] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19379] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19378] <... futex resumed>)        = 0
[pid 19378] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19378] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19379] <... futex resumed>)        = 1
[pid 19379] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19379] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19378] <... futex resumed>)        = 0
[pid 19378] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19378] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19379] <... futex resumed>)        = 1
[pid 19379] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19379] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19378] <... futex resumed>)        = 0
[pid 19378] exit_group(0)               = ?
[pid 19379] <... futex resumed>)        = ?
[pid 19379] +++ exited with 0 +++
[pid 19378] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19378, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19380
./strace-static-x86_64: Process 19380 attached
[pid 19380] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19380] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19380] setpgid(0, 0)               = 0
[pid 19380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19380] write(3, "1000", 4)         = 4
[pid 19380] close(3)                    = 0
[pid 19380] write(1, "executing program\n", 18executing program
) = 18
[pid 19380] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19380] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19380] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19380] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19380] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19380] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19380] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19381 attached
 => {parent_tid=[19381]}, 88) = 19381
[pid 19380] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19380] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19380] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19381] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19381] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19381] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19381] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19381] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19380] <... futex resumed>)        = 0
[pid 19380] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19380] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19381] <... futex resumed>)        = 0
[pid 19381] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19381] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19380] <... futex resumed>)        = 0
[pid 19380] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19381] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19380] <... futex resumed>)        = 0
[pid 19380] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19381] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19381] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19381] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19380] <... futex resumed>)        = 0
[pid 19380] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19380] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19381] <... futex resumed>)        = 0
[pid 19381] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19381] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19381] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19380] <... futex resumed>)        = 0
[pid 19380] exit_group(0)               = ?
[pid 19381] <... futex resumed>)        = ?
[pid 19381] +++ exited with 0 +++
[pid 19380] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19380, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19382 attached
, child_tidptr=0x55557c828690) = 19382
[pid 19382] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19382] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19382] setpgid(0, 0)               = 0
[pid 19382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19382] write(3, "1000", 4)         = 4
[pid 19382] close(3executing program
)                    = 0
[pid 19382] write(1, "executing program\n", 18) = 18
[pid 19382] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19382] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19382] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19382] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19382] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19382] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19382] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19383 attached
 => {parent_tid=[19383]}, 88) = 19383
[pid 19382] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19382] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19382] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19383] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19383] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19383] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19383] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19382] <... futex resumed>)        = 0
[pid 19382] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19382] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19383] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19383] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19382] <... futex resumed>)        = 0
[pid 19382] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19382] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19383] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19383] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19382] <... futex resumed>)        = 0
[pid 19382] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19382] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19383] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19383] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19382] <... futex resumed>)        = 0
[pid 19382] exit_group(0)               = ?
[pid 19383] +++ exited with 0 +++
[pid 19382] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19382, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19384
./strace-static-x86_64: Process 19384 attached
[pid 19384] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19384] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19384] setpgid(0, 0)               = 0
[pid 19384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19384] write(3, "1000", 4)         = 4
[pid 19384] close(3)                    = 0
executing program
[pid 19384] write(1, "executing program\n", 18) = 18
[pid 19384] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19384] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19384] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19384] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19384] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19384] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19384] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19385 attached
 => {parent_tid=[19385]}, 88) = 19385
[pid 19384] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19384] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19384] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19385] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19385] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19385] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19385] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19384] <... futex resumed>)        = 0
[pid 19385] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19384] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19385] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19384] <... futex resumed>)        = 0
[pid 19385] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19384] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19385] <... futex resumed>)        = 0
[pid 19384] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19385] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19384] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19385] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19384] <... futex resumed>)        = 0
[pid 19385] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19384] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19385] <... futex resumed>)        = 0
[pid 19384] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19385] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19384] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19384] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19385] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19385] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19384] <... futex resumed>)        = 0
[pid 19385] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19384] exit_group(0 <unfinished ...>
[pid 19385] <... futex resumed>)        = ?
[pid 19384] <... exit_group resumed>)   = ?
[pid 19385] +++ exited with 0 +++
[pid 19384] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19384, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19386 attached
, child_tidptr=0x55557c828690) = 19386
[pid 19386] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19386] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19386] setpgid(0, 0)               = 0
[pid 19386] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19386] write(3, "1000", 4)         = 4
[pid 19386] close(3)                    = 0
executing program
[pid 19386] write(1, "executing program\n", 18) = 18
[pid 19386] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19386] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19386] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19386] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19386] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19386] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19386] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19387]}, 88) = 19387
./strace-static-x86_64: Process 19387 attached
[pid 19386] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19387] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19386] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19387] <... set_robust_list resumed>) = 0
[pid 19386] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19387] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19386] <... futex resumed>)        = 0
[pid 19387] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19386] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19387] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19387] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19386] <... futex resumed>)        = 0
[pid 19387] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19386] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19387] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19386] <... futex resumed>)        = 0
[pid 19387] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19386] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19387] <... futex resumed>)        = 0
[pid 19386] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19387] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19386] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19387] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19386] <... futex resumed>)        = 0
[pid 19387] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19386] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19387] <... futex resumed>)        = 0
[pid 19386] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19387] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19386] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19386] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19387] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19387] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19386] <... futex resumed>)        = 0
[pid 19387] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19386] exit_group(0)               = ?
[pid 19387] <... futex resumed>)        = ?
[pid 19387] +++ exited with 0 +++
[pid 19386] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19386, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19388
./strace-static-x86_64: Process 19388 attached
[pid 19388] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19388] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19388] setpgid(0, 0)               = 0
[pid 19388] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19388] write(3, "1000", 4)         = 4
[pid 19388] close(3)                    = 0
[pid 19388] write(1, "executing program\n", 18executing program
) = 18
[pid 19388] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19388] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19388] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19388] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19388] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19388] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19388] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19389 attached
 => {parent_tid=[19389]}, 88) = 19389
[pid 19388] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19388] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19388] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19389] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19389] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19389] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19389] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19388] <... futex resumed>)        = 0
[pid 19388] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19388] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19389] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19389] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19388] <... futex resumed>)        = 0
[pid 19388] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19388] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19389] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19389] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19388] <... futex resumed>)        = 0
[pid 19388] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19388] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19389] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19389] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19388] <... futex resumed>)        = 0
[pid 19388] exit_group(0)               = ?
[pid 19389] +++ exited with 0 +++
[pid 19388] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19388, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19390 attached
, child_tidptr=0x55557c828690) = 19390
[pid 19390] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19390] setpgid(0, 0)               = 0
[pid 19390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19390] write(3, "1000", 4)         = 4
[pid 19390] close(3)                    = 0
[pid 19390] write(1, "executing program\n", 18executing program
) = 18
[pid 19390] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19390] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19390] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19390] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19390] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19390] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19391]}, 88) = 19391
[pid 19390] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19390] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19390] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19391 attached
 <unfinished ...>
[pid 19391] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19391] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19391] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19391] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19390] <... futex resumed>)        = 0
[pid 19390] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19390] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19391] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19391] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19390] <... futex resumed>)        = 0
[pid 19390] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19390] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19391] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19391] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19390] <... futex resumed>)        = 0
[pid 19390] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19390] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19391] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19391] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19390] <... futex resumed>)        = 0
[pid 19390] exit_group(0)               = ?
[pid 19391] +++ exited with 0 +++
[pid 19390] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19390, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19392
./strace-static-x86_64: Process 19392 attached
[pid 19392] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19392] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19392] setpgid(0, 0)               = 0
[pid 19392] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19392] write(3, "1000", 4)         = 4
[pid 19392] close(3)                    = 0
[pid 19392] write(1, "executing program\n", 18executing program
) = 18
[pid 19392] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19392] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19392] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19392] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19392] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19392] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19392] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19393 attached
 => {parent_tid=[19393]}, 88) = 19393
[pid 19393] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19392] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19393] <... set_robust_list resumed>) = 0
[pid 19392] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19393] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19392] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19393] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19392] <... futex resumed>)        = 0
[pid 19393] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19392] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19393] <... 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 19393] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19392] <... futex resumed>)        = 0
[pid 19392] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19392] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19393] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19393] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19392] <... futex resumed>)        = 0
[pid 19392] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19392] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19393] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19393] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19392] <... futex resumed>)        = 0
[pid 19392] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19392] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19393] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19393] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19392] <... futex resumed>)        = 0
[pid 19392] exit_group(0)               = ?
[pid 19393] +++ exited with 0 +++
[pid 19392] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19392, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19394
./strace-static-x86_64: Process 19394 attached
[pid 19394] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19394] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19394] setpgid(0, 0)               = 0
[pid 19394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19394] write(3, "1000", 4)         = 4
[pid 19394] close(3)                    = 0
executing program
[pid 19394] write(1, "executing program\n", 18) = 18
[pid 19394] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19394] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19394] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19394] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19394] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19394] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19394] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19395]}, 88) = 19395
./strace-static-x86_64: Process 19395 attached
[pid 19394] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19394] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19394] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19395] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19395] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19395] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19395] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19394] <... futex resumed>)        = 0
[pid 19394] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19395] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19394] <... futex resumed>)        = 0
[pid 19395] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19394] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19395] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19394] <... futex resumed>)        = 0
[pid 19395] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19394] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19395] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19394] <... futex resumed>)        = 0
[pid 19395] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19394] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19395] <... futex resumed>)        = 0
[pid 19394] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19395] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19394] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19395] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19394] <... futex resumed>)        = 0
[pid 19395] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19394] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19395] <... futex resumed>)        = 0
[pid 19394] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19395] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19394] exit_group(0 <unfinished ...>
[pid 19395] <... futex resumed>)        = ?
[pid 19394] <... exit_group resumed>)   = ?
[pid 19395] +++ exited with 0 +++
[pid 19394] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19394, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19396
./strace-static-x86_64: Process 19396 attached
[pid 19396] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19396] setpgid(0, 0)               = 0
[pid 19396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19396] write(3, "1000", 4)         = 4
[pid 19396] close(3)                    = 0
executing program
[pid 19396] write(1, "executing program\n", 18) = 18
[pid 19396] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19396] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19396] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19396] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19396] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19396] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19397 attached
 => {parent_tid=[19397]}, 88) = 19397
[pid 19397] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19396] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19397] <... set_robust_list resumed>) = 0
[pid 19396] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19397] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19396] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19397] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19396] <... futex resumed>)        = 0
[pid 19397] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19396] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19397] <... 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 19397] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19396] <... futex resumed>)        = 0
[pid 19397] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19396] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19397] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19396] <... futex resumed>)        = 0
[pid 19397] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19396] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19397] <... futex resumed>)        = 0
[pid 19396] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19397] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19396] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19397] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19396] <... futex resumed>)        = 0
[pid 19397] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19396] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19397] <... futex resumed>)        = 0
[pid 19396] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19397] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19396] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19397] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19396] <... futex resumed>)        = 0
[pid 19397] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19396] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19397] <... futex resumed>)        = 0
[pid 19396] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19397] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19396] exit_group(0 <unfinished ...>
[pid 19397] <... futex resumed>)        = ?
[pid 19396] <... exit_group resumed>)   = ?
[pid 19397] +++ exited with 0 +++
[pid 19396] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19396, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19398
./strace-static-x86_64: Process 19398 attached
[pid 19398] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19398] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19398] setpgid(0, 0)               = 0
[pid 19398] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19398] write(3, "1000", 4)         = 4
[pid 19398] close(3executing program
)                    = 0
[pid 19398] write(1, "executing program\n", 18) = 18
[pid 19398] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19398] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19398] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19398] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19398] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19398] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19398] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19399 attached
 => {parent_tid=[19399]}, 88) = 19399
[pid 19398] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19398] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19398] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19399] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19399] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19399] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19399] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19398] <... futex resumed>)        = 0
[pid 19399] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19398] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19399] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19398] <... futex resumed>)        = 0
[pid 19399] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19398] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19399] <... futex resumed>)        = 0
[pid 19398] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19399] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19398] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19399] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19398] <... futex resumed>)        = 0
[pid 19399] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19398] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19399] <... futex resumed>)        = 0
[pid 19398] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19399] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19398] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19399] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19398] <... futex resumed>)        = 0
[pid 19399] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19398] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19399] <... futex resumed>)        = 0
[pid 19398] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19399] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19398] exit_group(0 <unfinished ...>
[pid 19399] <... futex resumed>)        = ?
[pid 19398] <... exit_group resumed>)   = ?
[pid 19399] +++ exited with 0 +++
[pid 19398] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19398, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19400 attached
, child_tidptr=0x55557c828690) = 19400
[pid 19400] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19400] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19400] setpgid(0, 0)               = 0
[pid 19400] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19400] write(3, "1000", 4)         = 4
[pid 19400] close(3)                    = 0
executing program
[pid 19400] write(1, "executing program\n", 18) = 18
[pid 19400] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19400] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19400] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19400] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19400] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19400] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19400] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19401 attached
 => {parent_tid=[19401]}, 88) = 19401
[pid 19400] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19401] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19400] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19400] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19400] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19401] <... set_robust_list resumed>) = 0
[pid 19401] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19401] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19401] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19401] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19400] <... futex resumed>)        = 0
[pid 19400] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19401] <... futex resumed>)        = 0
[pid 19400] <... futex resumed>)        = 1
[pid 19401] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19400] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19401] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19401] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19400] <... futex resumed>)        = 0
[pid 19401] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19400] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19401] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19400] <... futex resumed>)        = 0
[pid 19401] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19400] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19401] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19401] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19400] <... futex resumed>)        = 0
[pid 19401] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19400] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19401] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19400] <... futex resumed>)        = 0
[pid 19401] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19400] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19401] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19401] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19400] <... futex resumed>)        = 0
[pid 19401] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19400] exit_group(0 <unfinished ...>
[pid 19401] <... futex resumed>)        = ?
[pid 19400] <... exit_group resumed>)   = ?
[pid 19401] +++ exited with 0 +++
[pid 19400] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19400, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19402 attached
 <unfinished ...>
[pid 19402] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19402] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19402
[pid 19402] <... prctl resumed>)        = 0
[pid 19402] setpgid(0, 0)               = 0
[pid 19402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19402] write(3, "1000", 4)         = 4
[pid 19402] close(3)                    = 0
executing program
[pid 19402] write(1, "executing program\n", 18) = 18
[pid 19402] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19402] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19402] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19402] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19402] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19402] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19403 attached
 => {parent_tid=[19403]}, 88) = 19403
[pid 19403] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19402] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19403] <... set_robust_list resumed>) = 0
[pid 19402] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19403] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19402] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19403] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19402] <... futex resumed>)        = 0
[pid 19403] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19402] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19403] <... 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 19403] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19402] <... futex resumed>)        = 0
[pid 19403] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19402] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19403] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19402] <... futex resumed>)        = 0
[pid 19403] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19402] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19403] <... futex resumed>)        = 0
[pid 19402] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19403] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19402] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19403] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19402] <... futex resumed>)        = 0
[pid 19403] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19402] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19403] <... futex resumed>)        = 0
[pid 19402] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19403] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19402] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19403] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19402] <... futex resumed>)        = 0
[pid 19403] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19402] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19403] <... futex resumed>)        = 0
[pid 19402] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19403] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19402] exit_group(0 <unfinished ...>
[pid 19403] <... futex resumed>)        = ?
[pid 19402] <... exit_group resumed>)   = ?
[pid 19403] +++ exited with 0 +++
[pid 19402] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19402, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19404
./strace-static-x86_64: Process 19404 attached
[pid 19404] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19404] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19404] setpgid(0, 0)               = 0
[pid 19404] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19404] write(3, "1000", 4)         = 4
[pid 19404] close(3)                    = 0
[pid 19404] write(1, "executing program\n", 18executing program
) = 18
[pid 19404] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19404] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19404] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19404] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19404] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19404] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19404] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19405 attached
 => {parent_tid=[19405]}, 88) = 19405
[pid 19404] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19404] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19404] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19405] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19405] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19405] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19405] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19404] <... futex resumed>)        = 0
[pid 19405] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19404] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19405] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19404] <... futex resumed>)        = 0
[pid 19405] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19404] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19405] <... futex resumed>)        = 0
[pid 19404] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19405] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19404] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19405] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19404] <... futex resumed>)        = 0
[pid 19405] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19404] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19405] <... futex resumed>)        = 0
[pid 19404] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19405] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19404] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19405] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19404] <... futex resumed>)        = 0
[pid 19405] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19404] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19405] <... futex resumed>)        = 0
[pid 19404] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19405] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19404] exit_group(0 <unfinished ...>
[pid 19405] <... futex resumed>)        = ?
[pid 19404] <... exit_group resumed>)   = ?
[pid 19405] +++ exited with 0 +++
[pid 19404] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19404, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19406 attached
, child_tidptr=0x55557c828690) = 19406
[pid 19406] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19406] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19406] setpgid(0, 0)               = 0
[pid 19406] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19406] write(3, "1000", 4)         = 4
[pid 19406] close(3)                    = 0
[pid 19406] write(1, "executing program\n", 18executing program
) = 18
[pid 19406] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19406] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19406] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19406] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19406] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19406] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19406] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19407]}, 88) = 19407
./strace-static-x86_64: Process 19407 attached
[pid 19406] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19406] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19406] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19407] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19407] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19407] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19407] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19406] <... futex resumed>)        = 0
[pid 19407] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19406] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19407] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19406] <... futex resumed>)        = 0
[pid 19407] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19406] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19407] <... futex resumed>)        = 0
[pid 19406] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19407] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19406] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19407] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19406] <... futex resumed>)        = 0
[pid 19407] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19406] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19407] <... futex resumed>)        = 0
[pid 19406] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19407] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19406] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19407] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19406] <... futex resumed>)        = 0
[pid 19407] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19406] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19407] <... futex resumed>)        = 0
[pid 19406] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19407] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19406] exit_group(0 <unfinished ...>
[pid 19407] <... futex resumed>)        = ?
[pid 19406] <... exit_group resumed>)   = ?
[pid 19407] +++ exited with 0 +++
[pid 19406] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19406, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19408
./strace-static-x86_64: Process 19408 attached
[pid 19408] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19408] setpgid(0, 0)               = 0
[pid 19408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19408] write(3, "1000", 4)         = 4
[pid 19408] close(3)                    = 0
executing program
[pid 19408] write(1, "executing program\n", 18) = 18
[pid 19408] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19408] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19408] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19408] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19408] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19408] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19409]}, 88) = 19409
[pid 19408] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19408] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19408] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19409 attached
 <unfinished ...>
[pid 19409] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19409] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19409] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19409] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19408] <... futex resumed>)        = 0
[pid 19408] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19408] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19409] <... futex resumed>)        = 1
[pid 19409] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19409] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19408] <... futex resumed>)        = 0
[pid 19408] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19408] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19409] <... futex resumed>)        = 1
[pid 19409] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19409] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19408] <... futex resumed>)        = 0
[pid 19408] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19408] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19409] <... futex resumed>)        = 1
[pid 19409] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19409] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19408] <... futex resumed>)        = 0
[pid 19408] exit_group(0)               = ?
[pid 19409] <... futex resumed>)        = ?
[pid 19409] +++ exited with 0 +++
[pid 19408] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19408, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19410
./strace-static-x86_64: Process 19410 attached
[pid 19410] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19410] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19410] setpgid(0, 0)               = 0
[pid 19410] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19410] write(3, "1000", 4)         = 4
[pid 19410] close(3)                    = 0
executing program
[pid 19410] write(1, "executing program\n", 18) = 18
[pid 19410] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19410] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19410] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19410] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19410] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19410] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19410] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19411 attached
 => {parent_tid=[19411]}, 88) = 19411
[pid 19410] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19410] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19410] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19411] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19411] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19411] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19411] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19410] <... futex resumed>)        = 0
[pid 19410] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19410] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19411] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19411] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19410] <... futex resumed>)        = 0
[pid 19410] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19410] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19411] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19411] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19410] <... futex resumed>)        = 0
[pid 19410] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19410] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19411] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19411] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19410] <... futex resumed>)        = 0
[pid 19410] exit_group(0)               = ?
[pid 19411] +++ exited with 0 +++
[pid 19410] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19410, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19412
./strace-static-x86_64: Process 19412 attached
[pid 19412] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19412] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19412] setpgid(0, 0)               = 0
[pid 19412] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19412] write(3, "1000", 4)         = 4
[pid 19412] close(3)                    = 0
[pid 19412] write(1, "executing program\n", 18executing program
) = 18
[pid 19412] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19412] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19412] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19412] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19412] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19412] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19412] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19413]}, 88) = 19413
./strace-static-x86_64: Process 19413 attached
[pid 19412] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19413] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19412] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19412] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19412] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19413] <... set_robust_list resumed>) = 0
[pid 19413] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19413] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19413] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19412] <... futex resumed>)        = 0
[pid 19412] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19412] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19413] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19413] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19412] <... futex resumed>)        = 0
[pid 19412] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19412] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19413] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19413] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19412] <... futex resumed>)        = 0
[pid 19412] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19412] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19413] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19413] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19412] <... futex resumed>)        = 0
[pid 19412] exit_group(0)               = ?
[pid 19413] +++ exited with 0 +++
[pid 19412] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19412, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19414
./strace-static-x86_64: Process 19414 attached
[pid 19414] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19414] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19414] setpgid(0, 0)               = 0
[pid 19414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19414] write(3, "1000", 4)         = 4
executing program
[pid 19414] close(3)                    = 0
[pid 19414] write(1, "executing program\n", 18) = 18
[pid 19414] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19414] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19414] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19414] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19414] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19414] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19414] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19415 attached
 => {parent_tid=[19415]}, 88) = 19415
[pid 19414] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19414] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19414] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19415] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19415] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19415] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19415] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19414] <... futex resumed>)        = 0
[pid 19414] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19414] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19415] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19415] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19414] <... futex resumed>)        = 0
[pid 19414] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19414] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19415] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19415] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19414] <... futex resumed>)        = 0
[pid 19414] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19414] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19415] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19415] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19414] <... futex resumed>)        = 0
[pid 19414] exit_group(0)               = ?
[pid 19415] +++ exited with 0 +++
[pid 19414] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19414, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19416
./strace-static-x86_64: Process 19416 attached
[pid 19416] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19416] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19416] setpgid(0, 0)               = 0
[pid 19416] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19416] write(3, "1000", 4executing program
)         = 4
[pid 19416] close(3)                    = 0
[pid 19416] write(1, "executing program\n", 18) = 18
[pid 19416] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19416] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19416] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19416] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19416] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19416] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19416] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19417]}, 88) = 19417
./strace-static-x86_64: Process 19417 attached
[pid 19417] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19417] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19417] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19416] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19416] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19417] <... futex resumed>)        = 0
[pid 19417] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19416] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19417] <... 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 19417] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19416] <... futex resumed>)        = 0
[pid 19416] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19416] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19417] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19417] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19416] <... futex resumed>)        = 0
[pid 19416] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19416] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19417] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19417] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19416] <... futex resumed>)        = 0
[pid 19416] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19416] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19417] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19417] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19416] <... futex resumed>)        = 0
[pid 19416] exit_group(0)               = ?
[pid 19417] +++ exited with 0 +++
[pid 19416] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19416, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19418 attached
 <unfinished ...>
[pid 19418] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19418
[pid 19418] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19418] setpgid(0, 0)               = 0
[pid 19418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19418] write(3, "1000", 4)         = 4
[pid 19418] close(3)                    = 0
executing program
[pid 19418] write(1, "executing program\n", 18) = 18
[pid 19418] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19418] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19418] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19418] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19418] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19418] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19418] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19419 attached
 => {parent_tid=[19419]}, 88) = 19419
[pid 19419] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19418] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19419] <... set_robust_list resumed>) = 0
[pid 19418] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19419] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19418] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19419] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19418] <... futex resumed>)        = 0
[pid 19419] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19418] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19419] <... 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 19419] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19418] <... futex resumed>)        = 0
[pid 19418] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19418] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19419] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19419] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19418] <... futex resumed>)        = 0
[pid 19418] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19418] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19419] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19419] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19418] <... futex resumed>)        = 0
[pid 19418] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19418] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19419] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19419] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19418] <... futex resumed>)        = 0
[pid 19418] exit_group(0 <unfinished ...>
[pid 19419] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19418] <... exit_group resumed>)   = ?
[pid 19419] <... futex resumed>)        = ?
[pid 19419] +++ exited with 0 +++
[pid 19418] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19418, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19420
./strace-static-x86_64: Process 19420 attached
[pid 19420] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19420] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19420] setpgid(0, 0)               = 0
[pid 19420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19420] write(3, "1000", 4)         = 4
[pid 19420] close(3)                    = 0
executing program
[pid 19420] write(1, "executing program\n", 18) = 18
[pid 19420] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19420] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19420] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19420] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19420] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19420] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19420] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19421]}, 88) = 19421
[pid 19420] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19420] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19420] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19421 attached
 <unfinished ...>
[pid 19421] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19421] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19421] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19421] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19420] <... futex resumed>)        = 0
[pid 19420] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19420] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19421] <... futex resumed>)        = 1
[pid 19421] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19421] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19420] <... futex resumed>)        = 0
[pid 19420] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19420] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19421] <... futex resumed>)        = 1
[pid 19421] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19421] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19420] <... futex resumed>)        = 0
[pid 19420] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19420] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19421] <... futex resumed>)        = 1
[pid 19421] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19421] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19420] <... futex resumed>)        = 0
[pid 19420] exit_group(0)               = ?
[pid 19421] <... futex resumed>)        = ?
[pid 19421] +++ exited with 0 +++
[pid 19420] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19420, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19422
./strace-static-x86_64: Process 19422 attached
[pid 19422] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19422] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19422] setpgid(0, 0)               = 0
[pid 19422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19422] write(3, "1000", 4)         = 4
[pid 19422] close(3executing program
)                    = 0
[pid 19422] write(1, "executing program\n", 18) = 18
[pid 19422] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19422] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19422] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19422] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19422] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19422] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19422] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19423]}, 88) = 19423
[pid 19422] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19422] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19422] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19423 attached
 <unfinished ...>
[pid 19423] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19423] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19423] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19423] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19422] <... futex resumed>)        = 0
[pid 19422] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19422] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19423] <... futex resumed>)        = 1
[pid 19423] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19423] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19422] <... futex resumed>)        = 0
[pid 19422] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19422] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19423] <... futex resumed>)        = 1
[pid 19423] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19423] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19422] <... futex resumed>)        = 0
[pid 19422] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19422] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19423] <... futex resumed>)        = 1
[pid 19423] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19423] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19422] <... futex resumed>)        = 0
[pid 19422] exit_group(0)               = ?
[pid 19423] <... futex resumed>)        = ?
[pid 19423] +++ exited with 0 +++
[pid 19422] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19422, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19424 attached
, child_tidptr=0x55557c828690) = 19424
[pid 19424] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19424] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19424] setpgid(0, 0)               = 0
[pid 19424] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19424] write(3, "1000", 4)         = 4
[pid 19424] close(3executing program
)                    = 0
[pid 19424] write(1, "executing program\n", 18) = 18
[pid 19424] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19424] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19424] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19424] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19424] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19424] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19424] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19425]}, 88) = 19425
[pid 19424] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19424] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19424] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19425 attached
 <unfinished ...>
[pid 19425] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19425] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19425] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19425] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19424] <... futex resumed>)        = 0
[pid 19425] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19424] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19425] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19424] <... futex resumed>)        = 0
[pid 19424] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19425] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19425] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19424] <... futex resumed>)        = 0
[pid 19424] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19424] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19425] <... futex resumed>)        = 1
[pid 19425] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19425] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19424] <... futex resumed>)        = 0
[pid 19424] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19424] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19425] <... futex resumed>)        = 1
[pid 19425] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19425] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19424] <... futex resumed>)        = 0
[pid 19424] exit_group(0)               = ?
[pid 19425] <... futex resumed>)        = ?
[pid 19425] +++ exited with 0 +++
[pid 19424] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19424, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19426
./strace-static-x86_64: Process 19426 attached
[pid 19426] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19426] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19426] setpgid(0, 0)               = 0
[pid 19426] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19426] write(3, "1000", 4)         = 4
[pid 19426] close(3)                    = 0
[pid 19426] write(1, "executing program\n", 18executing program
) = 18
[pid 19426] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19426] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19426] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19426] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19426] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19426] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19426] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19427 attached
 => {parent_tid=[19427]}, 88) = 19427
[pid 19427] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19426] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19426] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19426] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19427] <... set_robust_list resumed>) = 0
[pid 19427] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19427] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19427] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19426] <... futex resumed>)        = 0
[pid 19426] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19426] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19427] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19427] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19426] <... futex resumed>)        = 0
[pid 19426] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19426] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19427] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19427] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19426] <... futex resumed>)        = 0
[pid 19426] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19426] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19427] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19427] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19426] <... futex resumed>)        = 0
[pid 19426] exit_group(0)               = ?
[pid 19427] +++ exited with 0 +++
[pid 19426] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19426, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19428
./strace-static-x86_64: Process 19428 attached
[pid 19428] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19428] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19428] setpgid(0, 0)               = 0
[pid 19428] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19428] write(3, "1000", 4)         = 4
[pid 19428] close(3)                    = 0
executing program
[pid 19428] write(1, "executing program\n", 18) = 18
[pid 19428] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19428] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19428] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19428] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19428] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19428] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19428] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19429 attached
 => {parent_tid=[19429]}, 88) = 19429
[pid 19429] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19428] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19429] <... set_robust_list resumed>) = 0
[pid 19428] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19429] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19428] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19429] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19428] <... futex resumed>)        = 0
[pid 19429] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19428] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19429] <... 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 19429] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19429] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19428] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19428] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19429] <... futex resumed>)        = 0
[pid 19429] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19428] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19429] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19429] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19428] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19428] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19429] <... futex resumed>)        = 0
[pid 19429] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19428] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19429] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19429] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19428] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19428] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19429] <... futex resumed>)        = 0
[pid 19429] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19428] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19429] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19429] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19428] <... futex resumed>)        = 0
[pid 19428] exit_group(0 <unfinished ...>
[pid 19429] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19428] <... exit_group resumed>)   = ?
[pid 19429] <... futex resumed>)        = ?
[pid 19429] +++ exited with 0 +++
[pid 19428] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19428, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19430 attached
, child_tidptr=0x55557c828690) = 19430
[pid 19430] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19430] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19430] setpgid(0, 0)               = 0
[pid 19430] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19430] write(3, "1000", 4)         = 4
[pid 19430] close(3)                    = 0
[pid 19430] write(1, "executing program\n", 18executing program
) = 18
[pid 19430] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19430] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19430] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19430] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19430] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19430] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19430] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19431]}, 88) = 19431
[pid 19430] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19430] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19430] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19431 attached
 <unfinished ...>
[pid 19431] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19431] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19431] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19431] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19430] <... futex resumed>)        = 0
[pid 19430] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19430] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19431] <... futex resumed>)        = 1
[pid 19431] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19431] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19430] <... futex resumed>)        = 0
[pid 19430] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19430] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19431] <... futex resumed>)        = 1
[pid 19431] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19431] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19430] <... futex resumed>)        = 0
[pid 19430] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19430] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19431] <... futex resumed>)        = 1
[pid 19431] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19431] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19430] <... futex resumed>)        = 0
[pid 19430] exit_group(0)               = ?
[pid 19431] <... futex resumed>)        = ?
[pid 19431] +++ exited with 0 +++
[pid 19430] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19430, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19432 attached
, child_tidptr=0x55557c828690) = 19432
[pid 19432] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19432] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19432] setpgid(0, 0)               = 0
[pid 19432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19432] write(3, "1000", 4)         = 4
[pid 19432] close(3)                    = 0
[pid 19432] write(1, "executing program\n", 18executing program
) = 18
[pid 19432] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19432] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19432] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19432] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19432] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19432] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19432] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19433 attached
 <unfinished ...>
[pid 19433] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19433] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19433] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19432] <... clone3 resumed> => {parent_tid=[19433]}, 88) = 19433
[pid 19432] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19432] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19433] <... futex resumed>)        = 0
[pid 19433] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19432] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19433] <... 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 19433] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19432] <... futex resumed>)        = 0
[pid 19432] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19433] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19432] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19433] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19433] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19432] <... futex resumed>)        = 0
[pid 19432] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19432] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19433] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19433] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19432] <... futex resumed>)        = 0
[pid 19432] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19432] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19433] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19433] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19432] <... futex resumed>)        = 0
[pid 19432] exit_group(0)               = ?
[pid 19433] +++ exited with 0 +++
[pid 19432] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19432, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19434
./strace-static-x86_64: Process 19434 attached
[pid 19434] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19434] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19434] setpgid(0, 0)               = 0
[pid 19434] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19434] write(3, "1000", 4)         = 4
[pid 19434] close(3executing program
)                    = 0
[pid 19434] write(1, "executing program\n", 18) = 18
[pid 19434] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19434] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19434] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19434] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19434] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19434] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19434] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19435]}, 88) = 19435
[pid 19434] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19434] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19434] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19435 attached
 <unfinished ...>
[pid 19435] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19435] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19435] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19435] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19434] <... futex resumed>)        = 0
[pid 19434] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19434] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19435] <... futex resumed>)        = 1
[pid 19435] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19435] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19434] <... futex resumed>)        = 0
[pid 19434] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19434] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19435] <... futex resumed>)        = 1
[pid 19435] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19435] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19434] <... futex resumed>)        = 0
[pid 19434] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19434] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19435] <... futex resumed>)        = 1
[pid 19435] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19435] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19434] <... futex resumed>)        = 0
[pid 19435] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19434] exit_group(0 <unfinished ...>
[pid 19435] <... futex resumed>)        = ?
[pid 19434] <... exit_group resumed>)   = ?
[pid 19435] +++ exited with 0 +++
[pid 19434] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19434, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19436
./strace-static-x86_64: Process 19436 attached
[pid 19436] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19436] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19436] setpgid(0, 0)               = 0
[pid 19436] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19436] write(3, "1000", 4)         = 4
[pid 19436] close(3)                    = 0
executing program
[pid 19436] write(1, "executing program\n", 18) = 18
[pid 19436] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19436] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19436] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19436] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19436] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19436] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19436] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19437 attached
 => {parent_tid=[19437]}, 88) = 19437
[pid 19436] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19436] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19436] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19437] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19437] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19437] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19437] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19436] <... futex resumed>)        = 0
[pid 19436] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19436] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19437] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19437] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19436] <... futex resumed>)        = 0
[pid 19436] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19436] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19437] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19437] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19436] <... futex resumed>)        = 0
[pid 19436] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19436] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19437] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19437] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19437] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19436] <... futex resumed>)        = 0
[pid 19436] exit_group(0)               = ?
[pid 19437] <... futex resumed>)        = ?
[pid 19437] +++ exited with 0 +++
[pid 19436] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19436, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19438
./strace-static-x86_64: Process 19438 attached
[pid 19438] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19438] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19438] setpgid(0, 0)               = 0
[pid 19438] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19438] write(3, "1000", 4)         = 4
[pid 19438] close(3executing program
)                    = 0
[pid 19438] write(1, "executing program\n", 18) = 18
[pid 19438] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19438] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19438] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19438] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19438] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19438] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19438] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19439]}, 88) = 19439
./strace-static-x86_64: Process 19439 attached
[pid 19438] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19439] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19438] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19439] <... set_robust_list resumed>) = 0
[pid 19439] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19438] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19439] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19438] <... futex resumed>)        = 0
[pid 19438] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19439] <... 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 19439] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19438] <... futex resumed>)        = 0
[pid 19438] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19438] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19439] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19439] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19438] <... futex resumed>)        = 0
[pid 19438] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19438] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19439] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19439] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19438] <... futex resumed>)        = 0
[pid 19438] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19438] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19439] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19439] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19439] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19438] <... futex resumed>)        = 0
[pid 19438] exit_group(0)               = ?
[pid 19439] <... futex resumed>)        = ?
[pid 19439] +++ exited with 0 +++
[pid 19438] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19438, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19440
./strace-static-x86_64: Process 19440 attached
[pid 19440] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19440] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19440] setpgid(0, 0)               = 0
[pid 19440] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19440] write(3, "1000", 4)         = 4
executing program
[pid 19440] close(3)                    = 0
[pid 19440] write(1, "executing program\n", 18) = 18
[pid 19440] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19440] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19440] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19440] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19440] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19440] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19440] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19441 attached
 => {parent_tid=[19441]}, 88) = 19441
[pid 19441] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19440] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19441] <... set_robust_list resumed>) = 0
[pid 19440] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19441] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19440] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19441] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19440] <... futex resumed>)        = 0
[pid 19441] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19440] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19441] <... 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 19441] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19440] <... futex resumed>)        = 0
[pid 19440] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19440] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19441] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19441] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19440] <... futex resumed>)        = 0
[pid 19440] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19440] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19441] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19441] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19440] <... futex resumed>)        = 0
[pid 19440] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19440] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19441] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19441] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19440] <... futex resumed>)        = 0
[pid 19440] exit_group(0)               = ?
[pid 19441] +++ exited with 0 +++
[pid 19440] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19440, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19442
./strace-static-x86_64: Process 19442 attached
[pid 19442] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19442] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19442] setpgid(0, 0)               = 0
[pid 19442] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19442] write(3, "1000", 4)         = 4
[pid 19442] close(3executing program
)                    = 0
[pid 19442] write(1, "executing program\n", 18) = 18
[pid 19442] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19442] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19442] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19442] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19442] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19442] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19442] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19443 attached
 => {parent_tid=[19443]}, 88) = 19443
[pid 19443] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19443] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19443] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19442] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19442] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19443] <... futex resumed>)        = 0
[pid 19443] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19442] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19443] <... 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 19443] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19442] <... futex resumed>)        = 0
[pid 19442] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19442] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19443] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19443] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19442] <... futex resumed>)        = 0
[pid 19442] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19442] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19443] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19443] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19442] <... futex resumed>)        = 0
[pid 19442] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19442] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19443] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19443] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19442] <... futex resumed>)        = 0
[pid 19442] exit_group(0)               = ?
[pid 19443] +++ exited with 0 +++
[pid 19442] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19442, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19444
./strace-static-x86_64: Process 19444 attached
[pid 19444] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19444] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19444] setpgid(0, 0)               = 0
[pid 19444] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19444] write(3, "1000", 4)         = 4
[pid 19444] close(3)                    = 0
executing program
[pid 19444] write(1, "executing program\n", 18) = 18
[pid 19444] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19444] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19444] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19444] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19444] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19444] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19444] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19445]}, 88) = 19445
[pid 19444] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19444] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19444] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19445 attached
 <unfinished ...>
[pid 19445] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19445] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19445] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19445] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19444] <... futex resumed>)        = 0
[pid 19444] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19444] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19445] <... futex resumed>)        = 1
[pid 19445] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19445] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19444] <... futex resumed>)        = 0
[pid 19444] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19444] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19445] <... futex resumed>)        = 1
[pid 19445] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19445] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19444] <... futex resumed>)        = 0
[pid 19444] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19444] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19445] <... futex resumed>)        = 1
[pid 19445] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19445] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19444] <... futex resumed>)        = 0
[pid 19444] exit_group(0)               = ?
[pid 19445] <... futex resumed>)        = ?
[pid 19445] +++ exited with 0 +++
[pid 19444] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19444, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19446
./strace-static-x86_64: Process 19446 attached
[pid 19446] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19446] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19446] setpgid(0, 0)               = 0
[pid 19446] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19446] write(3, "1000", 4)         = 4
[pid 19446] close(3)                    = 0
[pid 19446] write(1, "executing program\n", 18executing program
) = 18
[pid 19446] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19446] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19446] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19446] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19446] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19446] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19446] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19447]}, 88) = 19447
./strace-static-x86_64: Process 19447 attached
[pid 19446] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19447] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19447] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19447] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19446] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19446] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19447] <... futex resumed>)        = 0
[pid 19447] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19446] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19447] <... 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 19447] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19447] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19446] <... futex resumed>)        = 0
[pid 19446] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19447] <... futex resumed>)        = 0
[pid 19447] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19446] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19447] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19447] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19447] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19446] <... futex resumed>)        = 0
[pid 19446] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19446] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19447] <... futex resumed>)        = 0
[pid 19447] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19447] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19446] <... futex resumed>)        = 0
[pid 19446] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19446] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19447] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19447] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19446] <... futex resumed>)        = 0
[pid 19446] exit_group(0)               = ?
[pid 19447] +++ exited with 0 +++
[pid 19446] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19446, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19448
./strace-static-x86_64: Process 19448 attached
[pid 19448] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19448] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19448] setpgid(0, 0)               = 0
[pid 19448] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19448] write(3, "1000", 4)         = 4
[pid 19448] close(3executing program
)                    = 0
[pid 19448] write(1, "executing program\n", 18) = 18
[pid 19448] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19448] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19448] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19448] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19448] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19448] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19448] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19449 attached
 => {parent_tid=[19449]}, 88) = 19449
[pid 19448] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19448] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19448] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19449] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19449] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19449] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19449] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19448] <... futex resumed>)        = 0
[pid 19448] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19448] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19449] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19449] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19448] <... futex resumed>)        = 0
[pid 19448] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19448] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19449] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19449] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19448] <... futex resumed>)        = 0
[pid 19448] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19448] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19449] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19449] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19448] <... futex resumed>)        = 0
[pid 19448] exit_group(0)               = ?
[pid 19449] +++ exited with 0 +++
[pid 19448] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19448, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19450
./strace-static-x86_64: Process 19450 attached
[pid 19450] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19450] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19450] setpgid(0, 0)               = 0
[pid 19450] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19450] write(3, "1000", 4)         = 4
[pid 19450] close(3executing program
)                    = 0
[pid 19450] write(1, "executing program\n", 18) = 18
[pid 19450] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19450] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19450] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19450] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19450] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19450] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19450] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19451 attached
 <unfinished ...>
[pid 19451] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19451] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19451] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19450] <... clone3 resumed> => {parent_tid=[19451]}, 88) = 19451
[pid 19450] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19450] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19451] <... futex resumed>)        = 0
[pid 19451] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19450] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19451] <... 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 19451] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19450] <... futex resumed>)        = 0
[pid 19450] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19451] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19450] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19451] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19451] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19451] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19450] <... futex resumed>)        = 0
[pid 19450] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19451] <... futex resumed>)        = 0
[pid 19451] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19450] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19451] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19450] <... futex resumed>)        = 0
[pid 19450] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19450] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19451] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19451] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19450] <... futex resumed>)        = 0
[pid 19450] exit_group(0)               = ?
[pid 19451] +++ exited with 0 +++
[pid 19450] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19450, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19452
./strace-static-x86_64: Process 19452 attached
[pid 19452] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19452] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19452] setpgid(0, 0)               = 0
[pid 19452] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19452] write(3, "1000", 4)         = 4
[pid 19452] close(3)                    = 0
[pid 19452] write(1, "executing program\n", 18executing program
) = 18
[pid 19452] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19452] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19452] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19452] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19452] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19452] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19452] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19453 attached
 => {parent_tid=[19453]}, 88) = 19453
[pid 19452] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19452] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19452] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19453] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19453] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19453] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19453] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19452] <... futex resumed>)        = 0
[pid 19452] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19452] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19453] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19453] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19452] <... futex resumed>)        = 0
[pid 19452] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19452] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19453] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19453] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19452] <... futex resumed>)        = 0
[pid 19452] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19452] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19453] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19453] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19453] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19452] <... futex resumed>)        = 0
[pid 19452] exit_group(0)               = ?
[pid 19453] <... futex resumed>)        = ?
[pid 19453] +++ exited with 0 +++
[pid 19452] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19452, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19454
./strace-static-x86_64: Process 19454 attached
[pid 19454] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19454] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19454] setpgid(0, 0)               = 0
[pid 19454] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19454] write(3, "1000", 4executing program
)         = 4
[pid 19454] close(3)                    = 0
[pid 19454] write(1, "executing program\n", 18) = 18
[pid 19454] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19454] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19454] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19454] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19454] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19454] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19454] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19455 attached
 => {parent_tid=[19455]}, 88) = 19455
[pid 19455] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19454] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19455] <... set_robust_list resumed>) = 0
[pid 19454] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19455] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19454] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19455] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19454] <... futex resumed>)        = 0
[pid 19455] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19455] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19455] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19454] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19454] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19455] <... futex resumed>)        = 0
[pid 19455] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19454] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19455] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19454] <... futex resumed>)        = 0
[pid 19454] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19454] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19455] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19455] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19454] <... futex resumed>)        = 0
[pid 19454] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19454] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19455] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19455] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19455] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19454] <... futex resumed>)        = 0
[pid 19454] exit_group(0)               = ?
[pid 19455] <... futex resumed>)        = ?
[pid 19455] +++ exited with 0 +++
[pid 19454] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19454, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19456 attached
, child_tidptr=0x55557c828690) = 19456
[pid 19456] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19456] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19456] setpgid(0, 0)               = 0
[pid 19456] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19456] write(3, "1000", 4)         = 4
[pid 19456] close(3executing program
)                    = 0
[pid 19456] write(1, "executing program\n", 18) = 18
[pid 19456] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19456] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19456] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19456] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19456] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19456] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19456] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19457]}, 88) = 19457
./strace-static-x86_64: Process 19457 attached
[pid 19457] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19456] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19457] <... set_robust_list resumed>) = 0
[pid 19457] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19456] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19457] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19456] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19457] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19456] <... futex resumed>)        = 0
[pid 19456] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19457] <... 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 19457] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19456] <... futex resumed>)        = 0
[pid 19456] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19456] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19457] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19457] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19456] <... futex resumed>)        = 0
[pid 19456] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19456] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19457] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19457] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19456] <... futex resumed>)        = 0
[pid 19456] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19456] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19457] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19457] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19457] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19456] <... futex resumed>)        = 0
[pid 19456] exit_group(0)               = ?
[pid 19457] <... futex resumed>)        = ?
[pid 19457] +++ exited with 0 +++
[pid 19456] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19456, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19458 attached
 <unfinished ...>
[pid 19458] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19458] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19458
[pid 19458] <... prctl resumed>)        = 0
[pid 19458] setpgid(0, 0)               = 0
[pid 19458] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
executing program
[pid 19458] write(3, "1000", 4)         = 4
[pid 19458] close(3)                    = 0
[pid 19458] write(1, "executing program\n", 18) = 18
[pid 19458] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19458] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19458] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19458] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19458] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19458] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19458] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19459 attached
 => {parent_tid=[19459]}, 88) = 19459
[pid 19459] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19458] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19459] <... set_robust_list resumed>) = 0
[pid 19458] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19459] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19458] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19459] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19458] <... futex resumed>)        = 0
[pid 19459] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19458] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19459] <... 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 19459] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19458] <... futex resumed>)        = 0
[pid 19459] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19458] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19459] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19458] <... futex resumed>)        = 0
[pid 19459] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19458] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19459] <... futex resumed>)        = 0
[pid 19458] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19459] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19458] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19459] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19458] <... futex resumed>)        = 0
[pid 19458] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19459] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19458] <... futex resumed>)        = 0
[pid 19459] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19458] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19459] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19458] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19459] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19458] <... futex resumed>)        = 0
[pid 19459] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19458] exit_group(0 <unfinished ...>
[pid 19459] <... futex resumed>)        = ?
[pid 19458] <... exit_group resumed>)   = ?
[pid 19459] +++ exited with 0 +++
[pid 19458] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19458, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19460
./strace-static-x86_64: Process 19460 attached
[pid 19460] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19460] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19460] setpgid(0, 0)               = 0
[pid 19460] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19460] write(3, "1000", 4)         = 4
[pid 19460] close(3executing program
)                    = 0
[pid 19460] write(1, "executing program\n", 18) = 18
[pid 19460] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19460] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19460] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19460] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19460] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19460] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19460] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19461]}, 88) = 19461
./strace-static-x86_64: Process 19461 attached
[pid 19460] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19460] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19460] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19461] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19461] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19461] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19461] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19460] <... futex resumed>)        = 0
[pid 19461] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19460] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19461] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19460] <... futex resumed>)        = 0
[pid 19461] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19460] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19461] <... futex resumed>)        = 0
[pid 19460] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19461] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19460] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19461] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19460] <... futex resumed>)        = 0
[pid 19461] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19460] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19461] <... futex resumed>)        = 0
[pid 19460] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19461] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19460] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19461] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19460] <... futex resumed>)        = 0
[pid 19461] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19460] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19461] <... futex resumed>)        = 0
[pid 19460] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19461] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19460] exit_group(0 <unfinished ...>
[pid 19461] <... futex resumed>)        = ?
[pid 19460] <... exit_group resumed>)   = ?
[pid 19461] +++ exited with 0 +++
[pid 19460] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19460, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19462 attached
 <unfinished ...>
[pid 19462] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19462] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19462] setpgid(0, 0)               = 0
[pid 19462] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19462] write(3, "1000", 4)         = 4
[pid 19462] close(3)                    = 0
[pid 19462] write(1, "executing program\n", 18executing program
) = 18
[pid 19462] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19462] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19462] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19462] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19462] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19462
[pid 19462] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19462] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19463]}, 88) = 19463
./strace-static-x86_64: Process 19463 attached
[pid 19463] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19462] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19463] <... set_robust_list resumed>) = 0
[pid 19462] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19463] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19462] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19463] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19462] <... futex resumed>)        = 0
[pid 19463] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19462] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19463] <... 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 19463] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19462] <... futex resumed>)        = 0
[pid 19463] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19462] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19463] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19462] <... futex resumed>)        = 0
[pid 19463] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19462] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19463] <... futex resumed>)        = 0
[pid 19462] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19463] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19462] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19463] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19462] <... futex resumed>)        = 0
[pid 19463] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19462] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19463] <... futex resumed>)        = 0
[pid 19462] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19463] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19462] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19463] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19462] <... futex resumed>)        = 0
[pid 19463] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19462] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19463] <... futex resumed>)        = 0
[pid 19462] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19463] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19462] exit_group(0 <unfinished ...>
[pid 19463] <... futex resumed>)        = ?
[pid 19462] <... exit_group resumed>)   = ?
[pid 19463] +++ exited with 0 +++
[pid 19462] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19462, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19464
./strace-static-x86_64: Process 19464 attached
[pid 19464] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19464] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19464] setpgid(0, 0)               = 0
[pid 19464] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19464] write(3, "1000", 4)         = 4
[pid 19464] close(3)                    = 0
executing program
[pid 19464] write(1, "executing program\n", 18) = 18
[pid 19464] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19464] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19464] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19464] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19464] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19464] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19464] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19465 attached
 => {parent_tid=[19465]}, 88) = 19465
[pid 19464] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19464] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19464] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19465] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19465] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19465] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19465] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19464] <... futex resumed>)        = 0
[pid 19465] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19464] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19465] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19464] <... futex resumed>)        = 0
[pid 19465] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19464] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19465] <... futex resumed>)        = 0
[pid 19464] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19465] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19464] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19465] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19464] <... futex resumed>)        = 0
[pid 19465] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19464] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19465] <... futex resumed>)        = 0
[pid 19464] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19465] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19464] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19465] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19464] <... futex resumed>)        = 0
[pid 19465] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19464] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19465] <... futex resumed>)        = 0
[pid 19464] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19465] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19464] exit_group(0 <unfinished ...>
[pid 19465] <... futex resumed>)        = ?
[pid 19464] <... exit_group resumed>)   = ?
[pid 19465] +++ exited with 0 +++
[pid 19464] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19464, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19466
./strace-static-x86_64: Process 19466 attached
[pid 19466] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19466] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19466] setpgid(0, 0)               = 0
[pid 19466] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19466] write(3, "1000", 4)         = 4
[pid 19466] close(3)                    = 0
[pid 19466] write(1, "executing program\n", 18executing program
) = 18
[pid 19466] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19466] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19466] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19466] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19466] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19466] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19466] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19467]}, 88) = 19467
./strace-static-x86_64: Process 19467 attached
[pid 19467] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19467] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19467] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19466] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19466] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19467] <... futex resumed>)        = 0
[pid 19467] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19466] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19467] <... 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 19467] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19466] <... futex resumed>)        = 0
[pid 19466] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19466] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19467] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19467] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19466] <... futex resumed>)        = 0
[pid 19466] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19466] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19467] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19467] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19466] <... futex resumed>)        = 0
[pid 19466] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19466] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19467] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19467] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19466] <... futex resumed>)        = 0
[pid 19466] exit_group(0)               = ?
[pid 19467] +++ exited with 0 +++
[pid 19466] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19466, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19468 attached
 <unfinished ...>
[pid 19468] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19468
[pid 19468] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19468] setpgid(0, 0)               = 0
[pid 19468] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19468] write(3, "1000", 4)         = 4
[pid 19468] close(3)                    = 0
[pid 19468] write(1, "executing program\n", 18executing program
) = 18
[pid 19468] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19468] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19468] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19468] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19468] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19468] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19468] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19469 attached
 <unfinished ...>
[pid 19469] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19468] <... clone3 resumed> => {parent_tid=[19469]}, 88) = 19469
[pid 19468] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19469] <... set_robust_list resumed>) = 0
[pid 19468] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19469] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19468] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19469] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19468] <... futex resumed>)        = 0
[pid 19469] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19468] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19469] <... 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 19469] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19468] <... futex resumed>)        = 0
[pid 19468] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19468] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19469] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19469] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19468] <... futex resumed>)        = 0
[pid 19468] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19468] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19469] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19469] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19468] <... futex resumed>)        = 0
[pid 19468] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19468] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19469] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19469] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19468] <... futex resumed>)        = 0
[pid 19468] exit_group(0)               = ?
[pid 19469] +++ exited with 0 +++
[pid 19468] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19468, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19470
./strace-static-x86_64: Process 19470 attached
[pid 19470] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19470] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19470] setpgid(0, 0)               = 0
[pid 19470] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
executing program
[pid 19470] write(3, "1000", 4)         = 4
[pid 19470] close(3)                    = 0
[pid 19470] write(1, "executing program\n", 18) = 18
[pid 19470] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19470] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19470] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19470] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19470] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19470] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19470] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19471 attached
 => {parent_tid=[19471]}, 88) = 19471
[pid 19471] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19470] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19471] <... set_robust_list resumed>) = 0
[pid 19470] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19471] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19470] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19471] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19470] <... futex resumed>)        = 0
[pid 19470] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19471] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19471] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19470] <... futex resumed>)        = 0
[pid 19470] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19470] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19471] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19471] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19471] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19470] <... futex resumed>)        = 0
[pid 19470] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19470] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19471] <... futex resumed>)        = 0
[pid 19471] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19471] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19471] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19470] <... futex resumed>)        = 0
[pid 19470] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19470] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19471] <... futex resumed>)        = 0
[pid 19471] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19471] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19470] <... futex resumed>)        = 0
[pid 19470] exit_group(0 <unfinished ...>
[pid 19471] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19470] <... exit_group resumed>)   = ?
[pid 19471] <... futex resumed>)        = ?
[pid 19471] +++ exited with 0 +++
[pid 19470] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19470, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19472 attached
, child_tidptr=0x55557c828690) = 19472
[pid 19472] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19472] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19472] setpgid(0, 0)               = 0
[pid 19472] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19472] write(3, "1000", 4)         = 4
[pid 19472] close(3executing program
)                    = 0
[pid 19472] write(1, "executing program\n", 18) = 18
[pid 19472] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19472] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19472] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19472] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19472] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19472] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19472] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19473 attached
 => {parent_tid=[19473]}, 88) = 19473
[pid 19473] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19472] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19473] <... set_robust_list resumed>) = 0
[pid 19472] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19473] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19472] <... futex resumed>)        = 0
[pid 19473] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19473] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19473] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19472] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19472] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19473] <... futex resumed>)        = 0
[pid 19473] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19472] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19473] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19472] <... futex resumed>)        = 0
[pid 19472] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19473] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19472] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19473] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19473] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19472] <... futex resumed>)        = 0
[pid 19472] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19472] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19473] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19473] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19473] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19472] <... futex resumed>)        = 0
[pid 19472] exit_group(0)               = ?
[pid 19473] <... futex resumed>)        = ?
[pid 19473] +++ exited with 0 +++
[pid 19472] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19472, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19474 attached
, child_tidptr=0x55557c828690) = 19474
[pid 19474] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19474] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19474] setpgid(0, 0)               = 0
[pid 19474] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19474] write(3, "1000", 4)         = 4
[pid 19474] close(3executing program
)                    = 0
[pid 19474] write(1, "executing program\n", 18) = 18
[pid 19474] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19474] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19474] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19474] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19474] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19474] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19474] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19475]}, 88) = 19475
./strace-static-x86_64: Process 19475 attached
[pid 19475] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19474] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19475] <... set_robust_list resumed>) = 0
[pid 19475] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19474] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19475] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19474] <... futex resumed>)        = 0
[pid 19474] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19475] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19475] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19474] <... futex resumed>)        = 0
[pid 19475] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19474] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19475] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19474] <... futex resumed>)        = 0
[pid 19475] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19474] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19475] <... futex resumed>)        = 0
[pid 19474] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19475] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19474] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19475] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19474] <... futex resumed>)        = 0
[pid 19475] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19474] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19475] <... futex resumed>)        = 0
[pid 19474] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19475] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19474] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19475] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19474] <... futex resumed>)        = 0
[pid 19475] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19474] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19475] <... futex resumed>)        = 0
[pid 19474] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19475] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19474] exit_group(0 <unfinished ...>
[pid 19475] <... futex resumed>)        = ?
[pid 19474] <... exit_group resumed>)   = ?
[pid 19475] +++ exited with 0 +++
[pid 19474] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19474, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19476
./strace-static-x86_64: Process 19476 attached
[pid 19476] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19476] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19476] setpgid(0, 0)               = 0
[pid 19476] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19476] write(3, "1000", 4)         = 4
[pid 19476] close(3)                    = 0
[pid 19476] write(1, "executing program\n", 18executing program
) = 18
[pid 19476] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19476] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19476] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19476] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19476] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19476] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19476] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19477 attached
 => {parent_tid=[19477]}, 88) = 19477
[pid 19476] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19476] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19476] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19477] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19477] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19477] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19477] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19476] <... futex resumed>)        = 0
[pid 19477] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19476] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19477] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19476] <... futex resumed>)        = 0
[pid 19477] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19476] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19477] <... futex resumed>)        = 0
[pid 19476] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19477] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19476] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19477] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19476] <... futex resumed>)        = 0
[pid 19477] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19476] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19477] <... futex resumed>)        = 0
[pid 19476] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19477] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19476] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19476] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19477] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19477] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19476] <... futex resumed>)        = 0
[pid 19477] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19476] exit_group(0 <unfinished ...>
[pid 19477] <... futex resumed>)        = ?
[pid 19476] <... exit_group resumed>)   = ?
[pid 19477] +++ exited with 0 +++
[pid 19476] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19476, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19478 attached
, child_tidptr=0x55557c828690) = 19478
[pid 19478] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19478] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19478] setpgid(0, 0)               = 0
[pid 19478] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19478] write(3, "1000", 4)         = 4
[pid 19478] close(3)                    = 0
[pid 19478] write(1, "executing program\n", 18executing program
) = 18
[pid 19478] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19478] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19478] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19478] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19478] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19478] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19478] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19479 attached
 => {parent_tid=[19479]}, 88) = 19479
[pid 19478] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19478] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19478] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19479] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19479] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19479] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19479] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19478] <... futex resumed>)        = 0
[pid 19479] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19478] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19479] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19478] <... futex resumed>)        = 0
[pid 19479] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19478] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19479] <... futex resumed>)        = 0
[pid 19478] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19479] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19478] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19479] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19478] <... futex resumed>)        = 0
[pid 19479] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19478] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19479] <... futex resumed>)        = 0
[pid 19478] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19479] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19478] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19479] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19478] <... futex resumed>)        = 0
[pid 19479] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19478] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19479] <... futex resumed>)        = 0
[pid 19478] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19479] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19478] exit_group(0 <unfinished ...>
[pid 19479] <... futex resumed>)        = ?
[pid 19478] <... exit_group resumed>)   = ?
[pid 19479] +++ exited with 0 +++
[pid 19478] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19478, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19480
./strace-static-x86_64: Process 19480 attached
[pid 19480] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19480] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19480] setpgid(0, 0)               = 0
[pid 19480] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19480] write(3, "1000", 4)         = 4
[pid 19480] close(3executing program
)                    = 0
[pid 19480] write(1, "executing program\n", 18) = 18
[pid 19480] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19480] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19480] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19480] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19480] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19480] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19480] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19481 attached
 => {parent_tid=[19481]}, 88) = 19481
[pid 19480] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19480] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19480] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19481] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19481] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19481] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19481] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19480] <... futex resumed>)        = 0
[pid 19480] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19480] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19481] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19481] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19480] <... futex resumed>)        = 0
[pid 19480] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19480] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19481] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19481] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19480] <... futex resumed>)        = 0
[pid 19480] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19480] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19481] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19481] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19481] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19480] <... futex resumed>)        = 0
[pid 19480] exit_group(0)               = ?
[pid 19481] <... futex resumed>)        = ?
[pid 19481] +++ exited with 0 +++
[pid 19480] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19480, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19482 attached
, child_tidptr=0x55557c828690) = 19482
[pid 19482] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19482] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19482] setpgid(0, 0)               = 0
[pid 19482] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19482] write(3, "1000", 4)         = 4
[pid 19482] close(3executing program
)                    = 0
[pid 19482] write(1, "executing program\n", 18) = 18
[pid 19482] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19482] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19482] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19482] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19482] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19482] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19482] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19483]}, 88) = 19483
./strace-static-x86_64: Process 19483 attached
[pid 19482] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19483] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19482] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19482] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19482] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19483] <... set_robust_list resumed>) = 0
[pid 19483] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19483] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19483] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19482] <... futex resumed>)        = 0
[pid 19482] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19482] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19483] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19483] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19483] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19482] <... futex resumed>)        = 0
[pid 19482] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19482] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19483] <... futex resumed>)        = 0
[pid 19483] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19483] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19483] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19482] <... futex resumed>)        = 0
[pid 19482] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19482] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19483] <... futex resumed>)        = 0
[pid 19483] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19483] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19482] <... futex resumed>)        = 0
[pid 19482] exit_group(0)               = ?
[pid 19483] +++ exited with 0 +++
[pid 19482] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19482, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19484 attached
, child_tidptr=0x55557c828690) = 19484
[pid 19484] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19484] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19484] setpgid(0, 0)               = 0
[pid 19484] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19484] write(3, "1000", 4)         = 4
[pid 19484] close(3)                    = 0
executing program
[pid 19484] write(1, "executing program\n", 18) = 18
[pid 19484] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19484] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19484] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19484] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19484] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19484] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19484] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19485]}, 88) = 19485
./strace-static-x86_64: Process 19485 attached
[pid 19484] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19484] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19484] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19485] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19485] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19485] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19485] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19484] <... futex resumed>)        = 0
[pid 19484] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19484] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19485] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19485] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19484] <... futex resumed>)        = 0
[pid 19484] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19484] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19485] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19485] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19484] <... futex resumed>)        = 0
[pid 19484] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19484] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19485] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19485] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19484] <... futex resumed>)        = 0
[pid 19484] exit_group(0)               = ?
[pid 19485] +++ exited with 0 +++
[pid 19484] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19484, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19486 attached
 <unfinished ...>
[pid 19486] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19486
[pid 19486] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19486] setpgid(0, 0)               = 0
[pid 19486] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19486] write(3, "1000", 4)         = 4
[pid 19486] close(3)                    = 0
[pid 19486] write(1, "executing program\n", 18executing program
) = 18
[pid 19486] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19486] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19486] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19486] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19486] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19486] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19486] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19487 attached
 => {parent_tid=[19487]}, 88) = 19487
[pid 19486] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19486] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19486] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19487] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19487] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19487] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19487] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19486] <... futex resumed>)        = 0
[pid 19487] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19486] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19487] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19486] <... futex resumed>)        = 0
[pid 19487] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19486] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19487] <... futex resumed>)        = 0
[pid 19486] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19487] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19486] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19487] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19486] <... futex resumed>)        = 0
[pid 19487] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19486] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19487] <... futex resumed>)        = 0
[pid 19486] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19487] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19486] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19487] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19486] <... futex resumed>)        = 0
[pid 19487] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19486] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19487] <... futex resumed>)        = 0
[pid 19486] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19487] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19486] exit_group(0 <unfinished ...>
[pid 19487] <... futex resumed>)        = ?
[pid 19486] <... exit_group resumed>)   = ?
[pid 19487] +++ exited with 0 +++
[pid 19486] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19486, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19488
./strace-static-x86_64: Process 19488 attached
[pid 19488] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19488] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19488] setpgid(0, 0)               = 0
[pid 19488] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19488] write(3, "1000", 4)         = 4
[pid 19488] close(3)                    = 0
[pid 19488] write(1, "executing program\n", 18executing program
) = 18
[pid 19488] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19488] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19488] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19488] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19488] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19488] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19488] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19489 attached
 => {parent_tid=[19489]}, 88) = 19489
[pid 19488] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19489] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19488] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19488] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19488] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19489] <... set_robust_list resumed>) = 0
[pid 19489] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19489] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19489] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19488] <... futex resumed>)        = 0
[pid 19489] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19488] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19489] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19488] <... futex resumed>)        = 0
[pid 19489] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19488] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19489] <... futex resumed>)        = 0
[pid 19488] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19489] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19488] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19489] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19488] <... futex resumed>)        = 0
[pid 19489] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19488] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19489] <... futex resumed>)        = 0
[pid 19488] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19489] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19488] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19489] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19488] <... futex resumed>)        = 0
[pid 19489] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19488] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19489] <... futex resumed>)        = 0
[pid 19488] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19489] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19488] exit_group(0 <unfinished ...>
[pid 19489] <... futex resumed>)        = ?
[pid 19488] <... exit_group resumed>)   = ?
[pid 19489] +++ exited with 0 +++
[pid 19488] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19488, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19490
./strace-static-x86_64: Process 19490 attached
[pid 19490] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19490] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19490] setpgid(0, 0)               = 0
[pid 19490] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19490] write(3, "1000", 4)         = 4
[pid 19490] close(3)                    = 0
executing program
[pid 19490] write(1, "executing program\n", 18) = 18
[pid 19490] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19490] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19490] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19490] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19490] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19490] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19490] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19491 attached
 => {parent_tid=[19491]}, 88) = 19491
[pid 19491] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19490] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19491] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19490] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19491] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19490] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19491] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19490] <... futex resumed>)        = 0
[pid 19491] <... 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 19490] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19491] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19490] <... futex resumed>)        = 0
[pid 19491] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19490] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19491] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19490] <... futex resumed>)        = 0
[pid 19491] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19490] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19491] <... futex resumed>)        = 0
[pid 19490] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19491] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19490] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19491] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19490] <... futex resumed>)        = 0
[pid 19491] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19490] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19491] <... futex resumed>)        = 0
[pid 19490] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19491] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19490] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19491] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19490] <... futex resumed>)        = 0
[pid 19491] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19490] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19491] <... futex resumed>)        = 0
[pid 19490] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19491] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19490] exit_group(0)               = ?
[pid 19491] <... futex resumed>)        = ?
[pid 19491] +++ exited with 0 +++
[pid 19490] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19490, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19492
./strace-static-x86_64: Process 19492 attached
[pid 19492] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19492] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19492] setpgid(0, 0)               = 0
[pid 19492] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19492] write(3, "1000", 4)         = 4
[pid 19492] close(3executing program
)                    = 0
[pid 19492] write(1, "executing program\n", 18) = 18
[pid 19492] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19492] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19492] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19492] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19492] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19492] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19492] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19493]}, 88) = 19493
[pid 19492] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19492] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19492] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19493 attached
 <unfinished ...>
[pid 19493] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19493] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19493] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19493] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19492] <... futex resumed>)        = 0
[pid 19492] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19492] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19493] <... futex resumed>)        = 1
[pid 19493] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19493] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19492] <... futex resumed>)        = 0
[pid 19492] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19492] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19493] <... futex resumed>)        = 1
[pid 19493] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19493] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19492] <... futex resumed>)        = 0
[pid 19492] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19492] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19493] <... futex resumed>)        = 1
[pid 19493] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19493] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19492] <... futex resumed>)        = 0
[pid 19492] exit_group(0)               = ?
[pid 19493] <... futex resumed>)        = ?
[pid 19493] +++ exited with 0 +++
[pid 19492] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19492, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19494 attached
, child_tidptr=0x55557c828690) = 19494
[pid 19494] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19494] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19494] setpgid(0, 0)               = 0
[pid 19494] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19494] write(3, "1000", 4)         = 4
executing program
[pid 19494] close(3)                    = 0
[pid 19494] write(1, "executing program\n", 18) = 18
[pid 19494] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19494] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19494] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19494] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19494] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19494] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19494] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19495]}, 88) = 19495
[pid 19494] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19494] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19494] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19495 attached
 <unfinished ...>
[pid 19495] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19495] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19495] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19495] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19494] <... futex resumed>)        = 0
[pid 19494] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19494] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19495] <... futex resumed>)        = 1
[pid 19495] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19495] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19494] <... futex resumed>)        = 0
[pid 19494] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19494] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19495] <... futex resumed>)        = 1
[pid 19495] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19495] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19494] <... futex resumed>)        = 0
[pid 19494] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19494] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19495] <... futex resumed>)        = 1
[pid 19495] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19495] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19494] <... futex resumed>)        = 0
[pid 19494] exit_group(0)               = ?
[pid 19495] <... futex resumed>)        = ?
[pid 19495] +++ exited with 0 +++
[pid 19494] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19494, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19496
./strace-static-x86_64: Process 19496 attached
[pid 19496] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19496] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19496] setpgid(0, 0)               = 0
[pid 19496] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19496] write(3, "1000", 4)         = 4
[pid 19496] close(3executing program
)                    = 0
[pid 19496] write(1, "executing program\n", 18) = 18
[pid 19496] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19496] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19496] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19496] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19496] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19496] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19496] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19497]}, 88) = 19497
[pid 19496] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19496] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19496] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19497 attached
 <unfinished ...>
[pid 19497] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19497] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19497] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19497] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19496] <... futex resumed>)        = 0
[pid 19496] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19496] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19497] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19497] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19496] <... futex resumed>)        = 0
[pid 19496] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19496] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19497] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19497] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19496] <... futex resumed>)        = 0
[pid 19496] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19496] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19497] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19497] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19497] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19496] <... futex resumed>)        = 0
[pid 19496] exit_group(0)               = ?
[pid 19497] <... futex resumed>)        = ?
[pid 19497] +++ exited with 0 +++
[pid 19496] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19496, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19498
./strace-static-x86_64: Process 19498 attached
[pid 19498] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19498] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19498] setpgid(0, 0)               = 0
[pid 19498] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19498] write(3, "1000", 4)         = 4
[pid 19498] close(3)                    = 0
[pid 19498] write(1, "executing program\n", 18executing program
) = 18
[pid 19498] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19498] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19498] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19498] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19498] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19498] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19498] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19499]}, 88) = 19499
[pid 19498] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19498] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19498] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19499 attached
 <unfinished ...>
[pid 19499] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19499] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19499] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19499] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19498] <... futex resumed>)        = 0
[pid 19498] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19498] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19499] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19499] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19498] <... futex resumed>)        = 0
[pid 19498] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19498] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19499] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19499] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19498] <... futex resumed>)        = 0
[pid 19498] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19498] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19499] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19499] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19498] <... futex resumed>)        = 0
[pid 19498] exit_group(0)               = ?
[pid 19499] +++ exited with 0 +++
[pid 19498] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19498, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19500 attached
 <unfinished ...>
[pid 19500] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19500
[pid 19500] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19500] setpgid(0, 0)               = 0
[pid 19500] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19500] write(3, "1000", 4)         = 4
[pid 19500] close(3)                    = 0
executing program
[pid 19500] write(1, "executing program\n", 18) = 18
[pid 19500] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19500] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19500] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19500] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19500] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19500] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19500] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19501]}, 88) = 19501
./strace-static-x86_64: Process 19501 attached
[pid 19501] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19501] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19501] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19500] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19500] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19501] <... futex resumed>)        = 0
[pid 19500] <... futex resumed>)        = 1
[pid 19501] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19500] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19501] <... 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 19501] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19500] <... futex resumed>)        = 0
[pid 19501] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19500] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19501] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19500] <... futex resumed>)        = 0
[pid 19501] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19500] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19501] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19501] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19500] <... futex resumed>)        = 0
[pid 19501] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19500] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19501] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19500] <... futex resumed>)        = 0
[pid 19501] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19500] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19501] <... futex resumed>)        = 0
[pid 19500] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19500] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19501] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19500] <... futex resumed>)        = 0
[pid 19501] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19500] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19501] <... futex resumed>)        = 0
[pid 19500] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19501] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19500] exit_group(0 <unfinished ...>
[pid 19501] <... futex resumed>)        = ?
[pid 19500] <... exit_group resumed>)   = ?
[pid 19501] +++ exited with 0 +++
[pid 19500] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19500, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19502 attached
 <unfinished ...>
[pid 19502] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19502
[pid 19502] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19502] setpgid(0, 0)               = 0
[pid 19502] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19502] write(3, "1000", 4)         = 4
[pid 19502] close(3)                    = 0
executing program
[pid 19502] write(1, "executing program\n", 18) = 18
[pid 19502] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19502] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19502] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19502] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19502] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19502] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19502] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19503]}, 88) = 19503
[pid 19502] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19502] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19502] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19503 attached
 <unfinished ...>
[pid 19503] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19503] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19503] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19503] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19502] <... futex resumed>)        = 0
[pid 19503] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19502] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19503] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19502] <... futex resumed>)        = 0
[pid 19503] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19502] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19503] <... futex resumed>)        = 0
[pid 19502] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19503] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19502] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19503] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19502] <... futex resumed>)        = 0
[pid 19503] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19502] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19503] <... futex resumed>)        = 0
[pid 19502] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19503] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19502] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19503] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19502] <... futex resumed>)        = 0
[pid 19503] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19502] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19503] <... futex resumed>)        = 0
[pid 19502] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19503] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19502] exit_group(0 <unfinished ...>
[pid 19503] <... futex resumed>)        = ?
[pid 19502] <... exit_group resumed>)   = ?
[pid 19503] +++ exited with 0 +++
[pid 19502] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19502, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19504
./strace-static-x86_64: Process 19504 attached
[pid 19504] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19504] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19504] setpgid(0, 0)               = 0
[pid 19504] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19504] write(3, "1000", 4)         = 4
[pid 19504] close(3)                    = 0
[pid 19504] write(1, "executing program\n", 18executing program
) = 18
[pid 19504] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19504] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19504] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19504] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19504] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19504] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19504] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19505 attached
 => {parent_tid=[19505]}, 88) = 19505
[pid 19504] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19504] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19504] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19505] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19505] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19505] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19505] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19504] <... futex resumed>)        = 0
[pid 19505] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19504] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19505] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19504] <... futex resumed>)        = 0
[pid 19505] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19504] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19505] <... futex resumed>)        = 0
[pid 19504] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19505] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19504] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19505] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19504] <... futex resumed>)        = 0
[pid 19505] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19504] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19505] <... futex resumed>)        = 0
[pid 19504] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19505] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19504] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19505] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19504] <... futex resumed>)        = 0
[pid 19505] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19504] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19505] <... futex resumed>)        = 0
[pid 19504] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19505] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19504] exit_group(0 <unfinished ...>
[pid 19505] <... futex resumed>)        = ?
[pid 19504] <... exit_group resumed>)   = ?
[pid 19505] +++ exited with 0 +++
[pid 19504] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19504, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19506
./strace-static-x86_64: Process 19506 attached
[pid 19506] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19506] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19506] setpgid(0, 0)               = 0
[pid 19506] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19506] write(3, "1000", 4)         = 4
[pid 19506] close(3)                    = 0
executing program
[pid 19506] write(1, "executing program\n", 18) = 18
[pid 19506] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19506] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19506] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19506] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19506] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19506] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19506] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19507]}, 88) = 19507
./strace-static-x86_64: Process 19507 attached
[pid 19506] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19506] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19506] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19507] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19507] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19507] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19507] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19506] <... futex resumed>)        = 0
[pid 19506] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19506] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19507] <... futex resumed>)        = 1
[pid 19507] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19507] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19506] <... futex resumed>)        = 0
[pid 19506] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19506] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19507] <... futex resumed>)        = 1
[pid 19507] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19507] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19506] <... futex resumed>)        = 0
[pid 19506] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19506] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19507] <... futex resumed>)        = 1
[pid 19507] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19507] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19506] <... futex resumed>)        = 0
[pid 19506] exit_group(0)               = ?
[pid 19507] <... futex resumed>)        = ?
[pid 19507] +++ exited with 0 +++
[pid 19506] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19506, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19508
./strace-static-x86_64: Process 19508 attached
[pid 19508] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19508] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19508] setpgid(0, 0)               = 0
[pid 19508] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19508] write(3, "1000", 4)         = 4
executing program
[pid 19508] close(3)                    = 0
[pid 19508] write(1, "executing program\n", 18) = 18
[pid 19508] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19508] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19508] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19508] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19508] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19508] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19508] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19509 attached
 => {parent_tid=[19509]}, 88) = 19509
[pid 19509] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19509] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19509] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19508] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19508] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19509] <... futex resumed>)        = 0
[pid 19509] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19508] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19509] <... 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 19509] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19509] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19508] <... futex resumed>)        = 0
[pid 19508] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19508] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19509] <... futex resumed>)        = 0
[pid 19509] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19509] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19508] <... futex resumed>)        = 0
[pid 19508] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19508] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19509] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19509] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19508] <... futex resumed>)        = 0
[pid 19508] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19508] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19509] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19509] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19508] <... futex resumed>)        = 0
[pid 19508] exit_group(0)               = ?
[pid 19509] +++ exited with 0 +++
[pid 19508] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19508, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19510
./strace-static-x86_64: Process 19510 attached
[pid 19510] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19510] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19510] setpgid(0, 0)               = 0
[pid 19510] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19510] write(3, "1000", 4)         = 4
[pid 19510] close(3executing program
)                    = 0
[pid 19510] write(1, "executing program\n", 18) = 18
[pid 19510] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19510] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19510] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19510] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19510] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19510] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19510] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19511 attached
 => {parent_tid=[19511]}, 88) = 19511
[pid 19510] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19510] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19510] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19511] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19511] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19511] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19511] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19510] <... futex resumed>)        = 0
[pid 19510] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19510] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19511] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19511] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19510] <... futex resumed>)        = 0
[pid 19510] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19510] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19511] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19511] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19510] <... futex resumed>)        = 0
[pid 19510] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19510] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19511] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19511] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19511] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19510] <... futex resumed>)        = 0
[pid 19510] exit_group(0)               = ?
[pid 19511] <... futex resumed>)        = ?
[pid 19511] +++ exited with 0 +++
[pid 19510] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19510, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19512
./strace-static-x86_64: Process 19512 attached
[pid 19512] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19512] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19512] setpgid(0, 0)               = 0
[pid 19512] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19512] write(3, "1000", 4executing program
)         = 4
[pid 19512] close(3)                    = 0
[pid 19512] write(1, "executing program\n", 18) = 18
[pid 19512] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19512] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19512] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19512] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19512] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19512] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19512] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19513 attached
 => {parent_tid=[19513]}, 88) = 19513
[pid 19513] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19512] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19513] <... set_robust_list resumed>) = 0
[pid 19512] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19513] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19512] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19513] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19512] <... futex resumed>)        = 0
[pid 19513] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19512] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19513] <... 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 19513] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19512] <... futex resumed>)        = 0
[pid 19512] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19512] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19513] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19513] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19512] <... futex resumed>)        = 0
[pid 19512] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19512] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19513] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19513] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19512] <... futex resumed>)        = 0
[pid 19513] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19512] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19513] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19512] <... futex resumed>)        = 0
[pid 19513] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19512] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19513] <... futex resumed>)        = 0
[pid 19512] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19513] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19512] exit_group(0 <unfinished ...>
[pid 19513] <... futex resumed>)        = ?
[pid 19512] <... exit_group resumed>)   = ?
[pid 19513] +++ exited with 0 +++
[pid 19512] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19512, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19514
./strace-static-x86_64: Process 19514 attached
[pid 19514] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19514] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19514] setpgid(0, 0)               = 0
[pid 19514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19514] write(3, "1000", 4)         = 4
executing program
[pid 19514] close(3)                    = 0
[pid 19514] write(1, "executing program\n", 18) = 18
[pid 19514] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19514] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19514] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19514] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19514] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19514] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19514] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19515 attached
 => {parent_tid=[19515]}, 88) = 19515
[pid 19514] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19514] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19514] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19515] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19515] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19515] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19515] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19514] <... futex resumed>)        = 0
[pid 19514] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19514] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19515] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19515] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19514] <... futex resumed>)        = 0
[pid 19514] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19514] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19515] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19515] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19514] <... futex resumed>)        = 0
[pid 19514] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19514] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19515] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19515] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19514] <... futex resumed>)        = 0
[pid 19514] exit_group(0)               = ?
[pid 19515] +++ exited with 0 +++
[pid 19514] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19514, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19516
./strace-static-x86_64: Process 19516 attached
[pid 19516] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19516] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19516] setpgid(0, 0)               = 0
[pid 19516] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19516] write(3, "1000", 4)         = 4
[pid 19516] close(3)                    = 0
executing program
[pid 19516] write(1, "executing program\n", 18) = 18
[pid 19516] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19516] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19516] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19516] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19516] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19516] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19516] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19517]}, 88) = 19517
./strace-static-x86_64: Process 19517 attached
[pid 19517] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19517] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19517] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19516] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19516] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19517] <... futex resumed>)        = 0
[pid 19517] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19516] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19517] <... 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 19517] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19516] <... futex resumed>)        = 0
[pid 19516] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19516] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19517] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19517] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19516] <... futex resumed>)        = 0
[pid 19516] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19516] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19517] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19517] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19516] <... futex resumed>)        = 0
[pid 19516] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19516] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19517] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19517] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19516] <... futex resumed>)        = 0
[pid 19516] exit_group(0)               = ?
[pid 19517] +++ exited with 0 +++
[pid 19516] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19516, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19518 attached
 <unfinished ...>
[pid 19518] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19518] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19518] setpgid(0, 0)               = 0
[pid 19518] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19518
[pid 19518] <... openat resumed>)       = 3
[pid 19518] write(3, "1000", 4)         = 4
[pid 19518] close(3)                    = 0
executing program
[pid 19518] write(1, "executing program\n", 18) = 18
[pid 19518] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19518] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19518] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19518] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19518] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19518] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19518] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19519 attached
 => {parent_tid=[19519]}, 88) = 19519
[pid 19518] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19518] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19518] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19519] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19519] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19519] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19519] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19518] <... futex resumed>)        = 0
[pid 19518] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19518] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19519] <... futex resumed>)        = 1
[pid 19519] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19519] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19518] <... futex resumed>)        = 0
[pid 19518] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19518] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19519] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19519] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19518] <... futex resumed>)        = 0
[pid 19518] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19518] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19519] <... futex resumed>)        = 1
[pid 19519] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19519] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19518] <... futex resumed>)        = 0
[pid 19518] exit_group(0)               = ?
[pid 19519] <... futex resumed>)        = ?
[pid 19519] +++ exited with 0 +++
[pid 19518] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19518, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19520
./strace-static-x86_64: Process 19520 attached
[pid 19520] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19520] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19520] setpgid(0, 0)               = 0
[pid 19520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19520] write(3, "1000", 4)         = 4
[pid 19520] close(3)                    = 0
executing program
[pid 19520] write(1, "executing program\n", 18) = 18
[pid 19520] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19520] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19520] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19520] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19520] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19520] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19520] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19521 attached
 => {parent_tid=[19521]}, 88) = 19521
[pid 19520] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19520] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19520] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19521] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19521] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19521] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19521] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19520] <... futex resumed>)        = 0
[pid 19520] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19520] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19521] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19521] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19520] <... futex resumed>)        = 0
[pid 19520] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19520] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19521] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19521] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19520] <... futex resumed>)        = 0
[pid 19520] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19520] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19521] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19521] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19520] <... futex resumed>)        = 0
[pid 19520] exit_group(0)               = ?
[pid 19521] +++ exited with 0 +++
[pid 19520] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19520, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19522
./strace-static-x86_64: Process 19522 attached
[pid 19522] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19522] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19522] setpgid(0, 0)               = 0
[pid 19522] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19522] write(3, "1000", 4)         = 4
[pid 19522] close(3executing program
)                    = 0
[pid 19522] write(1, "executing program\n", 18) = 18
[pid 19522] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19522] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19522] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19522] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19522] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19522] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19522] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19523 attached
 <unfinished ...>
[pid 19523] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19523] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19523] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19522] <... clone3 resumed> => {parent_tid=[19523]}, 88) = 19523
[pid 19522] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19522] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19522] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19523] <... futex resumed>)        = 0
[pid 19523] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19523] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19522] <... futex resumed>)        = 0
[pid 19522] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19522] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19523] <... futex resumed>)        = 1
[pid 19523] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19523] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19522] <... futex resumed>)        = 0
[pid 19522] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19522] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19523] <... futex resumed>)        = 1
[pid 19523] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19523] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19522] <... futex resumed>)        = 0
[pid 19522] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19522] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19523] <... futex resumed>)        = 1
[pid 19523] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19523] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19522] <... futex resumed>)        = 0
[pid 19522] exit_group(0)               = ?
[pid 19523] <... futex resumed>)        = ?
[pid 19523] +++ exited with 0 +++
[pid 19522] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19522, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19524 attached
 <unfinished ...>
[pid 19524] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19524
[pid 19524] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19524] setpgid(0, 0)               = 0
[pid 19524] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19524] write(3, "1000", 4)         = 4
[pid 19524] close(3)                    = 0
[pid 19524] write(1, "executing program\n", 18executing program
) = 18
[pid 19524] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19524] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19524] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19524] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19524] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19524] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19524] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19525 attached
 => {parent_tid=[19525]}, 88) = 19525
[pid 19524] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19525] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19524] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19524] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19524] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19525] <... set_robust_list resumed>) = 0
[pid 19525] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19525] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19525] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19524] <... futex resumed>)        = 0
[pid 19524] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19524] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19525] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19525] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19524] <... futex resumed>)        = 0
[pid 19524] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19524] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19525] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19525] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19524] <... futex resumed>)        = 0
[pid 19524] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19524] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19525] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19525] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19525] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19524] <... futex resumed>)        = 0
[pid 19524] exit_group(0)               = ?
[pid 19525] <... futex resumed>)        = ?
[pid 19525] +++ exited with 0 +++
[pid 19524] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19524, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19526
./strace-static-x86_64: Process 19526 attached
[pid 19526] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19526] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19526] setpgid(0, 0)               = 0
[pid 19526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19526] write(3, "1000", 4)         = 4
[pid 19526] close(3executing program
)                    = 0
[pid 19526] write(1, "executing program\n", 18) = 18
[pid 19526] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19526] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19526] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19526] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19526] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19526] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19526] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19527 attached
 => {parent_tid=[19527]}, 88) = 19527
[pid 19526] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19526] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19526] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19527] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19527] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19527] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19527] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19526] <... futex resumed>)        = 0
[pid 19526] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19526] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19527] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19527] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19526] <... futex resumed>)        = 0
[pid 19526] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19526] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19527] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19527] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19526] <... futex resumed>)        = 0
[pid 19526] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19526] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19527] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19527] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19526] <... futex resumed>)        = 0
[pid 19527] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19526] exit_group(0 <unfinished ...>
[pid 19527] <... futex resumed>)        = ?
[pid 19526] <... exit_group resumed>)   = ?
[pid 19527] +++ exited with 0 +++
[pid 19526] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19526, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19528 attached
, child_tidptr=0x55557c828690) = 19528
[pid 19528] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19528] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19528] setpgid(0, 0)               = 0
[pid 19528] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19528] write(3, "1000", 4)         = 4
[pid 19528] close(3)                    = 0
executing program
[pid 19528] write(1, "executing program\n", 18) = 18
[pid 19528] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19528] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19528] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19528] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19528] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19528] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19528] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19529]}, 88) = 19529
[pid 19528] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19528] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19528] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19529 attached
 <unfinished ...>
[pid 19529] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19529] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19529] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19529] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19528] <... futex resumed>)        = 0
[pid 19528] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19528] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19529] <... futex resumed>)        = 1
[pid 19529] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19529] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19528] <... futex resumed>)        = 0
[pid 19528] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19528] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19529] <... futex resumed>)        = 1
[pid 19529] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19529] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19528] <... futex resumed>)        = 0
[pid 19528] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19528] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19529] <... futex resumed>)        = 1
[pid 19529] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19529] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19528] <... futex resumed>)        = 0
[pid 19528] exit_group(0)               = ?
[pid 19529] <... futex resumed>)        = ?
[pid 19529] +++ exited with 0 +++
[pid 19528] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19528, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19530
./strace-static-x86_64: Process 19530 attached
[pid 19530] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19530] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19530] setpgid(0, 0)               = 0
[pid 19530] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19530] write(3, "1000", 4)         = 4
[pid 19530] close(3)                    = 0
executing program
[pid 19530] write(1, "executing program\n", 18) = 18
[pid 19530] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19530] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19530] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19530] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19530] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19530] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19530] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19531 attached
 => {parent_tid=[19531]}, 88) = 19531
[pid 19530] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19530] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19530] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19531] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19531] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19531] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19531] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19530] <... futex resumed>)        = 0
[pid 19530] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19530] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19531] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19531] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19530] <... futex resumed>)        = 0
[pid 19530] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19530] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19531] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19531] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19530] <... futex resumed>)        = 0
[pid 19530] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19530] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19531] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19531] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19531] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19530] <... futex resumed>)        = 0
[pid 19530] exit_group(0)               = ?
[pid 19531] <... futex resumed>)        = ?
[pid 19531] +++ exited with 0 +++
[pid 19530] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19530, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19532
./strace-static-x86_64: Process 19532 attached
[pid 19532] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19532] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19532] setpgid(0, 0)               = 0
[pid 19532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19532] write(3, "1000", 4)         = 4
[pid 19532] close(3executing program
)                    = 0
[pid 19532] write(1, "executing program\n", 18) = 18
[pid 19532] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19532] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19532] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19532] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19532] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19532] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19532] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19533 attached
 => {parent_tid=[19533]}, 88) = 19533
[pid 19532] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19532] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19532] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19533] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19533] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19533] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19533] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19532] <... futex resumed>)        = 0
[pid 19532] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19532] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19533] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19533] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19532] <... futex resumed>)        = 0
[pid 19532] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19532] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19533] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19533] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19532] <... futex resumed>)        = 0
[pid 19532] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19532] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19533] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19533] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19532] <... futex resumed>)        = 0
[pid 19532] exit_group(0)               = ?
[pid 19533] +++ exited with 0 +++
[pid 19532] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19532, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19534
./strace-static-x86_64: Process 19534 attached
[pid 19534] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19534] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19534] setpgid(0, 0)               = 0
[pid 19534] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19534] write(3, "1000", 4)         = 4
[pid 19534] close(3)                    = 0
[pid 19534] write(1, "executing program\n", 18executing program
) = 18
[pid 19534] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19534] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19534] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19534] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19534] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19534] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19534] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19535 attached
 => {parent_tid=[19535]}, 88) = 19535
[pid 19534] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19534] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19534] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19535] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19535] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19535] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19535] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19534] <... futex resumed>)        = 0
[pid 19534] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19534] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19535] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19535] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19534] <... futex resumed>)        = 0
[pid 19534] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19534] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19535] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19535] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19534] <... futex resumed>)        = 0
[pid 19534] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19534] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19535] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19535] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19534] <... futex resumed>)        = 0
[pid 19534] exit_group(0)               = ?
[pid 19535] +++ exited with 0 +++
[pid 19534] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19534, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19536
./strace-static-x86_64: Process 19536 attached
[pid 19536] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19536] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19536] setpgid(0, 0)               = 0
[pid 19536] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19536] write(3, "1000", 4)         = 4
[pid 19536] close(3)                    = 0
executing program
[pid 19536] write(1, "executing program\n", 18) = 18
[pid 19536] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19536] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19536] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19536] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19536] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19536] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19536] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19537 attached
 => {parent_tid=[19537]}, 88) = 19537
[pid 19536] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19536] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19536] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19537] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19537] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19537] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19537] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19537] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19536] <... futex resumed>)        = 0
[pid 19536] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19536] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19537] <... futex resumed>)        = 0
[pid 19537] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19537] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19536] <... futex resumed>)        = 0
[pid 19536] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19536] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19537] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19537] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19536] <... futex resumed>)        = 0
[pid 19536] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19536] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19537] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19537] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19536] <... futex resumed>)        = 0
[pid 19536] exit_group(0)               = ?
[pid 19537] +++ exited with 0 +++
[pid 19536] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19536, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19538
./strace-static-x86_64: Process 19538 attached
[pid 19538] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19538] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19538] setpgid(0, 0)               = 0
[pid 19538] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19538] write(3, "1000", 4)         = 4
[pid 19538] close(3)                    = 0
executing program
[pid 19538] write(1, "executing program\n", 18) = 18
[pid 19538] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19538] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19538] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19538] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19538] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19538] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19538] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19539 attached
 => {parent_tid=[19539]}, 88) = 19539
[pid 19539] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19538] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19539] <... set_robust_list resumed>) = 0
[pid 19538] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19538] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19538] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19539] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19539] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19539] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19538] <... futex resumed>)        = 0
[pid 19539] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19538] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19538] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19539] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19539] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19539] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19538] <... futex resumed>)        = 0
[pid 19538] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19538] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19539] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19539] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19538] <... futex resumed>)        = 0
[pid 19538] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19538] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19539] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19539] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19538] <... futex resumed>)        = 0
[pid 19538] exit_group(0)               = ?
[pid 19539] +++ exited with 0 +++
[pid 19538] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19538, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19540
./strace-static-x86_64: Process 19540 attached
[pid 19540] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19540] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19540] setpgid(0, 0)               = 0
[pid 19540] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19540] write(3, "1000", 4)         = 4
[pid 19540] close(3)                    = 0
[pid 19540] write(1, "executing program\n", 18executing program
) = 18
[pid 19540] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19540] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19540] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19540] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19540] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19540] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19540] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19541]}, 88) = 19541
./strace-static-x86_64: Process 19541 attached
[pid 19540] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19540] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19540] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19541] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19541] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19541] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19541] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19540] <... futex resumed>)        = 0
[pid 19541] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19540] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19541] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19540] <... futex resumed>)        = 0
[pid 19541] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19540] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19541] <... futex resumed>)        = 0
[pid 19540] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19541] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19540] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19541] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19540] <... futex resumed>)        = 0
[pid 19541] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19540] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19541] <... futex resumed>)        = 0
[pid 19540] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19541] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19540] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19541] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19540] <... futex resumed>)        = 0
[pid 19541] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19540] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19541] <... futex resumed>)        = 0
[pid 19540] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19541] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19540] exit_group(0 <unfinished ...>
[pid 19541] <... futex resumed>)        = ?
[pid 19540] <... exit_group resumed>)   = ?
[pid 19541] +++ exited with 0 +++
[pid 19540] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19540, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19542
./strace-static-x86_64: Process 19542 attached
[pid 19542] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19542] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19542] setpgid(0, 0)               = 0
[pid 19542] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19542] write(3, "1000", 4)         = 4
[pid 19542] close(3)                    = 0
[pid 19542] write(1, "executing program\n", 18executing program
) = 18
[pid 19542] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19542] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19542] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19542] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19542] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19542] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19542] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19543]}, 88) = 19543
[pid 19542] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 19543 attached
 <unfinished ...>
[pid 19543] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19543] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19543] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19542] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19542] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19543] <... futex resumed>)        = 0
[pid 19542] <... futex resumed>)        = 1
[pid 19543] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19542] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19543] <... 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 19543] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19542] <... futex resumed>)        = 0
[pid 19543] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19542] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19543] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19542] <... futex resumed>)        = 0
[pid 19543] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19542] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19543] <... futex resumed>)        = 0
[pid 19542] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19543] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19542] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19543] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19542] <... futex resumed>)        = 0
[pid 19543] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19542] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19543] <... futex resumed>)        = 0
[pid 19542] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19543] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19542] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19543] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19542] <... futex resumed>)        = 0
[pid 19543] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19542] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19543] <... futex resumed>)        = 0
[pid 19542] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19543] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19542] exit_group(0 <unfinished ...>
[pid 19543] <... futex resumed>)        = ?
[pid 19542] <... exit_group resumed>)   = ?
[pid 19543] +++ exited with 0 +++
[pid 19542] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19542, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19544
./strace-static-x86_64: Process 19544 attached
[pid 19544] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19544] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19544] setpgid(0, 0)               = 0
[pid 19544] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19544] write(3, "1000", 4)         = 4
[pid 19544] close(3)                    = 0
[pid 19544] write(1, "executing program\n", 18executing program
) = 18
[pid 19544] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19544] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19544] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19544] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19544] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19544] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19544] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19545]}, 88) = 19545
./strace-static-x86_64: Process 19545 attached
[pid 19545] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19545] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19545] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19544] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19544] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19545] <... futex resumed>)        = 0
[pid 19544] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19545] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19545] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19544] <... futex resumed>)        = 0
[pid 19545] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19544] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19545] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19544] <... futex resumed>)        = 0
[pid 19545] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19544] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19545] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19545] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19545] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19544] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19544] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19545] <... futex resumed>)        = 0
[pid 19544] <... futex resumed>)        = 1
[pid 19545] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19544] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19545] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19545] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19544] <... futex resumed>)        = 0
[pid 19545] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19544] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19545] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19544] <... futex resumed>)        = 0
[pid 19545] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19544] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19545] <... futex resumed>)        = 0
[pid 19544] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19545] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19544] exit_group(0 <unfinished ...>
[pid 19545] <... futex resumed>)        = ?
[pid 19544] <... exit_group resumed>)   = ?
[pid 19545] +++ exited with 0 +++
[pid 19544] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19544, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19546
./strace-static-x86_64: Process 19546 attached
[pid 19546] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19546] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19546] setpgid(0, 0)               = 0
[pid 19546] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19546] write(3, "1000", 4)         = 4
[pid 19546] close(3)                    = 0
executing program
[pid 19546] write(1, "executing program\n", 18) = 18
[pid 19546] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19546] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19546] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19546] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19546] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19546] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19546] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19547 attached
 => {parent_tid=[19547]}, 88) = 19547
[pid 19546] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19546] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19546] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19547] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19547] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19547] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19547] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19546] <... futex resumed>)        = 0
[pid 19546] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19546] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19547] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19547] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19546] <... futex resumed>)        = 0
[pid 19546] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19546] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19547] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19547] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19546] <... futex resumed>)        = 0
[pid 19546] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19546] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19547] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19547] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19546] <... futex resumed>)        = 0
[pid 19546] exit_group(0)               = ?
[pid 19547] +++ exited with 0 +++
[pid 19546] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19546, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19548
./strace-static-x86_64: Process 19548 attached
[pid 19548] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19548] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19548] setpgid(0, 0)               = 0
[pid 19548] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19548] write(3, "1000", 4executing program
)         = 4
[pid 19548] close(3)                    = 0
[pid 19548] write(1, "executing program\n", 18) = 18
[pid 19548] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19548] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19548] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19548] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19548] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19548] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19548] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19549]}, 88) = 19549
./strace-static-x86_64: Process 19549 attached
[pid 19549] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19549] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19549] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19548] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19548] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19549] <... futex resumed>)        = 0
[pid 19549] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19548] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19549] <... 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 19549] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19548] <... futex resumed>)        = 0
[pid 19548] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19548] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19549] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19549] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19548] <... futex resumed>)        = 0
[pid 19548] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19548] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19549] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19549] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19548] <... futex resumed>)        = 0
[pid 19548] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19548] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19549] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19549] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19548] <... futex resumed>)        = 0
[pid 19548] exit_group(0)               = ?
[pid 19549] +++ exited with 0 +++
[pid 19548] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19548, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19550
./strace-static-x86_64: Process 19550 attached
[pid 19550] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19550] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19550] setpgid(0, 0)               = 0
[pid 19550] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19550] write(3, "1000", 4)         = 4
[pid 19550] close(3executing program
)                    = 0
[pid 19550] write(1, "executing program\n", 18) = 18
[pid 19550] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19550] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19550] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19550] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19550] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19550] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19550] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19551 attached
 => {parent_tid=[19551]}, 88) = 19551
[pid 19550] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19550] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19550] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19551] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19551] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19551] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19551] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19550] <... futex resumed>)        = 0
[pid 19550] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19550] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19551] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19551] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19550] <... futex resumed>)        = 0
[pid 19550] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19550] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19551] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19551] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19550] <... futex resumed>)        = 0
[pid 19550] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19550] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19551] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19551] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19550] <... futex resumed>)        = 0
[pid 19550] exit_group(0)               = ?
[pid 19551] +++ exited with 0 +++
[pid 19550] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19550, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19552
./strace-static-x86_64: Process 19552 attached
[pid 19552] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19552] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19552] setpgid(0, 0)               = 0
[pid 19552] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19552] write(3, "1000", 4)         = 4
[pid 19552] close(3)                    = 0
[pid 19552] write(1, "executing program\n", 18executing program
) = 18
[pid 19552] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19552] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19552] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19552] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19552] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19552] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19552] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19553]}, 88) = 19553
[pid 19552] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19552] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19552] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19553 attached
 <unfinished ...>
[pid 19553] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19553] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19553] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19553] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19552] <... futex resumed>)        = 0
[pid 19552] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19552] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19553] <... futex resumed>)        = 1
[pid 19553] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19553] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19552] <... futex resumed>)        = 0
[pid 19552] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19552] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19553] <... futex resumed>)        = 1
[pid 19553] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19553] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19552] <... futex resumed>)        = 0
[pid 19552] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19552] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19553] <... futex resumed>)        = 1
[pid 19553] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19553] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19552] <... futex resumed>)        = 0
[pid 19552] exit_group(0)               = ?
[pid 19553] <... futex resumed>)        = ?
[pid 19553] +++ exited with 0 +++
[pid 19552] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19552, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19554
./strace-static-x86_64: Process 19554 attached
[pid 19554] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19554] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19554] setpgid(0, 0)               = 0
[pid 19554] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19554] write(3, "1000", 4)         = 4
[pid 19554] close(3)                    = 0
executing program
[pid 19554] write(1, "executing program\n", 18) = 18
[pid 19554] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19554] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19554] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19554] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19554] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19554] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19554] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19555 attached
 => {parent_tid=[19555]}, 88) = 19555
[pid 19554] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19554] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19554] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19555] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19555] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19555] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19555] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19554] <... futex resumed>)        = 0
[pid 19554] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19554] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19555] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19555] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19554] <... futex resumed>)        = 0
[pid 19554] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19554] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19555] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19555] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19554] <... futex resumed>)        = 0
[pid 19554] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19554] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19555] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19555] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19554] <... futex resumed>)        = 0
[pid 19554] exit_group(0)               = ?
[pid 19555] +++ exited with 0 +++
[pid 19554] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19554, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19556 attached
 <unfinished ...>
[pid 19556] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19556] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19556
[pid 19556] <... prctl resumed>)        = 0
[pid 19556] setpgid(0, 0)               = 0
[pid 19556] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19556] write(3, "1000", 4)         = 4
[pid 19556] close(3executing program
)                    = 0
[pid 19556] write(1, "executing program\n", 18) = 18
[pid 19556] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19556] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19556] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19556] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19556] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19556] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19556] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19557]}, 88) = 19557
./strace-static-x86_64: Process 19557 attached
[pid 19556] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19557] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19557] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19557] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19556] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19556] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19557] <... futex resumed>)        = 0
[pid 19557] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19556] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19557] <... 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 19557] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19556] <... futex resumed>)        = 0
[pid 19556] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19556] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19557] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19557] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19556] <... futex resumed>)        = 0
[pid 19556] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19556] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19557] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19557] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19556] <... futex resumed>)        = 0
[pid 19556] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19556] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19557] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19557] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19556] <... futex resumed>)        = 0
[pid 19556] exit_group(0)               = ?
[pid 19557] +++ exited with 0 +++
[pid 19556] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19556, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19558 attached
 <unfinished ...>
[pid 19558] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19558] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19558] setpgid(0, 0)               = 0
[pid 19558] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19558
[pid 19558] <... openat resumed>)       = 3
[pid 19558] write(3, "1000", 4)         = 4
[pid 19558] close(3)                    = 0
[pid 19558] write(1, "executing program\n", 18executing program
) = 18
[pid 19558] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19558] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19558] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19558] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19558] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19558] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19558] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19559]}, 88) = 19559
./strace-static-x86_64: Process 19559 attached
[pid 19559] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19559] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19559] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19558] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19558] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19559] <... futex resumed>)        = 0
[pid 19559] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19558] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19559] <... 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 19559] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19559] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19558] <... futex resumed>)        = 0
[pid 19558] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19559] <... futex resumed>)        = 0
[pid 19558] <... futex resumed>)        = 1
[pid 19559] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19558] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19559] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19559] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19558] <... futex resumed>)        = 0
[pid 19559] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19558] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19559] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19558] <... futex resumed>)        = 0
[pid 19559] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19558] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19559] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19559] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19558] <... futex resumed>)        = 0
[pid 19559] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19558] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19558] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19559] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19559] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19558] <... futex resumed>)        = 0
[pid 19559] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19558] exit_group(0)               = ?
[pid 19559] <... futex resumed>)        = ?
[pid 19559] +++ exited with 0 +++
[pid 19558] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19558, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19560
./strace-static-x86_64: Process 19560 attached
[pid 19560] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19560] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19560] setpgid(0, 0)               = 0
[pid 19560] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19560] write(3, "1000", 4)         = 4
[pid 19560] close(3)                    = 0
executing program
[pid 19560] write(1, "executing program\n", 18) = 18
[pid 19560] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19560] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19560] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19560] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19560] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19560] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19560] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19561]}, 88) = 19561
[pid 19560] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19560] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19560] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19561 attached
 <unfinished ...>
[pid 19561] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19561] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19561] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19561] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19560] <... futex resumed>)        = 0
[pid 19561] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19560] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19561] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19560] <... futex resumed>)        = 0
[pid 19561] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19560] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19561] <... futex resumed>)        = 0
[pid 19560] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19561] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19560] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19561] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19560] <... futex resumed>)        = 0
[pid 19561] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19560] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19561] <... futex resumed>)        = 0
[pid 19560] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19561] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19560] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19561] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19560] <... futex resumed>)        = 0
[pid 19561] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19560] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19561] <... futex resumed>)        = 0
[pid 19560] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19561] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19560] exit_group(0 <unfinished ...>
[pid 19561] <... futex resumed>)        = ?
[pid 19560] <... exit_group resumed>)   = ?
[pid 19561] +++ exited with 0 +++
[pid 19560] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19560, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19562 attached
 <unfinished ...>
[pid 19562] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19562] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19562] setpgid(0, 0)               = 0
[pid 19562] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19562
[pid 19562] <... openat resumed>)       = 3
[pid 19562] write(3, "1000", 4)         = 4
[pid 19562] close(3executing program
)                    = 0
[pid 19562] write(1, "executing program\n", 18) = 18
[pid 19562] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19562] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19562] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19562] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19562] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19562] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19562] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19563 attached
 <unfinished ...>
[pid 19563] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19562] <... clone3 resumed> => {parent_tid=[19563]}, 88) = 19563
[pid 19563] <... set_robust_list resumed>) = 0
[pid 19562] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19563] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19562] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19563] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19562] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19563] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19562] <... futex resumed>)        = 0
[pid 19563] <... 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 19562] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19563] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19562] <... futex resumed>)        = 0
[pid 19563] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19562] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19563] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19562] <... futex resumed>)        = 0
[pid 19563] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19562] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19563] <... futex resumed>)        = 0
[pid 19562] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19563] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19562] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19563] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19562] <... futex resumed>)        = 0
[pid 19563] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19562] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19563] <... futex resumed>)        = 0
[pid 19562] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19563] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19562] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19563] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19562] <... futex resumed>)        = 0
[pid 19563] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19562] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19563] <... futex resumed>)        = 0
[pid 19562] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19563] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19562] exit_group(0 <unfinished ...>
[pid 19563] <... futex resumed>)        = ?
[pid 19562] <... exit_group resumed>)   = ?
[pid 19563] +++ exited with 0 +++
[pid 19562] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19562, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19564
./strace-static-x86_64: Process 19564 attached
[pid 19564] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19564] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19564] setpgid(0, 0)               = 0
[pid 19564] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19564] write(3, "1000", 4)         = 4
[pid 19564] close(3)                    = 0
[pid 19564] write(1, "executing program\n", 18executing program
) = 18
[pid 19564] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19564] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19564] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19564] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19564] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19564] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19564] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19565 attached
 => {parent_tid=[19565]}, 88) = 19565
[pid 19564] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19564] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19564] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19565] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19565] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19565] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19565] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19564] <... futex resumed>)        = 0
[pid 19565] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19564] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19565] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19564] <... futex resumed>)        = 0
[pid 19565] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19564] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19565] <... futex resumed>)        = 0
[pid 19564] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19565] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19564] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19565] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19564] <... futex resumed>)        = 0
[pid 19565] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19564] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19565] <... futex resumed>)        = 0
[pid 19564] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19565] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19564] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19565] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19564] <... futex resumed>)        = 0
[pid 19565] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19564] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19565] <... futex resumed>)        = 0
[pid 19564] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19565] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19564] exit_group(0 <unfinished ...>
[pid 19565] <... futex resumed>)        = ?
[pid 19564] <... exit_group resumed>)   = ?
[pid 19565] +++ exited with 0 +++
[pid 19564] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19564, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19566 attached
, child_tidptr=0x55557c828690) = 19566
[pid 19566] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19566] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19566] setpgid(0, 0)               = 0
[pid 19566] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19566] write(3, "1000", 4)         = 4
[pid 19566] close(3)                    = 0
[pid 19566] write(1, "executing program\n", 18executing program
) = 18
[pid 19566] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19566] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19566] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19566] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19566] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19566] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19566] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19567 attached
 => {parent_tid=[19567]}, 88) = 19567
[pid 19567] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19566] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19567] <... set_robust_list resumed>) = 0
[pid 19566] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19567] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19566] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19567] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19566] <... futex resumed>)        = 0
[pid 19567] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19566] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19567] <... 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 19567] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19566] <... futex resumed>)        = 0
[pid 19567] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19566] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19567] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19566] <... futex resumed>)        = 0
[pid 19567] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19566] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19567] <... futex resumed>)        = 0
[pid 19566] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19567] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19566] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19567] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19566] <... futex resumed>)        = 0
[pid 19567] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19566] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19567] <... futex resumed>)        = 0
[pid 19566] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19567] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19566] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19567] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19566] <... futex resumed>)        = 0
[pid 19567] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19566] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19567] <... futex resumed>)        = 0
[pid 19566] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19567] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19566] exit_group(0 <unfinished ...>
[pid 19567] <... futex resumed>)        = ?
[pid 19566] <... exit_group resumed>)   = ?
[pid 19567] +++ exited with 0 +++
[pid 19566] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19566, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19568 attached
 <unfinished ...>
[pid 19568] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19568] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19568] setpgid(0, 0)               = 0
[pid 19568] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19568
[pid 19568] <... openat resumed>)       = 3
[pid 19568] write(3, "1000", 4)         = 4
[pid 19568] close(3)                    = 0
[pid 19568] write(1, "executing program\n", 18executing program
) = 18
[pid 19568] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19568] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19568] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19568] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19568] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19568] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19568] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19569 attached
 => {parent_tid=[19569]}, 88) = 19569
[pid 19568] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19568] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19568] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19569] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19569] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19569] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19569] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19568] <... futex resumed>)        = 0
[pid 19569] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19568] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19569] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19568] <... futex resumed>)        = 0
[pid 19569] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19568] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19569] <... futex resumed>)        = 0
[pid 19568] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19569] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19568] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19569] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19568] <... futex resumed>)        = 0
[pid 19569] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19568] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19569] <... futex resumed>)        = 0
[pid 19568] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19569] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19568] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19569] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19568] <... futex resumed>)        = 0
[pid 19569] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19568] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19569] <... futex resumed>)        = 0
[pid 19568] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19569] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19568] exit_group(0 <unfinished ...>
[pid 19569] <... futex resumed>)        = ?
[pid 19568] <... exit_group resumed>)   = ?
[pid 19569] +++ exited with 0 +++
[pid 19568] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19568, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19570 attached
, child_tidptr=0x55557c828690) = 19570
[pid 19570] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19570] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19570] setpgid(0, 0)               = 0
[pid 19570] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19570] write(3, "1000", 4)         = 4
[pid 19570] close(3)                    = 0
executing program
[pid 19570] write(1, "executing program\n", 18) = 18
[pid 19570] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19570] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19570] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19570] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19570] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19570] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19570] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19571 attached
 => {parent_tid=[19571]}, 88) = 19571
[pid 19570] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19570] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19570] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19571] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19571] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19571] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19571] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19570] <... futex resumed>)        = 0
[pid 19571] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19570] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19571] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19570] <... futex resumed>)        = 0
[pid 19571] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19570] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19571] <... futex resumed>)        = 0
[pid 19570] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19571] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19570] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19571] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19570] <... futex resumed>)        = 0
[pid 19571] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19570] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19571] <... futex resumed>)        = 0
[pid 19570] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19571] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19570] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19571] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19570] <... futex resumed>)        = 0
[pid 19571] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19570] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19571] <... futex resumed>)        = 0
[pid 19570] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19571] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19570] exit_group(0 <unfinished ...>
[pid 19571] <... futex resumed>)        = ?
[pid 19570] <... exit_group resumed>)   = ?
[pid 19571] +++ exited with 0 +++
[pid 19570] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19570, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19572
./strace-static-x86_64: Process 19572 attached
[pid 19572] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19572] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19572] setpgid(0, 0)               = 0
[pid 19572] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19572] write(3, "1000", 4)         = 4
[pid 19572] close(3)                    = 0
[pid 19572] write(1, "executing program\n", 18executing program
) = 18
[pid 19572] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19572] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19572] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19572] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19572] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19572] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19572] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19573 attached
 => {parent_tid=[19573]}, 88) = 19573
[pid 19572] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19573] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19573] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19573] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19572] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19572] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19573] <... futex resumed>)        = 0
[pid 19572] <... futex resumed>)        = 1
[pid 19573] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19572] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19573] <... 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 19573] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19572] <... futex resumed>)        = 0
[pid 19573] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19572] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19573] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19572] <... futex resumed>)        = 0
[pid 19573] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19573] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19572] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19572] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19573] <... futex resumed>)        = 0
[pid 19572] <... futex resumed>)        = 1
[pid 19573] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19572] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19573] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19573] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19572] <... futex resumed>)        = 0
[pid 19573] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19572] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19573] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19572] <... futex resumed>)        = 0
[pid 19573] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19572] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19573] <... futex resumed>)        = 0
[pid 19572] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19573] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19572] exit_group(0 <unfinished ...>
[pid 19573] <... futex resumed>)        = ?
[pid 19572] <... exit_group resumed>)   = ?
[pid 19573] +++ exited with 0 +++
[pid 19572] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19572, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19574 attached
, child_tidptr=0x55557c828690) = 19574
[pid 19574] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19574] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19574] setpgid(0, 0)               = 0
[pid 19574] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19574] write(3, "1000", 4)         = 4
[pid 19574] close(3executing program
)                    = 0
[pid 19574] write(1, "executing program\n", 18) = 18
[pid 19574] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19574] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19574] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19574] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19574] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19574] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19574] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19575 attached
 <unfinished ...>
[pid 19575] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19575] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19575] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19574] <... clone3 resumed> => {parent_tid=[19575]}, 88) = 19575
[pid 19574] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19574] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19575] <... futex resumed>)        = 0
[pid 19575] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19574] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19575] <... 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 19575] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19574] <... futex resumed>)        = 0
[pid 19574] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19575] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19574] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19575] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19575] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19574] <... futex resumed>)        = 0
[pid 19574] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19574] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19575] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19575] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19574] <... futex resumed>)        = 0
[pid 19574] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19574] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19575] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19575] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19574] <... futex resumed>)        = 0
[pid 19574] exit_group(0)               = ?
[pid 19575] +++ exited with 0 +++
[pid 19574] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19574, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19576
./strace-static-x86_64: Process 19576 attached
[pid 19576] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19576] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19576] setpgid(0, 0)               = 0
[pid 19576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19576] write(3, "1000", 4)         = 4
[pid 19576] close(3)                    = 0
executing program
[pid 19576] write(1, "executing program\n", 18) = 18
[pid 19576] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19576] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19576] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19576] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19576] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19576] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19576] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19577 attached
 => {parent_tid=[19577]}, 88) = 19577
[pid 19577] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19576] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19577] <... set_robust_list resumed>) = 0
[pid 19576] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19577] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19576] <... futex resumed>)        = 0
[pid 19577] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19577] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19576] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19577] <... 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 19577] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19576] <... futex resumed>)        = 0
[pid 19576] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19576] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19577] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19577] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19576] <... futex resumed>)        = 0
[pid 19576] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19576] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19577] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19577] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19576] <... futex resumed>)        = 0
[pid 19576] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19576] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19577] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19577] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19576] <... futex resumed>)        = 0
[pid 19576] exit_group(0)               = ?
[pid 19577] +++ exited with 0 +++
[pid 19576] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19576, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19578 attached
 <unfinished ...>
[pid 19578] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19578
[pid 19578] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19578] setpgid(0, 0)               = 0
[pid 19578] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19578] write(3, "1000", 4)         = 4
[pid 19578] close(3executing program
)                    = 0
[pid 19578] write(1, "executing program\n", 18) = 18
[pid 19578] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19578] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19578] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19578] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19578] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19578] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19578] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19579 attached
 => {parent_tid=[19579]}, 88) = 19579
[pid 19579] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19578] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19578] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19578] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19579] <... set_robust_list resumed>) = 0
[pid 19579] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19579] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19579] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19578] <... futex resumed>)        = 0
[pid 19578] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19578] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19579] <... futex resumed>)        = 1
[pid 19579] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19579] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19578] <... futex resumed>)        = 0
[pid 19578] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19578] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19579] <... futex resumed>)        = 1
[pid 19579] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19579] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19578] <... futex resumed>)        = 0
[pid 19578] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19578] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19579] <... futex resumed>)        = 1
[pid 19579] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19579] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19579] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19578] <... futex resumed>)        = 0
[pid 19578] exit_group(0)               = ?
[pid 19579] <... futex resumed>)        = ?
[pid 19579] +++ exited with 0 +++
[pid 19578] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19578, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19580
./strace-static-x86_64: Process 19580 attached
[pid 19580] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19580] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19580] setpgid(0, 0)               = 0
[pid 19580] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19580] write(3, "1000", 4)         = 4
[pid 19580] close(3)                    = 0
executing program
[pid 19580] write(1, "executing program\n", 18) = 18
[pid 19580] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19580] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19580] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19580] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19580] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19580] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19580] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19581 attached
 => {parent_tid=[19581]}, 88) = 19581
[pid 19581] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19581] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19581] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19580] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19580] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19581] <... futex resumed>)        = 0
[pid 19581] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19580] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19581] <... 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 19581] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19580] <... futex resumed>)        = 0
[pid 19580] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19581] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19580] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19581] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19581] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19581] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19580] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19580] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19581] <... futex resumed>)        = 0
[pid 19581] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19580] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19581] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19580] <... futex resumed>)        = 0
[pid 19581] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19580] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19581] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19580] <... futex resumed>)        = 0
[pid 19581] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19580] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19581] <... futex resumed>)        = 0
[pid 19580] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19581] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19580] exit_group(0 <unfinished ...>
[pid 19581] <... futex resumed>)        = ?
[pid 19580] <... exit_group resumed>)   = ?
[pid 19581] +++ exited with 0 +++
[pid 19580] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19580, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19582
./strace-static-x86_64: Process 19582 attached
[pid 19582] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19582] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19582] setpgid(0, 0)               = 0
[pid 19582] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19582] write(3, "1000", 4)         = 4
[pid 19582] close(3)                    = 0
executing program
[pid 19582] write(1, "executing program\n", 18) = 18
[pid 19582] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19582] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19582] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19582] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19582] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19582] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19582] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19583 attached
 => {parent_tid=[19583]}, 88) = 19583
[pid 19582] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19583] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19582] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19582] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19582] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19583] <... set_robust_list resumed>) = 0
[pid 19583] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19583] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19583] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19582] <... futex resumed>)        = 0
[pid 19582] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19582] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19583] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19583] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19582] <... futex resumed>)        = 0
[pid 19582] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19582] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19583] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19583] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19582] <... futex resumed>)        = 0
[pid 19582] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19582] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19583] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19583] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19582] <... futex resumed>)        = 0
[pid 19582] exit_group(0)               = ?
[pid 19583] +++ exited with 0 +++
[pid 19582] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19582, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19584
./strace-static-x86_64: Process 19584 attached
[pid 19584] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19584] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19584] setpgid(0, 0)               = 0
[pid 19584] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19584] write(3, "1000", 4)         = 4
[pid 19584] close(3)                    = 0
[pid 19584] write(1, "executing program\n", 18executing program
) = 18
[pid 19584] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19584] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19584] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19584] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19584] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19584] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19584] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19585]}, 88) = 19585
./strace-static-x86_64: Process 19585 attached
[pid 19584] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19585] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19585] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19584] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19585] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19584] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19585] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19584] <... futex resumed>)        = 0
[pid 19584] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19585] <... 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 19585] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19584] <... futex resumed>)        = 0
[pid 19584] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19584] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19585] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19585] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19584] <... futex resumed>)        = 0
[pid 19584] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19584] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19585] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19585] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19584] <... futex resumed>)        = 0
[pid 19584] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19584] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19585] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19585] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19584] <... futex resumed>)        = 0
[pid 19584] exit_group(0)               = ?
[pid 19585] +++ exited with 0 +++
[pid 19584] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19584, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19586 attached
 <unfinished ...>
[pid 19586] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19586] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19586] setpgid(0, 0)               = 0
[pid 19586] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19586
[pid 19586] <... openat resumed>)       = 3
[pid 19586] write(3, "1000", 4executing program
)         = 4
[pid 19586] close(3)                    = 0
[pid 19586] write(1, "executing program\n", 18) = 18
[pid 19586] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19586] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19586] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19586] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19586] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19586] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19586] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19587]}, 88) = 19587
./strace-static-x86_64: Process 19587 attached
[pid 19586] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19586] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19586] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19587] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19587] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19587] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19587] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19586] <... futex resumed>)        = 0
[pid 19586] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19586] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19587] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19587] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19586] <... futex resumed>)        = 0
[pid 19586] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19586] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19587] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19587] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19586] <... futex resumed>)        = 0
[pid 19586] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19586] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19587] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19587] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19586] <... futex resumed>)        = 0
[pid 19586] exit_group(0)               = ?
[pid 19587] +++ exited with 0 +++
[pid 19586] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19586, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19588
./strace-static-x86_64: Process 19588 attached
[pid 19588] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19588] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19588] setpgid(0, 0)               = 0
[pid 19588] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19588] write(3, "1000", 4)         = 4
executing program
[pid 19588] close(3)                    = 0
[pid 19588] write(1, "executing program\n", 18) = 18
[pid 19588] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19588] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19588] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19588] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19588] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19588] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19588] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19589 attached
 => {parent_tid=[19589]}, 88) = 19589
[pid 19588] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19588] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19588] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19589] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19589] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19589] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19589] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19588] <... futex resumed>)        = 0
[pid 19588] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19588] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19589] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19589] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19588] <... futex resumed>)        = 0
[pid 19588] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19588] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19589] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19589] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19588] <... futex resumed>)        = 0
[pid 19589] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19588] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19589] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19588] <... futex resumed>)        = 0
[pid 19589] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19588] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19589] <... futex resumed>)        = 0
[pid 19588] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19589] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19588] exit_group(0 <unfinished ...>
[pid 19589] <... futex resumed>)        = ?
[pid 19588] <... exit_group resumed>)   = ?
[pid 19589] +++ exited with 0 +++
[pid 19588] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19588, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19590 attached
, child_tidptr=0x55557c828690) = 19590
[pid 19590] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19590] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19590] setpgid(0, 0)               = 0
[pid 19590] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19590] write(3, "1000", 4)         = 4
executing program
[pid 19590] close(3)                    = 0
[pid 19590] write(1, "executing program\n", 18) = 18
[pid 19590] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19590] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19590] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19590] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19590] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19590] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19590] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19591]}, 88) = 19591
./strace-static-x86_64: Process 19591 attached
[pid 19590] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19590] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19590] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19591] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19591] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19591] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19591] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19590] <... futex resumed>)        = 0
[pid 19590] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19590] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19591] <... futex resumed>)        = 1
[pid 19591] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19591] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19590] <... futex resumed>)        = 0
[pid 19590] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19590] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19591] <... futex resumed>)        = 1
[pid 19591] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19591] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19590] <... futex resumed>)        = 0
[pid 19590] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19590] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19591] <... futex resumed>)        = 1
[pid 19591] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19591] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19590] <... futex resumed>)        = 0
[pid 19590] exit_group(0)               = ?
[pid 19591] <... futex resumed>)        = ?
[pid 19591] +++ exited with 0 +++
[pid 19590] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19590, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19592
./strace-static-x86_64: Process 19592 attached
[pid 19592] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19592] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19592] setpgid(0, 0)               = 0
[pid 19592] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19592] write(3, "1000", 4)         = 4
[pid 19592] close(3)                    = 0
[pid 19592] write(1, "executing program\n", 18executing program
) = 18
[pid 19592] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19592] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19592] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19592] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19592] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19592] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19592] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19593]}, 88) = 19593
[pid 19592] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19592] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19592] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19593 attached
 <unfinished ...>
[pid 19593] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19593] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19593] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19593] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19592] <... futex resumed>)        = 0
[pid 19592] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19592] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19593] <... futex resumed>)        = 1
[pid 19593] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19593] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19592] <... futex resumed>)        = 0
[pid 19592] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19592] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19593] <... futex resumed>)        = 1
[pid 19593] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19593] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19592] <... futex resumed>)        = 0
[pid 19592] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19592] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19593] <... futex resumed>)        = 1
[pid 19593] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19593] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19592] <... futex resumed>)        = 0
[pid 19592] exit_group(0)               = ?
[pid 19593] <... futex resumed>)        = ?
[pid 19593] +++ exited with 0 +++
[pid 19592] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19592, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19594 attached
, child_tidptr=0x55557c828690) = 19594
[pid 19594] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19594] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19594] setpgid(0, 0)               = 0
[pid 19594] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19594] write(3, "1000", 4)         = 4
[pid 19594] close(3)                    = 0
executing program
[pid 19594] write(1, "executing program\n", 18) = 18
[pid 19594] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19594] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19594] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19594] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19594] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19594] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19594] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19595 attached
 => {parent_tid=[19595]}, 88) = 19595
[pid 19594] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19594] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19594] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19595] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19595] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19595] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19595] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19594] <... futex resumed>)        = 0
[pid 19594] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19594] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19595] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19595] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19594] <... futex resumed>)        = 0
[pid 19594] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19594] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19595] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19595] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19594] <... futex resumed>)        = 0
[pid 19594] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19594] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19595] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19595] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19594] <... futex resumed>)        = 0
[pid 19594] exit_group(0)               = ?
[pid 19595] +++ exited with 0 +++
[pid 19594] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19594, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19596 attached
, child_tidptr=0x55557c828690) = 19596
[pid 19596] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19596] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19596] setpgid(0, 0)               = 0
[pid 19596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19596] write(3, "1000", 4)         = 4
[pid 19596] close(3executing program
)                    = 0
[pid 19596] write(1, "executing program\n", 18) = 18
[pid 19596] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19596] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19596] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19596] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19596] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19596] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19596] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19597 attached
 <unfinished ...>
[pid 19597] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19597] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19596] <... clone3 resumed> => {parent_tid=[19597]}, 88) = 19597
[pid 19596] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19596] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19597] <... futex resumed>)        = 0
[pid 19597] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19597] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19596] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19597] <... futex resumed>)        = 0
[pid 19596] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19597] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19596] <... futex resumed>)        = 0
[pid 19597] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19596] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19597] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19597] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19596] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19596] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19597] <... futex resumed>)        = 0
[pid 19596] <... futex resumed>)        = 1
[pid 19597] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19597] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19597] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19596] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19596] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19597] <... futex resumed>)        = 0
[pid 19597] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19596] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19597] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19597] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19597] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19596] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19596] exit_group(0)               = ?
[pid 19597] <... futex resumed>)        = ?
[pid 19597] +++ exited with 0 +++
[pid 19596] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19596, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19598
./strace-static-x86_64: Process 19598 attached
[pid 19598] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19598] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19598] setpgid(0, 0)               = 0
[pid 19598] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19598] write(3, "1000", 4)         = 4
[pid 19598] close(3)                    = 0
[pid 19598] write(1, "executing program\n", 18executing program
) = 18
[pid 19598] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19598] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19598] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19598] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19598] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19598] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19598] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19599 attached
 => {parent_tid=[19599]}, 88) = 19599
[pid 19598] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19598] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19598] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19599] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19599] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19599] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19599] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19598] <... futex resumed>)        = 0
[pid 19598] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19598] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19599] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19599] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19598] <... futex resumed>)        = 0
[pid 19598] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19599] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19598] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19599] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19599] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19598] <... futex resumed>)        = 0
[pid 19598] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19598] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19599] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19599] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19598] <... futex resumed>)        = 0
[pid 19598] exit_group(0)               = ?
[pid 19599] +++ exited with 0 +++
[pid 19598] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19598, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19600
./strace-static-x86_64: Process 19600 attached
[pid 19600] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19600] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19600] setpgid(0, 0)               = 0
[pid 19600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19600] write(3, "1000", 4)         = 4
[pid 19600] close(3executing program
)                    = 0
[pid 19600] write(1, "executing program\n", 18) = 18
[pid 19600] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19600] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19600] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19600] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19600] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19600] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19600] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19601]}, 88) = 19601
[pid 19600] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19600] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19600] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19601 attached
 <unfinished ...>
[pid 19601] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19601] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19601] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19601] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19600] <... futex resumed>)        = 0
[pid 19600] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19600] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19601] <... futex resumed>)        = 1
[pid 19601] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19601] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19600] <... futex resumed>)        = 0
[pid 19600] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19600] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19601] <... futex resumed>)        = 1
[pid 19601] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19601] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19600] <... futex resumed>)        = 0
[pid 19600] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19600] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19601] <... futex resumed>)        = 1
[pid 19601] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19601] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19600] <... futex resumed>)        = 0
[pid 19600] exit_group(0)               = ?
[pid 19601] <... futex resumed>)        = ?
[pid 19601] +++ exited with 0 +++
[pid 19600] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19600, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19602
./strace-static-x86_64: Process 19602 attached
[pid 19602] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19602] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19602] setpgid(0, 0)               = 0
[pid 19602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19602] write(3, "1000", 4)         = 4
[pid 19602] close(3)                    = 0
executing program
[pid 19602] write(1, "executing program\n", 18) = 18
[pid 19602] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19602] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19602] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19602] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19602] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19602] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19602] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19603]}, 88) = 19603
[pid 19602] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19602] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19602] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19603 attached
 <unfinished ...>
[pid 19603] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19603] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19603] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19603] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19602] <... futex resumed>)        = 0
[pid 19602] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19602] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19603] <... futex resumed>)        = 1
[pid 19603] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19603] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19602] <... futex resumed>)        = 0
[pid 19602] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19602] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19603] <... futex resumed>)        = 1
[pid 19603] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19603] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19602] <... futex resumed>)        = 0
[pid 19602] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19602] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19603] <... futex resumed>)        = 1
[pid 19603] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19603] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19602] <... futex resumed>)        = 0
[pid 19602] exit_group(0)               = ?
[pid 19603] <... futex resumed>)        = ?
[pid 19603] +++ exited with 0 +++
[pid 19602] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19602, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19604
./strace-static-x86_64: Process 19604 attached
[pid 19604] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19604] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19604] setpgid(0, 0)               = 0
[pid 19604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19604] write(3, "1000", 4)         = 4
[pid 19604] close(3)                    = 0
executing program
[pid 19604] write(1, "executing program\n", 18) = 18
[pid 19604] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19604] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19604] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19604] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19604] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19604] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19604] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19605]}, 88) = 19605
[pid 19604] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19604] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19604] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19605 attached
 <unfinished ...>
[pid 19605] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19605] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19605] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19605] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19604] <... futex resumed>)        = 0
[pid 19604] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19604] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19605] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19605] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19604] <... futex resumed>)        = 0
[pid 19604] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19604] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19605] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19605] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19604] <... futex resumed>)        = 0
[pid 19604] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19604] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19605] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19605] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19604] <... futex resumed>)        = 0
[pid 19604] exit_group(0)               = ?
[pid 19605] +++ exited with 0 +++
[pid 19604] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19604, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19606
./strace-static-x86_64: Process 19606 attached
[pid 19606] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19606] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19606] setpgid(0, 0)               = 0
[pid 19606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19606] write(3, "1000", 4)         = 4
[pid 19606] close(3)                    = 0
[pid 19606] write(1, "executing program\n", 18executing program
) = 18
[pid 19606] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19606] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19606] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19606] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19606] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19606] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19606] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19607 attached
 => {parent_tid=[19607]}, 88) = 19607
[pid 19606] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19606] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19606] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19607] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19607] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19607] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19607] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19606] <... futex resumed>)        = 0
[pid 19606] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19606] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19607] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19607] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19606] <... futex resumed>)        = 0
[pid 19606] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19606] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19607] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19607] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19606] <... futex resumed>)        = 0
[pid 19606] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19606] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19607] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19607] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19606] <... futex resumed>)        = 0
[pid 19606] exit_group(0)               = ?
[pid 19607] +++ exited with 0 +++
[pid 19606] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19606, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19608
./strace-static-x86_64: Process 19608 attached
[pid 19608] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19608] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19608] setpgid(0, 0)               = 0
[pid 19608] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19608] write(3, "1000", 4)         = 4
[pid 19608] close(3)                    = 0
[pid 19608] write(1, "executing program\n", 18executing program
) = 18
[pid 19608] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19608] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19608] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19608] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19608] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19608] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19608] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19609]}, 88) = 19609
[pid 19608] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19608] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19608] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19609 attached
 <unfinished ...>
[pid 19609] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19609] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19609] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19609] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19608] <... futex resumed>)        = 0
[pid 19608] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19608] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19609] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19609] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19608] <... futex resumed>)        = 0
[pid 19608] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19608] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19609] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19609] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19608] <... futex resumed>)        = 0
[pid 19608] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19608] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19609] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19609] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19608] <... futex resumed>)        = 0
[pid 19608] exit_group(0)               = ?
[pid 19609] +++ exited with 0 +++
[pid 19608] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19608, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19610 attached
 <unfinished ...>
[pid 19610] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19610] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19610] setpgid(0, 0)               = 0
[pid 19610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19610
[pid 19610] <... openat resumed>)       = 3
[pid 19610] write(3, "1000", 4)         = 4
[pid 19610] close(3)                    = 0
executing program
[pid 19610] write(1, "executing program\n", 18) = 18
[pid 19610] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19610] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19610] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19610] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19610] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19610] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19610] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19611]}, 88) = 19611
[pid 19610] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19610] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19610] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19611 attached
 <unfinished ...>
[pid 19611] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19611] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19611] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19611] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19610] <... futex resumed>)        = 0
[pid 19610] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19610] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19611] <... futex resumed>)        = 1
[pid 19611] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19611] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19610] <... futex resumed>)        = 0
[pid 19610] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19610] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19611] <... futex resumed>)        = 1
[pid 19611] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19611] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19610] <... futex resumed>)        = 0
[pid 19610] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19610] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19611] <... futex resumed>)        = 1
[pid 19611] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19611] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19610] <... futex resumed>)        = 0
[pid 19610] exit_group(0)               = ?
[pid 19611] <... futex resumed>)        = ?
[pid 19611] +++ exited with 0 +++
[pid 19610] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19610, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19612
./strace-static-x86_64: Process 19612 attached
[pid 19612] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19612] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19612] setpgid(0, 0)               = 0
[pid 19612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19612] write(3, "1000", 4)         = 4
[pid 19612] close(3executing program
)                    = 0
[pid 19612] write(1, "executing program\n", 18) = 18
[pid 19612] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19612] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19612] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19612] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19612] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19612] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19612] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19613]}, 88) = 19613
[pid 19612] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19612] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19612] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19613 attached
 <unfinished ...>
[pid 19613] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19613] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19613] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19613] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19612] <... futex resumed>)        = 0
[pid 19612] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19612] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19613] <... futex resumed>)        = 1
[pid 19613] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19613] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19612] <... futex resumed>)        = 0
[pid 19612] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19612] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19613] <... futex resumed>)        = 1
[pid 19613] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19613] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19612] <... futex resumed>)        = 0
[pid 19612] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19612] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19613] <... futex resumed>)        = 1
[pid 19613] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19613] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19612] <... futex resumed>)        = 0
[pid 19613] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19612] exit_group(0)               = ?
[pid 19613] <... futex resumed>)        = ?
[pid 19613] +++ exited with 0 +++
[pid 19612] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19612, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19614
./strace-static-x86_64: Process 19614 attached
[pid 19614] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19614] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19614] setpgid(0, 0)               = 0
[pid 19614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19614] write(3, "1000", 4)         = 4
executing program
[pid 19614] close(3)                    = 0
[pid 19614] write(1, "executing program\n", 18) = 18
[pid 19614] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19614] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19614] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19614] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19614] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19614] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19614] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19615]}, 88) = 19615
[pid 19614] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19614] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19614] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19615 attached
 <unfinished ...>
[pid 19615] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19615] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19615] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19615] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19614] <... futex resumed>)        = 0
[pid 19614] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19614] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19615] <... futex resumed>)        = 1
[pid 19615] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19615] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19614] <... futex resumed>)        = 0
[pid 19614] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19614] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19615] <... futex resumed>)        = 1
[pid 19615] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19615] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19614] <... futex resumed>)        = 0
[pid 19614] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19614] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19615] <... futex resumed>)        = 1
[pid 19615] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19615] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19614] <... futex resumed>)        = 0
[pid 19614] exit_group(0)               = ?
[pid 19615] <... futex resumed>)        = ?
[pid 19615] +++ exited with 0 +++
[pid 19614] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19614, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19616 attached
, child_tidptr=0x55557c828690) = 19616
[pid 19616] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19616] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19616] setpgid(0, 0)               = 0
[pid 19616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19616] write(3, "1000", 4)         = 4
[pid 19616] close(3executing program
)                    = 0
[pid 19616] write(1, "executing program\n", 18) = 18
[pid 19616] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19616] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19616] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19616] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19616] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19616] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19616] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19617 attached
 => {parent_tid=[19617]}, 88) = 19617
[pid 19616] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19616] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19616] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19617] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19617] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19617] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19617] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19616] <... futex resumed>)        = 0
[pid 19616] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19616] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19617] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19617] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19616] <... futex resumed>)        = 0
[pid 19616] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19616] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19617] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19617] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19616] <... futex resumed>)        = 0
[pid 19616] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19616] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19617] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19617] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19616] <... futex resumed>)        = 0
[pid 19616] exit_group(0)               = ?
[pid 19617] +++ exited with 0 +++
[pid 19616] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19616, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19618
./strace-static-x86_64: Process 19618 attached
[pid 19618] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19618] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19618] setpgid(0, 0)               = 0
[pid 19618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19618] write(3, "1000", 4)         = 4
[pid 19618] close(3)                    = 0
[pid 19618] write(1, "executing program\n", 18executing program
) = 18
[pid 19618] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19618] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19618] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19618] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19618] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19618] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19618] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19619 attached
 => {parent_tid=[19619]}, 88) = 19619
[pid 19619] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19618] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19618] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19618] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19619] <... set_robust_list resumed>) = 0
[pid 19619] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19619] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19619] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19619] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19618] <... futex resumed>)        = 0
[pid 19618] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19618] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19619] <... futex resumed>)        = 0
[pid 19619] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19619] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19618] <... futex resumed>)        = 0
[pid 19618] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19618] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19619] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19619] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19618] <... futex resumed>)        = 0
[pid 19618] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19618] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19619] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19619] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19618] <... futex resumed>)        = 0
[pid 19618] exit_group(0)               = ?
[pid 19619] +++ exited with 0 +++
[pid 19618] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19618, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19620 attached
 <unfinished ...>
[pid 19620] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19620
[pid 19620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19620] setpgid(0, 0)               = 0
[pid 19620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19620] write(3, "1000", 4)         = 4
[pid 19620] close(3executing program
)                    = 0
[pid 19620] write(1, "executing program\n", 18) = 18
[pid 19620] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19620] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19620] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19620] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19620] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19620] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19620] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19621]}, 88) = 19621
./strace-static-x86_64: Process 19621 attached
[pid 19620] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19620] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19620] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19621] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19621] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19621] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19621] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19620] <... futex resumed>)        = 0
[pid 19620] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19620] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19621] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19621] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19620] <... futex resumed>)        = 0
[pid 19620] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19620] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19621] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19621] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19620] <... futex resumed>)        = 0
[pid 19620] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19620] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19621] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19621] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19620] <... futex resumed>)        = 0
[pid 19620] exit_group(0)               = ?
[pid 19621] +++ exited with 0 +++
[pid 19620] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19620, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19622
./strace-static-x86_64: Process 19622 attached
[pid 19622] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19622] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19622] setpgid(0, 0)               = 0
[pid 19622] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19622] write(3, "1000", 4)         = 4
executing program
[pid 19622] close(3)                    = 0
[pid 19622] write(1, "executing program\n", 18) = 18
[pid 19622] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19622] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19622] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19622] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19622] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19622] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19622] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19623 attached
 => {parent_tid=[19623]}, 88) = 19623
[pid 19623] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19622] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19623] <... set_robust_list resumed>) = 0
[pid 19622] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19623] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19622] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19623] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19622] <... futex resumed>)        = 0
[pid 19623] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19622] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19623] <... 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 19623] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19622] <... futex resumed>)        = 0
[pid 19623] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19622] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19623] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19622] <... futex resumed>)        = 0
[pid 19623] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19622] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19623] <... futex resumed>)        = 0
[pid 19622] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19623] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19622] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19623] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19622] <... futex resumed>)        = 0
[pid 19623] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19622] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19623] <... futex resumed>)        = 0
[pid 19622] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19623] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19622] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19622] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19623] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19623] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19622] <... futex resumed>)        = 0
[pid 19623] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19622] exit_group(0 <unfinished ...>
[pid 19623] <... futex resumed>)        = ?
[pid 19622] <... exit_group resumed>)   = ?
[pid 19623] +++ exited with 0 +++
[pid 19622] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19622, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19624
./strace-static-x86_64: Process 19624 attached
[pid 19624] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19624] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19624] setpgid(0, 0)               = 0
[pid 19624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19624] write(3, "1000", 4)         = 4
[pid 19624] close(3)                    = 0
[pid 19624] write(1, "executing program\n", 18executing program
) = 18
[pid 19624] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19624] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19624] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19624] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19624] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19624] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19624] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19625 attached
 => {parent_tid=[19625]}, 88) = 19625
[pid 19624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19624] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19624] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19625] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19625] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19625] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19625] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19624] <... futex resumed>)        = 0
[pid 19624] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19624] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19625] <... futex resumed>)        = 1
[pid 19625] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19625] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19624] <... futex resumed>)        = 0
[pid 19624] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19624] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19625] <... futex resumed>)        = 1
[pid 19625] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19625] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19624] <... futex resumed>)        = 0
[pid 19624] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19624] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19625] <... futex resumed>)        = 1
[pid 19625] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19625] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19624] <... futex resumed>)        = 0
[pid 19624] exit_group(0)               = ?
[pid 19625] <... futex resumed>)        = ?
[pid 19625] +++ exited with 0 +++
[pid 19624] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19624, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19626 attached
 <unfinished ...>
[pid 19626] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19626] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19626
[pid 19626] <... prctl resumed>)        = 0
[pid 19626] setpgid(0, 0)               = 0
[pid 19626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19626] write(3, "1000", 4)         = 4
[pid 19626] close(3)                    = 0
[pid 19626] write(1, "executing program\n", 18executing program
) = 18
[pid 19626] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19626] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19626] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19626] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19626] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19626] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19626] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19627]}, 88) = 19627
[pid 19626] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19626] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19626] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19627 attached
 <unfinished ...>
[pid 19627] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19627] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19627] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19627] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19626] <... futex resumed>)        = 0
[pid 19626] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19626] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19627] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19627] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19626] <... futex resumed>)        = 0
[pid 19626] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19626] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19627] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19627] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19626] <... futex resumed>)        = 0
[pid 19626] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19626] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19627] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19627] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19626] <... futex resumed>)        = 0
[pid 19626] exit_group(0)               = ?
[pid 19627] +++ exited with 0 +++
[pid 19626] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19626, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19628 attached
 <unfinished ...>
[pid 19628] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19628
[pid 19628] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19628] setpgid(0, 0)               = 0
[pid 19628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19628] write(3, "1000", 4)         = 4
[pid 19628] close(3)                    = 0
executing program
[pid 19628] write(1, "executing program\n", 18) = 18
[pid 19628] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19628] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19628] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19628] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19628] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19628] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19628] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19629 attached
 => {parent_tid=[19629]}, 88) = 19629
[pid 19628] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19628] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19628] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19629] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19629] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19629] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19629] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19628] <... futex resumed>)        = 0
[pid 19628] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19628] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19629] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19629] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19628] <... futex resumed>)        = 0
[pid 19628] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19628] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19629] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19629] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19628] <... futex resumed>)        = 0
[pid 19628] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19628] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19629] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19629] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19628] <... futex resumed>)        = 0
[pid 19628] exit_group(0)               = ?
[pid 19629] +++ exited with 0 +++
[pid 19628] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19628, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19630
./strace-static-x86_64: Process 19630 attached
[pid 19630] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19630] setpgid(0, 0)               = 0
[pid 19630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19630] write(3, "1000", 4)         = 4
[pid 19630] close(3)                    = 0
[pid 19630] write(1, "executing program\n", 18executing program
) = 18
[pid 19630] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19630] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19630] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19630] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19630] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19630] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19630] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19631 attached
 => {parent_tid=[19631]}, 88) = 19631
[pid 19630] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19630] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19630] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19631] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19631] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19631] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19631] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19631] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19630] <... futex resumed>)        = 0
[pid 19630] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19631] <... futex resumed>)        = 0
[pid 19631] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19631] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19631] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19630] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19630] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19631] <... futex resumed>)        = 0
[pid 19631] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19630] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19631] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19630] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19631] <... futex resumed>)        = 0
[pid 19630] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19631] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19630] <... futex resumed>)        = 0
[pid 19630] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19631] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19631] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19630] <... futex resumed>)        = 0
[pid 19630] exit_group(0)               = ?
[pid 19631] +++ exited with 0 +++
[pid 19630] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19630, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19632
./strace-static-x86_64: Process 19632 attached
[pid 19632] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19632] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19632] setpgid(0, 0)               = 0
[pid 19632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19632] write(3, "1000", 4)         = 4
[pid 19632] close(3executing program
)                    = 0
[pid 19632] write(1, "executing program\n", 18) = 18
[pid 19632] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19632] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19632] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19632] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19632] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19632] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19632] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19633]}, 88) = 19633
[pid 19632] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19632] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19632] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19633 attached
 <unfinished ...>
[pid 19633] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19633] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19633] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19633] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19632] <... futex resumed>)        = 0
[pid 19632] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19632] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19633] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19633] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19632] <... futex resumed>)        = 0
[pid 19632] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19632] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19633] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19633] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19632] <... futex resumed>)        = 0
[pid 19632] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19632] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19633] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19633] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19632] <... futex resumed>)        = 0
[pid 19632] exit_group(0)               = ?
[pid 19633] +++ exited with 0 +++
[pid 19632] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19632, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19634
./strace-static-x86_64: Process 19634 attached
[pid 19634] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19634] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19634] setpgid(0, 0)               = 0
[pid 19634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19634] write(3, "1000", 4)         = 4
executing program
[pid 19634] close(3)                    = 0
[pid 19634] write(1, "executing program\n", 18) = 18
[pid 19634] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19634] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19634] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19634] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19634] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19634] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19635]}, 88) = 19635
[pid 19634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19634] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19634] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19635 attached
 <unfinished ...>
[pid 19635] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19635] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19635] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19635] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19634] <... futex resumed>)        = 0
[pid 19634] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19634] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19635] <... futex resumed>)        = 1
[pid 19635] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19635] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19634] <... futex resumed>)        = 0
[pid 19634] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19634] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19635] <... futex resumed>)        = 1
[pid 19635] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19635] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19634] <... futex resumed>)        = 0
[pid 19634] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19634] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19635] <... futex resumed>)        = 1
[pid 19635] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19635] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19634] <... futex resumed>)        = 0
[pid 19634] exit_group(0)               = ?
[pid 19635] <... futex resumed>)        = ?
[pid 19635] +++ exited with 0 +++
[pid 19634] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19634, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19636
./strace-static-x86_64: Process 19636 attached
[pid 19636] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19636] setpgid(0, 0)               = 0
[pid 19636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19636] write(3, "1000", 4)         = 4
[pid 19636] close(3)                    = 0
[pid 19636] write(1, "executing program\n", 18executing program
) = 18
[pid 19636] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19636] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19636] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19636] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19636] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19636] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19637 attached
 => {parent_tid=[19637]}, 88) = 19637
[pid 19636] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19636] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19636] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19637] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19637] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19637] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19636] <... futex resumed>)        = 0
[pid 19636] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19636] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19637] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19637] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19636] <... futex resumed>)        = 0
[pid 19636] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19636] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19637] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19637] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19636] <... futex resumed>)        = 0
[pid 19636] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19636] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19637] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19637] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19637] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19636] <... futex resumed>)        = 0
[pid 19636] exit_group(0)               = ?
[pid 19637] <... futex resumed>)        = ?
[pid 19637] +++ exited with 0 +++
[pid 19636] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19636, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19638
./strace-static-x86_64: Process 19638 attached
[pid 19638] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19638] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19638] setpgid(0, 0)               = 0
[pid 19638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19638] write(3, "1000", 4)         = 4
[pid 19638] close(3)                    = 0
executing program
[pid 19638] write(1, "executing program\n", 18) = 18
[pid 19638] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19638] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19638] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19638] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19638] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19638] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19639]}, 88) = 19639
[pid 19638] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19638] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19638] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19639 attached
 <unfinished ...>
[pid 19639] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19639] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19639] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19639] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19638] <... futex resumed>)        = 0
[pid 19638] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19638] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19639] <... futex resumed>)        = 1
[pid 19639] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19639] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19638] <... futex resumed>)        = 0
[pid 19638] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19638] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19639] <... futex resumed>)        = 1
[pid 19639] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19639] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19638] <... futex resumed>)        = 0
[pid 19638] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19638] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19639] <... futex resumed>)        = 1
[pid 19639] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19639] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19638] <... futex resumed>)        = 0
[pid 19638] exit_group(0)               = ?
[pid 19639] <... futex resumed>)        = ?
[pid 19639] +++ exited with 0 +++
[pid 19638] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19638, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19640
./strace-static-x86_64: Process 19640 attached
[pid 19640] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19640] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19640] setpgid(0, 0)               = 0
[pid 19640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19640] write(3, "1000", 4)         = 4
[pid 19640] close(3)                    = 0
[pid 19640] write(1, "executing program\n", 18executing program
) = 18
[pid 19640] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19640] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19640] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19640] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19640] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19640] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19641 attached
 => {parent_tid=[19641]}, 88) = 19641
[pid 19640] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19640] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19640] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19641] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19641] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19641] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19641] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19640] <... futex resumed>)        = 0
[pid 19640] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19640] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19641] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19641] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19640] <... futex resumed>)        = 0
[pid 19640] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19640] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19641] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19641] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19640] <... futex resumed>)        = 0
[pid 19640] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19640] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19641] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19641] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19640] <... futex resumed>)        = 0
[pid 19640] exit_group(0)               = ?
[pid 19641] +++ exited with 0 +++
[pid 19640] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19640, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19642
./strace-static-x86_64: Process 19642 attached
[pid 19642] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19642] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19642] setpgid(0, 0)               = 0
[pid 19642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19642] write(3, "1000", 4)         = 4
[pid 19642] close(3)                    = 0
[pid 19642] write(1, "executing program\n", 18executing program
) = 18
[pid 19642] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19642] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19642] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19642] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19642] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19642] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19642] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19643]}, 88) = 19643
[pid 19642] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19642] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19642] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19643 attached
 <unfinished ...>
[pid 19643] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19643] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19643] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19643] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19642] <... futex resumed>)        = 0
[pid 19642] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19642] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19643] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19643] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19642] <... futex resumed>)        = 0
[pid 19642] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19642] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19643] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19643] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19642] <... futex resumed>)        = 0
[pid 19642] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19642] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19643] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19643] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19642] <... futex resumed>)        = 0
[pid 19642] exit_group(0)               = ?
[pid 19643] +++ exited with 0 +++
[pid 19642] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19642, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19644 attached
 <unfinished ...>
[pid 19644] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19644
[pid 19644] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19644] setpgid(0, 0)               = 0
[pid 19644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19644] write(3, "1000", 4)         = 4
[pid 19644] close(3)                    = 0
[pid 19644] write(1, "executing program\n", 18executing program
) = 18
[pid 19644] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19644] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19644] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19644] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19644] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19644] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19644] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19645 attached
 => {parent_tid=[19645]}, 88) = 19645
[pid 19644] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19644] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19644] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19645] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19645] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19645] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19645] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19644] <... futex resumed>)        = 0
[pid 19644] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19644] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19645] <... futex resumed>)        = 1
[pid 19645] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19645] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19644] <... futex resumed>)        = 0
[pid 19644] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19644] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19645] <... futex resumed>)        = 1
[pid 19645] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19645] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19644] <... futex resumed>)        = 0
[pid 19644] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19644] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19645] <... futex resumed>)        = 1
[pid 19645] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19645] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19645] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19644] <... futex resumed>)        = 0
[pid 19644] exit_group(0)               = ?
[pid 19645] <... futex resumed>)        = ?
[pid 19645] +++ exited with 0 +++
[pid 19644] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19644, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19646 attached
 <unfinished ...>
[pid 19646] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19646
[pid 19646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19646] setpgid(0, 0)               = 0
[pid 19646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19646] write(3, "1000", 4)         = 4
[pid 19646] close(3executing program
)                    = 0
[pid 19646] write(1, "executing program\n", 18) = 18
[pid 19646] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19646] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19646] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19646] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19646] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19646] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19646] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19647]}, 88) = 19647
[pid 19646] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19646] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19646] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19647 attached
 <unfinished ...>
[pid 19647] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19647] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19647] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19647] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19646] <... futex resumed>)        = 0
[pid 19646] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19646] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19647] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19647] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19646] <... futex resumed>)        = 0
[pid 19646] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19646] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19647] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19647] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19646] <... futex resumed>)        = 0
[pid 19646] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19646] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19647] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19647] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19646] <... futex resumed>)        = 0
[pid 19646] exit_group(0)               = ?
[pid 19647] +++ exited with 0 +++
[pid 19646] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19646, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19648 attached
, child_tidptr=0x55557c828690) = 19648
[pid 19648] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19648] setpgid(0, 0)               = 0
[pid 19648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19648] write(3, "1000", 4)         = 4
[pid 19648] close(3)                    = 0
[pid 19648] write(1, "executing program\n", 18executing program
) = 18
[pid 19648] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19648] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19648] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19648] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19648] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19648] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19648] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19649 attached
 => {parent_tid=[19649]}, 88) = 19649
[pid 19648] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19648] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19648] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19649] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19649] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19649] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19649] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19648] <... futex resumed>)        = 0
[pid 19649] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19648] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19648] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19649] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19649] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19649] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19648] <... futex resumed>)        = 0
[pid 19648] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19648] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19649] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19649] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19648] <... futex resumed>)        = 0
[pid 19648] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19648] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19649] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19649] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19648] <... futex resumed>)        = 0
[pid 19648] exit_group(0)               = ?
[pid 19649] +++ exited with 0 +++
[pid 19648] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19648, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19650 attached
, child_tidptr=0x55557c828690) = 19650
[pid 19650] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19650] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19650] setpgid(0, 0)               = 0
[pid 19650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19650] write(3, "1000", 4executing program
)         = 4
[pid 19650] close(3)                    = 0
[pid 19650] write(1, "executing program\n", 18) = 18
[pid 19650] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19650] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19650] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19650] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19650] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19650] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19650] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19651]}, 88) = 19651
./strace-static-x86_64: Process 19651 attached
[pid 19650] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19650] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19650] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19651] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19651] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19651] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19651] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19650] <... futex resumed>)        = 0
[pid 19650] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19650] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19651] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19651] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19650] <... futex resumed>)        = 0
[pid 19650] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19650] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19651] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19651] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19650] <... futex resumed>)        = 0
[pid 19650] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19650] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19651] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19651] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19650] <... futex resumed>)        = 0
[pid 19650] exit_group(0)               = ?
[pid 19651] +++ exited with 0 +++
[pid 19650] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19650, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19652
./strace-static-x86_64: Process 19652 attached
[pid 19652] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19652] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19652] setpgid(0, 0)               = 0
[pid 19652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19652] write(3, "1000", 4)         = 4
[pid 19652] close(3executing program
)                    = 0
[pid 19652] write(1, "executing program\n", 18) = 18
[pid 19652] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19652] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19652] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19652] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19652] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19652] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19652] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19653]}, 88) = 19653
./strace-static-x86_64: Process 19653 attached
[pid 19652] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19653] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19653] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19653] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19652] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19652] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19653] <... futex resumed>)        = 0
[pid 19652] <... futex resumed>)        = 1
[pid 19653] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19652] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19653] <... 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 19653] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19653] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19652] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19652] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19653] <... futex resumed>)        = 0
[pid 19652] <... futex resumed>)        = 1
[pid 19653] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19652] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19653] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19653] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19652] <... futex resumed>)        = 0
[pid 19653] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19652] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19653] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19652] <... futex resumed>)        = 0
[pid 19653] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19652] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19653] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19653] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19653] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19652] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19652] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19653] <... futex resumed>)        = 0
[pid 19652] <... futex resumed>)        = 1
[pid 19653] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19652] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19653] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19653] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19652] <... futex resumed>)        = 0
[pid 19653] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19652] exit_group(0 <unfinished ...>
[pid 19653] <... futex resumed>)        = ?
[pid 19652] <... exit_group resumed>)   = ?
[pid 19653] +++ exited with 0 +++
[pid 19652] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19652, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19654
./strace-static-x86_64: Process 19654 attached
[pid 19654] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19654] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19654] setpgid(0, 0)               = 0
[pid 19654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19654] write(3, "1000", 4)         = 4
[pid 19654] close(3executing program
)                    = 0
[pid 19654] write(1, "executing program\n", 18) = 18
[pid 19654] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19654] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19654] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19654] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19654] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19654] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19654] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19655 attached
 => {parent_tid=[19655]}, 88) = 19655
[pid 19655] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19654] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19655] <... set_robust_list resumed>) = 0
[pid 19654] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19655] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19654] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19655] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19654] <... futex resumed>)        = 0
[pid 19655] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19654] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19655] <... 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 19655] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19654] <... futex resumed>)        = 0
[pid 19655] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19654] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19655] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19654] <... futex resumed>)        = 0
[pid 19655] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19654] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19655] <... futex resumed>)        = 0
[pid 19654] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19655] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19654] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19655] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19654] <... futex resumed>)        = 0
[pid 19655] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19654] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19655] <... futex resumed>)        = 0
[pid 19654] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19655] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19654] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19655] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19654] <... futex resumed>)        = 0
[pid 19655] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19654] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19655] <... futex resumed>)        = 0
[pid 19654] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19655] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19654] exit_group(0 <unfinished ...>
[pid 19655] <... futex resumed>)        = ?
[pid 19654] <... exit_group resumed>)   = ?
[pid 19655] +++ exited with 0 +++
[pid 19654] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19654, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19656
./strace-static-x86_64: Process 19656 attached
[pid 19656] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19656] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19656] setpgid(0, 0)               = 0
[pid 19656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19656] write(3, "1000", 4)         = 4
[pid 19656] close(3executing program
)                    = 0
[pid 19656] write(1, "executing program\n", 18) = 18
[pid 19656] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19656] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19656] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19656] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19656] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19656] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19656] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19657]}, 88) = 19657
[pid 19656] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19656] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19656] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19657 attached
 <unfinished ...>
[pid 19657] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19657] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19657] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19657] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19656] <... futex resumed>)        = 0
[pid 19657] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19656] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19657] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19656] <... futex resumed>)        = 0
[pid 19657] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19656] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19657] <... futex resumed>)        = 0
[pid 19656] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19657] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19656] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19657] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19656] <... futex resumed>)        = 0
[pid 19657] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19656] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19657] <... futex resumed>)        = 0
[pid 19656] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19657] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19656] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19656] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19657] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19657] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19656] <... futex resumed>)        = 0
[pid 19657] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19656] exit_group(0 <unfinished ...>
[pid 19657] <... futex resumed>)        = ?
[pid 19656] <... exit_group resumed>)   = ?
[pid 19657] +++ exited with 0 +++
[pid 19656] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19656, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19658 attached
, child_tidptr=0x55557c828690) = 19658
[pid 19658] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19658] setpgid(0, 0)               = 0
[pid 19658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19658] write(3, "1000", 4)         = 4
[pid 19658] close(3)                    = 0
executing program
[pid 19658] write(1, "executing program\n", 18) = 18
[pid 19658] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19658] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19658] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19658] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19658] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19658] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19658] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19659 attached
 <unfinished ...>
[pid 19659] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19659] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19658] <... clone3 resumed> => {parent_tid=[19659]}, 88) = 19659
[pid 19659] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19659] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19658] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19658] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19659] <... futex resumed>)        = 0
[pid 19659] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19658] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19659] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19659] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19658] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19658] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19659] <... futex resumed>)        = 0
[pid 19659] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19658] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19659] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19658] <... futex resumed>)        = 0
[pid 19659] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19658] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19659] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19658] <... futex resumed>)        = 0
[pid 19658] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19659] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19659] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19658] <... futex resumed>)        = 0
[pid 19658] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19658] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19659] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19659] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19658] <... futex resumed>)        = 0
[pid 19658] exit_group(0)               = ?
[pid 19659] +++ exited with 0 +++
[pid 19658] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19658, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19660
./strace-static-x86_64: Process 19660 attached
[pid 19660] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19660] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19660] setpgid(0, 0)               = 0
[pid 19660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19660] write(3, "1000", 4)         = 4
[pid 19660] close(3)                    = 0
[pid 19660] write(1, "executing program\n", 18executing program
) = 18
[pid 19660] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19660] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19660] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19660] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19660] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19660] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19660] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19661 attached
 => {parent_tid=[19661]}, 88) = 19661
[pid 19661] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19660] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19661] <... set_robust_list resumed>) = 0
[pid 19661] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19660] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19661] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19660] <... futex resumed>)        = 0
[pid 19661] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19661] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19661] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19660] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19660] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19661] <... futex resumed>)        = 0
[pid 19661] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19660] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19661] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19661] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19660] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19660] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19661] <... futex resumed>)        = 0
[pid 19661] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19660] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19661] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19660] <... futex resumed>)        = 0
[pid 19660] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19660] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19661] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19661] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19660] <... futex resumed>)        = 0
[pid 19660] exit_group(0)               = ?
[pid 19661] +++ exited with 0 +++
[pid 19660] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19660, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19662
./strace-static-x86_64: Process 19662 attached
[pid 19662] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19662] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19662] setpgid(0, 0)               = 0
[pid 19662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19662] write(3, "1000", 4)         = 4
[pid 19662] close(3)                    = 0
[pid 19662] write(1, "executing program\n", 18executing program
) = 18
[pid 19662] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19662] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19662] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19662] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19662] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19662] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19662] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19663 attached
 => {parent_tid=[19663]}, 88) = 19663
[pid 19663] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19662] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19663] <... set_robust_list resumed>) = 0
[pid 19663] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19662] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19663] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19662] <... futex resumed>)        = 0
[pid 19663] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19662] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19663] <... 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 19663] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19662] <... futex resumed>)        = 0
[pid 19662] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19662] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19663] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19663] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19662] <... futex resumed>)        = 0
[pid 19662] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19662] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19663] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19663] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19662] <... futex resumed>)        = 0
[pid 19662] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19662] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19663] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19663] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19663] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19662] <... futex resumed>)        = 0
[pid 19662] exit_group(0)               = ?
[pid 19663] <... futex resumed>)        = ?
[pid 19663] +++ exited with 0 +++
[pid 19662] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19662, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19664
./strace-static-x86_64: Process 19664 attached
[pid 19664] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19664] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19664] setpgid(0, 0)               = 0
[pid 19664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19664] write(3, "1000", 4)         = 4
[pid 19664] close(3executing program
)                    = 0
[pid 19664] write(1, "executing program\n", 18) = 18
[pid 19664] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19664] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19664] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19664] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19664] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19664] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19664] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19665 attached
 => {parent_tid=[19665]}, 88) = 19665
[pid 19664] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19665] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19665] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19665] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19664] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19664] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19665] <... futex resumed>)        = 0
[pid 19664] <... futex resumed>)        = 1
[pid 19665] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19664] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19665] <... 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 19665] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19664] <... futex resumed>)        = 0
[pid 19665] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19664] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19665] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19664] <... futex resumed>)        = 0
[pid 19665] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19664] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19665] <... futex resumed>)        = 0
[pid 19664] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19665] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19664] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19665] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19664] <... futex resumed>)        = 0
[pid 19665] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19664] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19665] <... futex resumed>)        = 0
[pid 19664] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19665] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19664] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19665] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19664] <... futex resumed>)        = 0
[pid 19665] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19664] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19665] <... futex resumed>)        = 0
[pid 19664] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19665] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19664] exit_group(0)               = ?
[pid 19665] <... futex resumed>)        = ?
[pid 19665] +++ exited with 0 +++
[pid 19664] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19664, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19666 attached
, child_tidptr=0x55557c828690) = 19666
[pid 19666] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19666] setpgid(0, 0)               = 0
[pid 19666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19666] write(3, "1000", 4)         = 4
[pid 19666] close(3executing program
)                    = 0
[pid 19666] write(1, "executing program\n", 18) = 18
[pid 19666] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19666] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19666] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19666] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19666] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19666] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19666] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19667 attached
 <unfinished ...>
[pid 19667] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19666] <... clone3 resumed> => {parent_tid=[19667]}, 88) = 19667
[pid 19667] <... set_robust_list resumed>) = 0
[pid 19667] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19667] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19666] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19666] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19667] <... futex resumed>)        = 0
[pid 19666] <... futex resumed>)        = 1
[pid 19667] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19666] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19667] <... 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 19667] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19667] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19666] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19666] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19667] <... futex resumed>)        = 0
[pid 19666] <... futex resumed>)        = 1
[pid 19667] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19666] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19667] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19667] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19666] <... futex resumed>)        = 0
[pid 19667] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19666] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19667] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19666] <... futex resumed>)        = 0
[pid 19667] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19666] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19667] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19667] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19666] <... futex resumed>)        = 0
[pid 19667] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19666] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19667] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19666] <... futex resumed>)        = 0
[pid 19667] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19666] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19667] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19667] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19666] <... futex resumed>)        = 0
[pid 19667] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19666] exit_group(0 <unfinished ...>
[pid 19667] <... futex resumed>)        = ?
[pid 19666] <... exit_group resumed>)   = ?
[pid 19667] +++ exited with 0 +++
[pid 19666] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19666, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19668
./strace-static-x86_64: Process 19668 attached
[pid 19668] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19668] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19668] setpgid(0, 0)               = 0
[pid 19668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19668] write(3, "1000", 4)         = 4
[pid 19668] close(3executing program
)                    = 0
[pid 19668] write(1, "executing program\n", 18) = 18
[pid 19668] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19668] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19668] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19668] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19668] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19668] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19668] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19669]}, 88) = 19669
[pid 19668] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19668] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19668] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19669 attached
 <unfinished ...>
[pid 19669] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19669] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19669] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19669] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19668] <... futex resumed>)        = 0
[pid 19668] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19668] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19669] <... futex resumed>)        = 1
[pid 19669] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19669] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19668] <... futex resumed>)        = 0
[pid 19668] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19668] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19669] <... futex resumed>)        = 1
[pid 19669] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19669] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19668] <... futex resumed>)        = 0
[pid 19668] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19668] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19669] <... futex resumed>)        = 1
[pid 19669] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19669] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19668] <... futex resumed>)        = 0
[pid 19668] exit_group(0)               = ?
[pid 19669] <... futex resumed>)        = ?
[pid 19669] +++ exited with 0 +++
[pid 19668] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19668, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19670
./strace-static-x86_64: Process 19670 attached
[pid 19670] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19670] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19670] setpgid(0, 0)               = 0
[pid 19670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19670] write(3, "1000", 4)         = 4
[pid 19670] close(3)                    = 0
executing program
[pid 19670] write(1, "executing program\n", 18) = 18
[pid 19670] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19670] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19670] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19670] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19670] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19670] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19670] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19671]}, 88) = 19671
[pid 19670] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19670] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19670] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19671 attached
 <unfinished ...>
[pid 19671] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19671] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19671] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19671] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19670] <... futex resumed>)        = 0
[pid 19670] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19670] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19671] <... futex resumed>)        = 1
[pid 19671] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19671] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19670] <... futex resumed>)        = 0
[pid 19670] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19670] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19671] <... futex resumed>)        = 1
[pid 19671] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19671] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19670] <... futex resumed>)        = 0
[pid 19670] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19670] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19671] <... futex resumed>)        = 1
[pid 19671] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19671] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19670] <... futex resumed>)        = 0
[pid 19670] exit_group(0)               = ?
[pid 19671] <... futex resumed>)        = ?
[pid 19671] +++ exited with 0 +++
[pid 19670] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19670, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19672
./strace-static-x86_64: Process 19672 attached
[pid 19672] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19672] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19672] setpgid(0, 0)               = 0
[pid 19672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19672] write(3, "1000", 4)         = 4
executing program
[pid 19672] close(3)                    = 0
[pid 19672] write(1, "executing program\n", 18) = 18
[pid 19672] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19672] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19672] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19672] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19672] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19672] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19672] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19673 attached
 => {parent_tid=[19673]}, 88) = 19673
[pid 19672] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19672] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19672] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19673] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19673] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19673] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19673] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19672] <... futex resumed>)        = 0
[pid 19672] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19672] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19673] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19673] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19672] <... futex resumed>)        = 0
[pid 19672] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19672] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19673] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19673] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19672] <... futex resumed>)        = 0
[pid 19672] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19672] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19673] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19673] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19672] <... futex resumed>)        = 0
[pid 19672] exit_group(0)               = ?
[pid 19673] +++ exited with 0 +++
[pid 19672] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19672, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19674
./strace-static-x86_64: Process 19674 attached
[pid 19674] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19674] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19674] setpgid(0, 0)               = 0
[pid 19674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19674] write(3, "1000", 4)         = 4
[pid 19674] close(3)                    = 0
[pid 19674] write(1, "executing program\n", 18) = 18
executing program
[pid 19674] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19674] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19674] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19674] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19674] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19674] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19674] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19675 attached
 => {parent_tid=[19675]}, 88) = 19675
[pid 19675] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19674] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19675] <... set_robust_list resumed>) = 0
[pid 19674] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19675] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19674] <... futex resumed>)        = 0
[pid 19675] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19675] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19674] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19675] <... 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 19675] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19675] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19674] <... futex resumed>)        = 0
[pid 19674] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19675] <... futex resumed>)        = 0
[pid 19675] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19674] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19675] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19674] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19674] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19674] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19675] <... futex resumed>)        = 1
[pid 19674] <... futex resumed>)        = 0
[pid 19675] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19674] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19675] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19675] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19674] <... futex resumed>)        = 0
[pid 19674] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19674] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19675] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19675] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19674] <... futex resumed>)        = 0
[pid 19674] exit_group(0)               = ?
[pid 19675] +++ exited with 0 +++
[pid 19674] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19674, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19676 attached
 <unfinished ...>
[pid 19676] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19676
[pid 19676] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19676] setpgid(0, 0)               = 0
[pid 19676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19676] write(3, "1000", 4)         = 4
[pid 19676] close(3)                    = 0
[pid 19676] write(1, "executing program\n", 18executing program
) = 18
[pid 19676] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19676] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19676] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19676] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19676] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19676] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19676] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19677]}, 88) = 19677
[pid 19676] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19676] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19676] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19677 attached
 <unfinished ...>
[pid 19677] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19677] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19677] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19677] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19676] <... futex resumed>)        = 0
[pid 19676] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19676] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19677] <... futex resumed>)        = 1
[pid 19677] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19677] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19676] <... futex resumed>)        = 0
[pid 19676] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19676] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19677] <... futex resumed>)        = 1
[pid 19677] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19677] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19676] <... futex resumed>)        = 0
[pid 19676] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19676] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19677] <... futex resumed>)        = 1
[pid 19677] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19677] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19676] <... futex resumed>)        = 0
[pid 19676] exit_group(0)               = ?
[pid 19677] <... futex resumed>)        = ?
[pid 19677] +++ exited with 0 +++
[pid 19676] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19676, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19678
./strace-static-x86_64: Process 19678 attached
[pid 19678] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19678] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19678] setpgid(0, 0)               = 0
[pid 19678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19678] write(3, "1000", 4executing program
)         = 4
[pid 19678] close(3)                    = 0
[pid 19678] write(1, "executing program\n", 18) = 18
[pid 19678] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19678] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19678] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19678] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19678] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19678] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19678] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19679 attached
 => {parent_tid=[19679]}, 88) = 19679
[pid 19678] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19678] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19678] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19679] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19679] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19679] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19679] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19678] <... futex resumed>)        = 0
[pid 19678] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19678] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19679] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19679] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19678] <... futex resumed>)        = 0
[pid 19678] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19678] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19679] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19679] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19678] <... futex resumed>)        = 0
[pid 19678] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19678] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19679] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19679] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19678] <... futex resumed>)        = 0
[pid 19678] exit_group(0)               = ?
[pid 19679] +++ exited with 0 +++
[pid 19678] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19678, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19680
./strace-static-x86_64: Process 19680 attached
[pid 19680] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19680] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19680] setpgid(0, 0)               = 0
[pid 19680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19680] write(3, "1000", 4)         = 4
[pid 19680] close(3)                    = 0
[pid 19680] write(1, "executing program\n", 18executing program
) = 18
[pid 19680] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19680] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19680] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19680] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19680] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19680] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19680] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19681 attached
 => {parent_tid=[19681]}, 88) = 19681
[pid 19681] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19680] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19681] <... set_robust_list resumed>) = 0
[pid 19680] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19681] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19680] <... futex resumed>)        = 0
[pid 19680] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19681] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19681] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19681] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19680] <... futex resumed>)        = 0
[pid 19680] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19680] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19681] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19681] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19680] <... futex resumed>)        = 0
[pid 19680] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19680] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19681] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19681] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19680] <... futex resumed>)        = 0
[pid 19680] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19680] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19681] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19681] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19680] <... futex resumed>)        = 0
[pid 19680] exit_group(0)               = ?
[pid 19681] +++ exited with 0 +++
[pid 19680] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19680, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19682
./strace-static-x86_64: Process 19682 attached
[pid 19682] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19682] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19682] setpgid(0, 0)               = 0
[pid 19682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19682] write(3, "1000", 4)         = 4
[pid 19682] close(3)                    = 0
[pid 19682] write(1, "executing program\n", 18executing program
) = 18
[pid 19682] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19682] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19682] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19682] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19682] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19682] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19682] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19683 attached
 => {parent_tid=[19683]}, 88) = 19683
[pid 19682] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19682] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19682] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19683] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19683] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19683] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19683] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19682] <... futex resumed>)        = 0
[pid 19682] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19682] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19683] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19683] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19682] <... futex resumed>)        = 0
[pid 19682] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19682] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19683] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19683] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19682] <... futex resumed>)        = 0
[pid 19682] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19682] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19683] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19683] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19682] <... futex resumed>)        = 0
[pid 19683] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19682] exit_group(0 <unfinished ...>
[pid 19683] <... futex resumed>)        = ?
[pid 19682] <... exit_group resumed>)   = ?
[pid 19683] +++ exited with 0 +++
[pid 19682] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19682, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19684 attached
 <unfinished ...>
[pid 19684] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19684] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19684
[pid 19684] <... prctl resumed>)        = 0
[pid 19684] setpgid(0, 0)               = 0
[pid 19684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19684] write(3, "1000", 4)         = 4
[pid 19684] close(3)                    = 0
[pid 19684] write(1, "executing program\n", 18executing program
) = 18
[pid 19684] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19684] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19684] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19684] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19684] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19684] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19684] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19685]}, 88) = 19685
./strace-static-x86_64: Process 19685 attached
[pid 19685] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19684] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19685] <... set_robust_list resumed>) = 0
[pid 19684] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19685] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19684] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19685] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19684] <... futex resumed>)        = 0
[pid 19685] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19684] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19685] <... 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 19685] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19684] <... futex resumed>)        = 0
[pid 19685] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19684] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19685] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19685] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19684] <... futex resumed>)        = 0
[pid 19685] <... futex resumed>)        = 0
[pid 19684] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19685] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19684] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19685] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19684] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19685] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19684] <... futex resumed>)        = 0
[pid 19685] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19684] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19685] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19684] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19684] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19684] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19685] <... futex resumed>)        = 1
[pid 19684] <... futex resumed>)        = 0
[pid 19685] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19684] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=49000000} <unfinished ...>
[pid 19685] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19685] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19684] <... futex resumed>)        = 0
[pid 19685] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19684] exit_group(0 <unfinished ...>
[pid 19685] <... futex resumed>)        = ?
[pid 19684] <... exit_group resumed>)   = ?
[pid 19685] +++ exited with 0 +++
[pid 19684] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19684, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19686
./strace-static-x86_64: Process 19686 attached
[pid 19686] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19686] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19686] setpgid(0, 0)               = 0
[pid 19686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19686] write(3, "1000", 4)         = 4
[pid 19686] close(3)                    = 0
[pid 19686] write(1, "executing program\n", 18executing program
) = 18
[pid 19686] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19686] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19686] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19686] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19686] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19686] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19686] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19687]}, 88) = 19687
[pid 19686] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19686] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19686] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19687 attached
 <unfinished ...>
[pid 19687] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19687] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19687] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19687] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19686] <... futex resumed>)        = 0
[pid 19687] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19686] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19687] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19686] <... futex resumed>)        = 0
[pid 19687] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19686] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19687] <... futex resumed>)        = 0
[pid 19686] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19687] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19686] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19687] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19686] <... futex resumed>)        = 0
[pid 19687] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19686] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19687] <... futex resumed>)        = 0
[pid 19686] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19687] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19686] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19686] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19687] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19687] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19686] <... futex resumed>)        = 0
[pid 19687] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19686] exit_group(0 <unfinished ...>
[pid 19687] <... futex resumed>)        = ?
[pid 19686] <... exit_group resumed>)   = ?
[pid 19687] +++ exited with 0 +++
[pid 19686] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19686, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19688
./strace-static-x86_64: Process 19688 attached
[pid 19688] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19688] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19688] setpgid(0, 0)               = 0
[pid 19688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19688] write(3, "1000", 4)         = 4
[pid 19688] close(3executing program
)                    = 0
[pid 19688] write(1, "executing program\n", 18) = 18
[pid 19688] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19688] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19688] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19688] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19688] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19688] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19688] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19689]}, 88) = 19689
./strace-static-x86_64: Process 19689 attached
[pid 19689] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19689] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19689] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19688] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19688] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19689] <... futex resumed>)        = 0
[pid 19688] <... futex resumed>)        = 1
[pid 19689] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19688] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19689] <... 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 19689] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19689] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19688] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19688] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19689] <... futex resumed>)        = 0
[pid 19688] <... futex resumed>)        = 1
[pid 19689] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19688] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19689] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19689] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19688] <... futex resumed>)        = 0
[pid 19689] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19688] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19689] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19688] <... futex resumed>)        = 0
[pid 19689] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19688] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19689] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19689] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19688] <... futex resumed>)        = 0
[pid 19689] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19688] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19689] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19688] <... futex resumed>)        = 0
[pid 19689] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19688] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19689] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19689] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19688] <... futex resumed>)        = 0
[pid 19689] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19688] exit_group(0 <unfinished ...>
[pid 19689] <... futex resumed>)        = ?
[pid 19688] <... exit_group resumed>)   = ?
[pid 19689] +++ exited with 0 +++
[pid 19688] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19688, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19690
./strace-static-x86_64: Process 19690 attached
[pid 19690] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19690] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19690] setpgid(0, 0)               = 0
[pid 19690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19690] write(3, "1000", 4)         = 4
[pid 19690] close(3executing program
)                    = 0
[pid 19690] write(1, "executing program\n", 18) = 18
[pid 19690] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19690] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19690] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19690] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19690] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19690] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19690] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19691 attached
 => {parent_tid=[19691]}, 88) = 19691
[pid 19690] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19690] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19690] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19691] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19691] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19691] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19691] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19690] <... futex resumed>)        = 0
[pid 19691] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19690] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19691] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19690] <... futex resumed>)        = 0
[pid 19691] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19690] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19691] <... futex resumed>)        = 0
[pid 19690] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19691] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19690] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19691] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19690] <... futex resumed>)        = 0
[pid 19691] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19690] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19691] <... futex resumed>)        = 0
[pid 19690] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19691] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19690] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19690] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19691] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19691] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19690] <... futex resumed>)        = 0
[pid 19691] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19690] exit_group(0 <unfinished ...>
[pid 19691] <... futex resumed>)        = ?
[pid 19690] <... exit_group resumed>)   = ?
[pid 19691] +++ exited with 0 +++
[pid 19690] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19690, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19692
./strace-static-x86_64: Process 19692 attached
[pid 19692] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19692] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19692] setpgid(0, 0)               = 0
[pid 19692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19692] write(3, "1000", 4)         = 4
[pid 19692] close(3)                    = 0
[pid 19692] write(1, "executing program\n", 18executing program
) = 18
[pid 19692] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19692] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19692] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19692] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19692] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19692] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19692] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19693 attached
 => {parent_tid=[19693]}, 88) = 19693
[pid 19692] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19693] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19692] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19693] <... set_robust_list resumed>) = 0
[pid 19693] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19692] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19693] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19692] <... futex resumed>)        = 0
[pid 19693] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19692] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19693] <... 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 19693] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19692] <... futex resumed>)        = 0
[pid 19692] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19692] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19693] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19693] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19692] <... futex resumed>)        = 0
[pid 19692] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19692] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19693] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19693] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19692] <... futex resumed>)        = 0
[pid 19692] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19692] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19693] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19693] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19693] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19692] <... futex resumed>)        = 0
[pid 19692] exit_group(0)               = ?
[pid 19693] <... futex resumed>)        = ?
[pid 19693] +++ exited with 0 +++
[pid 19692] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19692, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19694
./strace-static-x86_64: Process 19694 attached
[pid 19694] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19694] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19694] setpgid(0, 0)               = 0
[pid 19694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19694] write(3, "1000", 4)         = 4
[pid 19694] close(3)                    = 0
[pid 19694] write(1, "executing program\n", 18) = 18
executing program
[pid 19694] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19694] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19694] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19694] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19694] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19694] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19694] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19695]}, 88) = 19695
[pid 19694] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19694] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19694] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19695 attached
 <unfinished ...>
[pid 19695] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19695] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19695] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19695] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19694] <... futex resumed>)        = 0
[pid 19694] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19694] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19695] <... futex resumed>)        = 1
[pid 19695] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19695] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19694] <... futex resumed>)        = 0
[pid 19694] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19694] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19695] <... futex resumed>)        = 1
[pid 19695] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19695] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19694] <... futex resumed>)        = 0
[pid 19694] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19694] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19695] <... futex resumed>)        = 1
[pid 19695] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19695] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19694] <... futex resumed>)        = 0
[pid 19694] exit_group(0)               = ?
[pid 19695] <... futex resumed>)        = ?
[pid 19695] +++ exited with 0 +++
[pid 19694] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19694, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19696 attached
, child_tidptr=0x55557c828690) = 19696
[pid 19696] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19696] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19696] setpgid(0, 0)               = 0
[pid 19696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19696] write(3, "1000", 4)         = 4
[pid 19696] close(3)                    = 0
executing program
[pid 19696] write(1, "executing program\n", 18) = 18
[pid 19696] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19696] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19696] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19696] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19696] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19696] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19696] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19697 attached
 => {parent_tid=[19697]}, 88) = 19697
[pid 19697] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19696] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19697] <... set_robust_list resumed>) = 0
[pid 19696] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19697] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19696] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19697] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19696] <... futex resumed>)        = 0
[pid 19697] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19696] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19697] <... 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 19697] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19696] <... futex resumed>)        = 0
[pid 19696] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19696] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19697] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19697] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19696] <... futex resumed>)        = 0
[pid 19696] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19696] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19697] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19697] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19696] <... futex resumed>)        = 0
[pid 19696] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19696] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19697] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19697] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19696] <... futex resumed>)        = 0
[pid 19696] exit_group(0)               = ?
[pid 19697] +++ exited with 0 +++
[pid 19696] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19696, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19698
./strace-static-x86_64: Process 19698 attached
[pid 19698] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19698] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19698] setpgid(0, 0)               = 0
[pid 19698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
executing program
[pid 19698] write(3, "1000", 4)         = 4
[pid 19698] close(3)                    = 0
[pid 19698] write(1, "executing program\n", 18) = 18
[pid 19698] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19698] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19698] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19698] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19698] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19698] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19698] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19699 attached
 => {parent_tid=[19699]}, 88) = 19699
[pid 19698] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19699] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19698] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19699] <... set_robust_list resumed>) = 0
[pid 19698] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19699] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19698] <... futex resumed>)        = 0
[pid 19699] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19698] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19699] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19699] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19698] <... futex resumed>)        = 0
[pid 19698] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19698] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19699] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19699] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19698] <... futex resumed>)        = 0
[pid 19698] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19698] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19699] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19699] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19698] <... futex resumed>)        = 0
[pid 19698] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19698] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19699] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19699] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19698] <... futex resumed>)        = 0
[pid 19698] exit_group(0 <unfinished ...>
[pid 19699] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19698] <... exit_group resumed>)   = ?
[pid 19699] <... futex resumed>)        = ?
[pid 19699] +++ exited with 0 +++
[pid 19698] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19698, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19700
./strace-static-x86_64: Process 19700 attached
[pid 19700] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19700] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19700] setpgid(0, 0)               = 0
[pid 19700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19700] write(3, "1000", 4)         = 4
[pid 19700] close(3)                    = 0
[pid 19700] write(1, "executing program\n", 18) = 18
executing program
[pid 19700] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19700] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19700] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19700] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19700] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19700] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19700] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19701 attached
 => {parent_tid=[19701]}, 88) = 19701
[pid 19700] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19700] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19700] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19701] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19701] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19701] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19701] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19700] <... futex resumed>)        = 0
[pid 19700] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19700] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19701] <... futex resumed>)        = 1
[pid 19701] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19701] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19700] <... futex resumed>)        = 0
[pid 19700] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19700] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19701] <... futex resumed>)        = 1
[pid 19701] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19701] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19700] <... futex resumed>)        = 0
[pid 19700] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19700] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19701] <... futex resumed>)        = 1
[pid 19701] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19701] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19700] <... futex resumed>)        = 0
[pid 19700] exit_group(0)               = ?
[pid 19701] <... futex resumed>)        = ?
[pid 19701] +++ exited with 0 +++
[pid 19700] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19700, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19702
./strace-static-x86_64: Process 19702 attached
[pid 19702] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19702] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19702] setpgid(0, 0)               = 0
[pid 19702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19702] write(3, "1000", 4)         = 4
[pid 19702] close(3)                    = 0
[pid 19702] write(1, "executing program\n", 18executing program
) = 18
[pid 19702] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19702] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19702] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19702] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19702] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19702] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19702] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19703 attached
 => {parent_tid=[19703]}, 88) = 19703
[pid 19703] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19702] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19703] <... set_robust_list resumed>) = 0
[pid 19703] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19703] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19702] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19702] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19703] <... futex resumed>)        = 0
[pid 19703] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19702] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19703] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19703] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19702] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19702] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19703] <... futex resumed>)        = 0
[pid 19703] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19702] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19703] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19702] <... futex resumed>)        = 0
[pid 19702] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19702] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19703] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19703] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19702] <... futex resumed>)        = 0
[pid 19702] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19702] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19703] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19703] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19702] <... futex resumed>)        = 0
[pid 19702] exit_group(0)               = ?
[pid 19703] +++ exited with 0 +++
[pid 19702] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19702, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19704
./strace-static-x86_64: Process 19704 attached
[pid 19704] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19704] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19704] setpgid(0, 0)               = 0
[pid 19704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19704] write(3, "1000", 4)         = 4
[pid 19704] close(3)                    = 0
executing program
[pid 19704] write(1, "executing program\n", 18) = 18
[pid 19704] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19704] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19704] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19704] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19704] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19704] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19704] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19705 attached
 => {parent_tid=[19705]}, 88) = 19705
[pid 19705] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19704] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19704] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19704] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19705] <... set_robust_list resumed>) = 0
[pid 19705] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19705] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19705] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19705] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19704] <... futex resumed>)        = 0
[pid 19704] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19704] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19705] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19705] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19705] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19704] <... futex resumed>)        = 0
[pid 19704] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19705] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19705] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19705] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19704] <... futex resumed>)        = 1
[pid 19704] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19704] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19704] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19705] <... futex resumed>)        = 0
[pid 19705] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19705] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19704] <... futex resumed>)        = 0
[pid 19704] exit_group(0)               = ?
[pid 19705] +++ exited with 0 +++
[pid 19704] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19704, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19706
./strace-static-x86_64: Process 19706 attached
[pid 19706] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19706] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19706] setpgid(0, 0)               = 0
[pid 19706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19706] write(3, "1000", 4)         = 4
[pid 19706] close(3)                    = 0
[pid 19706] write(1, "executing program\n", 18executing program
) = 18
[pid 19706] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19706] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19706] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19706] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19706] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19706] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19706] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19707 attached
 <unfinished ...>
[pid 19707] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19707] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19707] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19706] <... clone3 resumed> => {parent_tid=[19707]}, 88) = 19707
[pid 19706] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19706] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19707] <... futex resumed>)        = 0
[pid 19706] <... futex resumed>)        = 1
[pid 19707] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19706] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19707] <... 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 19707] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19706] <... futex resumed>)        = 0
[pid 19707] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19706] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19707] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19706] <... futex resumed>)        = 0
[pid 19707] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19706] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19707] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19707] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19707] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19706] <... futex resumed>)        = 0
[pid 19706] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19707] <... futex resumed>)        = 0
[pid 19706] <... futex resumed>)        = 1
[pid 19707] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19706] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19707] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19707] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19706] <... futex resumed>)        = 0
[pid 19707] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19706] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19706] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19707] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19707] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19706] <... futex resumed>)        = 0
[pid 19707] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19706] exit_group(0 <unfinished ...>
[pid 19707] <... futex resumed>)        = ?
[pid 19706] <... exit_group resumed>)   = ?
[pid 19707] +++ exited with 0 +++
[pid 19706] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19706, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19708
./strace-static-x86_64: Process 19708 attached
[pid 19708] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19708] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19708] setpgid(0, 0)               = 0
[pid 19708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19708] write(3, "1000", 4)         = 4
[pid 19708] close(3)                    = 0
[pid 19708] write(1, "executing program\n", 18executing program
) = 18
[pid 19708] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19708] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19708] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19708] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19708] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19708] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19708] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19709]}, 88) = 19709
[pid 19708] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19708] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19708] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19709 attached
 <unfinished ...>
[pid 19709] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19709] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19709] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19709] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19708] <... futex resumed>)        = 0
[pid 19708] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19708] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19709] <... futex resumed>)        = 1
[pid 19709] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19709] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19708] <... futex resumed>)        = 0
[pid 19708] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19708] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19709] <... futex resumed>)        = 1
[pid 19709] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19709] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19708] <... futex resumed>)        = 0
[pid 19708] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19708] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19709] <... futex resumed>)        = 1
[pid 19709] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19709] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19708] <... futex resumed>)        = 0
[pid 19708] exit_group(0)               = ?
[pid 19709] <... futex resumed>)        = ?
[pid 19709] +++ exited with 0 +++
[pid 19708] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19708, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19710
./strace-static-x86_64: Process 19710 attached
[pid 19710] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19710] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19710] setpgid(0, 0)               = 0
[pid 19710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19710] write(3, "1000", 4)         = 4
executing program
[pid 19710] close(3)                    = 0
[pid 19710] write(1, "executing program\n", 18) = 18
[pid 19710] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19710] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19710] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19710] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19710] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19710] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19710] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19711]}, 88) = 19711
[pid 19710] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19710] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19710] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19711 attached
 <unfinished ...>
[pid 19711] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19711] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19711] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19711] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19710] <... futex resumed>)        = 0
[pid 19710] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19710] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19711] <... futex resumed>)        = 1
[pid 19711] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19711] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19710] <... futex resumed>)        = 0
[pid 19710] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19710] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19711] <... futex resumed>)        = 1
[pid 19711] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19711] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19710] <... futex resumed>)        = 0
[pid 19710] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19710] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19711] <... futex resumed>)        = 1
[pid 19711] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19711] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19710] <... futex resumed>)        = 0
[pid 19710] exit_group(0)               = ?
[pid 19711] <... futex resumed>)        = ?
[pid 19711] +++ exited with 0 +++
[pid 19710] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19710, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19712
./strace-static-x86_64: Process 19712 attached
[pid 19712] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19712] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19712] setpgid(0, 0)               = 0
[pid 19712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19712] write(3, "1000", 4)         = 4
[pid 19712] close(3)                    = 0
executing program
[pid 19712] write(1, "executing program\n", 18) = 18
[pid 19712] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19712] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19712] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19712] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19712] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19712] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19712] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19713 attached
 <unfinished ...>
[pid 19713] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19712] <... clone3 resumed> => {parent_tid=[19713]}, 88) = 19713
[pid 19713] <... set_robust_list resumed>) = 0
[pid 19712] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19713] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19712] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19713] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19712] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19713] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19712] <... futex resumed>)        = 0
[pid 19712] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19713] <... 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 19713] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19712] <... futex resumed>)        = 0
[pid 19712] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19712] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19713] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19713] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19712] <... futex resumed>)        = 0
[pid 19712] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19712] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19713] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19713] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19712] <... futex resumed>)        = 0
[pid 19712] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19712] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19713] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19713] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19712] <... futex resumed>)        = 0
[pid 19712] exit_group(0)               = ?
[pid 19713] +++ exited with 0 +++
[pid 19712] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19712, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19714
./strace-static-x86_64: Process 19714 attached
[pid 19714] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19714] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19714] setpgid(0, 0)               = 0
[pid 19714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19714] write(3, "1000", 4)         = 4
[pid 19714] close(3executing program
)                    = 0
[pid 19714] write(1, "executing program\n", 18) = 18
[pid 19714] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19714] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19714] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19714] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19714] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19714] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19714] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19715 attached
 => {parent_tid=[19715]}, 88) = 19715
[pid 19714] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19715] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19714] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19715] <... set_robust_list resumed>) = 0
[pid 19714] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19715] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19714] <... futex resumed>)        = 0
[pid 19715] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19714] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19715] <... 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 19715] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19714] <... futex resumed>)        = 0
[pid 19714] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19714] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19715] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19715] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19714] <... futex resumed>)        = 0
[pid 19714] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19714] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19715] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19715] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19714] <... futex resumed>)        = 0
[pid 19714] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19714] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19715] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19715] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19714] <... futex resumed>)        = 0
[pid 19714] exit_group(0 <unfinished ...>
[pid 19715] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19714] <... exit_group resumed>)   = ?
[pid 19715] <... futex resumed>)        = ?
[pid 19715] +++ exited with 0 +++
[pid 19714] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19714, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19716 attached
 <unfinished ...>
[pid 19716] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19716
[pid 19716] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19716] setpgid(0, 0)               = 0
[pid 19716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19716] write(3, "1000", 4)         = 4
[pid 19716] close(3)                    = 0
[pid 19716] write(1, "executing program\n", 18executing program
) = 18
[pid 19716] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19716] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19716] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19716] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19716] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19716] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19716] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19717 attached
 => {parent_tid=[19717]}, 88) = 19717
[pid 19717] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19716] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19717] <... set_robust_list resumed>) = 0
[pid 19716] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19717] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19716] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19717] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19716] <... futex resumed>)        = 0
[pid 19717] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19716] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19717] <... 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 19717] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19716] <... futex resumed>)        = 0
[pid 19717] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19716] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19717] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19716] <... futex resumed>)        = 0
[pid 19717] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19716] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19717] <... futex resumed>)        = 0
[pid 19716] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19717] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19716] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19717] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19716] <... futex resumed>)        = 0
[pid 19717] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19716] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19717] <... futex resumed>)        = 0
[pid 19716] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19717] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19716] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19717] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19716] <... futex resumed>)        = 0
[pid 19717] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19716] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19717] <... futex resumed>)        = 0
[pid 19716] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19717] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19716] exit_group(0 <unfinished ...>
[pid 19717] <... futex resumed>)        = ?
[pid 19716] <... exit_group resumed>)   = ?
[pid 19717] +++ exited with 0 +++
[pid 19716] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19716, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19718 attached
 <unfinished ...>
[pid 19718] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19718] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19718
[pid 19718] <... prctl resumed>)        = 0
[pid 19718] setpgid(0, 0)               = 0
[pid 19718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19718] write(3, "1000", 4)         = 4
[pid 19718] close(3)                    = 0
executing program
[pid 19718] write(1, "executing program\n", 18) = 18
[pid 19718] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19718] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19718] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19718] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19718] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19718] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19718] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19719 attached
 => {parent_tid=[19719]}, 88) = 19719
[pid 19718] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19718] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19718] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19719] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19719] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19719] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19719] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19718] <... futex resumed>)        = 0
[pid 19718] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19718] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19719] <... futex resumed>)        = 1
[pid 19719] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19719] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19718] <... futex resumed>)        = 0
[pid 19718] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19718] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19719] <... futex resumed>)        = 1
[pid 19719] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19719] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19718] <... futex resumed>)        = 0
[pid 19718] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19719] <... futex resumed>)        = 1
[pid 19718] <... futex resumed>)        = 0
[pid 19718] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19719] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19719] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19718] <... futex resumed>)        = 0
[pid 19718] exit_group(0)               = ?
[pid 19719] <... futex resumed>)        = ?
[pid 19719] +++ exited with 0 +++
[pid 19718] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19718, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19720
./strace-static-x86_64: Process 19720 attached
[pid 19720] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19720] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19720] setpgid(0, 0)               = 0
[pid 19720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19720] write(3, "1000", 4)         = 4
[pid 19720] close(3)                    = 0
executing program
[pid 19720] write(1, "executing program\n", 18) = 18
[pid 19720] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19720] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19720] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19720] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19720] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19720] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19720] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19721]}, 88) = 19721
[pid 19720] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19720] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19720] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19721 attached
 <unfinished ...>
[pid 19721] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19721] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19721] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19721] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19721] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19720] <... futex resumed>)        = 0
[pid 19720] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19720] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19721] <... futex resumed>)        = 0
[pid 19721] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19721] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19720] <... futex resumed>)        = 0
[pid 19720] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19720] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19721] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19721] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19720] <... futex resumed>)        = 0
[pid 19720] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19720] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19721] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19721] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19721] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19720] <... futex resumed>)        = 0
[pid 19720] exit_group(0)               = ?
[pid 19721] <... futex resumed>)        = ?
[pid 19721] +++ exited with 0 +++
[pid 19720] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19720, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19722 attached
, child_tidptr=0x55557c828690) = 19722
[pid 19722] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19722] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19722] setpgid(0, 0)               = 0
[pid 19722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19722] write(3, "1000", 4)         = 4
[pid 19722] close(3)                    = 0
[pid 19722] write(1, "executing program\n", 18executing program
) = 18
[pid 19722] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19722] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19722] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19722] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19722] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19722] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19722] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19723 attached
 => {parent_tid=[19723]}, 88) = 19723
[pid 19723] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19722] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19723] <... set_robust_list resumed>) = 0
[pid 19722] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19723] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19722] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19723] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19722] <... futex resumed>)        = 0
[pid 19723] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19722] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19723] <... 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 19723] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19722] <... futex resumed>)        = 0
[pid 19722] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19722] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19723] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19723] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19723] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19722] <... futex resumed>)        = 0
[pid 19722] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19722] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19723] <... futex resumed>)        = 0
[pid 19723] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19723] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19722] <... futex resumed>)        = 0
[pid 19722] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19722] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19723] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19723] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19722] <... futex resumed>)        = 0
[pid 19722] exit_group(0)               = ?
[pid 19723] +++ exited with 0 +++
[pid 19722] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19722, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19724 attached
, child_tidptr=0x55557c828690) = 19724
[pid 19724] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19724] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19724] setpgid(0, 0)               = 0
[pid 19724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19724] write(3, "1000", 4)         = 4
[pid 19724] close(3)                    = 0
executing program
[pid 19724] write(1, "executing program\n", 18) = 18
[pid 19724] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19724] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19724] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19724] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19724] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19724] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19724] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19725 attached
 => {parent_tid=[19725]}, 88) = 19725
[pid 19724] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19724] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19724] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19725] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19725] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19725] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19725] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19725] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19724] <... futex resumed>)        = 0
[pid 19724] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19725] <... futex resumed>)        = 0
[pid 19724] <... futex resumed>)        = 1
[pid 19725] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19724] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19725] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19725] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19724] <... futex resumed>)        = 0
[pid 19725] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19724] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19725] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19724] <... futex resumed>)        = 0
[pid 19725] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19724] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19725] <... futex resumed>)        = 0
[pid 19725] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19724] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19724] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19725] <... futex resumed>)        = 0
[pid 19724] <... futex resumed>)        = 1
[pid 19725] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19724] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19725] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19725] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19724] <... futex resumed>)        = 0
[pid 19725] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19724] exit_group(0 <unfinished ...>
[pid 19725] <... futex resumed>)        = ?
[pid 19724] <... exit_group resumed>)   = ?
[pid 19725] +++ exited with 0 +++
[pid 19724] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19724, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19726 attached
, child_tidptr=0x55557c828690) = 19726
[pid 19726] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19726] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19726] setpgid(0, 0)               = 0
[pid 19726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19726] write(3, "1000", 4)         = 4
[pid 19726] close(3)                    = 0
[pid 19726] write(1, "executing program\n", 18executing program
) = 18
[pid 19726] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19726] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19726] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19726] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19726] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19726] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19726] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19727 attached
 => {parent_tid=[19727]}, 88) = 19727
[pid 19727] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19726] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19727] <... set_robust_list resumed>) = 0
[pid 19726] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19727] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19726] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19727] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19726] <... futex resumed>)        = 0
[pid 19727] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19726] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19727] <... 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 19727] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19726] <... futex resumed>)        = 0
[pid 19727] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19726] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19727] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19726] <... futex resumed>)        = 0
[pid 19727] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19726] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19727] <... futex resumed>)        = 0
[pid 19726] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19727] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19726] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19727] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19726] <... futex resumed>)        = 0
[pid 19727] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19726] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19727] <... futex resumed>)        = 0
[pid 19726] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19727] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19726] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19726] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19727] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19727] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19727] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19726] <... futex resumed>)        = 0
[pid 19726] exit_group(0)               = ?
[pid 19727] <... futex resumed>)        = ?
[pid 19727] +++ exited with 0 +++
[pid 19726] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19726, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19728
./strace-static-x86_64: Process 19728 attached
[pid 19728] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19728] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19728] setpgid(0, 0)               = 0
[pid 19728] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19728] write(3, "1000", 4)         = 4
executing program
[pid 19728] close(3)                    = 0
[pid 19728] write(1, "executing program\n", 18) = 18
[pid 19728] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19728] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19728] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19728] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19728] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19728] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19728] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19729 attached
 => {parent_tid=[19729]}, 88) = 19729
[pid 19729] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19729] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19729] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19728] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19728] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19729] <... futex resumed>)        = 0
[pid 19728] <... futex resumed>)        = 1
[pid 19729] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19728] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19729] <... 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 19729] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19728] <... futex resumed>)        = 0
[pid 19729] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19728] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19729] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19728] <... futex resumed>)        = 0
[pid 19729] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19728] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19729] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19729] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19728] <... futex resumed>)        = 0
[pid 19729] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19728] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19729] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19728] <... futex resumed>)        = 0
[pid 19729] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19728] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19729] <... futex resumed>)        = 0
[pid 19728] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19729] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19728] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19729] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19728] <... futex resumed>)        = 0
[pid 19729] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19728] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19729] <... futex resumed>)        = 0
[pid 19728] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19729] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19728] exit_group(0 <unfinished ...>
[pid 19729] <... futex resumed>)        = ?
[pid 19728] <... exit_group resumed>)   = ?
[pid 19729] +++ exited with 0 +++
[pid 19728] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19728, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19730
./strace-static-x86_64: Process 19730 attached
[pid 19730] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19730] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19730] setpgid(0, 0)               = 0
[pid 19730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19730] write(3, "1000", 4)         = 4
[pid 19730] close(3)                    = 0
[pid 19730] write(1, "executing program\n", 18executing program
) = 18
[pid 19730] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19730] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19730] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19730] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19730] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19730] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19730] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19731 attached
 => {parent_tid=[19731]}, 88) = 19731
[pid 19730] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19730] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19730] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19731] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19731] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19731] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19731] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19731] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19730] <... futex resumed>)        = 0
[pid 19730] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19730] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19731] <... futex resumed>)        = 0
[pid 19731] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19731] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19730] <... futex resumed>)        = 0
[pid 19730] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19730] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19731] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19731] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19730] <... futex resumed>)        = 0
[pid 19730] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19730] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19731] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19731] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19730] <... futex resumed>)        = 0
[pid 19730] exit_group(0)               = ?
[pid 19731] +++ exited with 0 +++
[pid 19730] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19730, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19732
./strace-static-x86_64: Process 19732 attached
[pid 19732] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19732] setpgid(0, 0)               = 0
[pid 19732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19732] write(3, "1000", 4)         = 4
[pid 19732] close(3executing program
)                    = 0
[pid 19732] write(1, "executing program\n", 18) = 18
[pid 19732] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19732] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19732] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19732] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19732] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19732] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19732] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19733]}, 88) = 19733
./strace-static-x86_64: Process 19733 attached
[pid 19732] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19733] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19732] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19733] <... set_robust_list resumed>) = 0
[pid 19732] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19733] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19732] <... futex resumed>)        = 0
[pid 19733] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19732] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19733] <... 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 19733] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19732] <... futex resumed>)        = 0
[pid 19732] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19732] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19733] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19733] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19732] <... futex resumed>)        = 0
[pid 19732] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19732] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19733] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19733] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19732] <... futex resumed>)        = 0
[pid 19732] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19732] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19733] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19733] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19732] <... futex resumed>)        = 0
[pid 19732] exit_group(0)               = ?
[pid 19733] +++ exited with 0 +++
[pid 19732] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19732, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19734
./strace-static-x86_64: Process 19734 attached
[pid 19734] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19734] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19734] setpgid(0, 0)               = 0
[pid 19734] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19734] write(3, "1000", 4)         = 4
executing program
[pid 19734] close(3)                    = 0
[pid 19734] write(1, "executing program\n", 18) = 18
[pid 19734] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19734] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19734] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19734] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19734] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19734] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19734] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19735 attached
 => {parent_tid=[19735]}, 88) = 19735
[pid 19734] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19734] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19734] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19735] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19735] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19735] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19735] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19735] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19734] <... futex resumed>)        = 0
[pid 19734] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19734] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19735] <... futex resumed>)        = 0
[pid 19735] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19735] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19734] <... futex resumed>)        = 0
[pid 19734] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19734] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19735] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19735] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19734] <... futex resumed>)        = 0
[pid 19734] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19734] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19735] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19735] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19734] <... futex resumed>)        = 0
[pid 19734] exit_group(0)               = ?
[pid 19735] +++ exited with 0 +++
[pid 19734] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19734, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19736
./strace-static-x86_64: Process 19736 attached
[pid 19736] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19736] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19736] setpgid(0, 0)               = 0
[pid 19736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19736] write(3, "1000", 4executing program
)         = 4
[pid 19736] close(3)                    = 0
[pid 19736] write(1, "executing program\n", 18) = 18
[pid 19736] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19736] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19736] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19736] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19736] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19736] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19736] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19737]}, 88) = 19737
./strace-static-x86_64: Process 19737 attached
[pid 19736] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19736] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19736] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19737] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19737] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19737] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19737] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19736] <... futex resumed>)        = 0
[pid 19736] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19736] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19737] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19737] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19736] <... futex resumed>)        = 0
[pid 19737] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19736] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19737] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19736] <... futex resumed>)        = 0
[pid 19737] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19736] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19737] <... futex resumed>)        = 0
[pid 19736] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19737] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19736] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19737] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19736] <... futex resumed>)        = 0
[pid 19737] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19736] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19737] <... futex resumed>)        = 0
[pid 19736] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19737] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19736] exit_group(0 <unfinished ...>
[pid 19737] <... futex resumed>)        = ?
[pid 19736] <... exit_group resumed>)   = ?
[pid 19737] +++ exited with 0 +++
[pid 19736] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19736, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19738
./strace-static-x86_64: Process 19738 attached
[pid 19738] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19738] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19738] setpgid(0, 0)               = 0
[pid 19738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19738] write(3, "1000", 4)         = 4
executing program
[pid 19738] close(3)                    = 0
[pid 19738] write(1, "executing program\n", 18) = 18
[pid 19738] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19738] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19738] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19738] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19738] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19738] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19738] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19739 attached
 => {parent_tid=[19739]}, 88) = 19739
[pid 19738] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19738] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19738] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19739] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19739] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19739] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19739] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19738] <... futex resumed>)        = 0
[pid 19739] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19738] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19739] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19738] <... futex resumed>)        = 0
[pid 19739] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19738] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19739] <... futex resumed>)        = 0
[pid 19738] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19739] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19738] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19739] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19738] <... futex resumed>)        = 0
[pid 19739] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19738] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19739] <... futex resumed>)        = 0
[pid 19738] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19739] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19738] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19739] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19738] <... futex resumed>)        = 0
[pid 19739] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19738] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19739] <... futex resumed>)        = 0
[pid 19738] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19739] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19738] exit_group(0 <unfinished ...>
[pid 19739] <... futex resumed>)        = ?
[pid 19738] <... exit_group resumed>)   = ?
[pid 19739] +++ exited with 0 +++
[pid 19738] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19738, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19740
./strace-static-x86_64: Process 19740 attached
[pid 19740] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19740] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19740] setpgid(0, 0)               = 0
[pid 19740] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19740] write(3, "1000", 4)         = 4
[pid 19740] close(3)                    = 0
executing program
[pid 19740] write(1, "executing program\n", 18) = 18
[pid 19740] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19740] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19740] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19740] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19740] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19740] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19740] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19741 attached
 => {parent_tid=[19741]}, 88) = 19741
[pid 19740] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19740] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19740] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19741] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19741] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19741] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19741] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19740] <... futex resumed>)        = 0
[pid 19741] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19740] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19741] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19740] <... futex resumed>)        = 0
[pid 19741] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19740] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19741] <... futex resumed>)        = 0
[pid 19740] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19741] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19740] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19741] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19740] <... futex resumed>)        = 0
[pid 19741] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19740] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19741] <... futex resumed>)        = 0
[pid 19740] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19741] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19740] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19741] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19740] <... futex resumed>)        = 0
[pid 19741] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19740] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19741] <... futex resumed>)        = 0
[pid 19740] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19741] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19740] exit_group(0 <unfinished ...>
[pid 19741] <... futex resumed>)        = ?
[pid 19740] <... exit_group resumed>)   = ?
[pid 19741] +++ exited with 0 +++
[pid 19740] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19740, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19742 attached
 <unfinished ...>
[pid 19742] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19742
[pid 19742] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19742] setpgid(0, 0)               = 0
[pid 19742] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19742] write(3, "1000", 4)         = 4
[pid 19742] close(3)                    = 0
executing program
[pid 19742] write(1, "executing program\n", 18) = 18
[pid 19742] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19742] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19742] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19742] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19742] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19742] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19742] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19743]}, 88) = 19743
[pid 19742] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19742] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19742] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19743 attached
 <unfinished ...>
[pid 19743] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19743] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19743] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19743] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19742] <... futex resumed>)        = 0
[pid 19742] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19742] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19743] <... futex resumed>)        = 1
[pid 19743] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19743] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19742] <... futex resumed>)        = 0
[pid 19742] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19742] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19743] <... futex resumed>)        = 1
[pid 19743] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19743] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19742] <... futex resumed>)        = 0
[pid 19742] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19742] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19743] <... futex resumed>)        = 1
[pid 19743] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19743] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19742] <... futex resumed>)        = 0
[pid 19742] exit_group(0)               = ?
[pid 19743] <... futex resumed>)        = ?
[pid 19743] +++ exited with 0 +++
[pid 19742] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19742, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19744 attached
, child_tidptr=0x55557c828690) = 19744
[pid 19744] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19744] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19744] setpgid(0, 0)               = 0
[pid 19744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19744] write(3, "1000", 4)         = 4
[pid 19744] close(3executing program
)                    = 0
[pid 19744] write(1, "executing program\n", 18) = 18
[pid 19744] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19744] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19744] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19744] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19744] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19744] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19744] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19745 attached
 <unfinished ...>
[pid 19745] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19744] <... clone3 resumed> => {parent_tid=[19745]}, 88) = 19745
[pid 19744] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19745] <... set_robust_list resumed>) = 0
[pid 19744] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19745] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19744] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19745] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19744] <... futex resumed>)        = 0
[pid 19745] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19744] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19745] <... 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 19745] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19744] <... futex resumed>)        = 0
[pid 19744] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19744] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19745] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19745] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19744] <... futex resumed>)        = 0
[pid 19744] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19744] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19745] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19745] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19744] <... futex resumed>)        = 0
[pid 19744] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19744] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19745] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19745] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19744] <... futex resumed>)        = 0
[pid 19744] exit_group(0 <unfinished ...>
[pid 19745] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19744] <... exit_group resumed>)   = ?
[pid 19745] <... futex resumed>)        = ?
[pid 19745] +++ exited with 0 +++
[pid 19744] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19744, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19746
./strace-static-x86_64: Process 19746 attached
[pid 19746] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19746] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19746] setpgid(0, 0)               = 0
[pid 19746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19746] write(3, "1000", 4)         = 4
[pid 19746] close(3executing program
)                    = 0
[pid 19746] write(1, "executing program\n", 18) = 18
[pid 19746] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19746] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19746] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19746] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19746] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19746] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19746] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19747]}, 88) = 19747
./strace-static-x86_64: Process 19747 attached
[pid 19747] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19747] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19747] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19746] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19746] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19747] <... futex resumed>)        = 0
[pid 19747] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19746] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19747] <... 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 19747] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19746] <... futex resumed>)        = 0
[pid 19746] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19746] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19747] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19747] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19746] <... futex resumed>)        = 0
[pid 19746] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19746] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19747] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19747] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19746] <... futex resumed>)        = 0
[pid 19746] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19746] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19747] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19747] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19746] <... futex resumed>)        = 0
[pid 19746] exit_group(0)               = ?
[pid 19747] +++ exited with 0 +++
[pid 19746] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19746, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19748 attached
 <unfinished ...>
[pid 19748] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19748
[pid 19748] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19748] setpgid(0, 0)               = 0
[pid 19748] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19748] write(3, "1000", 4)         = 4
[pid 19748] close(3)                    = 0
[pid 19748] write(1, "executing program\n", 18executing program
) = 18
[pid 19748] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19748] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19748] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19748] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19748] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19748] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19748] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19749 attached
 => {parent_tid=[19749]}, 88) = 19749
[pid 19748] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19748] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19748] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19749] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19749] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19749] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19749] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19748] <... futex resumed>)        = 0
[pid 19748] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19749] <... futex resumed>)        = 1
[pid 19748] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19749] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19749] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19748] <... futex resumed>)        = 0
[pid 19749] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19748] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19749] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19748] <... futex resumed>)        = 0
[pid 19749] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19748] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19749] <... futex resumed>)        = 0
[pid 19748] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19749] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19748] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19749] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19748] <... futex resumed>)        = 0
[pid 19749] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19748] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19749] <... futex resumed>)        = 0
[pid 19748] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19749] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19748] exit_group(0 <unfinished ...>
[pid 19749] <... futex resumed>)        = ?
[pid 19748] <... exit_group resumed>)   = ?
[pid 19749] +++ exited with 0 +++
[pid 19748] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19748, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19750 attached
 <unfinished ...>
[pid 19750] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19750] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19750] setpgid(0, 0)               = 0
[pid 19750] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19750
[pid 19750] <... openat resumed>)       = 3
[pid 19750] write(3, "1000", 4)         = 4
[pid 19750] close(3)                    = 0
[pid 19750] write(1, "executing program\n", 18executing program
) = 18
[pid 19750] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19750] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19750] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19750] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19750] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19750] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19750] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19751 attached
 <unfinished ...>
[pid 19751] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19750] <... clone3 resumed> => {parent_tid=[19751]}, 88) = 19751
[pid 19751] <... set_robust_list resumed>) = 0
[pid 19750] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19751] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19750] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19751] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19750] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19750] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19751] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19751] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19751] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19750] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19750] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19751] <... futex resumed>)        = 0
[pid 19750] <... futex resumed>)        = 1
[pid 19751] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19750] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19751] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19751] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19750] <... futex resumed>)        = 0
[pid 19751] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19750] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19751] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19750] <... futex resumed>)        = 0
[pid 19751] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19750] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19751] <... futex resumed>)        = 0
[pid 19750] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19751] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19750] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19751] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19750] <... futex resumed>)        = 0
[pid 19751] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19750] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19751] <... futex resumed>)        = 0
[pid 19750] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19751] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19750] exit_group(0 <unfinished ...>
[pid 19751] <... futex resumed>)        = ?
[pid 19750] <... exit_group resumed>)   = ?
[pid 19751] +++ exited with 0 +++
[pid 19750] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19750, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19752
./strace-static-x86_64: Process 19752 attached
[pid 19752] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19752] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19752] setpgid(0, 0)               = 0
[pid 19752] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19752] write(3, "1000", 4)         = 4
executing program
[pid 19752] close(3)                    = 0
[pid 19752] write(1, "executing program\n", 18) = 18
[pid 19752] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19752] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19752] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19752] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19752] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19752] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19752] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19753]}, 88) = 19753
./strace-static-x86_64: Process 19753 attached
[pid 19752] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19753] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19753] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19753] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19752] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19752] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19753] <... futex resumed>)        = 0
[pid 19752] <... futex resumed>)        = 1
[pid 19753] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19752] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19753] <... 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 19753] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19753] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19752] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19752] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19753] <... futex resumed>)        = 0
[pid 19752] <... futex resumed>)        = 1
[pid 19753] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19752] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19753] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19753] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19752] <... futex resumed>)        = 0
[pid 19753] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19752] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19752] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19753] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19753] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19753] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19752] <... futex resumed>)        = 0
[pid 19753] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19752] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19753] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19752] <... futex resumed>)        = 0
[pid 19753] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19752] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19753] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19753] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19752] <... futex resumed>)        = 0
[pid 19753] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19752] exit_group(0 <unfinished ...>
[pid 19753] <... futex resumed>)        = ?
[pid 19752] <... exit_group resumed>)   = ?
[pid 19753] +++ exited with 0 +++
[pid 19752] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19752, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19754 attached
, child_tidptr=0x55557c828690) = 19754
[pid 19754] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19754] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19754] setpgid(0, 0)               = 0
[pid 19754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19754] write(3, "1000", 4)         = 4
[pid 19754] close(3executing program
)                    = 0
[pid 19754] write(1, "executing program\n", 18) = 18
[pid 19754] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19754] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19754] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19754] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19754] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19754] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19754] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19755]}, 88) = 19755
[pid 19754] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 19755 attached
NULL, 8) = 0
[pid 19755] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19755] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19755] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19754] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19755] <... futex resumed>)        = 0
[pid 19754] <... futex resumed>)        = 1
[pid 19755] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19754] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19755] <... 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 19755] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19754] <... futex resumed>)        = 0
[pid 19755] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19754] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19755] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19754] <... futex resumed>)        = 0
[pid 19755] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19754] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19755] <... futex resumed>)        = 0
[pid 19754] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19755] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19754] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19755] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19754] <... futex resumed>)        = 0
[pid 19755] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19754] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19755] <... futex resumed>)        = 0
[pid 19754] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19755] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19754] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19755] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19754] <... futex resumed>)        = 0
[pid 19755] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19754] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19755] <... futex resumed>)        = 0
[pid 19754] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19755] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19754] exit_group(0 <unfinished ...>
[pid 19755] <... futex resumed>)        = ?
[pid 19754] <... exit_group resumed>)   = ?
[pid 19755] +++ exited with 0 +++
[pid 19754] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19754, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19756 attached
 <unfinished ...>
[pid 19756] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19756] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19756] setpgid(0, 0)               = 0
[pid 19756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19756
[pid 19756] <... openat resumed>)       = 3
[pid 19756] write(3, "1000", 4)         = 4
[pid 19756] close(3)                    = 0
[pid 19756] write(1, "executing program\n", 18executing program
) = 18
[pid 19756] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19756] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19756] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19756] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19756] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19756] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19756] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19757 attached
 => {parent_tid=[19757]}, 88) = 19757
[pid 19756] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19756] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19756] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19757] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19757] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19757] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19757] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19756] <... futex resumed>)        = 0
[pid 19756] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19756] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19757] <... futex resumed>)        = 1
[pid 19757] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19757] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19756] <... futex resumed>)        = 0
[pid 19756] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19756] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19757] <... futex resumed>)        = 1
[pid 19757] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19757] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19756] <... futex resumed>)        = 0
[pid 19756] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19756] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19757] <... futex resumed>)        = 1
[pid 19757] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19757] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19756] <... futex resumed>)        = 0
[pid 19756] exit_group(0)               = ?
[pid 19757] <... futex resumed>)        = ?
[pid 19757] +++ exited with 0 +++
[pid 19756] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19756, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19758 attached
, child_tidptr=0x55557c828690) = 19758
[pid 19758] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19758] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19758] setpgid(0, 0)               = 0
[pid 19758] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19758] write(3, "1000", 4)         = 4
[pid 19758] close(3)                    = 0
[pid 19758] write(1, "executing program\n", 18executing program
) = 18
[pid 19758] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19758] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19758] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19758] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19758] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19758] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19758] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19759]}, 88) = 19759
[pid 19758] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 19759 attached
NULL, 8) = 0
[pid 19758] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19758] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19759] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19759] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19759] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19759] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19759] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19758] <... futex resumed>)        = 0
[pid 19758] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19758] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19759] <... futex resumed>)        = 0
[pid 19759] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19759] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19759] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19758] <... futex resumed>)        = 0
[pid 19758] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19758] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19759] <... futex resumed>)        = 0
[pid 19759] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19759] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19758] <... futex resumed>)        = 0
[pid 19758] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19758] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19759] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19759] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19758] <... futex resumed>)        = 0
[pid 19758] exit_group(0)               = ?
[pid 19759] +++ exited with 0 +++
[pid 19758] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19758, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19760
./strace-static-x86_64: Process 19760 attached
[pid 19760] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19760] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19760] setpgid(0, 0)               = 0
[pid 19760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19760] write(3, "1000", 4)         = 4
[pid 19760] close(3)                    = 0
[pid 19760] write(1, "executing program\n", 18executing program
) = 18
[pid 19760] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19760] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19760] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19760] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19760] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19760] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19760] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19761]}, 88) = 19761
[pid 19760] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19760] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19760] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19761 attached
 <unfinished ...>
[pid 19761] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19761] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19761] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19761] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19760] <... futex resumed>)        = 0
[pid 19760] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19760] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19761] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19761] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19760] <... futex resumed>)        = 0
[pid 19760] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19760] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19761] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19761] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19760] <... futex resumed>)        = 0
[pid 19760] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19760] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19761] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19761] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19760] <... futex resumed>)        = 0
[pid 19760] exit_group(0)               = ?
[pid 19761] +++ exited with 0 +++
[pid 19760] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19760, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19762 attached
 <unfinished ...>
[pid 19762] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19762
[pid 19762] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19762] setpgid(0, 0)               = 0
[pid 19762] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19762] write(3, "1000", 4)         = 4
[pid 19762] close(3)                    = 0
[pid 19762] write(1, "executing program\n", 18) = 18
[pid 19762] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000executing program
) = 0
[pid 19762] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19762] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19762] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19762] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19762] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19762] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19763]}, 88) = 19763
[pid 19762] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19762] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19762] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19763 attached
 <unfinished ...>
[pid 19763] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19763] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19763] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19763] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19762] <... futex resumed>)        = 0
[pid 19762] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19762] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19763] <... futex resumed>)        = 1
[pid 19763] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19763] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19762] <... futex resumed>)        = 0
[pid 19762] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19762] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19763] <... futex resumed>)        = 1
[pid 19763] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19763] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19762] <... futex resumed>)        = 0
[pid 19762] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19762] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19763] <... futex resumed>)        = 1
[pid 19763] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19763] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19762] <... futex resumed>)        = 0
[pid 19762] exit_group(0 <unfinished ...>
[pid 19763] <... futex resumed>)        = 1
[pid 19762] <... exit_group resumed>)   = ?
[pid 19763] +++ exited with 0 +++
[pid 19762] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19762, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19764
./strace-static-x86_64: Process 19764 attached
[pid 19764] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19764] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19764] setpgid(0, 0)               = 0
[pid 19764] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19764] write(3, "1000", 4)         = 4
[pid 19764] close(3executing program
)                    = 0
[pid 19764] write(1, "executing program\n", 18) = 18
[pid 19764] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19764] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19764] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19764] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19764] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19764] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19764] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19765 attached
 => {parent_tid=[19765]}, 88) = 19765
[pid 19764] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19764] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19764] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19765] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19765] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19765] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19765] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19764] <... futex resumed>)        = 0
[pid 19764] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19764] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19765] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19765] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19764] <... futex resumed>)        = 0
[pid 19764] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19764] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19765] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19765] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19764] <... futex resumed>)        = 0
[pid 19764] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19764] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19765] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19765] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19764] <... futex resumed>)        = 0
[pid 19764] exit_group(0 <unfinished ...>
[pid 19765] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19764] <... exit_group resumed>)   = ?
[pid 19765] <... futex resumed>)        = ?
[pid 19765] +++ exited with 0 +++
[pid 19764] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19764, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19766
./strace-static-x86_64: Process 19766 attached
[pid 19766] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19766] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19766] setpgid(0, 0)               = 0
[pid 19766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19766] write(3, "1000", 4)         = 4
[pid 19766] close(3executing program
)                    = 0
[pid 19766] write(1, "executing program\n", 18) = 18
[pid 19766] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19766] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19766] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19766] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19766] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19766] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19766] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19767 attached
 => {parent_tid=[19767]}, 88) = 19767
[pid 19767] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19766] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19767] <... set_robust_list resumed>) = 0
[pid 19767] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19766] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19767] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19766] <... futex resumed>)        = 0
[pid 19767] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19766] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19767] <... 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 19767] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19766] <... futex resumed>)        = 0
[pid 19766] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19766] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19767] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19767] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19766] <... futex resumed>)        = 0
[pid 19766] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19766] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19767] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19767] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19766] <... futex resumed>)        = 0
[pid 19766] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19766] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19767] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19767] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19766] <... futex resumed>)        = 0
[pid 19766] exit_group(0)               = ?
[pid 19767] +++ exited with 0 +++
[pid 19766] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19766, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19768
./strace-static-x86_64: Process 19768 attached
[pid 19768] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19768] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19768] setpgid(0, 0)               = 0
[pid 19768] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19768] write(3, "1000", 4)         = 4
[pid 19768] close(3)                    = 0
[pid 19768] write(1, "executing program\n", 18executing program
) = 18
[pid 19768] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19768] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19768] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19768] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19768] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19768] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19768] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19769 attached
 => {parent_tid=[19769]}, 88) = 19769
[pid 19768] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19768] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19768] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19769] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19769] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19769] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19769] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19768] <... futex resumed>)        = 0
[pid 19768] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19768] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19769] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19769] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19768] <... futex resumed>)        = 0
[pid 19768] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19768] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19769] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19769] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19768] <... futex resumed>)        = 0
[pid 19769] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19768] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19769] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19768] <... futex resumed>)        = 0
[pid 19769] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19768] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19769] <... futex resumed>)        = 0
[pid 19768] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19769] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19768] exit_group(0 <unfinished ...>
[pid 19769] <... futex resumed>)        = ?
[pid 19768] <... exit_group resumed>)   = ?
[pid 19769] +++ exited with 0 +++
[pid 19768] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19768, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19770
./strace-static-x86_64: Process 19770 attached
[pid 19770] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19770] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19770] setpgid(0, 0)               = 0
[pid 19770] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19770] write(3, "1000", 4)         = 4
[pid 19770] close(3)                    = 0
[pid 19770] write(1, "executing program\n", 18executing program
) = 18
[pid 19770] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19770] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19770] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19770] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19770] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19770] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19770] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19771 attached
 => {parent_tid=[19771]}, 88) = 19771
[pid 19771] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19770] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19771] <... set_robust_list resumed>) = 0
[pid 19770] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19771] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19770] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19771] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19770] <... futex resumed>)        = 0
[pid 19771] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19770] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19771] <... 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 19771] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19770] <... futex resumed>)        = 0
[pid 19771] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19770] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19771] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19770] <... futex resumed>)        = 0
[pid 19771] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19770] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19771] <... futex resumed>)        = 0
[pid 19770] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19771] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19770] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19771] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19770] <... futex resumed>)        = 0
[pid 19771] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19770] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19771] <... futex resumed>)        = 0
[pid 19770] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19771] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19770] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19771] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19770] <... futex resumed>)        = 0
[pid 19770] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19771] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19770] <... futex resumed>)        = 0
[pid 19771] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19770] exit_group(0 <unfinished ...>
[pid 19771] <... futex resumed>)        = ?
[pid 19770] <... exit_group resumed>)   = ?
[pid 19771] +++ exited with 0 +++
[pid 19770] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19770, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19772 attached
, child_tidptr=0x55557c828690) = 19772
[pid 19772] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19772] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19772] setpgid(0, 0)               = 0
[pid 19772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19772] write(3, "1000", 4)         = 4
[pid 19772] close(3)                    = 0
[pid 19772] write(1, "executing program\n", 18executing program
) = 18
[pid 19772] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19772] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19772] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19772] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19772] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19772] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19772] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19773 attached
 => {parent_tid=[19773]}, 88) = 19773
[pid 19773] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19772] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19773] <... set_robust_list resumed>) = 0
[pid 19772] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19773] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19772] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19773] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19772] <... futex resumed>)        = 0
[pid 19773] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19772] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19773] <... 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 19773] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19772] <... futex resumed>)        = 0
[pid 19773] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19772] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19773] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19772] <... futex resumed>)        = 0
[pid 19773] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19772] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19773] <... futex resumed>)        = 0
[pid 19772] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19773] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19772] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19773] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19772] <... futex resumed>)        = 0
[pid 19773] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19772] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19773] <... futex resumed>)        = 0
[pid 19772] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19773] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19772] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19773] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19772] <... futex resumed>)        = 0
[pid 19773] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19772] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19773] <... futex resumed>)        = 0
[pid 19772] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19773] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19772] exit_group(0 <unfinished ...>
[pid 19773] <... futex resumed>)        = ?
[pid 19772] <... exit_group resumed>)   = ?
[pid 19773] +++ exited with 0 +++
[pid 19772] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19772, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19774
./strace-static-x86_64: Process 19774 attached
[pid 19774] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19774] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19774] setpgid(0, 0)               = 0
[pid 19774] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19774] write(3, "1000", 4)         = 4
[pid 19774] close(3)                    = 0
executing program
[pid 19774] write(1, "executing program\n", 18) = 18
[pid 19774] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19774] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19774] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19774] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19774] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19774] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19774] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19775]}, 88) = 19775
./strace-static-x86_64: Process 19775 attached
[pid 19775] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19774] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19774] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19774] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19775] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19775] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19775] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19774] <... futex resumed>)        = 0
[pid 19775] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19774] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19775] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19774] <... futex resumed>)        = 0
[pid 19775] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19774] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19775] <... futex resumed>)        = 0
[pid 19774] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19775] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19774] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19775] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19774] <... futex resumed>)        = 0
[pid 19775] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19774] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19775] <... futex resumed>)        = 0
[pid 19774] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19775] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19774] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19775] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19774] <... futex resumed>)        = 0
[pid 19775] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19774] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19775] <... futex resumed>)        = 0
[pid 19774] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19775] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19774] exit_group(0 <unfinished ...>
[pid 19775] <... futex resumed>)        = ?
[pid 19774] <... exit_group resumed>)   = ?
[pid 19775] +++ exited with 0 +++
[pid 19774] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19774, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19776
./strace-static-x86_64: Process 19776 attached
[pid 19776] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19776] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19776] setpgid(0, 0)               = 0
[pid 19776] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19776] write(3, "1000", 4)         = 4
[pid 19776] close(3)                    = 0
[pid 19776] write(1, "executing program\n", 18executing program
) = 18
[pid 19776] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19776] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19776] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19776] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19776] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19776] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19776] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19777]}, 88) = 19777
./strace-static-x86_64: Process 19777 attached
[pid 19776] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19776] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19776] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19777] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19777] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19777] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19777] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19776] <... futex resumed>)        = 0
[pid 19777] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19776] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19777] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19776] <... futex resumed>)        = 0
[pid 19777] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19776] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19777] <... futex resumed>)        = 0
[pid 19776] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19777] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19776] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19777] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19776] <... futex resumed>)        = 0
[pid 19777] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19776] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19777] <... futex resumed>)        = 0
[pid 19776] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19777] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19776] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19777] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19776] <... futex resumed>)        = 0
[pid 19777] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19776] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19777] <... futex resumed>)        = 0
[pid 19776] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19777] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19776] exit_group(0 <unfinished ...>
[pid 19777] <... futex resumed>)        = ?
[pid 19776] <... exit_group resumed>)   = ?
[pid 19777] +++ exited with 0 +++
[pid 19776] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19776, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19778
./strace-static-x86_64: Process 19778 attached
[pid 19778] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19778] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19778] setpgid(0, 0)               = 0
[pid 19778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19778] write(3, "1000", 4)         = 4
[pid 19778] close(3)                    = 0
[pid 19778] write(1, "executing program\n", 18executing program
) = 18
[pid 19778] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19778] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19778] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19778] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19778] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19778] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19778] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19779]}, 88) = 19779
./strace-static-x86_64: Process 19779 attached
[pid 19779] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19779] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19779] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19778] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19778] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19779] <... futex resumed>)        = 0
[pid 19778] <... futex resumed>)        = 1
[pid 19779] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19778] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19779] <... 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 19779] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19779] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19778] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19778] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19779] <... futex resumed>)        = 0
[pid 19778] <... futex resumed>)        = 1
[pid 19779] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19778] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19779] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19779] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19778] <... futex resumed>)        = 0
[pid 19779] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19778] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19779] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19778] <... futex resumed>)        = 0
[pid 19779] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19778] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19779] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19779] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19778] <... futex resumed>)        = 0
[pid 19779] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19778] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19779] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19778] <... futex resumed>)        = 0
[pid 19779] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19778] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19779] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19779] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19778] <... futex resumed>)        = 0
[pid 19779] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19778] exit_group(0 <unfinished ...>
[pid 19779] <... futex resumed>)        = ?
[pid 19778] <... exit_group resumed>)   = ?
[pid 19779] +++ exited with 0 +++
[pid 19778] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19778, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19780 attached
, child_tidptr=0x55557c828690) = 19780
[pid 19780] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19780] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19780] setpgid(0, 0)               = 0
[pid 19780] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19780] write(3, "1000", 4)         = 4
[pid 19780] close(3)                    = 0
executing program
[pid 19780] write(1, "executing program\n", 18) = 18
[pid 19780] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19780] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19780] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19780] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19780] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19780] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19780] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19781]}, 88) = 19781
[pid 19780] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19780] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19780] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19781 attached
 <unfinished ...>
[pid 19781] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19781] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19781] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19781] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19780] <... futex resumed>)        = 0
[pid 19780] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19780] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19781] <... futex resumed>)        = 1
[pid 19781] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19781] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19780] <... futex resumed>)        = 0
[pid 19780] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19780] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19781] <... futex resumed>)        = 1
[pid 19781] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19781] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19780] <... futex resumed>)        = 0
[pid 19780] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19780] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19781] <... futex resumed>)        = 1
[pid 19781] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19781] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19780] <... futex resumed>)        = 0
[pid 19780] exit_group(0)               = ?
[pid 19781] <... futex resumed>)        = ?
[pid 19781] +++ exited with 0 +++
[pid 19780] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19780, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19782
./strace-static-x86_64: Process 19782 attached
[pid 19782] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19782] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19782] setpgid(0, 0)               = 0
[pid 19782] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19782] write(3, "1000", 4)         = 4
[pid 19782] close(3)                    = 0
[pid 19782] write(1, "executing program\n", 18executing program
) = 18
[pid 19782] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19782] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19782] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19782] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19782] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19782] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19782] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19783]}, 88) = 19783
[pid 19782] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19782] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19782] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19783 attached
 <unfinished ...>
[pid 19783] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19783] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19783] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19783] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19782] <... futex resumed>)        = 0
[pid 19783] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19782] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19782] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19783] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19783] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19782] <... futex resumed>)        = 0
[pid 19783] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19782] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19782] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19783] <... futex resumed>)        = 0
[pid 19783] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19783] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19782] <... futex resumed>)        = 0
[pid 19782] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19782] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19783] <... futex resumed>)        = 1
[pid 19783] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19783] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19782] <... futex resumed>)        = 0
[pid 19782] exit_group(0)               = ?
[pid 19783] <... futex resumed>)        = ?
[pid 19783] +++ exited with 0 +++
[pid 19782] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19782, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19784
./strace-static-x86_64: Process 19784 attached
[pid 19784] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19784] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19784] setpgid(0, 0)               = 0
[pid 19784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19784] write(3, "1000", 4)         = 4
[pid 19784] close(3)                    = 0
executing program
[pid 19784] write(1, "executing program\n", 18) = 18
[pid 19784] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19784] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19784] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19784] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19784] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19784] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19784] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19785 attached
 => {parent_tid=[19785]}, 88) = 19785
[pid 19784] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19784] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19784] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19785] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19785] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19785] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19785] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19784] <... futex resumed>)        = 0
[pid 19784] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19784] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19785] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19785] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19784] <... futex resumed>)        = 0
[pid 19784] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19784] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19785] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19785] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19784] <... futex resumed>)        = 0
[pid 19784] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19784] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19785] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19785] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19784] <... futex resumed>)        = 0
[pid 19784] exit_group(0)               = ?
[pid 19785] +++ exited with 0 +++
[pid 19784] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19784, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19786
./strace-static-x86_64: Process 19786 attached
[pid 19786] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19786] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19786] setpgid(0, 0)               = 0
[pid 19786] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19786] write(3, "1000", 4)         = 4
[pid 19786] close(3)                    = 0
[pid 19786] write(1, "executing program\n", 18executing program
) = 18
[pid 19786] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19786] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19786] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19786] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19786] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19786] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19786] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19787]}, 88) = 19787
[pid 19786] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19786] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19786] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19787 attached
 <unfinished ...>
[pid 19787] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19787] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19787] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19787] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19786] <... futex resumed>)        = 0
[pid 19786] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19786] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19787] <... futex resumed>)        = 1
[pid 19787] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19787] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19786] <... futex resumed>)        = 0
[pid 19786] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19786] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19787] <... futex resumed>)        = 1
[pid 19787] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19787] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19786] <... futex resumed>)        = 0
[pid 19786] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19786] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19787] <... futex resumed>)        = 1
[pid 19787] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19787] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19786] <... futex resumed>)        = 0
[pid 19786] exit_group(0 <unfinished ...>
[pid 19787] <... futex resumed>)        = 1
[pid 19786] <... exit_group resumed>)   = ?
[pid 19787] +++ exited with 0 +++
[pid 19786] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19786, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19788
./strace-static-x86_64: Process 19788 attached
[pid 19788] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19788] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19788] setpgid(0, 0)               = 0
[pid 19788] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19788] write(3, "1000", 4)         = 4
[pid 19788] close(3)                    = 0
[pid 19788] write(1, "executing program\n", 18executing program
) = 18
[pid 19788] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19788] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19788] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19788] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19788] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19788] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19788] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19789 attached
 <unfinished ...>
[pid 19789] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19789] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19789] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19788] <... clone3 resumed> => {parent_tid=[19789]}, 88) = 19789
[pid 19788] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19788] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19788] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19789] <... futex resumed>)        = 0
[pid 19789] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19789] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19788] <... futex resumed>)        = 0
[pid 19788] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19788] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19789] <... futex resumed>)        = 1
[pid 19789] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19789] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19788] <... futex resumed>)        = 0
[pid 19788] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19788] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19789] <... futex resumed>)        = 1
[pid 19789] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19789] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19788] <... futex resumed>)        = 0
[pid 19788] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19788] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19789] <... futex resumed>)        = 1
[pid 19789] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19789] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19788] <... futex resumed>)        = 0
[pid 19788] exit_group(0)               = ?
[pid 19789] <... futex resumed>)        = ?
[pid 19789] +++ exited with 0 +++
[pid 19788] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19788, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19790 attached
 <unfinished ...>
[pid 19790] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19790
[pid 19790] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19790] setpgid(0, 0)               = 0
[pid 19790] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19790] write(3, "1000", 4)         = 4
[pid 19790] close(3)                    = 0
executing program
[pid 19790] write(1, "executing program\n", 18) = 18
[pid 19790] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19790] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19790] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19790] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19790] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19790] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19790] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19791]}, 88) = 19791
./strace-static-x86_64: Process 19791 attached
[pid 19790] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19790] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19790] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19791] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19791] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19791] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19791] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19791] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19790] <... futex resumed>)        = 0
[pid 19790] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19791] <... futex resumed>)        = 0
[pid 19791] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19791] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19790] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19791] <... futex resumed>)        = 0
[pid 19791] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19790] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19790] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19791] <... futex resumed>)        = 0
[pid 19791] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19791] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19791] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19790] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19790] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19791] <... futex resumed>)        = 0
[pid 19791] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19790] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19791] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19791] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19791] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19790] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19790] exit_group(0)               = ?
[pid 19791] <... futex resumed>)        = ?
[pid 19791] +++ exited with 0 +++
[pid 19790] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19790, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19792
./strace-static-x86_64: Process 19792 attached
[pid 19792] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19792] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19792] setpgid(0, 0)               = 0
[pid 19792] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19792] write(3, "1000", 4)         = 4
[pid 19792] close(3executing program
)                    = 0
[pid 19792] write(1, "executing program\n", 18) = 18
[pid 19792] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19792] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19792] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19792] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19792] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19792] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19792] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19793 attached
 => {parent_tid=[19793]}, 88) = 19793
[pid 19792] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19792] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19792] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19793] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19793] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19793] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19793] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19792] <... futex resumed>)        = 0
[pid 19792] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19792] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19793] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19793] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19792] <... futex resumed>)        = 0
[pid 19792] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19792] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19793] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19793] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19792] <... futex resumed>)        = 0
[pid 19792] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19792] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19793] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19793] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19792] <... futex resumed>)        = 0
[pid 19792] exit_group(0)               = ?
[pid 19793] +++ exited with 0 +++
[pid 19792] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19792, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19794
./strace-static-x86_64: Process 19794 attached
[pid 19794] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19794] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19794] setpgid(0, 0)               = 0
[pid 19794] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19794] write(3, "1000", 4)         = 4
[pid 19794] close(3)                    = 0
executing program
[pid 19794] write(1, "executing program\n", 18) = 18
[pid 19794] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19794] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19794] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19794] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19794] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19794] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19794] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19795]}, 88) = 19795
[pid 19794] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19794] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19794] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19795 attached
 <unfinished ...>
[pid 19795] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19795] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19795] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19795] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19794] <... futex resumed>)        = 0
[pid 19794] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19794] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19795] <... futex resumed>)        = 1
[pid 19795] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19795] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19794] <... futex resumed>)        = 0
[pid 19794] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19794] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19795] <... futex resumed>)        = 1
[pid 19795] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19795] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19794] <... futex resumed>)        = 0
[pid 19794] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19794] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19795] <... futex resumed>)        = 1
[pid 19795] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19795] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19794] <... futex resumed>)        = 0
[pid 19794] exit_group(0)               = ?
[pid 19795] <... futex resumed>)        = ?
[pid 19795] +++ exited with 0 +++
[pid 19794] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19794, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19796
./strace-static-x86_64: Process 19796 attached
[pid 19796] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19796] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19796] setpgid(0, 0)               = 0
[pid 19796] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19796] write(3, "1000", 4)         = 4
[pid 19796] close(3)                    = 0
[pid 19796] write(1, "executing program\n", 18executing program
) = 18
[pid 19796] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19796] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19796] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19796] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19796] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19796] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19796] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19797 attached
 => {parent_tid=[19797]}, 88) = 19797
[pid 19797] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19796] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19796] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19797] <... set_robust_list resumed>) = 0
[pid 19796] <... futex resumed>)        = 0
[pid 19797] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19796] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19797] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19797] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19797] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19796] <... futex resumed>)        = 0
[pid 19796] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19796] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19797] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19797] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19796] <... futex resumed>)        = 0
[pid 19796] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19796] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19797] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19797] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19796] <... futex resumed>)        = 0
[pid 19796] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19796] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19797] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19797] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19796] <... futex resumed>)        = 0
[pid 19796] exit_group(0)               = ?
[pid 19797] +++ exited with 0 +++
[pid 19796] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19796, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19798 attached
, child_tidptr=0x55557c828690) = 19798
[pid 19798] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19798] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19798] setpgid(0, 0)               = 0
[pid 19798] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19798] write(3, "1000", 4)         = 4
[pid 19798] close(3)                    = 0
[pid 19798] write(1, "executing program\n", 18executing program
) = 18
[pid 19798] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19798] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19798] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19798] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19798] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19798] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19798] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19799 attached
 => {parent_tid=[19799]}, 88) = 19799
[pid 19798] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19798] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19798] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19799] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19799] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19799] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19799] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19798] <... futex resumed>)        = 0
[pid 19798] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19798] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19799] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19799] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19798] <... futex resumed>)        = 0
[pid 19798] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19798] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19799] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19799] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19798] <... futex resumed>)        = 0
[pid 19798] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19798] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19799] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19799] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19798] <... futex resumed>)        = 0
[pid 19798] exit_group(0)               = ?
[pid 19799] +++ exited with 0 +++
[pid 19798] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19798, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19800
./strace-static-x86_64: Process 19800 attached
[pid 19800] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19800] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19800] setpgid(0, 0)               = 0
[pid 19800] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19800] write(3, "1000", 4)         = 4
[pid 19800] close(3)                    = 0
executing program
[pid 19800] write(1, "executing program\n", 18) = 18
[pid 19800] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19800] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19800] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19800] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19800] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19800] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19800] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19801 attached
 <unfinished ...>
[pid 19801] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19801] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19801] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19800] <... clone3 resumed> => {parent_tid=[19801]}, 88) = 19801
[pid 19800] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19800] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19800] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19801] <... futex resumed>)        = 0
[pid 19801] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19801] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19801] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19800] <... futex resumed>)        = 0
[pid 19800] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19800] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19801] <... futex resumed>)        = 0
[pid 19801] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19801] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19800] <... futex resumed>)        = 0
[pid 19800] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19800] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19801] <... futex resumed>)        = 1
[pid 19801] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19801] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19800] <... futex resumed>)        = 0
[pid 19800] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19800] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19801] <... futex resumed>)        = 1
[pid 19801] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19801] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19800] <... futex resumed>)        = 0
[pid 19800] exit_group(0)               = ?
[pid 19801] <... futex resumed>)        = ?
[pid 19801] +++ exited with 0 +++
[pid 19800] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19800, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19802 attached
, child_tidptr=0x55557c828690) = 19802
[pid 19802] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19802] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19802] setpgid(0, 0)               = 0
[pid 19802] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19802] write(3, "1000", 4)         = 4
[pid 19802] close(3)                    = 0
[pid 19802] write(1, "executing program\n", 18executing program
) = 18
[pid 19802] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19802] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19802] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19802] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19802] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19802] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19802] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19803 attached
 <unfinished ...>
[pid 19803] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19803] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19803] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19802] <... clone3 resumed> => {parent_tid=[19803]}, 88) = 19803
[pid 19802] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19802] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19802] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19803] <... futex resumed>)        = 0
[pid 19803] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19803] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19803] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19802] <... futex resumed>)        = 0
[pid 19802] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19802] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19803] <... futex resumed>)        = 0
[pid 19803] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19803] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19802] <... futex resumed>)        = 0
[pid 19802] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19802] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19803] <... futex resumed>)        = 1
[pid 19803] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19803] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19802] <... futex resumed>)        = 0
[pid 19802] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19802] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19803] <... futex resumed>)        = 1
[pid 19803] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19803] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19802] <... futex resumed>)        = 0
[pid 19802] exit_group(0)               = ?
[pid 19803] <... futex resumed>)        = ?
[pid 19803] +++ exited with 0 +++
[pid 19802] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19802, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19804
./strace-static-x86_64: Process 19804 attached
[pid 19804] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19804] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19804] setpgid(0, 0)               = 0
[pid 19804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19804] write(3, "1000", 4)         = 4
[pid 19804] close(3)                    = 0
[pid 19804] write(1, "executing program\n", 18executing program
) = 18
[pid 19804] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19804] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19804] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19804] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19804] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19804] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19804] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19805 attached
 => {parent_tid=[19805]}, 88) = 19805
[pid 19804] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19804] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19804] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19805] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19805] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19805] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19805] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19804] <... futex resumed>)        = 0
[pid 19805] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19804] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19805] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19804] <... futex resumed>)        = 0
[pid 19805] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19804] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19805] <... futex resumed>)        = 0
[pid 19804] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19805] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19804] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19805] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19804] <... futex resumed>)        = 0
[pid 19805] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19804] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19805] <... futex resumed>)        = 0
[pid 19804] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19805] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19804] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19805] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19804] <... futex resumed>)        = 0
[pid 19805] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19804] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19805] <... futex resumed>)        = 0
[pid 19804] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19805] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19804] exit_group(0 <unfinished ...>
[pid 19805] <... futex resumed>)        = ?
[pid 19804] <... exit_group resumed>)   = ?
[pid 19805] +++ exited with 0 +++
[pid 19804] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19804, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19806 attached
 <unfinished ...>
[pid 19806] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19806
[pid 19806] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19806] setpgid(0, 0)               = 0
[pid 19806] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19806] write(3, "1000", 4)         = 4
[pid 19806] close(3)                    = 0
executing program
[pid 19806] write(1, "executing program\n", 18) = 18
[pid 19806] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19806] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19806] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19806] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19806] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19806] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19806] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19807]}, 88) = 19807
[pid 19806] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19806] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19806] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19807 attached
 <unfinished ...>
[pid 19807] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19807] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19807] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19807] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19806] <... futex resumed>)        = 0
[pid 19806] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19807] <... futex resumed>)        = 1
[pid 19806] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19807] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19807] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19806] <... futex resumed>)        = 0
[pid 19806] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19806] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19807] <... futex resumed>)        = 1
[pid 19807] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19807] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19806] <... futex resumed>)        = 0
[pid 19806] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19806] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19807] <... futex resumed>)        = 1
[pid 19807] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19807] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19806] <... futex resumed>)        = 0
[pid 19806] exit_group(0)               = ?
[pid 19807] <... futex resumed>)        = ?
[pid 19807] +++ exited with 0 +++
[pid 19806] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19806, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19808
./strace-static-x86_64: Process 19808 attached
[pid 19808] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19808] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19808] setpgid(0, 0)               = 0
[pid 19808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19808] write(3, "1000", 4)         = 4
[pid 19808] close(3)                    = 0
[pid 19808] write(1, "executing program\n", 18executing program
) = 18
[pid 19808] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19808] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19808] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19808] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19808] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19808] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19808] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19809 attached
 => {parent_tid=[19809]}, 88) = 19809
[pid 19808] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19808] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19808] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19809] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19809] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19809] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19809] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19808] <... futex resumed>)        = 0
[pid 19808] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19808] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19809] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19809] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19808] <... futex resumed>)        = 0
[pid 19808] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19808] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19809] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19809] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19808] <... futex resumed>)        = 0
[pid 19808] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19808] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19809] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19809] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19808] <... futex resumed>)        = 0
[pid 19808] exit_group(0)               = ?
[pid 19809] +++ exited with 0 +++
[pid 19808] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19808, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19810
./strace-static-x86_64: Process 19810 attached
[pid 19810] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19810] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19810] setpgid(0, 0)               = 0
[pid 19810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19810] write(3, "1000", 4)         = 4
executing program
[pid 19810] close(3)                    = 0
[pid 19810] write(1, "executing program\n", 18) = 18
[pid 19810] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19810] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19810] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19810] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19810] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19810] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19810] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19811]}, 88) = 19811
[pid 19810] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 19811 attached
NULL, 8) = 0
[pid 19811] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19811] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19811] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19810] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19811] <... futex resumed>)        = 0
[pid 19811] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19810] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19811] <... 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 19811] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19810] <... futex resumed>)        = 0
[pid 19810] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19810] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19811] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19811] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19810] <... futex resumed>)        = 0
[pid 19810] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19810] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19811] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19811] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19810] <... futex resumed>)        = 0
[pid 19810] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19810] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19811] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19811] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19810] <... futex resumed>)        = 0
[pid 19810] exit_group(0)               = ?
[pid 19811] +++ exited with 0 +++
[pid 19810] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19810, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19812 attached
, child_tidptr=0x55557c828690) = 19812
[pid 19812] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19812] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19812] setpgid(0, 0)               = 0
[pid 19812] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19812] write(3, "1000", 4)         = 4
[pid 19812] close(3)                    = 0
[pid 19812] write(1, "executing program\n", 18executing program
) = 18
[pid 19812] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19812] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19812] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19812] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19812] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19812] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19812] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19813]}, 88) = 19813
./strace-static-x86_64: Process 19813 attached
[pid 19812] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19813] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19812] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19813] <... set_robust_list resumed>) = 0
[pid 19812] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19813] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19812] <... futex resumed>)        = 0
[pid 19813] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19812] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19813] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19813] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19813] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19812] <... futex resumed>)        = 0
[pid 19812] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19813] <... futex resumed>)        = 0
[pid 19813] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19812] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19813] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19812] <... futex resumed>)        = 0
[pid 19812] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19812] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19813] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19813] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19812] <... futex resumed>)        = 0
[pid 19812] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19812] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19813] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19813] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19813] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19812] <... futex resumed>)        = 0
[pid 19812] exit_group(0)               = ?
[pid 19813] <... futex resumed>)        = ?
[pid 19813] +++ exited with 0 +++
[pid 19812] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19812, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19814
./strace-static-x86_64: Process 19814 attached
[pid 19814] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19814] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19814] setpgid(0, 0)               = 0
[pid 19814] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19814] write(3, "1000", 4)         = 4
[pid 19814] close(3)                    = 0
[pid 19814] write(1, "executing program\n", 18executing program
) = 18
[pid 19814] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19814] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19814] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19814] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19814] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19814] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19814] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19815 attached
 => {parent_tid=[19815]}, 88) = 19815
[pid 19814] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19814] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19814] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19815] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19815] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19815] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19815] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19814] <... futex resumed>)        = 0
[pid 19814] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19814] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19815] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19815] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19814] <... futex resumed>)        = 0
[pid 19814] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19814] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19815] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19815] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19814] <... futex resumed>)        = 0
[pid 19815] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19814] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19815] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19814] <... futex resumed>)        = 0
[pid 19815] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19814] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19815] <... futex resumed>)        = 0
[pid 19814] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19815] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19814] exit_group(0 <unfinished ...>
[pid 19815] <... futex resumed>)        = ?
[pid 19814] <... exit_group resumed>)   = ?
[pid 19815] +++ exited with 0 +++
[pid 19814] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19814, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19816 attached
 <unfinished ...>
[pid 19816] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19816] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19816] setpgid(0, 0)               = 0
[pid 19816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19816
[pid 19816] <... openat resumed>)       = 3
[pid 19816] write(3, "1000", 4)         = 4
[pid 19816] close(3)                    = 0
executing program
[pid 19816] write(1, "executing program\n", 18) = 18
[pid 19816] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19816] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19816] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19816] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19816] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19816] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19816] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19817 attached
 <unfinished ...>
[pid 19817] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19817] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19816] <... clone3 resumed> => {parent_tid=[19817]}, 88) = 19817
[pid 19816] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19816] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19816] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19817] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19817] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19817] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19816] <... futex resumed>)        = 0
[pid 19816] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19816] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19817] <... futex resumed>)        = 1
[pid 19817] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19817] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19816] <... futex resumed>)        = 0
[pid 19816] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19816] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19817] <... futex resumed>)        = 1
[pid 19817] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19817] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19816] <... futex resumed>)        = 0
[pid 19816] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19816] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19817] <... futex resumed>)        = 1
[pid 19817] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19817] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19817] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19816] <... futex resumed>)        = 0
[pid 19816] exit_group(0)               = ?
[pid 19817] <... futex resumed>)        = ?
[pid 19817] +++ exited with 0 +++
[pid 19816] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19816, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19818
./strace-static-x86_64: Process 19818 attached
[pid 19818] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19818] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19818] setpgid(0, 0)               = 0
[pid 19818] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19818] write(3, "1000", 4)         = 4
[pid 19818] close(3)                    = 0
[pid 19818] write(1, "executing program\n", 18executing program
) = 18
[pid 19818] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19818] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19818] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19818] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19818] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19818] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19818] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19819 attached
 => {parent_tid=[19819]}, 88) = 19819
[pid 19819] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19819] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19819] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19818] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19818] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19819] <... futex resumed>)        = 0
[pid 19819] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19818] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19819] <... 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 19819] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19818] <... futex resumed>)        = 0
[pid 19818] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19819] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19818] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19819] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19819] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19818] <... futex resumed>)        = 0
[pid 19818] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19818] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19819] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19819] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19818] <... futex resumed>)        = 0
[pid 19818] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19818] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19819] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19819] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19818] <... futex resumed>)        = 0
[pid 19818] exit_group(0 <unfinished ...>
[pid 19819] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19818] <... exit_group resumed>)   = ?
[pid 19819] <... futex resumed>)        = ?
[pid 19819] +++ exited with 0 +++
[pid 19818] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19818, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19820 attached
 <unfinished ...>
[pid 19820] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19820] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19820] setpgid(0, 0)               = 0
[pid 19820] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19820
[pid 19820] <... openat resumed>)       = 3
[pid 19820] write(3, "1000", 4)         = 4
[pid 19820] close(3)                    = 0
executing program
[pid 19820] write(1, "executing program\n", 18) = 18
[pid 19820] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19820] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19820] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19820] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19820] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19820] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19820] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19821 attached
 => {parent_tid=[19821]}, 88) = 19821
[pid 19820] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19820] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19820] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19821] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19821] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19821] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19821] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19820] <... futex resumed>)        = 0
[pid 19820] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19820] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19821] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19821] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19820] <... futex resumed>)        = 0
[pid 19820] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19820] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19821] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19821] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19820] <... futex resumed>)        = 0
[pid 19820] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19820] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19821] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19821] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19820] <... futex resumed>)        = 0
[pid 19820] exit_group(0)               = ?
[pid 19821] +++ exited with 0 +++
[pid 19820] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19820, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19822 attached
, child_tidptr=0x55557c828690) = 19822
[pid 19822] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19822] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19822] setpgid(0, 0)               = 0
[pid 19822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19822] write(3, "1000", 4)         = 4
[pid 19822] close(3)                    = 0
executing program
[pid 19822] write(1, "executing program\n", 18) = 18
[pid 19822] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19822] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19822] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19822] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19822] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19822] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19822] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19823]}, 88) = 19823
[pid 19822] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19822] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19822] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19823 attached
 <unfinished ...>
[pid 19823] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19823] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19823] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19823] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19822] <... futex resumed>)        = 0
[pid 19822] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19822] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19823] <... futex resumed>)        = 1
[pid 19823] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19823] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19822] <... futex resumed>)        = 0
[pid 19822] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19822] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19823] <... futex resumed>)        = 1
[pid 19823] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19823] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19822] <... futex resumed>)        = 0
[pid 19822] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19822] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19823] <... futex resumed>)        = 1
[pid 19823] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19823] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19822] <... futex resumed>)        = 0
[pid 19822] exit_group(0)               = ?
[pid 19823] <... futex resumed>)        = ?
[pid 19823] +++ exited with 0 +++
[pid 19822] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19822, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19824
./strace-static-x86_64: Process 19824 attached
[pid 19824] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19824] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19824] setpgid(0, 0)               = 0
[pid 19824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19824] write(3, "1000", 4)         = 4
[pid 19824] close(3)                    = 0
executing program
[pid 19824] write(1, "executing program\n", 18) = 18
[pid 19824] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19824] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19824] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19824] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19824] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19824] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19824] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19825]}, 88) = 19825
[pid 19824] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19824] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19824] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19825 attached
 <unfinished ...>
[pid 19825] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19825] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19825] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19825] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19824] <... futex resumed>)        = 0
[pid 19824] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19824] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19825] <... futex resumed>)        = 1
[pid 19825] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19825] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19824] <... futex resumed>)        = 0
[pid 19824] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19824] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19825] <... futex resumed>)        = 1
[pid 19825] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19825] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19824] <... futex resumed>)        = 0
[pid 19824] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19824] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19825] <... futex resumed>)        = 1
[pid 19825] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19825] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19824] <... futex resumed>)        = 0
[pid 19824] exit_group(0)               = ?
[pid 19825] <... futex resumed>)        = ?
[pid 19825] +++ exited with 0 +++
[pid 19824] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19824, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19826
./strace-static-x86_64: Process 19826 attached
[pid 19826] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19826] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19826] setpgid(0, 0)               = 0
[pid 19826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19826] write(3, "1000", 4)         = 4
[pid 19826] close(3)                    = 0
[pid 19826] write(1, "executing program\n", 18executing program
) = 18
[pid 19826] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19826] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19826] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19826] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19826] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19826] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19826] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19827 attached
 => {parent_tid=[19827]}, 88) = 19827
[pid 19826] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19826] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19826] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19827] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19827] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19827] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19827] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19826] <... futex resumed>)        = 0
[pid 19826] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19826] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19827] <... futex resumed>)        = 1
[pid 19827] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19827] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19826] <... futex resumed>)        = 0
[pid 19826] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19826] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19827] <... futex resumed>)        = 1
[pid 19827] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19827] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19826] <... futex resumed>)        = 0
[pid 19826] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19826] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19827] <... futex resumed>)        = 1
[pid 19827] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19827] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19826] <... futex resumed>)        = 0
[pid 19826] exit_group(0)               = ?
[pid 19827] <... futex resumed>)        = ?
[pid 19827] +++ exited with 0 +++
[pid 19826] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19826, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19828 attached
 <unfinished ...>
[pid 19828] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19828
[pid 19828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19828] setpgid(0, 0)               = 0
[pid 19828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19828] write(3, "1000", 4)         = 4
[pid 19828] close(3)                    = 0
[pid 19828] write(1, "executing program\n", 18executing program
) = 18
[pid 19828] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19828] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19828] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19828] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19828] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19828] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19828] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19829 attached
 => {parent_tid=[19829]}, 88) = 19829
[pid 19828] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19828] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19828] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19829] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19829] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19829] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19829] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19828] <... futex resumed>)        = 0
[pid 19828] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19828] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19829] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19829] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19828] <... futex resumed>)        = 0
[pid 19828] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19828] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19829] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19829] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19828] <... futex resumed>)        = 0
[pid 19828] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19828] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19829] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19829] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19828] <... futex resumed>)        = 0
[pid 19828] exit_group(0)               = ?
[pid 19829] +++ exited with 0 +++
[pid 19828] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19828, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19830
./strace-static-x86_64: Process 19830 attached
[pid 19830] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19830] setpgid(0, 0)               = 0
[pid 19830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19830] write(3, "1000", 4)         = 4
[pid 19830] close(3)                    = 0
[pid 19830] write(1, "executing program\n", 18executing program
) = 18
[pid 19830] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19830] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19830] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19830] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19830] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19830] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19830] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19831 attached
 => {parent_tid=[19831]}, 88) = 19831
[pid 19831] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19830] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19831] <... set_robust_list resumed>) = 0
[pid 19830] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19831] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19830] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19831] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19830] <... futex resumed>)        = 0
[pid 19831] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19830] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19831] <... 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 19831] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19830] <... futex resumed>)        = 0
[pid 19830] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19830] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19831] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19831] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19830] <... futex resumed>)        = 0
[pid 19830] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19830] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19831] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19831] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19830] <... futex resumed>)        = 0
[pid 19830] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19830] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19831] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19831] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19830] <... futex resumed>)        = 0
[pid 19831] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19830] exit_group(0 <unfinished ...>
[pid 19831] <... futex resumed>)        = ?
[pid 19830] <... exit_group resumed>)   = ?
[pid 19831] +++ exited with 0 +++
[pid 19830] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19830, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19832 attached
, child_tidptr=0x55557c828690) = 19832
[pid 19832] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19832] setpgid(0, 0)               = 0
[pid 19832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19832] write(3, "1000", 4)         = 4
executing program
[pid 19832] close(3)                    = 0
[pid 19832] write(1, "executing program\n", 18) = 18
[pid 19832] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19832] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19832] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19832] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19832] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19832] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19832] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19833]}, 88) = 19833
./strace-static-x86_64: Process 19833 attached
[pid 19833] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19832] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19833] <... set_robust_list resumed>) = 0
[pid 19832] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19833] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19832] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19833] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19832] <... futex resumed>)        = 0
[pid 19833] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19832] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19833] <... 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 19833] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19832] <... futex resumed>)        = 0
[pid 19833] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19832] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19833] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19833] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19832] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19833] <... futex resumed>)        = 0
[pid 19832] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19833] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19832] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19833] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19832] <... futex resumed>)        = 0
[pid 19833] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19832] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19833] <... futex resumed>)        = 0
[pid 19832] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19833] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19832] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19833] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19832] <... futex resumed>)        = 0
[pid 19833] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19832] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19833] <... futex resumed>)        = 0
[pid 19832] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19833] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19832] exit_group(0 <unfinished ...>
[pid 19833] <... futex resumed>)        = ?
[pid 19832] <... exit_group resumed>)   = ?
[pid 19833] +++ exited with 0 +++
[pid 19832] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19832, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19834
./strace-static-x86_64: Process 19834 attached
[pid 19834] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19834] setpgid(0, 0)               = 0
[pid 19834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19834] write(3, "1000", 4)         = 4
executing program
[pid 19834] close(3)                    = 0
[pid 19834] write(1, "executing program\n", 18) = 18
[pid 19834] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19834] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19834] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19834] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19834] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19834] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19834] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19835]}, 88) = 19835
./strace-static-x86_64: Process 19835 attached
[pid 19834] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19834] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19834] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19835] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19835] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19835] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19835] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19834] <... futex resumed>)        = 0
[pid 19834] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19834] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19835] <... futex resumed>)        = 1
[pid 19835] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19835] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19834] <... futex resumed>)        = 0
[pid 19834] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19834] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19835] <... futex resumed>)        = 1
[pid 19835] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19835] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19834] <... futex resumed>)        = 0
[pid 19834] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19834] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19835] <... futex resumed>)        = 1
[pid 19835] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19835] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19834] <... futex resumed>)        = 0
[pid 19834] exit_group(0)               = ?
[pid 19835] <... futex resumed>)        = ?
[pid 19835] +++ exited with 0 +++
[pid 19834] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19834, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19836
./strace-static-x86_64: Process 19836 attached
[pid 19836] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19836] setpgid(0, 0)               = 0
[pid 19836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19836] write(3, "1000", 4)         = 4
[pid 19836] close(3executing program
)                    = 0
[pid 19836] write(1, "executing program\n", 18) = 18
[pid 19836] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19836] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19836] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19836] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19836] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19836] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19836] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19837 attached
 => {parent_tid=[19837]}, 88) = 19837
[pid 19836] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19837] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19836] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19837] <... set_robust_list resumed>) = 0
[pid 19836] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19837] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19836] <... futex resumed>)        = 0
[pid 19837] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19836] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19837] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19837] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19836] <... futex resumed>)        = 0
[pid 19836] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19836] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19837] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19837] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19836] <... futex resumed>)        = 0
[pid 19836] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19836] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19837] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19837] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19836] <... futex resumed>)        = 0
[pid 19836] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19836] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19837] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19837] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19837] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19836] <... futex resumed>)        = 0
[pid 19836] exit_group(0)               = ?
[pid 19837] <... futex resumed>)        = ?
[pid 19837] +++ exited with 0 +++
[pid 19836] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19836, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19838 attached
, child_tidptr=0x55557c828690) = 19838
[pid 19838] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19838] setpgid(0, 0)               = 0
[pid 19838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19838] write(3, "1000", 4)         = 4
[pid 19838] close(3executing program
)                    = 0
[pid 19838] write(1, "executing program\n", 18) = 18
[pid 19838] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19838] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19838] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19838] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19838] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19838] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19838] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19839 attached
 => {parent_tid=[19839]}, 88) = 19839
[pid 19839] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19839] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19839] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19838] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19838] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19839] <... futex resumed>)        = 0
[pid 19839] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19838] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19839] <... 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 19839] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19838] <... futex resumed>)        = 0
[pid 19838] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19839] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19838] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19839] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19839] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19838] <... futex resumed>)        = 0
[pid 19838] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19838] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19839] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19839] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19838] <... futex resumed>)        = 0
[pid 19838] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19838] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19839] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19839] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19839] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19838] <... futex resumed>)        = 0
[pid 19838] exit_group(0)               = ?
[pid 19839] <... futex resumed>)        = ?
[pid 19839] +++ exited with 0 +++
[pid 19838] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19838, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19840 attached
, child_tidptr=0x55557c828690) = 19840
[pid 19840] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19840] setpgid(0, 0)               = 0
[pid 19840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19840] write(3, "1000", 4)         = 4
[pid 19840] close(3)                    = 0
executing program
[pid 19840] write(1, "executing program\n", 18) = 18
[pid 19840] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19840] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19840] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19840] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19840] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19840] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19840] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19841]}, 88) = 19841
[pid 19840] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19840] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19840] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19841 attached
 <unfinished ...>
[pid 19841] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19841] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19841] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19841] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19840] <... futex resumed>)        = 0
[pid 19840] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19840] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19841] <... futex resumed>)        = 1
[pid 19841] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19841] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19840] <... futex resumed>)        = 0
[pid 19840] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19840] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19841] <... futex resumed>)        = 1
[pid 19841] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19841] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19840] <... futex resumed>)        = 0
[pid 19840] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19840] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19841] <... futex resumed>)        = 1
[pid 19841] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19841] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19840] <... futex resumed>)        = 0
[pid 19840] exit_group(0)               = ?
[pid 19841] <... futex resumed>)        = ?
[pid 19841] +++ exited with 0 +++
[pid 19840] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19840, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19842
./strace-static-x86_64: Process 19842 attached
[pid 19842] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19842] setpgid(0, 0)               = 0
[pid 19842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19842] write(3, "1000", 4executing program
)         = 4
[pid 19842] close(3)                    = 0
[pid 19842] write(1, "executing program\n", 18) = 18
[pid 19842] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19842] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19842] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19842] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19842] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19842] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19842] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19843 attached
 => {parent_tid=[19843]}, 88) = 19843
[pid 19842] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19842] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19842] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19843] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19843] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19843] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19843] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19842] <... futex resumed>)        = 0
[pid 19842] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19842] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19843] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19843] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19842] <... futex resumed>)        = 0
[pid 19842] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19842] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19843] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19843] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19842] <... futex resumed>)        = 0
[pid 19842] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19842] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19843] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19843] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19842] <... futex resumed>)        = 0
[pid 19842] exit_group(0)               = ?
[pid 19843] +++ exited with 0 +++
[pid 19842] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19842, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19844
./strace-static-x86_64: Process 19844 attached
[pid 19844] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19844] setpgid(0, 0)               = 0
[pid 19844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19844] write(3, "1000", 4)         = 4
[pid 19844] close(3)                    = 0
[pid 19844] write(1, "executing program\n", 18executing program
) = 18
[pid 19844] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19844] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19844] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19844] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19844] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19844] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19844] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19845 attached
 => {parent_tid=[19845]}, 88) = 19845
[pid 19845] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19845] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19845] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19844] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19844] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19845] <... futex resumed>)        = 0
[pid 19845] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19844] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19845] <... 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 19845] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19844] <... futex resumed>)        = 0
[pid 19844] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19844] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19845] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19845] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19844] <... futex resumed>)        = 0
[pid 19844] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19844] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19845] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19845] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19844] <... futex resumed>)        = 0
[pid 19844] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19844] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19845] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19845] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19844] <... futex resumed>)        = 0
[pid 19844] exit_group(0)               = ?
[pid 19845] +++ exited with 0 +++
[pid 19844] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19844, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19846
./strace-static-x86_64: Process 19846 attached
[pid 19846] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19846] setpgid(0, 0)               = 0
[pid 19846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19846] write(3, "1000", 4)         = 4
[pid 19846] close(3)                    = 0
[pid 19846] write(1, "executing program\n", 18executing program
) = 18
[pid 19846] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19846] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19846] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19846] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19846] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19846] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19846] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19847 attached
 <unfinished ...>
[pid 19847] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19847] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19847] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19846] <... clone3 resumed> => {parent_tid=[19847]}, 88) = 19847
[pid 19846] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19846] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19847] <... futex resumed>)        = 0
[pid 19847] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19846] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19847] <... 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 19847] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19846] <... futex resumed>)        = 0
[pid 19846] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19846] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19847] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19847] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19846] <... futex resumed>)        = 0
[pid 19846] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19846] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19847] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19847] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19846] <... futex resumed>)        = 0
[pid 19846] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19846] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19847] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19847] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19846] <... futex resumed>)        = 0
[pid 19846] exit_group(0)               = ?
[pid 19847] +++ exited with 0 +++
[pid 19846] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19846, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19848
./strace-static-x86_64: Process 19848 attached
[pid 19848] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19848] setpgid(0, 0)               = 0
[pid 19848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19848] write(3, "1000", 4)         = 4
[pid 19848] close(3)                    = 0
[pid 19848] write(1, "executing program\n", 18executing program
) = 18
[pid 19848] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19848] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19848] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19848] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19848] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19848] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19848] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19849]}, 88) = 19849
[pid 19848] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 19849 attached
NULL, 8) = 0
[pid 19848] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19848] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19849] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19849] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19849] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19849] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19848] <... futex resumed>)        = 0
[pid 19848] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19849] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19848] <... futex resumed>)        = 0
[pid 19849] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19848] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19849] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19848] <... futex resumed>)        = 0
[pid 19849] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19848] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19849] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19849] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19849] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19848] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19848] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19849] <... futex resumed>)        = 0
[pid 19848] <... futex resumed>)        = 1
[pid 19849] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19848] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19849] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19849] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19848] <... futex resumed>)        = 0
[pid 19849] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19848] exit_group(0 <unfinished ...>
[pid 19849] <... futex resumed>)        = ?
[pid 19848] <... exit_group resumed>)   = ?
[pid 19849] +++ exited with 0 +++
[pid 19848] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19848, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19850 attached
, child_tidptr=0x55557c828690) = 19850
[pid 19850] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19850] setpgid(0, 0)               = 0
[pid 19850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19850] write(3, "1000", 4)         = 4
executing program
[pid 19850] close(3)                    = 0
[pid 19850] write(1, "executing program\n", 18) = 18
[pid 19850] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19850] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19850] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19850] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19850] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19850] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19850] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19851]}, 88) = 19851
./strace-static-x86_64: Process 19851 attached
[pid 19850] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19851] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19850] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19850] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19851] <... set_robust_list resumed>) = 0
[pid 19851] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19850] <... futex resumed>)        = 0
[pid 19851] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19850] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19851] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19851] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19850] <... futex resumed>)        = 0
[pid 19850] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19850] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19851] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19851] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19850] <... futex resumed>)        = 0
[pid 19850] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19850] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19851] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19851] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19850] <... futex resumed>)        = 0
[pid 19850] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19850] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19851] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19851] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19850] <... futex resumed>)        = 0
[pid 19850] exit_group(0)               = ?
[pid 19851] +++ exited with 0 +++
[pid 19850] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19850, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19852
./strace-static-x86_64: Process 19852 attached
[pid 19852] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19852] setpgid(0, 0)               = 0
[pid 19852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19852] write(3, "1000", 4)         = 4
[pid 19852] close(3)                    = 0
executing program
[pid 19852] write(1, "executing program\n", 18) = 18
[pid 19852] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19852] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19852] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19852] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19852] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19852] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19852] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19853]}, 88) = 19853
[pid 19852] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19852] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19852] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19853 attached
 <unfinished ...>
[pid 19853] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19853] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19853] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19853] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19852] <... futex resumed>)        = 0
[pid 19852] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19852] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19853] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19853] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19852] <... futex resumed>)        = 0
[pid 19852] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19852] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19853] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19853] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19852] <... futex resumed>)        = 0
[pid 19852] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19852] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19853] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19853] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19852] <... futex resumed>)        = 0
[pid 19852] exit_group(0)               = ?
[pid 19853] +++ exited with 0 +++
[pid 19852] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19852, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19854
./strace-static-x86_64: Process 19854 attached
[pid 19854] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19854] setpgid(0, 0)               = 0
[pid 19854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19854] write(3, "1000", 4)         = 4
[pid 19854] close(3)                    = 0
executing program
[pid 19854] write(1, "executing program\n", 18) = 18
[pid 19854] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19854] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19854] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19854] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19854] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19854] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19854] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19855 attached
 <unfinished ...>
[pid 19855] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19854] <... clone3 resumed> => {parent_tid=[19855]}, 88) = 19855
[pid 19855] <... set_robust_list resumed>) = 0
[pid 19854] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19855] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19854] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19855] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19854] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19855] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19854] <... futex resumed>)        = 0
[pid 19854] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19855] <... 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 19855] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19854] <... futex resumed>)        = 0
[pid 19854] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19854] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19855] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19855] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19854] <... futex resumed>)        = 0
[pid 19854] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19854] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19855] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19855] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19854] <... futex resumed>)        = 0
[pid 19854] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19854] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19855] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19855] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19854] <... futex resumed>)        = 0
[pid 19854] exit_group(0)               = ?
[pid 19855] +++ exited with 0 +++
[pid 19854] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19854, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19856 attached
, child_tidptr=0x55557c828690) = 19856
[pid 19856] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19856] setpgid(0, 0)               = 0
[pid 19856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19856] write(3, "1000", 4)         = 4
[pid 19856] close(3)                    = 0
[pid 19856] write(1, "executing program\n", 18executing program
) = 18
[pid 19856] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19856] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19856] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19856] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19856] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19856] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19856] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19857]}, 88) = 19857
[pid 19856] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19856] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19856] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19857 attached
 <unfinished ...>
[pid 19857] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19857] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19857] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19857] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19856] <... futex resumed>)        = 0
[pid 19856] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19856] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19857] <... futex resumed>)        = 1
[pid 19857] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19857] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19856] <... futex resumed>)        = 0
[pid 19856] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19856] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19857] <... futex resumed>)        = 1
[pid 19857] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19857] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19856] <... futex resumed>)        = 0
[pid 19856] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19856] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19857] <... futex resumed>)        = 1
[pid 19857] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19857] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19856] <... futex resumed>)        = 0
[pid 19856] exit_group(0)               = ?
[pid 19857] <... futex resumed>)        = ?
[pid 19857] +++ exited with 0 +++
[pid 19856] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19856, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19858
./strace-static-x86_64: Process 19858 attached
[pid 19858] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19858] setpgid(0, 0)               = 0
[pid 19858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19858] write(3, "1000", 4)         = 4
[pid 19858] close(3)                    = 0
executing program
[pid 19858] write(1, "executing program\n", 18) = 18
[pid 19858] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19858] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19858] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19858] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19858] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19858] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19858] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19859]}, 88) = 19859
[pid 19858] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19858] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19858] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19859 attached
 <unfinished ...>
[pid 19859] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19859] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19859] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19859] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19858] <... futex resumed>)        = 0
[pid 19858] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19858] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19859] <... futex resumed>)        = 1
[pid 19859] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19859] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19858] <... futex resumed>)        = 0
[pid 19858] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19858] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19859] <... futex resumed>)        = 1
[pid 19859] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19859] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19858] <... futex resumed>)        = 0
[pid 19858] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19858] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19859] <... futex resumed>)        = 1
[pid 19859] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19859] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19858] <... futex resumed>)        = 0
[pid 19858] exit_group(0)               = ?
[pid 19859] <... futex resumed>)        = ?
[pid 19859] +++ exited with 0 +++
[pid 19858] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19858, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19860
./strace-static-x86_64: Process 19860 attached
[pid 19860] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19860] setpgid(0, 0)               = 0
[pid 19860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19860] write(3, "1000", 4)         = 4
executing program
[pid 19860] close(3)                    = 0
[pid 19860] write(1, "executing program\n", 18) = 18
[pid 19860] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19860] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19860] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19860] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19860] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19860] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19860] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19861 attached
 => {parent_tid=[19861]}, 88) = 19861
[pid 19861] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19861] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19861] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19860] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19860] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19861] <... futex resumed>)        = 0
[pid 19861] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19860] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19861] <... 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 19861] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19860] <... futex resumed>)        = 0
[pid 19860] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19861] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19860] <... futex resumed>)        = 0
[pid 19861] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19860] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19861] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19860] <... futex resumed>)        = 0
[pid 19860] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19860] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19861] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19861] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19860] <... futex resumed>)        = 0
[pid 19860] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19860] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19861] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19861] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19861] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19860] <... futex resumed>)        = 0
[pid 19860] exit_group(0)               = ?
[pid 19861] <... futex resumed>)        = ?
[pid 19861] +++ exited with 0 +++
[pid 19860] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19860, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19862
./strace-static-x86_64: Process 19862 attached
[pid 19862] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19862] setpgid(0, 0)               = 0
[pid 19862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19862] write(3, "1000", 4)         = 4
[pid 19862] close(3)                    = 0
[pid 19862] write(1, "executing program\n", 18executing program
) = 18
[pid 19862] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19862] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19862] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19862] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19862] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19862] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19862] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19863]}, 88) = 19863
[pid 19862] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19862] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19862] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19863 attached
 <unfinished ...>
[pid 19863] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19863] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19863] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19863] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19862] <... futex resumed>)        = 0
[pid 19862] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19862] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19863] <... futex resumed>)        = 1
[pid 19863] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19863] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19862] <... futex resumed>)        = 0
[pid 19862] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19862] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19863] <... futex resumed>)        = 1
[pid 19863] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19863] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19862] <... futex resumed>)        = 0
[pid 19862] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19862] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19863] <... futex resumed>)        = 1
[pid 19863] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19863] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19862] <... futex resumed>)        = 0
[pid 19862] exit_group(0)               = ?
[pid 19863] <... futex resumed>)        = ?
[pid 19863] +++ exited with 0 +++
[pid 19862] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19862, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19864
./strace-static-x86_64: Process 19864 attached
[pid 19864] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19864] setpgid(0, 0)               = 0
[pid 19864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19864] write(3, "1000", 4)         = 4
[pid 19864] close(3)                    = 0
[pid 19864] write(1, "executing program\n", 18executing program
) = 18
[pid 19864] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19864] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19864] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19864] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19864] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19864] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19864] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19865 attached
 => {parent_tid=[19865]}, 88) = 19865
[pid 19864] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19864] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19864] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19865] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19865] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19865] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19865] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19864] <... futex resumed>)        = 0
[pid 19864] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19864] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19865] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19865] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19864] <... futex resumed>)        = 0
[pid 19864] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19864] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19865] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19865] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19864] <... futex resumed>)        = 0
[pid 19864] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19864] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19865] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19865] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19865] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19864] <... futex resumed>)        = 0
[pid 19864] exit_group(0)               = ?
[pid 19865] <... futex resumed>)        = ?
[pid 19865] +++ exited with 0 +++
[pid 19864] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19864, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19866
./strace-static-x86_64: Process 19866 attached
[pid 19866] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19866] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19866] setpgid(0, 0)               = 0
[pid 19866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19866] write(3, "1000", 4)         = 4
[pid 19866] close(3)                    = 0
executing program
[pid 19866] write(1, "executing program\n", 18) = 18
[pid 19866] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19866] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19866] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19866] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19866] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19866] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19866] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19867 attached
 => {parent_tid=[19867]}, 88) = 19867
[pid 19866] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19866] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19866] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19867] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19867] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19867] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19867] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19866] <... futex resumed>)        = 0
[pid 19866] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19866] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19867] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19867] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19866] <... futex resumed>)        = 0
[pid 19866] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19866] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19867] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19867] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19866] <... futex resumed>)        = 0
[pid 19866] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19866] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19867] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19867] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19866] <... futex resumed>)        = 0
[pid 19866] exit_group(0)               = ?
[pid 19867] +++ exited with 0 +++
[pid 19866] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19866, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19868 attached
, child_tidptr=0x55557c828690) = 19868
[pid 19868] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19868] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19868] setpgid(0, 0)               = 0
[pid 19868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19868] write(3, "1000", 4)         = 4
[pid 19868] close(3)                    = 0
[pid 19868] write(1, "executing program\n", 18executing program
) = 18
[pid 19868] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19868] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19868] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19868] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19868] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19868] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19868] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19869]}, 88) = 19869
[pid 19868] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19868] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19868] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19869 attached
 <unfinished ...>
[pid 19869] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19869] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19869] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19869] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19868] <... futex resumed>)        = 0
[pid 19868] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19868] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19869] <... futex resumed>)        = 1
[pid 19869] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19869] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19868] <... futex resumed>)        = 0
[pid 19868] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19868] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19869] <... futex resumed>)        = 1
[pid 19869] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19869] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19868] <... futex resumed>)        = 0
[pid 19868] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19868] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19869] <... futex resumed>)        = 1
[pid 19869] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19869] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19868] <... futex resumed>)        = 0
[pid 19869] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19868] exit_group(0 <unfinished ...>
[pid 19869] <... futex resumed>)        = ?
[pid 19868] <... exit_group resumed>)   = ?
[pid 19869] +++ exited with 0 +++
[pid 19868] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19868, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19870
./strace-static-x86_64: Process 19870 attached
[pid 19870] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19870] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19870] setpgid(0, 0)               = 0
[pid 19870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19870] write(3, "1000", 4)         = 4
[pid 19870] close(3)                    = 0
executing program
[pid 19870] write(1, "executing program\n", 18) = 18
[pid 19870] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19870] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19870] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19870] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19870] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19870] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19870] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19871 attached
 => {parent_tid=[19871]}, 88) = 19871
[pid 19870] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19870] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19870] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19871] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19871] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19871] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19871] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19870] <... futex resumed>)        = 0
[pid 19870] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19870] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19871] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19871] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19870] <... futex resumed>)        = 0
[pid 19870] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19870] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19871] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19871] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19870] <... futex resumed>)        = 0
[pid 19870] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19870] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19871] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19871] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19871] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19870] <... futex resumed>)        = 0
[pid 19870] exit_group(0)               = ?
[pid 19871] <... futex resumed>)        = ?
[pid 19871] +++ exited with 0 +++
[pid 19870] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19870, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19872
./strace-static-x86_64: Process 19872 attached
[pid 19872] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19872] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19872] setpgid(0, 0)               = 0
[pid 19872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19872] write(3, "1000", 4)         = 4
executing program
[pid 19872] close(3)                    = 0
[pid 19872] write(1, "executing program\n", 18) = 18
[pid 19872] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19872] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19872] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19872] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19872] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19872] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19872] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19873]}, 88) = 19873
./strace-static-x86_64: Process 19873 attached
[pid 19872] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19873] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19872] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19872] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19873] <... set_robust_list resumed>) = 0
[pid 19872] <... futex resumed>)        = 0
[pid 19873] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19873] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19872] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19873] <... 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 19873] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19872] <... futex resumed>)        = 0
[pid 19872] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19872] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19873] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19873] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19872] <... futex resumed>)        = 0
[pid 19873] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19872] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19872] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19873] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19873] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19873] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19872] <... futex resumed>)        = 0
[pid 19872] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19872] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19873] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19873] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19872] <... futex resumed>)        = 0
[pid 19872] exit_group(0)               = ?
[pid 19873] +++ exited with 0 +++
[pid 19872] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19872, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19874
./strace-static-x86_64: Process 19874 attached
[pid 19874] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19874] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19874] setpgid(0, 0)               = 0
[pid 19874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19874] write(3, "1000", 4)         = 4
[pid 19874] close(3executing program
)                    = 0
[pid 19874] write(1, "executing program\n", 18) = 18
[pid 19874] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19874] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19874] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19874] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19874] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19874] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19874] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19875]}, 88) = 19875
[pid 19874] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19874] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 19875 attached
) = 0
[pid 19875] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19874] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19875] <... set_robust_list resumed>) = 0
[pid 19875] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19875] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19875] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19874] <... futex resumed>)        = 0
[pid 19875] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19874] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19875] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19874] <... futex resumed>)        = 0
[pid 19875] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19874] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19875] <... futex resumed>)        = 0
[pid 19874] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19875] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19874] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19875] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19874] <... futex resumed>)        = 0
[pid 19875] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19874] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19875] <... futex resumed>)        = 0
[pid 19874] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19875] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19874] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19875] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19874] <... futex resumed>)        = 0
[pid 19875] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19874] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19875] <... futex resumed>)        = 0
[pid 19874] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19875] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19874] exit_group(0 <unfinished ...>
[pid 19875] <... futex resumed>)        = ?
[pid 19874] <... exit_group resumed>)   = ?
[pid 19875] +++ exited with 0 +++
[pid 19874] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19874, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19876
./strace-static-x86_64: Process 19876 attached
[pid 19876] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19876] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19876] setpgid(0, 0)               = 0
[pid 19876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19876] write(3, "1000", 4)         = 4
[pid 19876] close(3)                    = 0
[pid 19876] write(1, "executing program\n", 18executing program
) = 18
[pid 19876] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19876] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19876] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19876] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19876] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19876] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19876] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19877 attached
 => {parent_tid=[19877]}, 88) = 19877
[pid 19876] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19876] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19876] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19877] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19877] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19877] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19877] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19877] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19876] <... futex resumed>)        = 0
[pid 19876] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19877] <... futex resumed>)        = 0
[pid 19876] <... futex resumed>)        = 1
[pid 19877] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19876] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19877] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19877] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19876] <... futex resumed>)        = 0
[pid 19877] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19876] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19877] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19876] <... futex resumed>)        = 0
[pid 19877] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19876] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19877] <... futex resumed>)        = 0
[pid 19876] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19877] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19876] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19877] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19876] <... futex resumed>)        = 0
[pid 19877] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19876] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19877] <... futex resumed>)        = 0
[pid 19876] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19877] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19876] exit_group(0 <unfinished ...>
[pid 19877] <... futex resumed>)        = ?
[pid 19876] <... exit_group resumed>)   = ?
[pid 19877] +++ exited with 0 +++
[pid 19876] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19876, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19878 attached
, child_tidptr=0x55557c828690) = 19878
[pid 19878] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19878] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19878] setpgid(0, 0)               = 0
[pid 19878] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19878] write(3, "1000", 4)         = 4
[pid 19878] close(3executing program
)                    = 0
[pid 19878] write(1, "executing program\n", 18) = 18
[pid 19878] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19878] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19878] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19878] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19878] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19878] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19878] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19879 attached
 => {parent_tid=[19879]}, 88) = 19879
[pid 19878] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19878] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19878] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19879] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19879] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19879] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19879] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19878] <... futex resumed>)        = 0
[pid 19878] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19878] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19879] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19879] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19878] <... futex resumed>)        = 0
[pid 19878] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19878] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19879] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19879] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19878] <... futex resumed>)        = 0
[pid 19878] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19878] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19879] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19879] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19878] <... futex resumed>)        = 0
[pid 19878] exit_group(0)               = ?
[pid 19879] +++ exited with 0 +++
[pid 19878] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19878, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19880 attached
, child_tidptr=0x55557c828690) = 19880
[pid 19880] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19880] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19880] setpgid(0, 0)               = 0
[pid 19880] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19880] write(3, "1000", 4)         = 4
[pid 19880] close(3executing program
)                    = 0
[pid 19880] write(1, "executing program\n", 18) = 18
[pid 19880] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19880] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19880] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19880] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19880] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19880] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19880] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19881 attached
 => {parent_tid=[19881]}, 88) = 19881
[pid 19880] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19881] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19880] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19880] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19881] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19880] <... futex resumed>)        = 0
[pid 19881] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19880] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19881] <... 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 19881] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19880] <... futex resumed>)        = 0
[pid 19880] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19880] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19881] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19881] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19880] <... futex resumed>)        = 0
[pid 19880] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19880] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19881] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19881] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19880] <... futex resumed>)        = 0
[pid 19880] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19880] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19881] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19881] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19880] <... futex resumed>)        = 0
[pid 19880] exit_group(0)               = ?
[pid 19881] +++ exited with 0 +++
[pid 19880] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19880, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19882 attached
, child_tidptr=0x55557c828690) = 19882
[pid 19882] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19882] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19882] setpgid(0, 0)               = 0
[pid 19882] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19882] write(3, "1000", 4)         = 4
[pid 19882] close(3)                    = 0
executing program
[pid 19882] write(1, "executing program\n", 18) = 18
[pid 19882] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19882] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19882] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19882] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19882] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19882] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19882] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19883 attached
 => {parent_tid=[19883]}, 88) = 19883
[pid 19882] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19882] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19882] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19883] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19883] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19883] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19883] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19882] <... futex resumed>)        = 0
[pid 19882] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19883] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19882] <... futex resumed>)        = 0
[pid 19883] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19882] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19883] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19882] <... futex resumed>)        = 0
[pid 19882] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19882] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19883] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19883] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19882] <... futex resumed>)        = 0
[pid 19882] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19882] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19883] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19883] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19882] <... futex resumed>)        = 0
[pid 19882] exit_group(0)               = ?
[pid 19883] +++ exited with 0 +++
[pid 19882] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19882, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19884 attached
 <unfinished ...>
[pid 19884] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19884
[pid 19884] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19884] setpgid(0, 0)               = 0
[pid 19884] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19884] write(3, "1000", 4)         = 4
executing program
[pid 19884] close(3)                    = 0
[pid 19884] write(1, "executing program\n", 18) = 18
[pid 19884] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19884] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19884] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19884] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19884] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19884] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19884] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19885 attached
 => {parent_tid=[19885]}, 88) = 19885
[pid 19884] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19884] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19884] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19885] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19885] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19885] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19885] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19884] <... futex resumed>)        = 0
[pid 19884] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19884] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19885] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19885] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19884] <... futex resumed>)        = 0
[pid 19885] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19884] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19885] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19884] <... futex resumed>)        = 0
[pid 19885] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19884] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19885] <... futex resumed>)        = 0
[pid 19884] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19885] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19884] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19885] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19884] <... futex resumed>)        = 0
[pid 19885] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19884] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19885] <... futex resumed>)        = 0
[pid 19884] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19885] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19884] exit_group(0 <unfinished ...>
[pid 19885] <... futex resumed>)        = ?
[pid 19884] <... exit_group resumed>)   = ?
[pid 19885] +++ exited with 0 +++
[pid 19884] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19884, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19886
./strace-static-x86_64: Process 19886 attached
[pid 19886] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19886] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19886] setpgid(0, 0)               = 0
[pid 19886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19886] write(3, "1000", 4)         = 4
[pid 19886] close(3)                    = 0
[pid 19886] write(1, "executing program\n", 18executing program
) = 18
[pid 19886] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19886] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19886] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19886] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19886] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19886] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19886] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19887]}, 88) = 19887
[pid 19886] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19886] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19886] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19887 attached
 <unfinished ...>
[pid 19887] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19887] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19887] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19887] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19886] <... futex resumed>)        = 0
[pid 19886] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19886] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19887] <... futex resumed>)        = 1
[pid 19887] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19887] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19886] <... futex resumed>)        = 0
[pid 19886] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19886] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19887] <... futex resumed>)        = 1
[pid 19887] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19887] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19886] <... futex resumed>)        = 0
[pid 19886] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19886] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19887] <... futex resumed>)        = 1
[pid 19887] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19887] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19886] <... futex resumed>)        = 0
[pid 19886] exit_group(0)               = ?
[pid 19887] <... futex resumed>)        = ?
[pid 19887] +++ exited with 0 +++
[pid 19886] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19886, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19888 attached
, child_tidptr=0x55557c828690) = 19888
[pid 19888] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19888] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19888] setpgid(0, 0)               = 0
[pid 19888] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19888] write(3, "1000", 4)         = 4
[pid 19888] close(3)                    = 0
[pid 19888] write(1, "executing program\n", 18executing program
) = 18
[pid 19888] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19888] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19888] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19888] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19888] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19888] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19888] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19889 attached
 => {parent_tid=[19889]}, 88) = 19889
[pid 19888] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19888] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19888] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19889] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19889] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19889] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19889] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19888] <... futex resumed>)        = 0
[pid 19888] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19888] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19889] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19889] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19888] <... futex resumed>)        = 0
[pid 19888] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19888] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19889] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19889] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19888] <... futex resumed>)        = 0
[pid 19888] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19888] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19889] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19889] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19888] <... futex resumed>)        = 0
[pid 19888] exit_group(0)               = ?
[pid 19889] +++ exited with 0 +++
[pid 19888] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19888, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19890
./strace-static-x86_64: Process 19890 attached
[pid 19890] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19890] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19890] setpgid(0, 0)               = 0
[pid 19890] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19890] write(3, "1000", 4executing program
)         = 4
[pid 19890] close(3)                    = 0
[pid 19890] write(1, "executing program\n", 18) = 18
[pid 19890] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19890] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19890] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19890] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19890] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19890] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19890] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19891]}, 88) = 19891
[pid 19890] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19890] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19890] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19891 attached
 <unfinished ...>
[pid 19891] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19891] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19891] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19891] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19890] <... futex resumed>)        = 0
[pid 19890] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19890] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19891] <... futex resumed>)        = 1
[pid 19891] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19891] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19890] <... futex resumed>)        = 0
[pid 19890] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19890] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19891] <... futex resumed>)        = 1
[pid 19891] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19891] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19890] <... futex resumed>)        = 0
[pid 19890] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19890] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19891] <... futex resumed>)        = 1
[pid 19891] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19891] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19890] <... futex resumed>)        = 0
[pid 19890] exit_group(0)               = ?
[pid 19891] <... futex resumed>)        = ?
[pid 19891] +++ exited with 0 +++
[pid 19890] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19890, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19892
./strace-static-x86_64: Process 19892 attached
[pid 19892] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19892] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19892] setpgid(0, 0)               = 0
[pid 19892] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19892] write(3, "1000", 4)         = 4
[pid 19892] close(3executing program
)                    = 0
[pid 19892] write(1, "executing program\n", 18) = 18
[pid 19892] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19892] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19892] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19892] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19892] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19892] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19892] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19893]}, 88) = 19893
[pid 19892] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19892] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19892] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19893 attached
 <unfinished ...>
[pid 19893] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19893] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19893] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19893] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19892] <... futex resumed>)        = 0
[pid 19892] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19892] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19893] <... futex resumed>)        = 1
[pid 19893] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19893] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19892] <... futex resumed>)        = 0
[pid 19892] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19892] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19893] <... futex resumed>)        = 1
[pid 19893] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19893] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19892] <... futex resumed>)        = 0
[pid 19892] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19892] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19893] <... futex resumed>)        = 1
[pid 19893] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19893] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19892] <... futex resumed>)        = 0
[pid 19892] exit_group(0 <unfinished ...>
[pid 19893] <... futex resumed>)        = 1
[pid 19892] <... exit_group resumed>)   = ?
[pid 19893] +++ exited with 0 +++
[pid 19892] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19892, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19894
./strace-static-x86_64: Process 19894 attached
[pid 19894] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19894] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19894] setpgid(0, 0)               = 0
[pid 19894] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19894] write(3, "1000", 4)         = 4
[pid 19894] close(3)                    = 0
executing program
[pid 19894] write(1, "executing program\n", 18) = 18
[pid 19894] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19894] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19894] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19894] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19894] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19894] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19894] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19895]}, 88) = 19895
./strace-static-x86_64: Process 19895 attached
[pid 19894] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19894] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19894] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19895] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19895] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19895] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19895] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19894] <... futex resumed>)        = 0
[pid 19894] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19894] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19895] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19895] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19895] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19894] <... futex resumed>)        = 0
[pid 19894] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19894] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19895] <... futex resumed>)        = 0
[pid 19895] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19895] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19894] <... futex resumed>)        = 0
[pid 19894] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19894] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19895] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19895] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19894] <... futex resumed>)        = 0
[pid 19894] exit_group(0)               = ?
[pid 19895] +++ exited with 0 +++
[pid 19894] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19894, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19896
./strace-static-x86_64: Process 19896 attached
[pid 19896] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19896] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19896] setpgid(0, 0)               = 0
[pid 19896] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19896] write(3, "1000", 4)         = 4
[pid 19896] close(3executing program
)                    = 0
[pid 19896] write(1, "executing program\n", 18) = 18
[pid 19896] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19896] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19896] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19896] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19896] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19896] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19896] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19897 attached
 => {parent_tid=[19897]}, 88) = 19897
[pid 19897] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19896] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19897] <... set_robust_list resumed>) = 0
[pid 19896] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19897] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19896] <... futex resumed>)        = 0
[pid 19897] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19896] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19897] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19897] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19896] <... futex resumed>)        = 0
[pid 19896] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19896] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19897] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19897] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19896] <... futex resumed>)        = 0
[pid 19896] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19896] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19897] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19897] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19896] <... futex resumed>)        = 0
[pid 19896] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19896] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19897] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19897] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19896] <... futex resumed>)        = 0
[pid 19896] exit_group(0)               = ?
[pid 19897] +++ exited with 0 +++
[pid 19896] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19896, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19898
./strace-static-x86_64: Process 19898 attached
[pid 19898] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19898] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19898] setpgid(0, 0)               = 0
[pid 19898] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19898] write(3, "1000", 4)         = 4
[pid 19898] close(3)                    = 0
executing program
[pid 19898] write(1, "executing program\n", 18) = 18
[pid 19898] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19898] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19898] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19898] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19898] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19898] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19898] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19899 attached
 => {parent_tid=[19899]}, 88) = 19899
[pid 19898] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19898] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19898] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19899] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19899] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19899] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19899] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19898] <... futex resumed>)        = 0
[pid 19898] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19899] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19898] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19899] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19899] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19898] <... futex resumed>)        = 0
[pid 19899] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19898] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19899] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19898] <... futex resumed>)        = 0
[pid 19899] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19898] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19899] <... futex resumed>)        = 0
[pid 19898] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19899] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19898] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19899] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19898] <... futex resumed>)        = 0
[pid 19899] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19898] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19899] <... futex resumed>)        = 0
[pid 19898] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19899] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19898] exit_group(0 <unfinished ...>
[pid 19899] <... futex resumed>)        = ?
[pid 19898] <... exit_group resumed>)   = ?
[pid 19899] +++ exited with 0 +++
[pid 19898] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19898, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19900
./strace-static-x86_64: Process 19900 attached
[pid 19900] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19900] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19900] setpgid(0, 0)               = 0
[pid 19900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19900] write(3, "1000", 4executing program
)         = 4
[pid 19900] close(3)                    = 0
[pid 19900] write(1, "executing program\n", 18) = 18
[pid 19900] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19900] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19900] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19900] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19900] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19900] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19900] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19901 attached
 <unfinished ...>
[pid 19901] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19900] <... clone3 resumed> => {parent_tid=[19901]}, 88) = 19901
[pid 19901] <... set_robust_list resumed>) = 0
[pid 19900] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19901] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19900] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19901] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19900] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19901] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19900] <... futex resumed>)        = 0
[pid 19901] <... 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 19900] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19901] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19900] <... futex resumed>)        = 0
[pid 19901] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19900] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19901] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19900] <... futex resumed>)        = 0
[pid 19901] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19900] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19901] <... futex resumed>)        = 0
[pid 19900] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19901] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19900] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19901] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19900] <... futex resumed>)        = 0
[pid 19901] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19900] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19901] <... futex resumed>)        = 0
[pid 19900] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19901] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19900] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19901] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19900] <... futex resumed>)        = 0
[pid 19901] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19900] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19901] <... futex resumed>)        = 0
[pid 19900] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19901] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19900] exit_group(0 <unfinished ...>
[pid 19901] <... futex resumed>)        = ?
[pid 19900] <... exit_group resumed>)   = ?
[pid 19901] +++ exited with 0 +++
[pid 19900] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19900, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19902
./strace-static-x86_64: Process 19902 attached
[pid 19902] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19902] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19902] setpgid(0, 0)               = 0
[pid 19902] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19902] write(3, "1000", 4)         = 4
[pid 19902] close(3)                    = 0
[pid 19902] write(1, "executing program\n", 18executing program
) = 18
[pid 19902] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19902] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19902] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19902] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19902] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19902] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19902] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19903 attached
 => {parent_tid=[19903]}, 88) = 19903
[pid 19902] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19902] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19902] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19903] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19903] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19903] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19903] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19902] <... futex resumed>)        = 0
[pid 19903] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19902] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19903] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19902] <... futex resumed>)        = 0
[pid 19903] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19902] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19903] <... futex resumed>)        = 0
[pid 19902] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19903] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19902] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19903] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19902] <... futex resumed>)        = 0
[pid 19903] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19902] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19903] <... futex resumed>)        = 0
[pid 19902] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19903] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19902] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19903] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19902] <... futex resumed>)        = 0
[pid 19903] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19902] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19903] <... futex resumed>)        = 0
[pid 19902] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19903] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19902] exit_group(0)               = ?
[pid 19903] <... futex resumed>)        = ?
[pid 19903] +++ exited with 0 +++
[pid 19902] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19902, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19904
./strace-static-x86_64: Process 19904 attached
[pid 19904] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19904] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19904] setpgid(0, 0)               = 0
[pid 19904] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19904] write(3, "1000", 4)         = 4
[pid 19904] close(3executing program
)                    = 0
[pid 19904] write(1, "executing program\n", 18) = 18
[pid 19904] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19904] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19904] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19904] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19904] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19904] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19904] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19905]}, 88) = 19905
[pid 19904] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19904] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19904] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19905 attached
 <unfinished ...>
[pid 19905] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19905] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19905] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19905] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19904] <... futex resumed>)        = 0
[pid 19904] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19904] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19905] <... futex resumed>)        = 1
[pid 19905] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19905] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19904] <... futex resumed>)        = 0
[pid 19905] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19904] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19904] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19905] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19905] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19904] <... futex resumed>)        = 0
[pid 19904] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19904] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19905] <... futex resumed>)        = 1
[pid 19905] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19905] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19904] <... futex resumed>)        = 0
[pid 19904] exit_group(0)               = ?
[pid 19905] <... futex resumed>)        = ?
[pid 19905] +++ exited with 0 +++
[pid 19904] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19904, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19906
./strace-static-x86_64: Process 19906 attached
[pid 19906] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19906] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19906] setpgid(0, 0)               = 0
[pid 19906] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19906] write(3, "1000", 4)         = 4
[pid 19906] close(3)                    = 0
[pid 19906] write(1, "executing program\n", 18executing program
) = 18
[pid 19906] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19906] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19906] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19906] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19906] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19906] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19906] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19907 attached
 => {parent_tid=[19907]}, 88) = 19907
[pid 19906] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19907] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19907] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19907] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19906] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19906] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19907] <... futex resumed>)        = 0
[pid 19907] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19906] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19907] <... 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 19907] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19906] <... futex resumed>)        = 0
[pid 19906] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19906] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19907] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19907] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19906] <... futex resumed>)        = 0
[pid 19906] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19906] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19907] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19907] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19906] <... futex resumed>)        = 0
[pid 19906] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19906] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19907] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19907] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19906] <... futex resumed>)        = 0
[pid 19906] exit_group(0)               = ?
[pid 19907] +++ exited with 0 +++
[pid 19906] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19906, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19908
./strace-static-x86_64: Process 19908 attached
[pid 19908] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19908] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19908] setpgid(0, 0)               = 0
[pid 19908] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19908] write(3, "1000", 4)         = 4
executing program
[pid 19908] close(3)                    = 0
[pid 19908] write(1, "executing program\n", 18) = 18
[pid 19908] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19908] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19908] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19908] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19908] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19908] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19908] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19909 attached
 => {parent_tid=[19909]}, 88) = 19909
[pid 19909] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19909] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19909] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19908] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19908] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19909] <... futex resumed>)        = 0
[pid 19909] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19908] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19909] <... 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 19909] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19908] <... futex resumed>)        = 0
[pid 19908] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19908] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19909] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19909] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19908] <... futex resumed>)        = 0
[pid 19908] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19908] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19909] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19909] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19908] <... futex resumed>)        = 0
[pid 19908] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19908] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19909] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19909] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19908] <... futex resumed>)        = 0
[pid 19908] exit_group(0)               = ?
[pid 19909] +++ exited with 0 +++
[pid 19908] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19908, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19910
./strace-static-x86_64: Process 19910 attached
[pid 19910] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19910] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19910] setpgid(0, 0)               = 0
[pid 19910] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19910] write(3, "1000", 4)         = 4
[pid 19910] close(3)                    = 0
executing program
[pid 19910] write(1, "executing program\n", 18) = 18
[pid 19910] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19910] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19910] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19910] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19910] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19910] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19910] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19911]}, 88) = 19911
./strace-static-x86_64: Process 19911 attached
[pid 19911] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19910] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19911] <... set_robust_list resumed>) = 0
[pid 19910] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19911] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19910] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19911] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19910] <... futex resumed>)        = 0
[pid 19911] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19910] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19911] <... 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 19911] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19910] <... futex resumed>)        = 0
[pid 19911] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19910] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19911] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19910] <... futex resumed>)        = 0
[pid 19911] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19910] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19911] <... futex resumed>)        = 0
[pid 19910] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19911] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19910] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19911] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19910] <... futex resumed>)        = 0
[pid 19911] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19910] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19911] <... futex resumed>)        = 0
[pid 19910] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19910] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19911] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19910] <... futex resumed>)        = 0
[pid 19910] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19911] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19911] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19910] <... futex resumed>)        = 0
[pid 19911] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19910] exit_group(0 <unfinished ...>
[pid 19911] <... futex resumed>)        = ?
[pid 19910] <... exit_group resumed>)   = ?
[pid 19911] +++ exited with 0 +++
[pid 19910] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19910, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19912 attached
, child_tidptr=0x55557c828690) = 19912
[pid 19912] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19912] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19912] setpgid(0, 0)               = 0
[pid 19912] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19912] write(3, "1000", 4)         = 4
[pid 19912] close(3)                    = 0
[pid 19912] write(1, "executing program\n", 18executing program
) = 18
[pid 19912] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19912] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19912] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19912] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19912] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19912] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19912] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19913]}, 88) = 19913
./strace-static-x86_64: Process 19913 attached
[pid 19913] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19912] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19912] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19912] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19913] <... set_robust_list resumed>) = 0
[pid 19913] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19913] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19913] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19912] <... futex resumed>)        = 0
[pid 19913] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19912] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19913] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19912] <... futex resumed>)        = 0
[pid 19913] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19912] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19913] <... futex resumed>)        = 0
[pid 19912] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19913] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19912] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19913] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19912] <... futex resumed>)        = 0
[pid 19913] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19912] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19913] <... futex resumed>)        = 0
[pid 19912] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19913] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19912] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19913] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19912] <... futex resumed>)        = 0
[pid 19913] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19912] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19913] <... futex resumed>)        = 0
[pid 19912] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19913] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19912] exit_group(0 <unfinished ...>
[pid 19913] <... futex resumed>)        = ?
[pid 19912] <... exit_group resumed>)   = ?
[pid 19913] +++ exited with 0 +++
[pid 19912] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19912, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19914
./strace-static-x86_64: Process 19914 attached
[pid 19914] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19914] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19914] setpgid(0, 0)               = 0
[pid 19914] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19914] write(3, "1000", 4)         = 4
[pid 19914] close(3executing program
)                    = 0
[pid 19914] write(1, "executing program\n", 18) = 18
[pid 19914] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19914] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19914] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19914] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19914] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19914] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19914] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19915]}, 88) = 19915
[pid 19914] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19914] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19914] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19915 attached
 <unfinished ...>
[pid 19915] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19915] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19915] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19915] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19914] <... futex resumed>)        = 0
[pid 19914] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19914] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19915] <... futex resumed>)        = 1
[pid 19915] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19915] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19914] <... futex resumed>)        = 0
[pid 19915] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19914] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19914] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19915] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19915] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19914] <... futex resumed>)        = 0
[pid 19914] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19915] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19914] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19915] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19915] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19914] <... futex resumed>)        = 0
[pid 19914] exit_group(0 <unfinished ...>
[pid 19915] <... futex resumed>)        = ?
[pid 19914] <... exit_group resumed>)   = ?
[pid 19915] +++ exited with 0 +++
[pid 19914] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19914, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19916
./strace-static-x86_64: Process 19916 attached
[pid 19916] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19916] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19916] setpgid(0, 0)               = 0
[pid 19916] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19916] write(3, "1000", 4)         = 4
executing program
[pid 19916] close(3)                    = 0
[pid 19916] write(1, "executing program\n", 18) = 18
[pid 19916] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19916] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19916] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19916] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19916] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19916] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19916] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19917]}, 88) = 19917
[pid 19916] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19916] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19916] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19917 attached
 <unfinished ...>
[pid 19917] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19917] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19917] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19917] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19916] <... futex resumed>)        = 0
[pid 19916] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19916] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19917] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19917] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19917] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19916] <... futex resumed>)        = 0
[pid 19916] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19916] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19917] <... futex resumed>)        = 0
[pid 19917] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19917] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19916] <... futex resumed>)        = 0
[pid 19916] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19916] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19917] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19917] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19916] <... futex resumed>)        = 0
[pid 19916] exit_group(0)               = ?
[pid 19917] +++ exited with 0 +++
[pid 19916] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19916, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19918 attached
, child_tidptr=0x55557c828690) = 19918
[pid 19918] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19918] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19918] setpgid(0, 0)               = 0
[pid 19918] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19918] write(3, "1000", 4)         = 4
[pid 19918] close(3)                    = 0
[pid 19918] write(1, "executing program\n", 18executing program
) = 18
[pid 19918] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19918] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19918] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19918] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19918] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19918] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19918] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19919]}, 88) = 19919
[pid 19918] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19918] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19918] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19919 attached
 <unfinished ...>
[pid 19919] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19919] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19919] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19919] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19918] <... futex resumed>)        = 0
[pid 19918] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19918] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19919] <... futex resumed>)        = 1
[pid 19919] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19919] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19918] <... futex resumed>)        = 0
[pid 19918] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19918] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19919] <... futex resumed>)        = 1
[pid 19919] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19919] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19918] <... futex resumed>)        = 0
[pid 19918] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19918] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19919] <... futex resumed>)        = 1
[pid 19919] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19919] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19918] <... futex resumed>)        = 0
[pid 19918] exit_group(0)               = ?
[pid 19919] <... futex resumed>)        = ?
[pid 19919] +++ exited with 0 +++
[pid 19918] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19918, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19920
./strace-static-x86_64: Process 19920 attached
[pid 19920] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19920] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19920] setpgid(0, 0)               = 0
[pid 19920] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19920] write(3, "1000", 4)         = 4
[pid 19920] close(3)                    = 0
[pid 19920] write(1, "executing program\n", 18executing program
) = 18
[pid 19920] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19920] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19920] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19920] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19920] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19920] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19920] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19921]}, 88) = 19921
[pid 19920] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19920] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19920] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19921 attached
 <unfinished ...>
[pid 19921] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19921] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19921] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19921] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19920] <... futex resumed>)        = 0
[pid 19920] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19920] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19921] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19921] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19920] <... futex resumed>)        = 0
[pid 19920] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19920] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19921] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19921] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19920] <... futex resumed>)        = 0
[pid 19920] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19920] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19921] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19921] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19920] <... futex resumed>)        = 0
[pid 19920] exit_group(0)               = ?
[pid 19921] +++ exited with 0 +++
[pid 19920] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19920, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19922
./strace-static-x86_64: Process 19922 attached
[pid 19922] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19922] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19922] setpgid(0, 0)               = 0
[pid 19922] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19922] write(3, "1000", 4)         = 4
[pid 19922] close(3executing program
)                    = 0
[pid 19922] write(1, "executing program\n", 18) = 18
[pid 19922] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19922] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19922] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19922] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19922] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19922] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19922] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19923]}, 88) = 19923
[pid 19922] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19922] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19922] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19923 attached
 <unfinished ...>
[pid 19923] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19923] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19923] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19923] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19922] <... futex resumed>)        = 0
[pid 19922] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19922] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19923] <... futex resumed>)        = 1
[pid 19923] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19923] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19922] <... futex resumed>)        = 0
[pid 19923] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19922] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19922] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19923] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19923] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19922] <... futex resumed>)        = 0
[pid 19922] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19922] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19923] <... futex resumed>)        = 1
[pid 19923] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19923] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19922] <... futex resumed>)        = 0
[pid 19922] exit_group(0)               = ?
[pid 19923] <... futex resumed>)        = ?
[pid 19923] +++ exited with 0 +++
[pid 19922] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19922, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19924
./strace-static-x86_64: Process 19924 attached
[pid 19924] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19924] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19924] setpgid(0, 0)               = 0
[pid 19924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
executing program
[pid 19924] write(3, "1000", 4)         = 4
[pid 19924] close(3)                    = 0
[pid 19924] write(1, "executing program\n", 18) = 18
[pid 19924] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19924] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19924] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19924] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19924] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19924] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19924] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19925 attached
 => {parent_tid=[19925]}, 88) = 19925
[pid 19925] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19925] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19925] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19924] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19924] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19925] <... futex resumed>)        = 0
[pid 19925] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19924] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19925] <... 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 19925] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19924] <... futex resumed>)        = 0
[pid 19924] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19924] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19925] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19925] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19924] <... futex resumed>)        = 0
[pid 19924] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19924] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19925] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19925] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19924] <... futex resumed>)        = 0
[pid 19924] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19924] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19925] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19925] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19924] <... futex resumed>)        = 0
[pid 19924] exit_group(0)               = ?
[pid 19925] +++ exited with 0 +++
[pid 19924] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19924, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19926
./strace-static-x86_64: Process 19926 attached
[pid 19926] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19926] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19926] setpgid(0, 0)               = 0
[pid 19926] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19926] write(3, "1000", 4)         = 4
[pid 19926] close(3)                    = 0
executing program
[pid 19926] write(1, "executing program\n", 18) = 18
[pid 19926] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19926] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19926] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19926] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19926] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19926] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19926] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19927 attached
 => {parent_tid=[19927]}, 88) = 19927
[pid 19926] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19926] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19926] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19927] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19927] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19927] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19927] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19926] <... futex resumed>)        = 0
[pid 19926] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19926] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19927] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19927] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19926] <... futex resumed>)        = 0
[pid 19926] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19926] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19927] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19927] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19926] <... futex resumed>)        = 0
[pid 19926] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19926] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19927] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19927] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19926] <... futex resumed>)        = 0
[pid 19926] exit_group(0)               = ?
[pid 19927] +++ exited with 0 +++
[pid 19926] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19926, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19928
./strace-static-x86_64: Process 19928 attached
[pid 19928] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19928] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19928] setpgid(0, 0)               = 0
[pid 19928] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19928] write(3, "1000", 4)         = 4
[pid 19928] close(3)                    = 0
executing program
[pid 19928] write(1, "executing program\n", 18) = 18
[pid 19928] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19928] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19928] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19928] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19928] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19928] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19928] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19929]}, 88) = 19929
./strace-static-x86_64: Process 19929 attached
[pid 19928] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19929] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19928] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19929] <... set_robust_list resumed>) = 0
[pid 19928] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19929] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19928] <... futex resumed>)        = 0
[pid 19929] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19928] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19929] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19929] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19928] <... futex resumed>)        = 0
[pid 19929] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19928] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19929] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19928] <... futex resumed>)        = 0
[pid 19929] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19928] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19929] <... futex resumed>)        = 0
[pid 19928] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19929] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19928] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19929] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19928] <... futex resumed>)        = 0
[pid 19929] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19928] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19929] <... futex resumed>)        = 0
[pid 19928] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19928] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19929] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19928] <... futex resumed>)        = 0
[pid 19929] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19928] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19929] <... futex resumed>)        = 0
[pid 19928] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19929] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19928] exit_group(0 <unfinished ...>
[pid 19929] <... futex resumed>)        = ?
[pid 19928] <... exit_group resumed>)   = ?
[pid 19929] +++ exited with 0 +++
[pid 19928] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19928, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19930
./strace-static-x86_64: Process 19930 attached
[pid 19930] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19930] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19930] setpgid(0, 0)               = 0
[pid 19930] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19930] write(3, "1000", 4)         = 4
[pid 19930] close(3)                    = 0
[pid 19930] write(1, "executing program\n", 18executing program
) = 18
[pid 19930] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19930] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19930] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19930] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19930] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19930] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19930] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19931]}, 88) = 19931
[pid 19930] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19930] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19930] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19931 attached
 <unfinished ...>
[pid 19931] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19931] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19931] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19931] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19930] <... futex resumed>)        = 0
[pid 19930] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19930] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19931] <... futex resumed>)        = 1
[pid 19931] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19931] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19930] <... futex resumed>)        = 0
[pid 19930] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19930] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19931] <... futex resumed>)        = 1
[pid 19931] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19931] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19930] <... futex resumed>)        = 0
[pid 19930] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19930] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19931] <... futex resumed>)        = 1
[pid 19931] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19931] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19930] <... futex resumed>)        = 0
[pid 19930] exit_group(0)               = ?
[pid 19931] <... futex resumed>)        = ?
[pid 19931] +++ exited with 0 +++
[pid 19930] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19930, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19932
./strace-static-x86_64: Process 19932 attached
[pid 19932] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19932] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19932] setpgid(0, 0)               = 0
[pid 19932] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19932] write(3, "1000", 4)         = 4
[pid 19932] close(3)                    = 0
[pid 19932] write(1, "executing program\n", 18executing program
) = 18
[pid 19932] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19932] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19932] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19932] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19932] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19932] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19932] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19933]}, 88) = 19933
[pid 19932] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19932] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19932] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19933 attached
 <unfinished ...>
[pid 19933] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19933] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19933] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19933] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19932] <... futex resumed>)        = 0
[pid 19932] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19932] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19933] <... futex resumed>)        = 1
[pid 19933] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19933] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19932] <... futex resumed>)        = 0
[pid 19932] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19932] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19933] <... futex resumed>)        = 1
[pid 19933] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19933] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19932] <... futex resumed>)        = 0
[pid 19932] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19932] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19933] <... futex resumed>)        = 1
[pid 19933] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19933] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19932] <... futex resumed>)        = 0
[pid 19932] exit_group(0)               = ?
[pid 19933] <... futex resumed>)        = ?
[pid 19933] +++ exited with 0 +++
[pid 19932] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19932, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19934 attached
, child_tidptr=0x55557c828690) = 19934
[pid 19934] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19934] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19934] setpgid(0, 0)               = 0
[pid 19934] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19934] write(3, "1000", 4)         = 4
[pid 19934] close(3)                    = 0
[pid 19934] write(1, "executing program\n", 18executing program
) = 18
[pid 19934] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19934] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19934] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19934] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19934] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19934] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19934] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19935]}, 88) = 19935
./strace-static-x86_64: Process 19935 attached
[pid 19935] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19935] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19935] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19934] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19934] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19935] <... futex resumed>)        = 0
[pid 19935] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19934] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19935] <... 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 19935] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19934] <... futex resumed>)        = 0
[pid 19934] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19934] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19935] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19935] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19934] <... futex resumed>)        = 0
[pid 19934] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19934] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19935] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19935] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19934] <... futex resumed>)        = 0
[pid 19934] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19934] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19935] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19935] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19934] <... futex resumed>)        = 0
[pid 19934] exit_group(0)               = ?
[pid 19935] +++ exited with 0 +++
[pid 19934] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19934, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19936
./strace-static-x86_64: Process 19936 attached
[pid 19936] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19936] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19936] setpgid(0, 0)               = 0
[pid 19936] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19936] write(3, "1000", 4)         = 4
[pid 19936] close(3)                    = 0
executing program
[pid 19936] write(1, "executing program\n", 18) = 18
[pid 19936] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19936] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19936] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19936] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19936] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19936] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19936] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19937 attached
 => {parent_tid=[19937]}, 88) = 19937
[pid 19936] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19936] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19936] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19937] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19937] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19937] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19937] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19936] <... futex resumed>)        = 0
[pid 19936] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19936] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19937] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19937] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19936] <... futex resumed>)        = 0
[pid 19936] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19936] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19937] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19937] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19936] <... futex resumed>)        = 0
[pid 19936] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19936] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19937] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19937] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19937] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19936] <... futex resumed>)        = 0
[pid 19936] exit_group(0 <unfinished ...>
[pid 19937] <... futex resumed>)        = ?
[pid 19936] <... exit_group resumed>)   = ?
[pid 19937] +++ exited with 0 +++
[pid 19936] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19936, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19938
./strace-static-x86_64: Process 19938 attached
[pid 19938] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19938] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19938] setpgid(0, 0)               = 0
[pid 19938] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19938] write(3, "1000", 4)         = 4
[pid 19938] close(3)                    = 0
executing program
[pid 19938] write(1, "executing program\n", 18) = 18
[pid 19938] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19938] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19938] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19938] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19938] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19938] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19938] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19939 attached
 => {parent_tid=[19939]}, 88) = 19939
[pid 19938] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19938] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19938] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19939] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19939] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19939] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19939] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19938] <... futex resumed>)        = 0
[pid 19938] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19938] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19939] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19939] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19939] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19938] <... futex resumed>)        = 0
[pid 19938] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19939] <... futex resumed>)        = 0
[pid 19938] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19939] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19939] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19939] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19938] <... futex resumed>)        = 0
[pid 19938] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19939] <... futex resumed>)        = 0
[pid 19938] <... futex resumed>)        = 1
[pid 19938] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19939] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19939] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19938] <... futex resumed>)        = 0
[pid 19939] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19938] exit_group(0 <unfinished ...>
[pid 19939] <... futex resumed>)        = ?
[pid 19938] <... exit_group resumed>)   = ?
[pid 19939] +++ exited with 0 +++
[pid 19938] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19938, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19940
./strace-static-x86_64: Process 19940 attached
[pid 19940] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19940] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19940] setpgid(0, 0)               = 0
[pid 19940] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19940] write(3, "1000", 4)         = 4
executing program
[pid 19940] close(3)                    = 0
[pid 19940] write(1, "executing program\n", 18) = 18
[pid 19940] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19940] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19940] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19940] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19940] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19940] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19940] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19941]}, 88) = 19941
[pid 19940] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19940] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19940] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19941 attached
 <unfinished ...>
[pid 19941] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19941] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19941] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19941] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19940] <... futex resumed>)        = 0
[pid 19940] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19940] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19941] <... futex resumed>)        = 1
[pid 19941] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19941] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19940] <... futex resumed>)        = 0
[pid 19940] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19940] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19941] <... futex resumed>)        = 1
[pid 19941] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19941] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19940] <... futex resumed>)        = 0
[pid 19940] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19940] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19941] <... futex resumed>)        = 1
[pid 19941] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19941] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19940] <... futex resumed>)        = 0
[pid 19940] exit_group(0)               = ?
[pid 19941] <... futex resumed>)        = ?
[pid 19941] +++ exited with 0 +++
[pid 19940] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19940, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19942
./strace-static-x86_64: Process 19942 attached
[pid 19942] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19942] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19942] setpgid(0, 0)               = 0
[pid 19942] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19942] write(3, "1000", 4)         = 4
[pid 19942] close(3)                    = 0
[pid 19942] write(1, "executing program\n", 18executing program
) = 18
[pid 19942] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19942] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19942] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19942] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19942] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19942] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19942] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19943 attached
 => {parent_tid=[19943]}, 88) = 19943
[pid 19943] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19943] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19943] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19942] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19942] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19943] <... futex resumed>)        = 0
[pid 19943] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19942] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19943] <... 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 19943] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19942] <... futex resumed>)        = 0
[pid 19942] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19943] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19942] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19943] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19943] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19942] <... futex resumed>)        = 0
[pid 19942] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19942] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19943] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19943] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19942] <... futex resumed>)        = 0
[pid 19942] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19942] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19943] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19943] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19942] <... futex resumed>)        = 0
[pid 19942] exit_group(0)               = ?
[pid 19943] +++ exited with 0 +++
[pid 19942] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19942, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19944 attached
, child_tidptr=0x55557c828690) = 19944
[pid 19944] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19944] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19944] setpgid(0, 0)               = 0
[pid 19944] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19944] write(3, "1000", 4)         = 4
executing program
[pid 19944] close(3)                    = 0
[pid 19944] write(1, "executing program\n", 18) = 18
[pid 19944] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19944] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19944] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19944] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19944] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19944] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19944] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19945 attached
 => {parent_tid=[19945]}, 88) = 19945
[pid 19945] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19944] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19945] <... set_robust_list resumed>) = 0
[pid 19944] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19945] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19944] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19945] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19944] <... futex resumed>)        = 0
[pid 19945] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19944] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19945] <... 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 19945] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19945] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19944] <... futex resumed>)        = 0
[pid 19944] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19945] <... futex resumed>)        = 0
[pid 19945] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19944] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19945] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19945] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19944] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19944] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19944] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19945] <... futex resumed>)        = 0
[pid 19945] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19945] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19944] <... futex resumed>)        = 0
[pid 19944] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19944] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19945] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19945] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19944] <... futex resumed>)        = 0
[pid 19944] exit_group(0)               = ?
[pid 19945] +++ exited with 0 +++
[pid 19944] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19944, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19946 attached
, child_tidptr=0x55557c828690) = 19946
[pid 19946] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19946] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19946] setpgid(0, 0)               = 0
[pid 19946] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19946] write(3, "1000", 4)         = 4
[pid 19946] close(3executing program
)                    = 0
[pid 19946] write(1, "executing program\n", 18) = 18
[pid 19946] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19946] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19946] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19946] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19946] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19946] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19946] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19947]}, 88) = 19947
./strace-static-x86_64: Process 19947 attached
[pid 19946] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19946] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19946] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19947] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19947] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19947] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19947] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19946] <... futex resumed>)        = 0
[pid 19947] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19946] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19947] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19946] <... futex resumed>)        = 0
[pid 19947] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19946] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19947] <... futex resumed>)        = 0
[pid 19946] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19947] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19946] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19947] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19946] <... futex resumed>)        = 0
[pid 19947] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19946] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19947] <... futex resumed>)        = 0
[pid 19946] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19947] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19946] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19947] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19946] <... futex resumed>)        = 0
[pid 19946] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19947] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19946] <... futex resumed>)        = 0
[pid 19947] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19946] exit_group(0 <unfinished ...>
[pid 19947] <... futex resumed>)        = ?
[pid 19946] <... exit_group resumed>)   = ?
[pid 19947] +++ exited with 0 +++
[pid 19946] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19946, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19948 attached
, child_tidptr=0x55557c828690) = 19948
[pid 19948] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19948] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19948] setpgid(0, 0)               = 0
[pid 19948] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19948] write(3, "1000", 4)         = 4
[pid 19948] close(3)                    = 0
[pid 19948] write(1, "executing program\n", 18executing program
) = 18
[pid 19948] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19948] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19948] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19948] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19948] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19948] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19948] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19949 attached
 => {parent_tid=[19949]}, 88) = 19949
[pid 19948] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19948] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19948] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19949] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19949] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19949] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19949] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19948] <... futex resumed>)        = 0
[pid 19949] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19948] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19949] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19948] <... futex resumed>)        = 0
[pid 19949] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19948] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19949] <... futex resumed>)        = 0
[pid 19948] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19949] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19948] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19949] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19948] <... futex resumed>)        = 0
[pid 19949] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19948] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19949] <... futex resumed>)        = 0
[pid 19948] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19949] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19948] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19949] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19948] <... futex resumed>)        = 0
[pid 19949] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19948] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19949] <... futex resumed>)        = 0
[pid 19948] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19949] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19948] exit_group(0 <unfinished ...>
[pid 19949] <... futex resumed>)        = ?
[pid 19948] <... exit_group resumed>)   = ?
[pid 19949] +++ exited with 0 +++
[pid 19948] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19948, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19950
./strace-static-x86_64: Process 19950 attached
[pid 19950] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19950] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19950] setpgid(0, 0)               = 0
[pid 19950] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19950] write(3, "1000", 4)         = 4
[pid 19950] close(3)                    = 0
[pid 19950] write(1, "executing program\n", 18executing program
) = 18
[pid 19950] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19950] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19950] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19950] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19950] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19950] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19950] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19951 attached
 => {parent_tid=[19951]}, 88) = 19951
[pid 19950] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19950] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19950] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19951] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19951] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19951] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19951] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19950] <... futex resumed>)        = 0
[pid 19950] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19950] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19951] <... futex resumed>)        = 1
[pid 19951] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19951] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19950] <... futex resumed>)        = 0
[pid 19950] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19950] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19951] <... futex resumed>)        = 1
[pid 19951] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19951] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19950] <... futex resumed>)        = 0
[pid 19950] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19950] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19951] <... futex resumed>)        = 1
[pid 19951] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19951] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19950] <... futex resumed>)        = 0
[pid 19950] exit_group(0)               = ?
[pid 19951] <... futex resumed>)        = ?
[pid 19951] +++ exited with 0 +++
[pid 19950] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19950, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19952
./strace-static-x86_64: Process 19952 attached
[pid 19952] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19952] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19952] setpgid(0, 0)               = 0
[pid 19952] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19952] write(3, "1000", 4)         = 4
[pid 19952] close(3)                    = 0
[pid 19952] write(1, "executing program\n", 18executing program
) = 18
[pid 19952] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19952] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19952] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19952] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19952] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19952] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19952] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19953 attached
 => {parent_tid=[19953]}, 88) = 19953
[pid 19952] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19952] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19952] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19953] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19953] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19953] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19953] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19952] <... futex resumed>)        = 0
[pid 19952] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19952] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19953] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19953] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19953] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19952] <... futex resumed>)        = 0
[pid 19952] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19952] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19953] <... futex resumed>)        = 0
[pid 19953] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19953] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19952] <... futex resumed>)        = 0
[pid 19952] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19952] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19953] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19953] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19953] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19952] <... futex resumed>)        = 0
[pid 19952] exit_group(0)               = ?
[pid 19953] <... futex resumed>)        = ?
[pid 19953] +++ exited with 0 +++
[pid 19952] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19952, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19954
./strace-static-x86_64: Process 19954 attached
[pid 19954] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19954] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19954] setpgid(0, 0)               = 0
[pid 19954] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19954] write(3, "1000", 4)         = 4
[pid 19954] close(3)                    = 0
[pid 19954] write(1, "executing program\n", 18executing program
) = 18
[pid 19954] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19954] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19954] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19954] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19954] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19954] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19954] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19955]}, 88) = 19955
[pid 19954] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19954] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19954] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19955 attached
 <unfinished ...>
[pid 19955] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19955] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19955] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19955] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19954] <... futex resumed>)        = 0
[pid 19954] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19954] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19955] <... futex resumed>)        = 1
[pid 19955] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19955] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19954] <... futex resumed>)        = 0
[pid 19954] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19954] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19955] <... futex resumed>)        = 1
[pid 19955] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19955] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19954] <... futex resumed>)        = 0
[pid 19954] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19954] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19955] <... futex resumed>)        = 1
[pid 19955] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19955] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19954] <... futex resumed>)        = 0
[pid 19955] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19954] exit_group(0 <unfinished ...>
[pid 19955] <... futex resumed>)        = ?
[pid 19954] <... exit_group resumed>)   = ?
[pid 19955] +++ exited with 0 +++
[pid 19954] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19954, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19956 attached
, child_tidptr=0x55557c828690) = 19956
[pid 19956] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19956] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19956] setpgid(0, 0)               = 0
[pid 19956] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19956] write(3, "1000", 4)         = 4
[pid 19956] close(3executing program
)                    = 0
[pid 19956] write(1, "executing program\n", 18) = 18
[pid 19956] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19956] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19956] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19956] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19956] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19956] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19956] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19957]}, 88) = 19957
[pid 19956] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19956] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19956] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19957 attached
 <unfinished ...>
[pid 19957] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19957] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19957] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19957] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19956] <... futex resumed>)        = 0
[pid 19956] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19956] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19957] <... futex resumed>)        = 1
[pid 19957] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19957] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19956] <... futex resumed>)        = 0
[pid 19956] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19956] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19957] <... futex resumed>)        = 1
[pid 19957] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19957] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19956] <... futex resumed>)        = 0
[pid 19956] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19956] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19957] <... futex resumed>)        = 1
[pid 19957] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19957] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19956] <... futex resumed>)        = 0
[pid 19956] exit_group(0 <unfinished ...>
[pid 19957] <... futex resumed>)        = 1
[pid 19956] <... exit_group resumed>)   = ?
[pid 19957] +++ exited with 0 +++
[pid 19956] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19956, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19958
./strace-static-x86_64: Process 19958 attached
[pid 19958] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19958] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19958] setpgid(0, 0)               = 0
[pid 19958] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19958] write(3, "1000", 4)         = 4
[pid 19958] close(3executing program
)                    = 0
[pid 19958] write(1, "executing program\n", 18) = 18
[pid 19958] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19958] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19958] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19958] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19958] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19958] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19958] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19959 attached
 => {parent_tid=[19959]}, 88) = 19959
[pid 19958] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19958] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19958] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19959] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19959] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19959] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19959] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19958] <... futex resumed>)        = 0
[pid 19958] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19958] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19959] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19959] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19958] <... futex resumed>)        = 0
[pid 19958] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19958] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19959] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19959] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19958] <... futex resumed>)        = 0
[pid 19958] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19958] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19959] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19959] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19958] <... futex resumed>)        = 0
[pid 19958] exit_group(0)               = ?
[pid 19959] +++ exited with 0 +++
[pid 19958] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19958, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19960 attached
 <unfinished ...>
[pid 19960] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19960
[pid 19960] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19960] setpgid(0, 0)               = 0
[pid 19960] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19960] write(3, "1000", 4executing program
)         = 4
[pid 19960] close(3)                    = 0
[pid 19960] write(1, "executing program\n", 18) = 18
[pid 19960] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19960] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19960] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19960] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19960] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19960] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19960] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19961 attached
 => {parent_tid=[19961]}, 88) = 19961
[pid 19960] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19960] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19960] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19961] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19961] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19961] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19961] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19960] <... futex resumed>)        = 0
[pid 19960] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19960] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19961] <... futex resumed>)        = 1
[pid 19961] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19961] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19960] <... futex resumed>)        = 0
[pid 19960] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19960] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19961] <... futex resumed>)        = 1
[pid 19961] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19961] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19960] <... futex resumed>)        = 0
[pid 19960] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19960] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19961] <... futex resumed>)        = 1
[pid 19961] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19961] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19960] <... futex resumed>)        = 0
[pid 19961] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19960] exit_group(0 <unfinished ...>
[pid 19961] <... futex resumed>)        = ?
[pid 19960] <... exit_group resumed>)   = ?
[pid 19961] +++ exited with 0 +++
[pid 19960] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19960, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19962 attached
, child_tidptr=0x55557c828690) = 19962
[pid 19962] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19962] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19962] setpgid(0, 0)               = 0
[pid 19962] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19962] write(3, "1000", 4)         = 4
[pid 19962] close(3)                    = 0
[pid 19962] write(1, "executing program\n", 18executing program
) = 18
[pid 19962] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19962] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19962] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19962] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19962] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19962] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19962] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19963]}, 88) = 19963
[pid 19962] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19962] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19962] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19963 attached
 <unfinished ...>
[pid 19963] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19963] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19963] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19963] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19962] <... futex resumed>)        = 0
[pid 19962] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19962] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19963] <... futex resumed>)        = 1
[pid 19963] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19963] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19962] <... futex resumed>)        = 0
[pid 19962] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19962] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19963] <... futex resumed>)        = 1
[pid 19963] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19963] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19962] <... futex resumed>)        = 0
[pid 19962] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19962] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19963] <... futex resumed>)        = 1
[pid 19963] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19963] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19962] <... futex resumed>)        = 0
[pid 19962] exit_group(0)               = ?
[pid 19963] <... futex resumed>)        = ?
[pid 19963] +++ exited with 0 +++
[pid 19962] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19962, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19964 attached
, child_tidptr=0x55557c828690) = 19964
[pid 19964] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19964] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19964] setpgid(0, 0)               = 0
[pid 19964] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19964] write(3, "1000", 4)         = 4
[pid 19964] close(3executing program
)                    = 0
[pid 19964] write(1, "executing program\n", 18) = 18
[pid 19964] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19964] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19964] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19964] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19964] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19964] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19964] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19965]}, 88) = 19965
./strace-static-x86_64: Process 19965 attached
[pid 19965] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19965] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19965] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19964] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19964] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19965] <... futex resumed>)        = 0
[pid 19965] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19965] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19965] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19964] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19964] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19965] <... futex resumed>)        = 0
[pid 19965] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19964] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19965] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19964] <... futex resumed>)        = 0
[pid 19964] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19965] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19964] <... futex resumed>)        = 0
[pid 19965] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19964] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19965] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19964] <... futex resumed>)        = 0
[pid 19964] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19964] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19965] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19965] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19964] <... futex resumed>)        = 0
[pid 19964] exit_group(0)               = ?
[pid 19965] +++ exited with 0 +++
[pid 19964] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19964, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19966
./strace-static-x86_64: Process 19966 attached
[pid 19966] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19966] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19966] setpgid(0, 0)               = 0
[pid 19966] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19966] write(3, "1000", 4)         = 4
[pid 19966] close(3)                    = 0
[pid 19966] write(1, "executing program\n", 18executing program
) = 18
[pid 19966] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19966] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19966] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19966] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19966] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19966] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19966] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19967]}, 88) = 19967
./strace-static-x86_64: Process 19967 attached
[pid 19966] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19966] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19966] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19967] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19967] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19967] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19967] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19966] <... futex resumed>)        = 0
[pid 19966] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19966] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19967] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19967] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19966] <... futex resumed>)        = 0
[pid 19966] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19966] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19967] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19967] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19966] <... futex resumed>)        = 0
[pid 19966] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19966] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19967] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19967] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19966] <... futex resumed>)        = 0
[pid 19966] exit_group(0)               = ?
[pid 19967] +++ exited with 0 +++
[pid 19966] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19966, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19968 attached
 <unfinished ...>
[pid 19968] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19968
[pid 19968] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19968] setpgid(0, 0)               = 0
[pid 19968] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19968] write(3, "1000", 4)         = 4
[pid 19968] close(3)                    = 0
executing program
[pid 19968] write(1, "executing program\n", 18) = 18
[pid 19968] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19968] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19968] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19968] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19968] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19968] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19968] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19969]}, 88) = 19969
./strace-static-x86_64: Process 19969 attached
[pid 19969] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19968] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19969] <... set_robust_list resumed>) = 0
[pid 19969] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19968] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19969] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19969] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19969] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19969] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19968] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19968] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19969] <... futex resumed>)        = 0
[pid 19969] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19969] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19969] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19968] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 19968] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19969] <... futex resumed>)        = 0
[pid 19968] <... futex resumed>)        = 1
[pid 19969] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19968] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19969] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19969] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19968] <... futex resumed>)        = 0
[pid 19969] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19968] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19969] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19968] <... futex resumed>)        = 0
[pid 19969] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19968] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19969] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19969] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19968] <... futex resumed>)        = 0
[pid 19969] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19968] exit_group(0 <unfinished ...>
[pid 19969] <... futex resumed>)        = ?
[pid 19968] <... exit_group resumed>)   = ?
[pid 19969] +++ exited with 0 +++
[pid 19968] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19968, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19970
./strace-static-x86_64: Process 19970 attached
[pid 19970] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19970] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19970] setpgid(0, 0)               = 0
[pid 19970] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19970] write(3, "1000", 4)         = 4
[pid 19970] close(3)                    = 0
[pid 19970] write(1, "executing program\n", 18executing program
) = 18
[pid 19970] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19970] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19970] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19970] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19970] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19970] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19970] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19971 attached
 => {parent_tid=[19971]}, 88) = 19971
[pid 19970] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19970] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19970] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19971] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19971] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19971] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19971] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19970] <... futex resumed>)        = 0
[pid 19970] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19970] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19971] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19971] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19970] <... futex resumed>)        = 0
[pid 19970] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19970] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19971] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19971] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19970] <... futex resumed>)        = 0
[pid 19970] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19970] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19971] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19971] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19970] <... futex resumed>)        = 0
[pid 19970] exit_group(0)               = ?
[pid 19971] +++ exited with 0 +++
[pid 19970] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19970, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19972
./strace-static-x86_64: Process 19972 attached
[pid 19972] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19972] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19972] setpgid(0, 0)               = 0
[pid 19972] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19972] write(3, "1000", 4)         = 4
[pid 19972] close(3)                    = 0
[pid 19972] write(1, "executing program\n", 18executing program
) = 18
[pid 19972] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19972] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19972] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19972] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19972] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19972] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19972] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19973 attached
 => {parent_tid=[19973]}, 88) = 19973
[pid 19972] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19973] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19972] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19973] <... set_robust_list resumed>) = 0
[pid 19972] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19973] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19972] <... futex resumed>)        = 0
[pid 19973] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19973] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19972] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19973] <... 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 19973] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19972] <... futex resumed>)        = 0
[pid 19972] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19972] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19973] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19973] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19972] <... futex resumed>)        = 0
[pid 19972] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19972] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19973] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19973] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19972] <... futex resumed>)        = 0
[pid 19972] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19972] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19973] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19973] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19973] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19972] <... futex resumed>)        = 0
[pid 19972] exit_group(0)               = ?
[pid 19973] <... futex resumed>)        = ?
[pid 19973] +++ exited with 0 +++
[pid 19972] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19972, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19974
./strace-static-x86_64: Process 19974 attached
[pid 19974] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19974] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19974] setpgid(0, 0)               = 0
[pid 19974] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19974] write(3, "1000", 4)         = 4
[pid 19974] close(3)                    = 0
executing program
[pid 19974] write(1, "executing program\n", 18) = 18
[pid 19974] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19974] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19974] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19974] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19974] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19974] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19974] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19975 attached
 => {parent_tid=[19975]}, 88) = 19975
[pid 19974] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19974] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19974] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19975] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19975] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19975] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19975] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19974] <... futex resumed>)        = 0
[pid 19974] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19974] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19975] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19975] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19974] <... futex resumed>)        = 0
[pid 19974] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19974] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19975] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19975] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19974] <... futex resumed>)        = 0
[pid 19974] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19974] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19975] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19975] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19974] <... futex resumed>)        = 0
[pid 19974] exit_group(0)               = ?
[pid 19975] +++ exited with 0 +++
[pid 19974] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19974, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19976 attached
, child_tidptr=0x55557c828690) = 19976
[pid 19976] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19976] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19976] setpgid(0, 0)               = 0
[pid 19976] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19976] write(3, "1000", 4)         = 4
[pid 19976] close(3)                    = 0
executing program
[pid 19976] write(1, "executing program\n", 18) = 18
[pid 19976] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19976] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19976] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19976] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19976] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19976] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19976] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19977 attached
 => {parent_tid=[19977]}, 88) = 19977
[pid 19976] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19976] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19976] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19977] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19977] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19977] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19977] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19976] <... futex resumed>)        = 0
[pid 19976] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19976] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19977] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19977] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19976] <... futex resumed>)        = 0
[pid 19976] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19976] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19977] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19977] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19976] <... futex resumed>)        = 0
[pid 19976] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19976] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19977] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19977] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19976] <... futex resumed>)        = 0
[pid 19976] exit_group(0)               = ?
[pid 19977] +++ exited with 0 +++
[pid 19976] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19976, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19978
./strace-static-x86_64: Process 19978 attached
[pid 19978] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19978] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19978] setpgid(0, 0)               = 0
[pid 19978] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19978] write(3, "1000", 4)         = 4
[pid 19978] close(3executing program
)                    = 0
[pid 19978] write(1, "executing program\n", 18) = 18
[pid 19978] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19978] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19978] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19978] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19978] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19978] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19978] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19979 attached
 => {parent_tid=[19979]}, 88) = 19979
[pid 19978] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19978] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19978] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19979] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19979] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19979] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19979] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19978] <... futex resumed>)        = 0
[pid 19978] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19978] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19979] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19979] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19978] <... futex resumed>)        = 0
[pid 19978] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19978] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19979] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19979] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19978] <... futex resumed>)        = 0
[pid 19978] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19978] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19979] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19979] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19978] <... futex resumed>)        = 0
[pid 19978] exit_group(0)               = ?
[pid 19979] +++ exited with 0 +++
[pid 19978] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19978, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19980
./strace-static-x86_64: Process 19980 attached
[pid 19980] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19980] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19980] setpgid(0, 0)               = 0
[pid 19980] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19980] write(3, "1000", 4)         = 4
[pid 19980] close(3)                    = 0
executing program
[pid 19980] write(1, "executing program\n", 18) = 18
[pid 19980] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19980] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19980] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19980] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19980] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19980] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19980] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19981 attached
 => {parent_tid=[19981]}, 88) = 19981
[pid 19980] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19980] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19980] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19981] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19981] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19981] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19981] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19980] <... futex resumed>)        = 0
[pid 19980] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19980] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19981] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19981] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19980] <... futex resumed>)        = 0
[pid 19980] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19980] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19981] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19981] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19980] <... futex resumed>)        = 0
[pid 19981] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19980] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19980] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19981] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19981] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19980] <... futex resumed>)        = 0
[pid 19981] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19980] exit_group(0 <unfinished ...>
[pid 19981] <... futex resumed>)        = ?
[pid 19980] <... exit_group resumed>)   = ?
[pid 19981] +++ exited with 0 +++
[pid 19980] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19980, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19982 attached
, child_tidptr=0x55557c828690) = 19982
[pid 19982] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19982] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19982] setpgid(0, 0)               = 0
[pid 19982] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19982] write(3, "1000", 4)         = 4
[pid 19982] close(3)                    = 0
[pid 19982] write(1, "executing program\n", 18executing program
) = 18
[pid 19982] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19982] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19982] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19982] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19982] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19982] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19982] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19983]}, 88) = 19983
./strace-static-x86_64: Process 19983 attached
[pid 19982] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19982] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19982] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19983] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19983] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19983] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19983] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19982] <... futex resumed>)        = 0
[pid 19983] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19982] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19983] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19982] <... futex resumed>)        = 0
[pid 19983] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19982] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19983] <... futex resumed>)        = 0
[pid 19982] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19983] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19982] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19983] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19982] <... futex resumed>)        = 0
[pid 19983] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19982] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19983] <... futex resumed>)        = 0
[pid 19982] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19983] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19982] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19983] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19982] <... futex resumed>)        = 0
[pid 19983] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19982] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19983] <... futex resumed>)        = 0
[pid 19982] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19983] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19982] exit_group(0 <unfinished ...>
[pid 19983] <... futex resumed>)        = ?
[pid 19982] <... exit_group resumed>)   = ?
[pid 19983] +++ exited with 0 +++
[pid 19982] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19982, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19984
./strace-static-x86_64: Process 19984 attached
[pid 19984] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19984] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19984] setpgid(0, 0)               = 0
[pid 19984] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19984] write(3, "1000", 4)         = 4
[pid 19984] close(3executing program
)                    = 0
[pid 19984] write(1, "executing program\n", 18) = 18
[pid 19984] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19984] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19984] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19984] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19984] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19984] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19984] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19985 attached
 => {parent_tid=[19985]}, 88) = 19985
[pid 19985] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19984] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19985] <... set_robust_list resumed>) = 0
[pid 19984] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19985] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 19984] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19985] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 19984] <... futex resumed>)        = 0
[pid 19985] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 19984] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19985] <... 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 19985] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19984] <... futex resumed>)        = 0
[pid 19985] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19984] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19985] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19984] <... futex resumed>)        = 0
[pid 19985] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19984] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19985] <... futex resumed>)        = 0
[pid 19984] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19985] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19984] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19985] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19984] <... futex resumed>)        = 0
[pid 19985] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19984] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19985] <... futex resumed>)        = 0
[pid 19984] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19985] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19984] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19985] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19984] <... futex resumed>)        = 0
[pid 19985] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19984] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19985] <... futex resumed>)        = 0
[pid 19984] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19985] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19984] exit_group(0 <unfinished ...>
[pid 19985] <... futex resumed>)        = ?
[pid 19984] <... exit_group resumed>)   = ?
[pid 19985] +++ exited with 0 +++
[pid 19984] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19984, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19986 attached
, child_tidptr=0x55557c828690) = 19986
[pid 19986] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19986] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19986] setpgid(0, 0)               = 0
[pid 19986] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19986] write(3, "1000", 4)         = 4
[pid 19986] close(3executing program
)                    = 0
[pid 19986] write(1, "executing program\n", 18) = 18
[pid 19986] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19986] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19986] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19986] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19986] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19986] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19986] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19987]}, 88) = 19987
[pid 19986] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19986] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19986] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19987 attached
 <unfinished ...>
[pid 19987] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19987] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19987] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19987] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19986] <... futex resumed>)        = 0
[pid 19986] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19986] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19987] <... futex resumed>)        = 1
[pid 19987] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19987] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19986] <... futex resumed>)        = 0
[pid 19986] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19986] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19987] <... futex resumed>)        = 1
[pid 19987] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19987] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19986] <... futex resumed>)        = 0
[pid 19986] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19986] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19987] <... futex resumed>)        = 1
[pid 19987] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19987] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19986] <... futex resumed>)        = 0
[pid 19986] exit_group(0)               = ?
[pid 19987] <... futex resumed>)        = ?
[pid 19987] +++ exited with 0 +++
[pid 19986] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19986, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19988
./strace-static-x86_64: Process 19988 attached
[pid 19988] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19988] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19988] setpgid(0, 0)               = 0
[pid 19988] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19988] write(3, "1000", 4)         = 4
[pid 19988] close(3)                    = 0
executing program
[pid 19988] write(1, "executing program\n", 18) = 18
[pid 19988] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19988] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19988] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19988] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19988] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19988] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19988] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19989 attached
 => {parent_tid=[19989]}, 88) = 19989
[pid 19988] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19988] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19988] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19989] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19989] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19989] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19989] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19988] <... futex resumed>)        = 0
[pid 19988] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19988] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19989] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19989] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19988] <... futex resumed>)        = 0
[pid 19988] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19988] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19989] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19989] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19988] <... futex resumed>)        = 0
[pid 19988] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19988] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19989] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19989] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19988] <... futex resumed>)        = 0
[pid 19988] exit_group(0)               = ?
[pid 19989] +++ exited with 0 +++
[pid 19988] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19988, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19990
./strace-static-x86_64: Process 19990 attached
[pid 19990] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19990] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19990] setpgid(0, 0)               = 0
[pid 19990] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19990] write(3, "1000", 4)         = 4
[pid 19990] close(3executing program
)                    = 0
[pid 19990] write(1, "executing program\n", 18) = 18
[pid 19990] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19990] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19990] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19990] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19990] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19990] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19990] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19991 attached
 => {parent_tid=[19991]}, 88) = 19991
[pid 19990] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19990] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19990] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19991] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19991] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19991] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19991] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19990] <... futex resumed>)        = 0
[pid 19990] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19990] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19991] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19991] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19990] <... futex resumed>)        = 0
[pid 19990] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19990] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19991] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19991] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19990] <... futex resumed>)        = 0
[pid 19990] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19990] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19991] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19991] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19990] <... futex resumed>)        = 0
[pid 19990] exit_group(0)               = ?
[pid 19991] +++ exited with 0 +++
[pid 19990] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19990, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19992
./strace-static-x86_64: Process 19992 attached
[pid 19992] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19992] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19992] setpgid(0, 0)               = 0
[pid 19992] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19992] write(3, "1000", 4)         = 4
[pid 19992] close(3)                    = 0
executing program
[pid 19992] write(1, "executing program\n", 18) = 18
[pid 19992] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19992] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19992] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19992] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19992] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19992] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19992] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19993]}, 88) = 19993
./strace-static-x86_64: Process 19993 attached
[pid 19992] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19992] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19993] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 19992] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19993] <... set_robust_list resumed>) = 0
[pid 19993] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19993] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19993] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19992] <... futex resumed>)        = 0
[pid 19993] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 19992] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19993] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 19992] <... futex resumed>)        = 0
[pid 19993] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19992] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19993] <... futex resumed>)        = 0
[pid 19992] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19993] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 19992] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19993] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 19992] <... futex resumed>)        = 0
[pid 19993] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19992] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19993] <... futex resumed>)        = 0
[pid 19992] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19993] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 19992] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19993] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 19992] <... futex resumed>)        = 0
[pid 19993] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19992] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19993] <... futex resumed>)        = 0
[pid 19992] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 19993] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 19992] exit_group(0 <unfinished ...>
[pid 19993] <... futex resumed>)        = ?
[pid 19992] <... exit_group resumed>)   = ?
[pid 19993] +++ exited with 0 +++
[pid 19992] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19992, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19994 attached
 <unfinished ...>
[pid 19994] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19994] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19994] setpgid(0, 0)               = 0
[pid 19994] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19994
[pid 19994] <... openat resumed>)       = 3
[pid 19994] write(3, "1000", 4)         = 4
[pid 19994] close(3)                    = 0
executing program
[pid 19994] write(1, "executing program\n", 18) = 18
[pid 19994] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19994] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19994] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19994] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19994] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19994] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19994] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19995]}, 88) = 19995
[pid 19994] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19994] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19994] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 19995 attached
 <unfinished ...>
[pid 19995] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19995] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19995] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19995] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19994] <... futex resumed>)        = 0
[pid 19994] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19994] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19995] <... futex resumed>)        = 1
[pid 19995] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19995] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19994] <... futex resumed>)        = 0
[pid 19994] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19994] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19995] <... futex resumed>)        = 1
[pid 19995] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19995] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 19994] <... futex resumed>)        = 0
[pid 19994] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19994] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19995] <... futex resumed>)        = 1
[pid 19995] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19995] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19994] <... futex resumed>)        = 0
[pid 19994] exit_group(0)               = ?
[pid 19995] +++ exited with 0 +++
[pid 19994] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19994, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 19996
./strace-static-x86_64: Process 19996 attached
[pid 19996] set_robust_list(0x55557c8286a0, 24) = 0
[pid 19996] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19996] setpgid(0, 0)               = 0
[pid 19996] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19996] write(3, "1000", 4)         = 4
executing program
[pid 19996] close(3)                    = 0
[pid 19996] write(1, "executing program\n", 18) = 18
[pid 19996] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19996] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19996] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19996] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19996] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19996] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19996] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[19997]}, 88) = 19997
./strace-static-x86_64: Process 19997 attached
[pid 19996] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19996] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19996] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19997] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19997] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19997] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19997] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19996] <... futex resumed>)        = 0
[pid 19996] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19996] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19997] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19997] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19996] <... futex resumed>)        = 0
[pid 19996] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19996] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19997] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19997] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19996] <... futex resumed>)        = 0
[pid 19996] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19996] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19997] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19997] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19996] <... futex resumed>)        = 0
[pid 19996] exit_group(0)               = ?
[pid 19997] +++ exited with 0 +++
[pid 19996] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19996, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19998 attached
 <unfinished ...>
[pid 19998] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 19998
[pid 19998] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19998] setpgid(0, 0)               = 0
[pid 19998] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19998] write(3, "1000", 4)         = 4
[pid 19998] close(3)                    = 0
[pid 19998] write(1, "executing program\n", 18executing program
) = 18
[pid 19998] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19998] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 19998] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 19998] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 19998] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 19998] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 19998] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 19999 attached
 => {parent_tid=[19999]}, 88) = 19999
[pid 19998] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19998] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19998] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19999] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 19999] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 19999] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 19999] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19998] <... futex resumed>)        = 0
[pid 19998] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19998] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19999] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 19999] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19998] <... futex resumed>)        = 0
[pid 19998] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19998] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19999] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 19999] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19998] <... futex resumed>)        = 0
[pid 19998] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 19998] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 19999] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 19999] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 19998] <... futex resumed>)        = 0
[pid 19998] exit_group(0)               = ?
[pid 19999] +++ exited with 0 +++
[pid 19998] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19998, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20000 attached
 <unfinished ...>
[pid 20000] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20000] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20000
[pid 20000] <... prctl resumed>)        = 0
[pid 20000] setpgid(0, 0)               = 0
[pid 20000] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20000] write(3, "1000", 4)         = 4
[pid 20000] close(3)                    = 0
[pid 20000] write(1, "executing program\n", 18executing program
) = 18
[pid 20000] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20000] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20000] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20000] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20000] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20000] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20000] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20001]}, 88) = 20001
[pid 20000] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20000] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20000] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20001 attached
 <unfinished ...>
[pid 20001] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20001] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20001] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20001] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20000] <... futex resumed>)        = 0
[pid 20000] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20000] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20001] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20001] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20000] <... futex resumed>)        = 0
[pid 20000] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20000] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20001] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20001] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20000] <... futex resumed>)        = 0
[pid 20000] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20000] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20001] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20001] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20000] <... futex resumed>)        = 0
[pid 20000] exit_group(0)               = ?
[pid 20001] +++ exited with 0 +++
[pid 20000] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20000, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20002 attached
 <unfinished ...>
[pid 20002] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20002
[pid 20002] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20002] setpgid(0, 0)               = 0
[pid 20002] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20002] write(3, "1000", 4)         = 4
[pid 20002] close(3)                    = 0
[pid 20002] write(1, "executing program\n", 18executing program
) = 18
[pid 20002] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20002] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20002] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20002] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20002] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20002] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20002] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20003]}, 88) = 20003
./strace-static-x86_64: Process 20003 attached
[pid 20003] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20002] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20003] <... set_robust_list resumed>) = 0
[pid 20002] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20003] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20002] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20003] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20002] <... futex resumed>)        = 0
[pid 20003] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20002] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20003] <... 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 20003] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20002] <... futex resumed>)        = 0
[pid 20003] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20002] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20003] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20002] <... futex resumed>)        = 0
[pid 20003] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20002] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20003] <... futex resumed>)        = 0
[pid 20002] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20003] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20002] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20003] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20002] <... futex resumed>)        = 0
[pid 20003] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20002] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20003] <... futex resumed>)        = 0
[pid 20002] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20003] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20002] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20003] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20002] <... futex resumed>)        = 0
[pid 20003] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20002] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20003] <... futex resumed>)        = 0
[pid 20002] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20003] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20002] exit_group(0 <unfinished ...>
[pid 20003] <... futex resumed>)        = ?
[pid 20002] <... exit_group resumed>)   = ?
[pid 20003] +++ exited with 0 +++
[pid 20002] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20002, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20004 attached
 <unfinished ...>
[pid 20004] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20004] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20004] setpgid(0, 0)               = 0
[pid 20004] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20004
[pid 20004] <... openat resumed>)       = 3
[pid 20004] write(3, "1000", 4)         = 4
[pid 20004] close(3)                    = 0
executing program
[pid 20004] write(1, "executing program\n", 18) = 18
[pid 20004] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20004] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20004] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20004] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20004] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20004] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20004] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20005]}, 88) = 20005
./strace-static-x86_64: Process 20005 attached
[pid 20005] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20004] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20005] <... set_robust_list resumed>) = 0
[pid 20004] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20005] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20004] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20005] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20004] <... futex resumed>)        = 0
[pid 20005] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20004] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20005] <... 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 20005] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20004] <... futex resumed>)        = 0
[pid 20005] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20004] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20005] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20004] <... futex resumed>)        = 0
[pid 20005] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20004] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20005] <... futex resumed>)        = 0
[pid 20004] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20005] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20004] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20005] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20004] <... futex resumed>)        = 0
[pid 20005] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20004] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20005] <... futex resumed>)        = 0
[pid 20004] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20005] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20004] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20005] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20004] <... futex resumed>)        = 0
[pid 20005] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20004] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20005] <... futex resumed>)        = 0
[pid 20004] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20005] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20004] exit_group(0 <unfinished ...>
[pid 20005] <... futex resumed>)        = ?
[pid 20004] <... exit_group resumed>)   = ?
[pid 20005] +++ exited with 0 +++
[pid 20004] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20004, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20006
./strace-static-x86_64: Process 20006 attached
[pid 20006] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20006] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20006] setpgid(0, 0)               = 0
[pid 20006] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20006] write(3, "1000", 4)         = 4
[pid 20006] close(3executing program
)                    = 0
[pid 20006] write(1, "executing program\n", 18) = 18
[pid 20006] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20006] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20006] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20006] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20006] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20006] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20006] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20007]}, 88) = 20007
[pid 20006] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20006] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20006] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20007 attached
 <unfinished ...>
[pid 20007] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20007] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20007] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20007] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20006] <... futex resumed>)        = 0
[pid 20007] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20006] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20006] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20007] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20007] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20006] <... futex resumed>)        = 0
[pid 20006] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20006] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20007] <... futex resumed>)        = 1
[pid 20007] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20007] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20006] <... futex resumed>)        = 0
[pid 20006] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20006] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20007] <... futex resumed>)        = 1
[pid 20007] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20007] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20006] <... futex resumed>)        = 0
[pid 20006] exit_group(0)               = ?
[pid 20007] <... futex resumed>)        = ?
[pid 20007] +++ exited with 0 +++
[pid 20006] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20006, 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=0x55557c828690) = 20008
./strace-static-x86_64: Process 20008 attached
[pid 20008] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20008] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20008] setpgid(0, 0)               = 0
[pid 20008] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20008] write(3, "1000", 4)         = 4
[pid 20008] close(3)                    = 0
executing program
[pid 20008] write(1, "executing program\n", 18) = 18
[pid 20008] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20008] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20008] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20008] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20008] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20008] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20008] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20009]}, 88) = 20009
[pid 20008] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20008] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20008] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20009 attached
 <unfinished ...>
[pid 20009] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20009] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20009] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20009] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20008] <... futex resumed>)        = 0
[pid 20008] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20008] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20009] <... futex resumed>)        = 1
[pid 20009] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20009] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20008] <... futex resumed>)        = 0
[pid 20008] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20008] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20009] <... futex resumed>)        = 1
[pid 20009] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20009] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20008] <... futex resumed>)        = 0
[pid 20008] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20008] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20009] <... futex resumed>)        = 1
[pid 20009] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20009] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20008] <... futex resumed>)        = 0
[pid 20009] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20008] exit_group(0)               = ?
[pid 20009] <... futex resumed>)        = ?
[pid 20009] +++ exited with 0 +++
[pid 20008] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20008, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20010
./strace-static-x86_64: Process 20010 attached
[pid 20010] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20010] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20010] setpgid(0, 0)               = 0
[pid 20010] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20010] write(3, "1000", 4)         = 4
[pid 20010] close(3)                    = 0
[pid 20010] write(1, "executing program\n", 18executing program
) = 18
[pid 20010] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20010] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20010] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20010] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20010] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20010] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20010] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20011 attached
 => {parent_tid=[20011]}, 88) = 20011
[pid 20011] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20010] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20010] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20010] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20011] <... set_robust_list resumed>) = 0
[pid 20011] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20011] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20011] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20010] <... futex resumed>)        = 0
[pid 20010] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20010] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20011] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20011] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20010] <... futex resumed>)        = 0
[pid 20010] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20010] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20011] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20011] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20010] <... futex resumed>)        = 0
[pid 20010] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20010] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20011] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20011] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20010] <... futex resumed>)        = 0
[pid 20010] exit_group(0)               = ?
[pid 20011] +++ exited with 0 +++
[pid 20010] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20010, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20012
./strace-static-x86_64: Process 20012 attached
[pid 20012] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20012] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20012] setpgid(0, 0)               = 0
[pid 20012] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20012] write(3, "1000", 4)         = 4
[pid 20012] close(3executing program
)                    = 0
[pid 20012] write(1, "executing program\n", 18) = 18
[pid 20012] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20012] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20012] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20012] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20012] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20012] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20012] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20013 attached
 => {parent_tid=[20013]}, 88) = 20013
[pid 20012] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20012] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20012] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20013] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20013] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20013] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20013] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20012] <... futex resumed>)        = 0
[pid 20012] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20012] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20013] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20013] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20012] <... futex resumed>)        = 0
[pid 20012] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20012] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20013] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20013] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20012] <... futex resumed>)        = 0
[pid 20012] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20012] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20013] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20013] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20012] <... futex resumed>)        = 0
[pid 20012] exit_group(0)               = ?
[pid 20013] +++ exited with 0 +++
[pid 20012] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20012, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20014
./strace-static-x86_64: Process 20014 attached
[pid 20014] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20014] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20014] setpgid(0, 0)               = 0
[pid 20014] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20014] write(3, "1000", 4)         = 4
[pid 20014] close(3executing program
)                    = 0
[pid 20014] write(1, "executing program\n", 18) = 18
[pid 20014] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20014] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20014] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20014] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20014] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20014] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20014] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20015 attached
 => {parent_tid=[20015]}, 88) = 20015
[pid 20014] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20014] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20014] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20015] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20015] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20015] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20015] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20014] <... futex resumed>)        = 0
[pid 20014] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20014] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20015] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20015] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20014] <... futex resumed>)        = 0
[pid 20014] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20015] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20014] <... futex resumed>)        = 0
[pid 20015] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20014] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20015] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20014] <... futex resumed>)        = 0
[pid 20015] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20014] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20015] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20014] <... futex resumed>)        = 0
[pid 20015] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20014] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20015] <... futex resumed>)        = 0
[pid 20014] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20015] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20014] exit_group(0 <unfinished ...>
[pid 20015] <... futex resumed>)        = ?
[pid 20014] <... exit_group resumed>)   = ?
[pid 20015] +++ exited with 0 +++
[pid 20014] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20014, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20016 attached
, child_tidptr=0x55557c828690) = 20016
[pid 20016] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20016] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20016] setpgid(0, 0)               = 0
[pid 20016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20016] write(3, "1000", 4)         = 4
[pid 20016] close(3)                    = 0
executing program
[pid 20016] write(1, "executing program\n", 18) = 18
[pid 20016] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20016] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20016] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20016] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20016] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20016] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20016] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20017 attached
 <unfinished ...>
[pid 20017] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20016] <... clone3 resumed> => {parent_tid=[20017]}, 88) = 20017
[pid 20017] <... set_robust_list resumed>) = 0
[pid 20016] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20017] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20016] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20017] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20016] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20017] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20016] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20017] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20016] <... futex resumed>)        = 0
[pid 20017] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20016] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20017] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20016] <... futex resumed>)        = 0
[pid 20017] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20016] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20017] <... futex resumed>)        = 0
[pid 20016] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20017] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20016] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20017] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20016] <... futex resumed>)        = 0
[pid 20017] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20016] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20017] <... futex resumed>)        = 0
[pid 20016] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20017] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20016] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20017] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20016] <... futex resumed>)        = 0
[pid 20017] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20016] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20017] <... futex resumed>)        = 0
[pid 20016] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20017] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20016] exit_group(0 <unfinished ...>
[pid 20017] <... futex resumed>)        = ?
[pid 20016] <... exit_group resumed>)   = ?
[pid 20017] +++ exited with 0 +++
[pid 20016] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20016, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20018 attached
, child_tidptr=0x55557c828690) = 20018
[pid 20018] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20018] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20018] setpgid(0, 0)               = 0
[pid 20018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20018] write(3, "1000", 4)         = 4
[pid 20018] close(3executing program
)                    = 0
[pid 20018] write(1, "executing program\n", 18) = 18
[pid 20018] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20018] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20018] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20018] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20018] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20018] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20018] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20019 attached
 => {parent_tid=[20019]}, 88) = 20019
[pid 20018] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20018] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20018] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20019] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20019] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20019] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20019] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20018] <... futex resumed>)        = 0
[pid 20019] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20018] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20019] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20018] <... futex resumed>)        = 0
[pid 20019] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20018] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20019] <... futex resumed>)        = 0
[pid 20018] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20019] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20018] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20019] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20018] <... futex resumed>)        = 0
[pid 20019] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20018] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20019] <... futex resumed>)        = 0
[pid 20018] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20019] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20018] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20019] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20018] <... futex resumed>)        = 0
[pid 20019] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20018] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20019] <... futex resumed>)        = 0
[pid 20018] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20019] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20018] exit_group(0 <unfinished ...>
[pid 20019] <... futex resumed>)        = ?
[pid 20018] <... exit_group resumed>)   = ?
[pid 20019] +++ exited with 0 +++
[pid 20018] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20018, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20020 attached
, child_tidptr=0x55557c828690) = 20020
[pid 20020] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20020] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20020] setpgid(0, 0)               = 0
[pid 20020] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20020] write(3, "1000", 4)         = 4
[pid 20020] close(3executing program
)                    = 0
[pid 20020] write(1, "executing program\n", 18) = 18
[pid 20020] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20020] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20020] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20020] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20020] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20020] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20020] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20021 attached
 => {parent_tid=[20021]}, 88) = 20021
[pid 20020] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20020] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20020] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20021] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20021] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20021] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20021] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20020] <... futex resumed>)        = 0
[pid 20021] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20020] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20021] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20020] <... futex resumed>)        = 0
[pid 20021] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20020] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20021] <... futex resumed>)        = 0
[pid 20020] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20021] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20020] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20021] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20020] <... futex resumed>)        = 0
[pid 20021] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20020] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20021] <... futex resumed>)        = 0
[pid 20020] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20021] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20020] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20021] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20020] <... futex resumed>)        = 0
[pid 20021] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20020] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20021] <... futex resumed>)        = 0
[pid 20020] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20021] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20020] exit_group(0 <unfinished ...>
[pid 20021] <... futex resumed>)        = ?
[pid 20020] <... exit_group resumed>)   = ?
[pid 20021] +++ exited with 0 +++
[pid 20020] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20020, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20022 attached
, child_tidptr=0x55557c828690) = 20022
[pid 20022] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20022] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20022] setpgid(0, 0)               = 0
[pid 20022] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20022] write(3, "1000", 4)         = 4
[pid 20022] close(3)                    = 0
executing program
[pid 20022] write(1, "executing program\n", 18) = 18
[pid 20022] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20022] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20022] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20022] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20022] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20022] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20022] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20023]}, 88) = 20023
[pid 20022] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20022] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20022] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20023 attached
 <unfinished ...>
[pid 20023] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20023] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20023] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20023] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20022] <... futex resumed>)        = 0
[pid 20022] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20022] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20023] <... futex resumed>)        = 1
[pid 20023] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20023] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20022] <... futex resumed>)        = 0
[pid 20022] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20022] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20023] <... futex resumed>)        = 1
[pid 20023] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20023] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20022] <... futex resumed>)        = 0
[pid 20022] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20022] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20023] <... futex resumed>)        = 1
[pid 20023] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20023] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20022] <... futex resumed>)        = 0
[pid 20022] exit_group(0)               = ?
[pid 20023] <... futex resumed>)        = ?
[pid 20023] +++ exited with 0 +++
[pid 20022] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20022, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20024 attached
, child_tidptr=0x55557c828690) = 20024
[pid 20024] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20024] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20024] setpgid(0, 0)               = 0
[pid 20024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20024] write(3, "1000", 4)         = 4
[pid 20024] close(3)                    = 0
[pid 20024] write(1, "executing program\n", 18executing program
) = 18
[pid 20024] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20024] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20024] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20024] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20024] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20024] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20024] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20025]}, 88) = 20025
[pid 20024] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20024] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20024] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20025 attached
 <unfinished ...>
[pid 20025] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20025] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20025] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20025] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20024] <... futex resumed>)        = 0
[pid 20024] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20024] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20025] <... futex resumed>)        = 1
[pid 20025] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20025] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20024] <... futex resumed>)        = 0
[pid 20024] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20024] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20025] <... futex resumed>)        = 1
[pid 20025] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20025] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20024] <... futex resumed>)        = 0
[pid 20024] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20024] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20025] <... futex resumed>)        = 1
[pid 20025] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20025] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20024] <... futex resumed>)        = 0
[pid 20024] exit_group(0 <unfinished ...>
[pid 20025] <... futex resumed>)        = 1
[pid 20024] <... exit_group resumed>)   = ?
[pid 20025] +++ exited with 0 +++
[pid 20024] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20024, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20026
./strace-static-x86_64: Process 20026 attached
[pid 20026] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20026] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20026] setpgid(0, 0)               = 0
[pid 20026] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20026] write(3, "1000", 4)         = 4
[pid 20026] close(3)                    = 0
[pid 20026] write(1, "executing program\n", 18executing program
) = 18
[pid 20026] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20026] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20026] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20026] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20026] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20026] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20026] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20027]}, 88) = 20027
./strace-static-x86_64: Process 20027 attached
[pid 20026] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20026] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20026] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20027] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20027] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20027] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20027] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20026] <... futex resumed>)        = 0
[pid 20026] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20026] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20027] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20027] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20026] <... futex resumed>)        = 0
[pid 20026] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20026] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20027] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20027] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20026] <... futex resumed>)        = 0
[pid 20026] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20026] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20027] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20027] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20026] <... futex resumed>)        = 0
[pid 20026] exit_group(0)               = ?
[pid 20027] +++ exited with 0 +++
[pid 20026] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20026, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20028 attached
 <unfinished ...>
[pid 20028] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20028
[pid 20028] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20028] setpgid(0, 0)               = 0
[pid 20028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20028] write(3, "1000", 4)         = 4
[pid 20028] close(3)                    = 0
[pid 20028] write(1, "executing program\n", 18executing program
) = 18
[pid 20028] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20028] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20028] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20028] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20028] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20028] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20028] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20029]}, 88) = 20029
./strace-static-x86_64: Process 20029 attached
[pid 20028] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20028] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20028] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20029] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20029] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20029] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20029] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20028] <... futex resumed>)        = 0
[pid 20028] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20028] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20029] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20029] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20028] <... futex resumed>)        = 0
[pid 20028] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20028] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20029] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20029] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20028] <... futex resumed>)        = 0
[pid 20028] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20028] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20029] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20029] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20028] <... futex resumed>)        = 0
[pid 20028] exit_group(0)               = ?
[pid 20029] +++ exited with 0 +++
[pid 20028] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20028, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20030
./strace-static-x86_64: Process 20030 attached
[pid 20030] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20030] setpgid(0, 0)               = 0
[pid 20030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20030] write(3, "1000", 4)         = 4
[pid 20030] close(3)                    = 0
[pid 20030] write(1, "executing program\n", 18executing program
) = 18
[pid 20030] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20030] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20030] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20030] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20030] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20030] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20030] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20031]}, 88) = 20031
./strace-static-x86_64: Process 20031 attached
[pid 20030] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20030] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20030] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20031] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20031] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20031] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20031] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20030] <... futex resumed>)        = 0
[pid 20030] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20030] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20031] <... futex resumed>)        = 1
[pid 20031] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20031] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20030] <... futex resumed>)        = 0
[pid 20030] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20030] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20031] <... futex resumed>)        = 1
[pid 20031] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20031] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20030] <... futex resumed>)        = 0
[pid 20031] <... futex resumed>)        = 1
[pid 20030] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20030] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20031] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20031] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20030] <... futex resumed>)        = 0
[pid 20030] exit_group(0)               = ?
[pid 20031] <... futex resumed>)        = ?
[pid 20031] +++ exited with 0 +++
[pid 20030] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20030, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20032 attached
, child_tidptr=0x55557c828690) = 20032
[pid 20032] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20032] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20032] setpgid(0, 0)               = 0
[pid 20032] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20032] write(3, "1000", 4)         = 4
[pid 20032] close(3)                    = 0
[pid 20032] write(1, "executing program\n", 18executing program
) = 18
[pid 20032] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20032] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20032] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20032] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20032] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20032] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20032] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20033]}, 88) = 20033
[pid 20032] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20032] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20032] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20033 attached
 <unfinished ...>
[pid 20033] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20033] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20033] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20033] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20032] <... futex resumed>)        = 0
[pid 20032] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20032] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20033] <... futex resumed>)        = 1
[pid 20033] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20033] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20032] <... futex resumed>)        = 0
[pid 20032] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20032] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20033] <... futex resumed>)        = 1
[pid 20033] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20033] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20032] <... futex resumed>)        = 0
[pid 20032] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20032] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20033] <... futex resumed>)        = 1
[pid 20033] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20033] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20032] <... futex resumed>)        = 0
[pid 20032] exit_group(0)               = ?
[pid 20033] <... futex resumed>)        = ?
[pid 20033] +++ exited with 0 +++
[pid 20032] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20032, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20034
./strace-static-x86_64: Process 20034 attached
[pid 20034] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20034] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20034] setpgid(0, 0)               = 0
[pid 20034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20034] write(3, "1000", 4)         = 4
[pid 20034] close(3)                    = 0
[pid 20034] write(1, "executing program\n", 18executing program
) = 18
[pid 20034] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20034] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20034] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20034] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20034] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20034] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20034] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20035]}, 88) = 20035
./strace-static-x86_64: Process 20035 attached
[pid 20035] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20034] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20035] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20034] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20034] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20035] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20035] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20034] <... futex resumed>)        = 0
[pid 20034] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20035] <... 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 20035] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20034] <... futex resumed>)        = 0
[pid 20034] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20034] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20035] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20035] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20034] <... futex resumed>)        = 0
[pid 20034] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20034] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20035] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20035] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20034] <... futex resumed>)        = 0
[pid 20034] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20034] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20035] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20035] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20034] <... futex resumed>)        = 0
[pid 20034] exit_group(0 <unfinished ...>
[pid 20035] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20034] <... exit_group resumed>)   = ?
[pid 20035] <... futex resumed>)        = ?
[pid 20035] +++ exited with 0 +++
[pid 20034] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20034, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20036
./strace-static-x86_64: Process 20036 attached
[pid 20036] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20036] setpgid(0, 0)               = 0
[pid 20036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20036] write(3, "1000", 4)         = 4
[pid 20036] close(3executing program
)                    = 0
[pid 20036] write(1, "executing program\n", 18) = 18
[pid 20036] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20036] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20036] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20036] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20036] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20036] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20036] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20037 attached
 => {parent_tid=[20037]}, 88) = 20037
[pid 20037] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20036] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20037] <... set_robust_list resumed>) = 0
[pid 20036] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20037] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20036] <... futex resumed>)        = 0
[pid 20037] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20036] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20037] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20037] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20036] <... futex resumed>)        = 0
[pid 20036] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20036] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20037] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20037] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20036] <... futex resumed>)        = 0
[pid 20036] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20036] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20037] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20037] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20036] <... futex resumed>)        = 0
[pid 20036] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20036] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20037] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20037] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20036] <... futex resumed>)        = 0
[pid 20036] exit_group(0)               = ?
[pid 20037] +++ exited with 0 +++
[pid 20036] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20036, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20038
./strace-static-x86_64: Process 20038 attached
[pid 20038] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20038] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20038] setpgid(0, 0)               = 0
[pid 20038] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20038] write(3, "1000", 4)         = 4
[pid 20038] close(3)                    = 0
[pid 20038] write(1, "executing program\n", 18executing program
) = 18
[pid 20038] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20038] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20038] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20038] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20038] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20038] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20038] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20039]}, 88) = 20039
[pid 20038] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20038] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20038] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20039 attached
 <unfinished ...>
[pid 20039] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20039] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20039] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20039] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20038] <... futex resumed>)        = 0
[pid 20038] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20038] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20039] <... futex resumed>)        = 1
[pid 20039] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20039] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20038] <... futex resumed>)        = 0
[pid 20038] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20038] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20039] <... futex resumed>)        = 1
[pid 20039] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20039] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20038] <... futex resumed>)        = 0
[pid 20038] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20038] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20039] <... futex resumed>)        = 1
[pid 20039] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20039] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20038] <... futex resumed>)        = 0
[pid 20038] exit_group(0)               = ?
[pid 20039] <... futex resumed>)        = ?
[pid 20039] +++ exited with 0 +++
[pid 20038] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20038, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20040 attached
, child_tidptr=0x55557c828690) = 20040
[pid 20040] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20040] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20040] setpgid(0, 0)               = 0
[pid 20040] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program
) = 3
[pid 20040] write(3, "1000", 4)         = 4
[pid 20040] close(3)                    = 0
[pid 20040] write(1, "executing program\n", 18) = 18
[pid 20040] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20040] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20040] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20040] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20040] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20040] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20040] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20041 attached
 => {parent_tid=[20041]}, 88) = 20041
[pid 20041] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20040] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20041] <... set_robust_list resumed>) = 0
[pid 20040] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20041] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20040] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20041] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20040] <... futex resumed>)        = 0
[pid 20041] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20040] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20041] <... 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 20041] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20040] <... futex resumed>)        = 0
[pid 20040] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20040] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20041] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20041] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20040] <... futex resumed>)        = 0
[pid 20040] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20040] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20041] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20041] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20040] <... futex resumed>)        = 0
[pid 20040] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20040] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20041] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20041] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20041] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20040] <... futex resumed>)        = 0
[pid 20040] exit_group(0)               = ?
[pid 20041] <... futex resumed>)        = ?
[pid 20041] +++ exited with 0 +++
[pid 20040] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20040, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20042
./strace-static-x86_64: Process 20042 attached
[pid 20042] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20042] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20042] setpgid(0, 0)               = 0
[pid 20042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20042] write(3, "1000", 4)         = 4
[pid 20042] close(3)                    = 0
executing program
[pid 20042] write(1, "executing program\n", 18) = 18
[pid 20042] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20042] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20042] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20042] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20042] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20042] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20042] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20043 attached
 => {parent_tid=[20043]}, 88) = 20043
[pid 20042] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20042] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20042] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20043] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20043] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20043] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20043] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20042] <... futex resumed>)        = 0
[pid 20042] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20042] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20043] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20043] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20042] <... futex resumed>)        = 0
[pid 20042] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20042] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20043] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20043] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20042] <... futex resumed>)        = 0
[pid 20042] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20042] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20043] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20043] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20042] <... futex resumed>)        = 0
[pid 20042] exit_group(0)               = ?
[pid 20043] +++ exited with 0 +++
[pid 20042] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20042, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20044
./strace-static-x86_64: Process 20044 attached
[pid 20044] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20044] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20044] setpgid(0, 0)               = 0
[pid 20044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20044] write(3, "1000", 4)         = 4
[pid 20044] close(3)                    = 0
executing program
[pid 20044] write(1, "executing program\n", 18) = 18
[pid 20044] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20044] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20044] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20044] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20044] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20044] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20044] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20045 attached
 => {parent_tid=[20045]}, 88) = 20045
[pid 20044] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20044] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20044] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20045] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20045] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20045] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20045] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20044] <... futex resumed>)        = 0
[pid 20044] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20044] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20045] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20045] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20045] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20044] <... futex resumed>)        = 0
[pid 20044] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20044] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20045] <... futex resumed>)        = 0
[pid 20045] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20045] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20044] <... futex resumed>)        = 0
[pid 20045] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20044] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20045] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20045] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20045] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20045] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
[pid 20044] <... futex resumed>)        = 1
[pid 20045] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20044] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 20044] exit_group(0 <unfinished ...>
[pid 20045] <... futex resumed>)        = ?
[pid 20044] <... exit_group resumed>)   = ?
[pid 20045] +++ exited with 0 +++
[pid 20044] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20044, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20046
./strace-static-x86_64: Process 20046 attached
[pid 20046] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20046] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20046] setpgid(0, 0)               = 0
[pid 20046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20046] write(3, "1000", 4)         = 4
executing program
[pid 20046] close(3)                    = 0
[pid 20046] write(1, "executing program\n", 18) = 18
[pid 20046] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20046] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20046] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20046] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20046] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20046] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20046] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20047]}, 88) = 20047
[pid 20046] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20046] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20046] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20047 attached
 <unfinished ...>
[pid 20047] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20047] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20047] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20047] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20046] <... futex resumed>)        = 0
[pid 20046] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20046] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20047] <... futex resumed>)        = 1
[pid 20047] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20047] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20046] <... futex resumed>)        = 0
[pid 20046] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20046] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20047] <... futex resumed>)        = 1
[pid 20047] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20047] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20046] <... futex resumed>)        = 0
[pid 20046] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20046] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20047] <... futex resumed>)        = 1
[pid 20047] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20047] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20046] <... futex resumed>)        = 0
[pid 20046] exit_group(0)               = ?
[pid 20047] <... futex resumed>)        = ?
[pid 20047] +++ exited with 0 +++
[pid 20046] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20046, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20048
./strace-static-x86_64: Process 20048 attached
[pid 20048] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20048] setpgid(0, 0)               = 0
[pid 20048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20048] write(3, "1000", 4)         = 4
[pid 20048] close(3)                    = 0
executing program
[pid 20048] write(1, "executing program\n", 18) = 18
[pid 20048] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20048] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20048] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20048] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20048] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20048] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20048] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20049]}, 88) = 20049
[pid 20048] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20048] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20048] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20049 attached
 <unfinished ...>
[pid 20049] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20049] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20049] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20049] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20049] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20048] <... futex resumed>)        = 0
[pid 20048] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20049] <... futex resumed>)        = 0
[pid 20049] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20048] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20049] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20048] <... futex resumed>)        = 0
[pid 20048] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20049] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20048] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20049] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20048] <... futex resumed>)        = 0
[pid 20048] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20048] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20049] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20049] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20048] <... futex resumed>)        = 0
[pid 20048] exit_group(0)               = ?
[pid 20049] +++ exited with 0 +++
[pid 20048] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20048, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20050 attached
, child_tidptr=0x55557c828690) = 20050
[pid 20050] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20050] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20050] setpgid(0, 0)               = 0
[pid 20050] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20050] write(3, "1000", 4)         = 4
[pid 20050] close(3)                    = 0
executing program
[pid 20050] write(1, "executing program\n", 18) = 18
[pid 20050] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20050] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20050] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20050] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20050] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20050] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20050] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20051 attached
 => {parent_tid=[20051]}, 88) = 20051
[pid 20051] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20051] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20051] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20050] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20050] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20051] <... futex resumed>)        = 0
[pid 20051] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20050] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20051] <... 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 20051] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20050] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20050] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20051] <... futex resumed>)        = 0
[pid 20050] <... futex resumed>)        = 0
[pid 20051] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20050] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20051] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20051] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20050] <... futex resumed>)        = 0
[pid 20050] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20050] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20051] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20051] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20050] <... futex resumed>)        = 0
[pid 20050] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20050] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20051] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20051] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20050] <... futex resumed>)        = 0
[pid 20050] exit_group(0)               = ?
[pid 20051] +++ exited with 0 +++
[pid 20050] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20050, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20052
./strace-static-x86_64: Process 20052 attached
[pid 20052] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20052] setpgid(0, 0)               = 0
[pid 20052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20052] write(3, "1000", 4)         = 4
[pid 20052] close(3executing program
)                    = 0
[pid 20052] write(1, "executing program\n", 18) = 18
[pid 20052] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20052] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20052] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20052] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20052] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20052] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20052] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20053 attached
 => {parent_tid=[20053]}, 88) = 20053
[pid 20052] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20052] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20052] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20053] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20053] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20053] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20053] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20052] <... futex resumed>)        = 0
[pid 20053] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20052] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20053] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20052] <... futex resumed>)        = 0
[pid 20053] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20052] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20053] <... futex resumed>)        = 0
[pid 20052] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20053] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20052] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20053] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20052] <... futex resumed>)        = 0
[pid 20053] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20052] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20053] <... futex resumed>)        = 0
[pid 20052] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20053] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20052] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20053] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20052] <... futex resumed>)        = 0
[pid 20053] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20052] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20053] <... futex resumed>)        = 0
[pid 20052] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20053] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20052] exit_group(0 <unfinished ...>
[pid 20053] <... futex resumed>)        = ?
[pid 20052] <... exit_group resumed>)   = ?
[pid 20053] +++ exited with 0 +++
[pid 20052] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20052, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20054 attached
, child_tidptr=0x55557c828690) = 20054
[pid 20054] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20054] setpgid(0, 0)               = 0
[pid 20054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20054] write(3, "1000", 4)         = 4
[pid 20054] close(3)                    = 0
executing program
[pid 20054] write(1, "executing program\n", 18) = 18
[pid 20054] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20054] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20054] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20054] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20054] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20054] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20054] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20055 attached
 => {parent_tid=[20055]}, 88) = 20055
[pid 20055] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20054] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20054] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20054] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20055] <... set_robust_list resumed>) = 0
[pid 20055] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20055] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20055] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20054] <... futex resumed>)        = 0
[pid 20055] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20054] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20055] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20054] <... futex resumed>)        = 0
[pid 20055] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20054] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20055] <... futex resumed>)        = 0
[pid 20054] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20055] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20054] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20055] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20054] <... futex resumed>)        = 0
[pid 20055] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20054] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20055] <... futex resumed>)        = 0
[pid 20054] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20055] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20054] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20055] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20054] <... futex resumed>)        = 0
[pid 20055] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20054] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20055] <... futex resumed>)        = 0
[pid 20054] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20055] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20054] exit_group(0 <unfinished ...>
[pid 20055] <... futex resumed>)        = ?
[pid 20054] <... exit_group resumed>)   = ?
[pid 20055] +++ exited with 0 +++
[pid 20054] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20054, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20056 attached
 <unfinished ...>
[pid 20056] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20056] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20056] setpgid(0, 0)               = 0
[pid 20056] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20056
[pid 20056] <... openat resumed>)       = 3
[pid 20056] write(3, "1000", 4)         = 4
[pid 20056] close(3)                    = 0
executing program
[pid 20056] write(1, "executing program\n", 18) = 18
[pid 20056] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20056] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20056] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20056] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20056] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20056] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20056] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20057 attached
 => {parent_tid=[20057]}, 88) = 20057
[pid 20056] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20057] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20056] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20057] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20056] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20057] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20056] <... futex resumed>)        = 0
[pid 20057] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20056] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20057] <... 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 20057] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20056] <... futex resumed>)        = 0
[pid 20057] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20056] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20057] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20056] <... futex resumed>)        = 0
[pid 20057] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20056] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20057] <... futex resumed>)        = 0
[pid 20056] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20057] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20056] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20057] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20056] <... futex resumed>)        = 0
[pid 20057] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20056] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20057] <... futex resumed>)        = 0
[pid 20056] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20057] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20056] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20057] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20056] <... futex resumed>)        = 0
[pid 20057] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20056] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20057] <... futex resumed>)        = 0
[pid 20056] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20057] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20056] exit_group(0 <unfinished ...>
[pid 20057] <... futex resumed>)        = ?
[pid 20056] <... exit_group resumed>)   = ?
[pid 20057] +++ exited with 0 +++
[pid 20056] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20056, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20058
./strace-static-x86_64: Process 20058 attached
[pid 20058] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20058] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20058] setpgid(0, 0)               = 0
[pid 20058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20058] write(3, "1000", 4executing program
)         = 4
[pid 20058] close(3)                    = 0
[pid 20058] write(1, "executing program\n", 18) = 18
[pid 20058] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20058] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20058] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20058] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20058] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20058] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20058] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20059]}, 88) = 20059
./strace-static-x86_64: Process 20059 attached
[pid 20058] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20059] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20058] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20058] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20058] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20059] <... set_robust_list resumed>) = 0
[pid 20059] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20059] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20059] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20058] <... futex resumed>)        = 0
[pid 20058] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20058] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20059] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20059] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20058] <... futex resumed>)        = 0
[pid 20058] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20058] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20059] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20059] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20058] <... futex resumed>)        = 0
[pid 20058] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20058] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20059] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20059] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20058] <... futex resumed>)        = 0
[pid 20058] exit_group(0)               = ?
[pid 20059] +++ exited with 0 +++
[pid 20058] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20058, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20060 attached
, child_tidptr=0x55557c828690) = 20060
[pid 20060] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20060] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20060] setpgid(0, 0)               = 0
[pid 20060] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20060] write(3, "1000", 4)         = 4
[pid 20060] close(3executing program
)                    = 0
[pid 20060] write(1, "executing program\n", 18) = 18
[pid 20060] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20060] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20060] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20060] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20060] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20060] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20060] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20061 attached
 => {parent_tid=[20061]}, 88) = 20061
[pid 20060] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20060] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20060] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20061] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20061] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20061] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20061] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20060] <... futex resumed>)        = 0
[pid 20060] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20060] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20061] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20061] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20060] <... futex resumed>)        = 0
[pid 20060] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20060] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20061] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20061] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20060] <... futex resumed>)        = 0
[pid 20060] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20060] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20061] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20061] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20060] <... futex resumed>)        = 0
[pid 20060] exit_group(0)               = ?
[pid 20061] +++ exited with 0 +++
[pid 20060] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20060, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20062
./strace-static-x86_64: Process 20062 attached
[pid 20062] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20062] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20062] setpgid(0, 0)               = 0
[pid 20062] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20062] write(3, "1000", 4)         = 4
[pid 20062] close(3)                    = 0
[pid 20062] write(1, "executing program\n", 18executing program
) = 18
[pid 20062] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20062] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20062] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20062] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20062] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20062] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20062] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20063 attached
 => {parent_tid=[20063]}, 88) = 20063
[pid 20062] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20062] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20062] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20063] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20063] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20063] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20063] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20062] <... futex resumed>)        = 0
[pid 20062] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20062] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20063] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20063] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20062] <... futex resumed>)        = 0
[pid 20062] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20062] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20063] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20063] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20062] <... futex resumed>)        = 0
[pid 20062] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20062] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20063] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20063] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20062] <... futex resumed>)        = 0
[pid 20062] exit_group(0)               = ?
[pid 20063] +++ exited with 0 +++
[pid 20062] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20062, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20064
./strace-static-x86_64: Process 20064 attached
[pid 20064] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20064] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20064] setpgid(0, 0)               = 0
[pid 20064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20064] write(3, "1000", 4)         = 4
executing program
[pid 20064] close(3)                    = 0
[pid 20064] write(1, "executing program\n", 18) = 18
[pid 20064] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20064] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20064] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20064] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20064] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20064] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20064] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20065 attached
 => {parent_tid=[20065]}, 88) = 20065
[pid 20065] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20064] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20065] <... set_robust_list resumed>) = 0
[pid 20064] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20065] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20064] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20065] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20064] <... futex resumed>)        = 0
[pid 20065] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20064] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20065] <... 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 20065] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20064] <... futex resumed>)        = 0
[pid 20065] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20064] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20065] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20064] <... futex resumed>)        = 0
[pid 20065] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20065] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20064] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 20064] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20065] <... futex resumed>)        = 0
[pid 20064] <... futex resumed>)        = 1
[pid 20065] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20064] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20065] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20065] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20064] <... futex resumed>)        = 0
[pid 20065] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20064] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20065] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20064] <... futex resumed>)        = 0
[pid 20065] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20064] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20065] <... futex resumed>)        = 0
[pid 20064] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20065] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20064] exit_group(0)               = ?
[pid 20065] <... futex resumed>)        = ?
[pid 20065] +++ exited with 0 +++
[pid 20064] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20064, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20066
./strace-static-x86_64: Process 20066 attached
[pid 20066] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20066] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20066] setpgid(0, 0)               = 0
[pid 20066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20066] write(3, "1000", 4)         = 4
[pid 20066] close(3)                    = 0
executing program
[pid 20066] write(1, "executing program\n", 18) = 18
[pid 20066] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20066] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20066] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20066] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20066] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20066] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20066] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20067]}, 88) = 20067
./strace-static-x86_64: Process 20067 attached
[pid 20066] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20066] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20066] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20067] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20067] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20067] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20067] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20066] <... futex resumed>)        = 0
[pid 20067] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20066] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20067] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20066] <... futex resumed>)        = 0
[pid 20067] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20066] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20067] <... futex resumed>)        = 0
[pid 20066] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20067] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20066] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20067] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20066] <... futex resumed>)        = 0
[pid 20067] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20066] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20067] <... futex resumed>)        = 0
[pid 20066] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20067] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20066] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20067] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20066] <... futex resumed>)        = 0
[pid 20067] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20066] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20067] <... futex resumed>)        = 0
[pid 20066] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20067] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20066] exit_group(0 <unfinished ...>
[pid 20067] <... futex resumed>)        = ?
[pid 20066] <... exit_group resumed>)   = ?
[pid 20067] +++ exited with 0 +++
[pid 20066] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20066, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20068
./strace-static-x86_64: Process 20068 attached
[pid 20068] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20068] setpgid(0, 0)               = 0
[pid 20068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20068] write(3, "1000", 4)         = 4
[pid 20068] close(3executing program
)                    = 0
[pid 20068] write(1, "executing program\n", 18) = 18
[pid 20068] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20068] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20068] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20068] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20068] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20068] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20068] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20069]}, 88) = 20069
[pid 20068] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20068] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20068] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20069 attached
 <unfinished ...>
[pid 20069] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20069] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20069] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20069] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20068] <... futex resumed>)        = 0
[pid 20068] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20068] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20069] <... futex resumed>)        = 1
[pid 20069] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20069] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20068] <... futex resumed>)        = 0
[pid 20068] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20068] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20069] <... futex resumed>)        = 1
[pid 20069] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20069] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20068] <... futex resumed>)        = 0
[pid 20068] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20068] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20069] <... futex resumed>)        = 1
[pid 20069] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20069] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20068] <... futex resumed>)        = 0
[pid 20068] exit_group(0)               = ?
[pid 20069] <... futex resumed>)        = ?
[pid 20069] +++ exited with 0 +++
[pid 20068] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20068, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20070
./strace-static-x86_64: Process 20070 attached
[pid 20070] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20070] setpgid(0, 0)               = 0
[pid 20070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20070] write(3, "1000", 4)         = 4
[pid 20070] close(3executing program
)                    = 0
[pid 20070] write(1, "executing program\n", 18) = 18
[pid 20070] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20070] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20070] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20070] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20070] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20070] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20070] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20071]}, 88) = 20071
[pid 20070] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20070] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20070] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20071 attached
 <unfinished ...>
[pid 20071] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20071] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20071] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20071] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20070] <... futex resumed>)        = 0
[pid 20070] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20070] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20071] <... futex resumed>)        = 1
[pid 20071] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20071] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20070] <... futex resumed>)        = 0
[pid 20070] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20070] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20071] <... futex resumed>)        = 1
[pid 20071] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20071] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20070] <... futex resumed>)        = 0
[pid 20070] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20070] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20071] <... futex resumed>)        = 1
[pid 20071] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20071] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20070] <... futex resumed>)        = 0
[pid 20070] exit_group(0)               = ?
[pid 20071] <... futex resumed>)        = ?
[pid 20071] +++ exited with 0 +++
[pid 20070] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20070, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20072
./strace-static-x86_64: Process 20072 attached
[pid 20072] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20072] setpgid(0, 0)               = 0
[pid 20072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20072] write(3, "1000", 4)         = 4
executing program
[pid 20072] close(3)                    = 0
[pid 20072] write(1, "executing program\n", 18) = 18
[pid 20072] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20072] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20072] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20072] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20072] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20072] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20072] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20073 attached
 => {parent_tid=[20073]}, 88) = 20073
[pid 20072] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20072] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20072] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20073] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20073] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20073] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20073] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20072] <... futex resumed>)        = 0
[pid 20072] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20072] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20073] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20073] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20072] <... futex resumed>)        = 0
[pid 20072] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20072] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20073] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20073] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20072] <... futex resumed>)        = 0
[pid 20072] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20072] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20073] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20073] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20072] <... futex resumed>)        = 0
[pid 20072] exit_group(0)               = ?
[pid 20073] +++ exited with 0 +++
[pid 20072] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20072, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20074
./strace-static-x86_64: Process 20074 attached
[pid 20074] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20074] setpgid(0, 0)               = 0
[pid 20074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20074] write(3, "1000", 4)         = 4
[pid 20074] close(3executing program
)                    = 0
[pid 20074] write(1, "executing program\n", 18) = 18
[pid 20074] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20074] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20074] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20074] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20074] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20074] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20074] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20075]}, 88) = 20075
[pid 20074] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20074] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20074] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20075 attached
 <unfinished ...>
[pid 20075] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20075] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20075] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20075] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20074] <... futex resumed>)        = 0
[pid 20074] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20074] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20075] <... futex resumed>)        = 1
[pid 20075] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20075] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20074] <... futex resumed>)        = 0
[pid 20074] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20074] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20075] <... futex resumed>)        = 1
[pid 20075] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20075] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20074] <... futex resumed>)        = 0
[pid 20074] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20074] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20075] <... futex resumed>)        = 1
[pid 20075] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20075] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20074] <... futex resumed>)        = 0
[pid 20074] exit_group(0)               = ?
[pid 20075] <... futex resumed>)        = ?
[pid 20075] +++ exited with 0 +++
[pid 20074] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20074, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20076
./strace-static-x86_64: Process 20076 attached
[pid 20076] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20076] setpgid(0, 0)               = 0
[pid 20076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20076] write(3, "1000", 4)         = 4
[pid 20076] close(3)                    = 0
executing program
[pid 20076] write(1, "executing program\n", 18) = 18
[pid 20076] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20076] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20076] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20076] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20076] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20076] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20076] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20077]}, 88) = 20077
./strace-static-x86_64: Process 20077 attached
[pid 20077] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20077] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20077] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20076] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20076] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20077] <... futex resumed>)        = 0
[pid 20077] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20076] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20077] <... 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 20077] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20077] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20076] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20076] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20077] <... futex resumed>)        = 0
[pid 20076] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20077] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20077] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20076] <... futex resumed>)        = 0
[pid 20076] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20076] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20077] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20077] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20076] <... futex resumed>)        = 0
[pid 20076] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20076] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20077] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20077] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20076] <... futex resumed>)        = 0
[pid 20076] exit_group(0)               = ?
[pid 20077] +++ exited with 0 +++
[pid 20076] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20076, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20078 attached
, child_tidptr=0x55557c828690) = 20078
[pid 20078] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20078] setpgid(0, 0)               = 0
[pid 20078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20078] write(3, "1000", 4)         = 4
[pid 20078] close(3)                    = 0
executing program
[pid 20078] write(1, "executing program\n", 18) = 18
[pid 20078] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20078] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20078] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20078] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20078] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20078] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20078] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20079]}, 88) = 20079
./strace-static-x86_64: Process 20079 attached
[pid 20078] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20078] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20078] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20079] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20079] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20079] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20079] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20079] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20078] <... futex resumed>)        = 0
[pid 20078] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20078] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20079] <... futex resumed>)        = 0
[pid 20079] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20079] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20078] <... futex resumed>)        = 0
[pid 20078] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20078] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20079] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20079] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20078] <... futex resumed>)        = 0
[pid 20078] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20078] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20079] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20079] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20078] <... futex resumed>)        = 0
[pid 20078] exit_group(0)               = ?
[pid 20079] +++ exited with 0 +++
[pid 20078] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20078, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20080
./strace-static-x86_64: Process 20080 attached
[pid 20080] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20080] setpgid(0, 0)               = 0
[pid 20080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20080] write(3, "1000", 4)         = 4
[pid 20080] close(3)                    = 0
[pid 20080] write(1, "executing program\n", 18executing program
) = 18
[pid 20080] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20080] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20080] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20080] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20080] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20080] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20080] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20081 attached
 => {parent_tid=[20081]}, 88) = 20081
[pid 20080] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20081] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20080] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20081] <... set_robust_list resumed>) = 0
[pid 20081] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20080] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20081] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20080] <... futex resumed>)        = 0
[pid 20081] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20080] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20081] <... 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 20081] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20080] <... futex resumed>)        = 0
[pid 20080] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20080] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20081] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20081] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20080] <... futex resumed>)        = 0
[pid 20080] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20080] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20081] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20081] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20080] <... futex resumed>)        = 0
[pid 20080] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20080] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20081] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20081] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20080] <... futex resumed>)        = 0
[pid 20080] exit_group(0)               = ?
[pid 20081] +++ exited with 0 +++
[pid 20080] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20080, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20082
./strace-static-x86_64: Process 20082 attached
[pid 20082] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20082] setpgid(0, 0)               = 0
[pid 20082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20082] write(3, "1000", 4)         = 4
[pid 20082] close(3executing program
)                    = 0
[pid 20082] write(1, "executing program\n", 18) = 18
[pid 20082] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20082] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20082] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20082] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20082] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20082] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20082] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20083 attached
 => {parent_tid=[20083]}, 88) = 20083
[pid 20083] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20082] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20083] <... set_robust_list resumed>) = 0
[pid 20082] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20083] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20082] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20083] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20082] <... futex resumed>)        = 0
[pid 20083] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20082] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20083] <... 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 20083] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20082] <... futex resumed>)        = 0
[pid 20083] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20082] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20083] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20082] <... futex resumed>)        = 0
[pid 20083] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20082] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20083] <... futex resumed>)        = 0
[pid 20082] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20083] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20082] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20083] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20082] <... futex resumed>)        = 0
[pid 20083] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20082] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20083] <... futex resumed>)        = 0
[pid 20082] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20083] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20082] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20083] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20082] <... futex resumed>)        = 0
[pid 20083] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20082] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20083] <... futex resumed>)        = 0
[pid 20082] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20083] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20082] exit_group(0 <unfinished ...>
[pid 20083] <... futex resumed>)        = ?
[pid 20082] <... exit_group resumed>)   = ?
[pid 20083] +++ exited with 0 +++
[pid 20082] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20082, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20084
./strace-static-x86_64: Process 20084 attached
[pid 20084] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20084] setpgid(0, 0)               = 0
[pid 20084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20084] write(3, "1000", 4)         = 4
[pid 20084] close(3executing program
)                    = 0
[pid 20084] write(1, "executing program\n", 18) = 18
[pid 20084] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20084] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20084] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20084] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20084] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20084] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20084] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20085 attached
 => {parent_tid=[20085]}, 88) = 20085
[pid 20085] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20084] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20084] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20084] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20085] <... set_robust_list resumed>) = 0
[pid 20085] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20085] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20085] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20084] <... futex resumed>)        = 0
[pid 20085] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20084] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20085] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20084] <... futex resumed>)        = 0
[pid 20085] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20084] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20085] <... futex resumed>)        = 0
[pid 20084] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20085] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20084] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20085] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20084] <... futex resumed>)        = 0
[pid 20085] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20084] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20085] <... futex resumed>)        = 0
[pid 20084] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20085] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20084] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20085] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20084] <... futex resumed>)        = 0
[pid 20085] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20084] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20085] <... futex resumed>)        = 0
[pid 20084] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20085] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20084] exit_group(0 <unfinished ...>
[pid 20085] <... futex resumed>)        = ?
[pid 20084] <... exit_group resumed>)   = ?
[pid 20085] +++ exited with 0 +++
[pid 20084] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20084, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20086 attached
 <unfinished ...>
[pid 20086] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20086] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20086
[pid 20086] <... prctl resumed>)        = 0
[pid 20086] setpgid(0, 0)               = 0
[pid 20086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20086] write(3, "1000", 4)         = 4
[pid 20086] close(3)                    = 0
[pid 20086] write(1, "executing program\n", 18executing program
) = 18
[pid 20086] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20086] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20086] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20086] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20086] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20086] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20086] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20087 attached
 => {parent_tid=[20087]}, 88) = 20087
[pid 20086] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20086] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20086] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20087] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20087] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20087] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20087] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20086] <... futex resumed>)        = 0
[pid 20087] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20086] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20087] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20086] <... futex resumed>)        = 0
[pid 20087] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20086] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20087] <... futex resumed>)        = 0
[pid 20086] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20087] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20086] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20087] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20086] <... futex resumed>)        = 0
[pid 20087] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20086] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20087] <... futex resumed>)        = 0
[pid 20086] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20087] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20086] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20087] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20086] <... futex resumed>)        = 0
[pid 20087] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20086] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20087] <... futex resumed>)        = 0
[pid 20086] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20087] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20086] exit_group(0 <unfinished ...>
[pid 20087] <... futex resumed>)        = ?
[pid 20086] <... exit_group resumed>)   = ?
[pid 20087] +++ exited with 0 +++
[pid 20086] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20086, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20088 attached
 <unfinished ...>
[pid 20088] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20088
[pid 20088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20088] setpgid(0, 0)               = 0
[pid 20088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20088] write(3, "1000", 4)         = 4
[pid 20088] close(3)                    = 0
[pid 20088] write(1, "executing program\n", 18executing program
) = 18
[pid 20088] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20088] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20088] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20088] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20088] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20088] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20088] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20089 attached
 => {parent_tid=[20089]}, 88) = 20089
[pid 20089] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20088] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20089] <... set_robust_list resumed>) = 0
[pid 20088] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20089] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20088] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20089] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20088] <... futex resumed>)        = 0
[pid 20089] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20088] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20089] <... 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 20089] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20089] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20088] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20088] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20089] <... futex resumed>)        = 0
[pid 20088] <... futex resumed>)        = 1
[pid 20089] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20088] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20089] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20089] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20088] <... futex resumed>)        = 0
[pid 20089] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20088] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20089] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20088] <... futex resumed>)        = 0
[pid 20089] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20088] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20089] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20089] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20088] <... futex resumed>)        = 0
[pid 20089] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20088] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20089] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20088] <... futex resumed>)        = 0
[pid 20089] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20088] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20089] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20089] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20088] <... futex resumed>)        = 0
[pid 20089] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20088] exit_group(0 <unfinished ...>
[pid 20089] <... futex resumed>)        = ?
[pid 20088] <... exit_group resumed>)   = ?
[pid 20089] +++ exited with 0 +++
[pid 20088] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20088, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20090 attached
, child_tidptr=0x55557c828690) = 20090
[pid 20090] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20090] setpgid(0, 0)               = 0
[pid 20090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20090] write(3, "1000", 4)         = 4
[pid 20090] close(3)                    = 0
[pid 20090] write(1, "executing program\n", 18executing program
) = 18
[pid 20090] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20090] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20090] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20090] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20090] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20090] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20090] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20091]}, 88) = 20091
[pid 20090] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20090] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20090] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20091 attached
 <unfinished ...>
[pid 20091] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20091] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20091] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20091] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20090] <... futex resumed>)        = 0
[pid 20091] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20090] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20091] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20090] <... futex resumed>)        = 0
[pid 20090] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20091] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20091] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20090] <... futex resumed>)        = 0
[pid 20090] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20090] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20091] <... futex resumed>)        = 1
[pid 20091] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20091] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20090] <... futex resumed>)        = 0
[pid 20090] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20090] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20091] <... futex resumed>)        = 1
[pid 20091] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20091] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20090] <... futex resumed>)        = 0
[pid 20090] exit_group(0)               = ?
[pid 20091] <... futex resumed>)        = ?
[pid 20091] +++ exited with 0 +++
[pid 20090] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20090, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20092
./strace-static-x86_64: Process 20092 attached
[pid 20092] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20092] setpgid(0, 0)               = 0
[pid 20092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20092] write(3, "1000", 4)         = 4
executing program
[pid 20092] close(3)                    = 0
[pid 20092] write(1, "executing program\n", 18) = 18
[pid 20092] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20092] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20092] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20092] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20092] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20092] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20092] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20093]}, 88) = 20093
[pid 20092] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20092] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20092] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20093 attached
 <unfinished ...>
[pid 20093] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20093] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20093] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20093] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20092] <... futex resumed>)        = 0
[pid 20092] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20092] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20093] <... futex resumed>)        = 1
[pid 20093] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20093] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20092] <... futex resumed>)        = 0
[pid 20092] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20092] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20093] <... futex resumed>)        = 1
[pid 20093] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20093] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20092] <... futex resumed>)        = 0
[pid 20092] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20092] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20093] <... futex resumed>)        = 1
[pid 20093] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20093] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20092] <... futex resumed>)        = 0
[pid 20092] exit_group(0)               = ?
[pid 20093] <... futex resumed>)        = ?
[pid 20093] +++ exited with 0 +++
[pid 20092] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20092, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20094
./strace-static-x86_64: Process 20094 attached
[pid 20094] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20094] setpgid(0, 0)               = 0
[pid 20094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20094] write(3, "1000", 4)         = 4
[pid 20094] close(3executing program
)                    = 0
[pid 20094] write(1, "executing program\n", 18) = 18
[pid 20094] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20094] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20094] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20094] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20094] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20094] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20094] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20095 attached
 => {parent_tid=[20095]}, 88) = 20095
[pid 20095] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20094] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20095] <... set_robust_list resumed>) = 0
[pid 20094] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20095] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20094] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20095] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20094] <... futex resumed>)        = 0
[pid 20095] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20094] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20095] <... 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 20095] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20094] <... futex resumed>)        = 0
[pid 20094] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20094] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20095] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20095] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20094] <... futex resumed>)        = 0
[pid 20094] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20094] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20095] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20095] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20094] <... futex resumed>)        = 0
[pid 20094] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20094] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20095] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20095] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20094] <... futex resumed>)        = 0
[pid 20094] exit_group(0)               = ?
[pid 20095] +++ exited with 0 +++
[pid 20094] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20094, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20096
./strace-static-x86_64: Process 20096 attached
[pid 20096] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20096] setpgid(0, 0)               = 0
[pid 20096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20096] write(3, "1000", 4)         = 4
[pid 20096] close(3executing program
)                    = 0
[pid 20096] write(1, "executing program\n", 18) = 18
[pid 20096] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20096] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20096] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20096] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20096] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20096] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20096] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20097 attached
 => {parent_tid=[20097]}, 88) = 20097
[pid 20097] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20096] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20096] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20097] <... set_robust_list resumed>) = 0
[pid 20096] <... futex resumed>)        = 0
[pid 20097] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20096] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20097] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20097] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20097] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20096] <... futex resumed>)        = 0
[pid 20096] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20096] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20097] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20097] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20096] <... futex resumed>)        = 0
[pid 20096] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20096] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20097] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20097] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20096] <... futex resumed>)        = 0
[pid 20096] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20096] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20097] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20097] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20096] <... futex resumed>)        = 0
[pid 20096] exit_group(0)               = ?
[pid 20097] +++ exited with 0 +++
[pid 20096] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20096, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20098
./strace-static-x86_64: Process 20098 attached
[pid 20098] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20098] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20098] setpgid(0, 0)               = 0
[pid 20098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20098] write(3, "1000", 4)         = 4
[pid 20098] close(3)                    = 0
executing program
[pid 20098] write(1, "executing program\n", 18) = 18
[pid 20098] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20098] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20098] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20098] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20098] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20098] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20098] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20099]}, 88) = 20099
./strace-static-x86_64: Process 20099 attached
[pid 20099] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20099] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20099] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20098] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20098] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20099] <... futex resumed>)        = 0
[pid 20099] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20098] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20099] <... 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 20099] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20098] <... futex resumed>)        = 0
[pid 20098] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20099] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20098] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20099] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20099] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20098] <... futex resumed>)        = 0
[pid 20098] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20098] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20099] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20099] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20098] <... futex resumed>)        = 0
[pid 20098] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20098] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20099] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20099] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20098] <... futex resumed>)        = 0
[pid 20099] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20098] exit_group(0 <unfinished ...>
[pid 20099] <... futex resumed>)        = ?
[pid 20098] <... exit_group resumed>)   = ?
[pid 20099] +++ exited with 0 +++
[pid 20098] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20098, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20100
./strace-static-x86_64: Process 20100 attached
[pid 20100] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20100] setpgid(0, 0)               = 0
[pid 20100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20100] write(3, "1000", 4)         = 4
[pid 20100] close(3)                    = 0
executing program
[pid 20100] write(1, "executing program\n", 18) = 18
[pid 20100] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20100] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20100] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20100] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20100] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20100] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20100] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20101 attached
 <unfinished ...>
[pid 20101] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20100] <... clone3 resumed> => {parent_tid=[20101]}, 88) = 20101
[pid 20101] <... set_robust_list resumed>) = 0
[pid 20101] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20101] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20100] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20100] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20101] <... futex resumed>)        = 0
[pid 20101] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20100] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20101] <... 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 20101] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20100] <... futex resumed>)        = 0
[pid 20100] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20100] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20101] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20101] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20100] <... futex resumed>)        = 0
[pid 20100] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20100] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20101] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20101] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20100] <... futex resumed>)        = 0
[pid 20100] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20100] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20101] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20101] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20100] <... futex resumed>)        = 0
[pid 20100] exit_group(0)               = ?
[pid 20101] +++ exited with 0 +++
[pid 20100] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20100, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20102
./strace-static-x86_64: Process 20102 attached
[pid 20102] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20102] setpgid(0, 0)               = 0
[pid 20102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20102] write(3, "1000", 4)         = 4
executing program
[pid 20102] close(3)                    = 0
[pid 20102] write(1, "executing program\n", 18) = 18
[pid 20102] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20102] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20102] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20102] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20102] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20102] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20102] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20103 attached
 => {parent_tid=[20103]}, 88) = 20103
[pid 20102] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20102] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20102] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20103] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20103] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20103] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20103] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20102] <... futex resumed>)        = 0
[pid 20102] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20102] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20103] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20103] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20102] <... futex resumed>)        = 0
[pid 20102] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20102] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20103] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20103] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20102] <... futex resumed>)        = 0
[pid 20102] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20102] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20103] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20103] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20102] <... futex resumed>)        = 0
[pid 20102] exit_group(0)               = ?
[pid 20103] +++ exited with 0 +++
[pid 20102] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20102, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20104 attached
 <unfinished ...>
[pid 20104] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20104
[pid 20104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20104] setpgid(0, 0)               = 0
[pid 20104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20104] write(3, "1000", 4)         = 4
[pid 20104] close(3)                    = 0
executing program
[pid 20104] write(1, "executing program\n", 18) = 18
[pid 20104] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20104] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20104] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20104] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20104] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20104] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20104] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20105]}, 88) = 20105
./strace-static-x86_64: Process 20105 attached
[pid 20104] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20105] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20104] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20104] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20105] <... set_robust_list resumed>) = 0
[pid 20105] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20105] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20105] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20104] <... futex resumed>)        = 0
[pid 20104] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20104] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20105] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20105] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20104] <... futex resumed>)        = 0
[pid 20104] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20104] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20105] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20105] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20104] <... futex resumed>)        = 0
[pid 20104] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20104] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20105] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20105] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20104] <... futex resumed>)        = 0
[pid 20104] exit_group(0)               = ?
[pid 20105] +++ exited with 0 +++
[pid 20104] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20104, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20106 attached
 <unfinished ...>
[pid 20106] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20106] setpgid(0, 0)               = 0
[pid 20106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20106
[pid 20106] <... openat resumed>)       = 3
[pid 20106] write(3, "1000", 4)         = 4
[pid 20106] close(3executing program
)                    = 0
[pid 20106] write(1, "executing program\n", 18) = 18
[pid 20106] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20106] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20106] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20106] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20106] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20106] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20106] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20107]}, 88) = 20107
[pid 20106] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20106] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20106] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20107 attached
 <unfinished ...>
[pid 20107] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20107] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20107] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20107] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20106] <... futex resumed>)        = 0
[pid 20106] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20106] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20107] <... futex resumed>)        = 1
[pid 20107] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20107] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20106] <... futex resumed>)        = 0
[pid 20106] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20106] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20107] <... futex resumed>)        = 1
[pid 20107] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20107] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20106] <... futex resumed>)        = 0
[pid 20106] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20106] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20107] <... futex resumed>)        = 1
[pid 20107] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20107] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20106] <... futex resumed>)        = 0
[pid 20106] exit_group(0 <unfinished ...>
[pid 20107] <... futex resumed>)        = 1
[pid 20106] <... exit_group resumed>)   = ?
[pid 20107] +++ exited with 0 +++
[pid 20106] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20106, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20108
./strace-static-x86_64: Process 20108 attached
[pid 20108] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20108] setpgid(0, 0)               = 0
[pid 20108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20108] write(3, "1000", 4)         = 4
[pid 20108] close(3)                    = 0
executing program
[pid 20108] write(1, "executing program\n", 18) = 18
[pid 20108] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20108] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20108] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20108] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20108] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20108] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20108] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20109]}, 88) = 20109
./strace-static-x86_64: Process 20109 attached
[pid 20109] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20109] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20109] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20108] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20108] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20109] <... futex resumed>)        = 0
[pid 20109] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20108] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20109] <... 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 20109] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20108] <... futex resumed>)        = 0
[pid 20108] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20108] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20109] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20109] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20108] <... futex resumed>)        = 0
[pid 20108] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20108] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20109] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20109] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20108] <... futex resumed>)        = 0
[pid 20108] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20108] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20109] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20109] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20108] <... futex resumed>)        = 0
[pid 20108] exit_group(0)               = ?
[pid 20109] +++ exited with 0 +++
[pid 20108] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20108, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20110
./strace-static-x86_64: Process 20110 attached
[pid 20110] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20110] setpgid(0, 0)               = 0
[pid 20110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20110] write(3, "1000", 4)         = 4
executing program
[pid 20110] close(3)                    = 0
[pid 20110] write(1, "executing program\n", 18) = 18
[pid 20110] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20110] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20110] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20110] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20110] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20110] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20110] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20111 attached
 => {parent_tid=[20111]}, 88) = 20111
[pid 20110] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20111] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20111] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20111] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20110] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20110] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20111] <... futex resumed>)        = 0
[pid 20111] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20110] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20111] <... 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 20111] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20111] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20110] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20110] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20111] <... futex resumed>)        = 0
[pid 20111] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20110] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20111] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20110] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20111] <... futex resumed>)        = 0
[pid 20111] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20110] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20111] <... futex resumed>)        = 0
[pid 20111] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20110] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20111] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20110] <... futex resumed>)        = 0
[pid 20110] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20110] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20111] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20111] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20110] <... futex resumed>)        = 0
[pid 20110] exit_group(0)               = ?
[pid 20111] +++ exited with 0 +++
[pid 20110] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20110, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20112
./strace-static-x86_64: Process 20112 attached
[pid 20112] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20112] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20112] setpgid(0, 0)               = 0
[pid 20112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20112] write(3, "1000", 4)         = 4
[pid 20112] close(3)                    = 0
executing program
[pid 20112] write(1, "executing program\n", 18) = 18
[pid 20112] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20112] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20112] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20112] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20112] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20112] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20112] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20113 attached
 => {parent_tid=[20113]}, 88) = 20113
[pid 20113] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20112] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20113] <... set_robust_list resumed>) = 0
[pid 20113] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20112] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20113] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20112] <... futex resumed>)        = 0
[pid 20113] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20112] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20113] <... 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 20113] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20112] <... futex resumed>)        = 0
[pid 20112] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20113] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20112] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20113] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20113] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20112] <... futex resumed>)        = 0
[pid 20113] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20112] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20113] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20112] <... futex resumed>)        = 0
[pid 20113] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20112] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20113] <... futex resumed>)        = 0
[pid 20112] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20113] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20112] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20113] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20112] <... futex resumed>)        = 0
[pid 20113] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20112] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20113] <... futex resumed>)        = 0
[pid 20112] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20113] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20112] exit_group(0 <unfinished ...>
[pid 20113] <... futex resumed>)        = ?
[pid 20112] <... exit_group resumed>)   = ?
[pid 20113] +++ exited with 0 +++
[pid 20112] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20112, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20114
./strace-static-x86_64: Process 20114 attached
[pid 20114] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20114] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20114] setpgid(0, 0)               = 0
[pid 20114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20114] write(3, "1000", 4)         = 4
executing program
[pid 20114] close(3)                    = 0
[pid 20114] write(1, "executing program\n", 18) = 18
[pid 20114] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20114] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20114] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20114] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20114] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20114] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20114] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20115 attached
 => {parent_tid=[20115]}, 88) = 20115
[pid 20114] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20114] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20114] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20115] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20115] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20115] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20115] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20115] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20114] <... futex resumed>)        = 0
[pid 20114] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20115] <... futex resumed>)        = 0
[pid 20114] <... futex resumed>)        = 1
[pid 20115] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20114] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20115] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20115] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20115] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20114] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20114] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20115] <... futex resumed>)        = 0
[pid 20114] <... futex resumed>)        = 1
[pid 20115] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20114] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20115] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20115] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20114] <... futex resumed>)        = 0
[pid 20115] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20114] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20114] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20115] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20115] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20114] <... futex resumed>)        = 0
[pid 20115] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20114] exit_group(0 <unfinished ...>
[pid 20115] <... futex resumed>)        = ?
[pid 20114] <... exit_group resumed>)   = ?
[pid 20115] +++ exited with 0 +++
[pid 20114] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20114, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20116
./strace-static-x86_64: Process 20116 attached
[pid 20116] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20116] setpgid(0, 0)               = 0
[pid 20116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20116] write(3, "1000", 4)         = 4
[pid 20116] close(3)                    = 0
[pid 20116] write(1, "executing program\n", 18executing program
) = 18
[pid 20116] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20116] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20116] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20116] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20116] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20116] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20116] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20117]}, 88) = 20117
[pid 20116] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20116] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20116] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20117 attached
 <unfinished ...>
[pid 20117] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20117] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20117] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20117] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20116] <... futex resumed>)        = 0
[pid 20117] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20116] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20117] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20116] <... futex resumed>)        = 0
[pid 20117] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20116] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20117] <... futex resumed>)        = 0
[pid 20116] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20117] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20116] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20117] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20116] <... futex resumed>)        = 0
[pid 20117] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20116] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20117] <... futex resumed>)        = 0
[pid 20116] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20117] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20116] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20117] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20116] <... futex resumed>)        = 0
[pid 20117] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20116] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20117] <... futex resumed>)        = 0
[pid 20116] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20117] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20116] exit_group(0 <unfinished ...>
[pid 20117] <... futex resumed>)        = ?
[pid 20116] <... exit_group resumed>)   = ?
[pid 20117] +++ exited with 0 +++
[pid 20116] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20116, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20118
./strace-static-x86_64: Process 20118 attached
[pid 20118] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20118] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20118] setpgid(0, 0)               = 0
[pid 20118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20118] write(3, "1000", 4)         = 4
[pid 20118] close(3)                    = 0
[pid 20118] write(1, "executing program\n", 18executing program
) = 18
[pid 20118] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20118] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20118] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20118] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20118] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20118] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20118] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20119]}, 88) = 20119
./strace-static-x86_64: Process 20119 attached
[pid 20118] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20118] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20118] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20119] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20119] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20119] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20119] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20118] <... futex resumed>)        = 0
[pid 20119] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20118] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20119] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20118] <... futex resumed>)        = 0
[pid 20119] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20118] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20119] <... futex resumed>)        = 0
[pid 20118] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20119] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20118] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20119] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20118] <... futex resumed>)        = 0
[pid 20119] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20118] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20119] <... futex resumed>)        = 0
[pid 20118] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20118] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20119] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20118] <... futex resumed>)        = 0
[pid 20119] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20118] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20119] <... futex resumed>)        = 0
[pid 20118] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20119] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20118] exit_group(0 <unfinished ...>
[pid 20119] <... futex resumed>)        = ?
[pid 20118] <... exit_group resumed>)   = ?
[pid 20119] +++ exited with 0 +++
[pid 20118] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20118, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20120
./strace-static-x86_64: Process 20120 attached
[pid 20120] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20120] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20120] setpgid(0, 0)               = 0
[pid 20120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20120] write(3, "1000", 4)         = 4
[pid 20120] close(3)                    = 0
[pid 20120] write(1, "executing program\n", 18executing program
) = 18
[pid 20120] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20120] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20120] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20120] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20120] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20120] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20120] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20121 attached
 => {parent_tid=[20121]}, 88) = 20121
[pid 20121] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20121] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20121] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20120] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20120] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20121] <... futex resumed>)        = 0
[pid 20120] <... futex resumed>)        = 1
[pid 20121] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20120] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20121] <... 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 20121] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20120] <... futex resumed>)        = 0
[pid 20121] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20120] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20121] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20120] <... futex resumed>)        = 0
[pid 20121] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20120] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20121] <... futex resumed>)        = 0
[pid 20120] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20121] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20120] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20121] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20120] <... futex resumed>)        = 0
[pid 20121] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20120] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20121] <... futex resumed>)        = 0
[pid 20120] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20121] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20120] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20121] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20120] <... futex resumed>)        = 0
[pid 20121] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20120] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20121] <... futex resumed>)        = 0
[pid 20120] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20121] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20120] exit_group(0 <unfinished ...>
[pid 20121] <... futex resumed>)        = ?
[pid 20120] <... exit_group resumed>)   = ?
[pid 20121] +++ exited with 0 +++
[pid 20120] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20120, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20122
./strace-static-x86_64: Process 20122 attached
[pid 20122] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20122] setpgid(0, 0)               = 0
[pid 20122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20122] write(3, "1000", 4)         = 4
[pid 20122] close(3)                    = 0
[pid 20122] write(1, "executing program\n", 18executing program
) = 18
[pid 20122] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20122] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20122] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20122] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20122] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20122] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20122] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20123]}, 88) = 20123
[pid 20122] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20122] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20122] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20123 attached
 <unfinished ...>
[pid 20123] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20123] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20123] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20123] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20122] <... futex resumed>)        = 0
[pid 20122] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20122] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20123] <... futex resumed>)        = 1
[pid 20123] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20123] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20122] <... futex resumed>)        = 0
[pid 20122] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20122] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20123] <... futex resumed>)        = 1
[pid 20123] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20123] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20122] <... futex resumed>)        = 0
[pid 20122] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20122] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20123] <... futex resumed>)        = 1
[pid 20123] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20123] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20122] <... futex resumed>)        = 0
[pid 20122] exit_group(0)               = ?
[pid 20123] <... futex resumed>)        = ?
[pid 20123] +++ exited with 0 +++
[pid 20122] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20122, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20124
./strace-static-x86_64: Process 20124 attached
[pid 20124] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20124] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20124] setpgid(0, 0)               = 0
[pid 20124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20124] write(3, "1000", 4)         = 4
executing program
[pid 20124] close(3)                    = 0
[pid 20124] write(1, "executing program\n", 18) = 18
[pid 20124] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20124] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20124] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20124] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20124] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20124] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20124] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20125 attached
 => {parent_tid=[20125]}, 88) = 20125
[pid 20125] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20124] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20125] <... set_robust_list resumed>) = 0
[pid 20124] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20125] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20124] <... futex resumed>)        = 0
[pid 20125] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20124] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20125] <... 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 20125] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20124] <... futex resumed>)        = 0
[pid 20124] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20124] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20125] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20125] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20124] <... futex resumed>)        = 0
[pid 20124] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20124] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20125] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20125] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20124] <... futex resumed>)        = 0
[pid 20124] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20124] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20125] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20125] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20124] <... futex resumed>)        = 0
[pid 20124] exit_group(0)               = ?
[pid 20125] +++ exited with 0 +++
[pid 20124] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20124, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20126
./strace-static-x86_64: Process 20126 attached
[pid 20126] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20126] setpgid(0, 0)               = 0
[pid 20126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20126] write(3, "1000", 4)         = 4
[pid 20126] close(3)                    = 0
[pid 20126] write(1, "executing program\n", 18executing program
) = 18
[pid 20126] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20126] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20126] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20126] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20126] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20126] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20126] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20127]}, 88) = 20127
[pid 20126] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20126] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20126] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20127 attached
 <unfinished ...>
[pid 20127] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20127] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20127] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20127] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20127] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20126] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20126] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20127] <... futex resumed>)        = 0
[pid 20127] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20126] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20127] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20127] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20126] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20126] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20127] <... futex resumed>)        = 0
[pid 20127] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20126] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20127] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20127] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20126] <... futex resumed>)        = 0
[pid 20126] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20126] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20127] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20127] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20126] <... futex resumed>)        = 0
[pid 20126] exit_group(0)               = ?
[pid 20127] +++ exited with 0 +++
[pid 20126] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20126, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20128
./strace-static-x86_64: Process 20128 attached
[pid 20128] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20128] setpgid(0, 0)               = 0
[pid 20128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20128] write(3, "1000", 4)         = 4
[pid 20128] close(3)                    = 0
[pid 20128] write(1, "executing program\n", 18executing program
) = 18
[pid 20128] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20128] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20128] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20128] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20128] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20128] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20128] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20129 attached
 => {parent_tid=[20129]}, 88) = 20129
[pid 20128] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20128] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20128] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20129] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20129] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20129] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20129] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20128] <... futex resumed>)        = 0
[pid 20128] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20128] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20129] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20129] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20128] <... futex resumed>)        = 0
[pid 20128] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20129] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20128] <... futex resumed>)        = 0
[pid 20129] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20128] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20129] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20128] <... futex resumed>)        = 0
[pid 20129] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20128] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20129] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20128] <... futex resumed>)        = 0
[pid 20129] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20128] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20129] <... futex resumed>)        = 0
[pid 20128] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20129] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20128] exit_group(0 <unfinished ...>
[pid 20129] <... futex resumed>)        = ?
[pid 20128] <... exit_group resumed>)   = ?
[pid 20129] +++ exited with 0 +++
[pid 20128] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20128, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20130
./strace-static-x86_64: Process 20130 attached
[pid 20130] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20130] setpgid(0, 0)               = 0
[pid 20130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20130] write(3, "1000", 4)         = 4
[pid 20130] close(3)                    = 0
[pid 20130] write(1, "executing program\n", 18executing program
) = 18
[pid 20130] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20130] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20130] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20130] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20130] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20130] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20130] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20131 attached
 => {parent_tid=[20131]}, 88) = 20131
[pid 20130] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20131] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20131] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20131] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20130] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20130] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20131] <... futex resumed>)        = 0
[pid 20130] <... futex resumed>)        = 1
[pid 20131] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20130] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20131] <... 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 20131] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20131] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20130] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20130] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20131] <... futex resumed>)        = 0
[pid 20130] <... futex resumed>)        = 1
[pid 20131] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20130] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20131] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20131] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20130] <... futex resumed>)        = 0
[pid 20131] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20130] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20131] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20130] <... futex resumed>)        = 0
[pid 20131] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20130] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20131] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20131] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20130] <... futex resumed>)        = 0
[pid 20131] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20130] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20131] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20130] <... futex resumed>)        = 0
[pid 20131] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20130] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20131] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20131] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20130] <... futex resumed>)        = 0
[pid 20131] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20130] exit_group(0 <unfinished ...>
[pid 20131] <... futex resumed>)        = ?
[pid 20130] <... exit_group resumed>)   = ?
[pid 20131] +++ exited with 0 +++
[pid 20130] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20130, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20132 attached
, child_tidptr=0x55557c828690) = 20132
[pid 20132] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20132] setpgid(0, 0)               = 0
[pid 20132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20132] write(3, "1000", 4)         = 4
[pid 20132] close(3executing program
)                    = 0
[pid 20132] write(1, "executing program\n", 18) = 18
[pid 20132] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20132] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20132] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20132] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20132] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20132] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20132] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20133]}, 88) = 20133
./strace-static-x86_64: Process 20133 attached
[pid 20132] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20133] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20133] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20133] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20132] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20132] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20133] <... futex resumed>)        = 0
[pid 20132] <... futex resumed>)        = 1
[pid 20132] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20133] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20133] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20132] <... futex resumed>)        = 0
[pid 20133] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20132] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20133] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20132] <... futex resumed>)        = 0
[pid 20133] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20132] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20133] <... futex resumed>)        = 0
[pid 20132] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20133] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20132] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20133] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20132] <... futex resumed>)        = 0
[pid 20132] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20133] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20132] <... futex resumed>)        = 0
[pid 20133] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20132] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20133] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20132] <... futex resumed>)        = 0
[pid 20133] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20132] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20133] <... futex resumed>)        = 0
[pid 20132] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20133] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20132] exit_group(0 <unfinished ...>
[pid 20133] <... futex resumed>)        = ?
[pid 20132] <... exit_group resumed>)   = ?
[pid 20133] +++ exited with 0 +++
[pid 20132] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20132, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20134
./strace-static-x86_64: Process 20134 attached
[pid 20134] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20134] setpgid(0, 0)               = 0
[pid 20134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20134] write(3, "1000", 4)         = 4
[pid 20134] close(3executing program
)                    = 0
[pid 20134] write(1, "executing program\n", 18) = 18
[pid 20134] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20134] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20134] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20134] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20134] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20134] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20134] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20135 attached
 => {parent_tid=[20135]}, 88) = 20135
[pid 20135] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20134] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20135] <... set_robust_list resumed>) = 0
[pid 20134] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20135] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20134] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20135] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20134] <... futex resumed>)        = 0
[pid 20135] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20134] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20135] <... 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 20135] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20134] <... futex resumed>)        = 0
[pid 20135] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20134] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20135] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20134] <... futex resumed>)        = 0
[pid 20135] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20134] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20135] <... futex resumed>)        = 0
[pid 20134] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20135] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20134] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20135] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20134] <... futex resumed>)        = 0
[pid 20135] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20134] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20135] <... futex resumed>)        = 0
[pid 20134] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20135] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20134] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20135] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20134] <... futex resumed>)        = 0
[pid 20135] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20134] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20135] <... futex resumed>)        = 0
[pid 20134] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20135] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20134] exit_group(0 <unfinished ...>
[pid 20135] <... futex resumed>)        = ?
[pid 20134] <... exit_group resumed>)   = ?
[pid 20135] +++ exited with 0 +++
[pid 20134] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20134, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20136 attached
 <unfinished ...>
[pid 20136] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20136
[pid 20136] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20136] setpgid(0, 0)               = 0
[pid 20136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20136] write(3, "1000", 4)         = 4
[pid 20136] close(3executing program
)                    = 0
[pid 20136] write(1, "executing program\n", 18) = 18
[pid 20136] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20136] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20136] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20136] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20136] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20136] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20136] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20137 attached
 => {parent_tid=[20137]}, 88) = 20137
[pid 20137] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20137] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20137] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20136] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20136] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20137] <... futex resumed>)        = 0
[pid 20136] <... futex resumed>)        = 1
[pid 20137] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20136] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20137] <... 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 20137] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20136] <... futex resumed>)        = 0
[pid 20137] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20136] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20137] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20136] <... futex resumed>)        = 0
[pid 20137] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20136] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20137] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20137] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20136] <... futex resumed>)        = 0
[pid 20137] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20136] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20137] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20136] <... futex resumed>)        = 0
[pid 20137] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20136] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20137] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20137] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20136] <... futex resumed>)        = 0
[pid 20137] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20136] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20137] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20136] <... futex resumed>)        = 0
[pid 20137] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20136] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20137] <... futex resumed>)        = 0
[pid 20136] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20137] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20136] exit_group(0 <unfinished ...>
[pid 20137] <... futex resumed>)        = ?
[pid 20136] <... exit_group resumed>)   = ?
[pid 20137] +++ exited with 0 +++
[pid 20136] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20136, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20138
./strace-static-x86_64: Process 20138 attached
[pid 20138] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20138] setpgid(0, 0)               = 0
[pid 20138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20138] write(3, "1000", 4)         = 4
[pid 20138] close(3)                    = 0
[pid 20138] write(1, "executing program\n", 18executing program
) = 18
[pid 20138] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20138] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20138] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20138] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20138] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20138] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20138] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20139]}, 88) = 20139
./strace-static-x86_64: Process 20139 attached
[pid 20139] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20139] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20139] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20138] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20138] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20139] <... futex resumed>)        = 0
[pid 20138] <... futex resumed>)        = 1
[pid 20139] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20138] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20139] <... 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 20139] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20138] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20139] <... futex resumed>)        = 0
[pid 20138] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20139] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20138] <... futex resumed>)        = 0
[pid 20139] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20138] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20139] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20139] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20138] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20138] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20139] <... futex resumed>)        = 0
[pid 20138] <... futex resumed>)        = 1
[pid 20139] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20138] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20139] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20139] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20138] <... futex resumed>)        = 0
[pid 20139] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20138] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20139] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20138] <... futex resumed>)        = 0
[pid 20139] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20138] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20139] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20139] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20138] <... futex resumed>)        = 0
[pid 20139] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20138] exit_group(0 <unfinished ...>
[pid 20139] <... futex resumed>)        = ?
[pid 20138] <... exit_group resumed>)   = ?
[pid 20139] +++ exited with 0 +++
[pid 20138] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20138, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20140 attached
, child_tidptr=0x55557c828690) = 20140
[pid 20140] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20140] setpgid(0, 0)               = 0
[pid 20140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20140] write(3, "1000", 4)         = 4
executing program
[pid 20140] close(3)                    = 0
[pid 20140] write(1, "executing program\n", 18) = 18
[pid 20140] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20140] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20140] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20140] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20140] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20140] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20140] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20141]}, 88) = 20141
[pid 20140] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20140] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20140] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20141 attached
 <unfinished ...>
[pid 20141] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20141] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20141] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20141] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20140] <... futex resumed>)        = 0
[pid 20140] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20140] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20141] <... futex resumed>)        = 1
[pid 20141] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20141] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20140] <... futex resumed>)        = 0
[pid 20140] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20140] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20141] <... futex resumed>)        = 1
[pid 20141] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20141] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20140] <... futex resumed>)        = 0
[pid 20140] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20140] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20141] <... futex resumed>)        = 1
[pid 20141] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20141] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20140] <... futex resumed>)        = 0
[pid 20140] exit_group(0)               = ?
[pid 20141] <... futex resumed>)        = ?
[pid 20141] +++ exited with 0 +++
[pid 20140] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20140, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20142 attached
, child_tidptr=0x55557c828690) = 20142
[pid 20142] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20142] setpgid(0, 0)               = 0
[pid 20142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20142] write(3, "1000", 4)         = 4
[pid 20142] close(3executing program
)                    = 0
[pid 20142] write(1, "executing program\n", 18) = 18
[pid 20142] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20142] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20142] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20142] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20142] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20142] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20142] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20143 attached
 => {parent_tid=[20143]}, 88) = 20143
[pid 20143] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20143] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20143] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20142] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20142] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20143] <... futex resumed>)        = 0
[pid 20143] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20142] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20143] <... 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 20143] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20142] <... futex resumed>)        = 0
[pid 20142] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20142] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20143] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20143] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20142] <... futex resumed>)        = 0
[pid 20142] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20142] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20143] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20143] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20142] <... futex resumed>)        = 0
[pid 20142] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20142] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20143] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20143] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20143] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20142] <... futex resumed>)        = 0
[pid 20142] exit_group(0 <unfinished ...>
[pid 20143] <... futex resumed>)        = ?
[pid 20142] <... exit_group resumed>)   = ?
[pid 20143] +++ exited with 0 +++
[pid 20142] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20142, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20144
./strace-static-x86_64: Process 20144 attached
[pid 20144] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20144] setpgid(0, 0)               = 0
[pid 20144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20144] write(3, "1000", 4)         = 4
[pid 20144] close(3)                    = 0
executing program
[pid 20144] write(1, "executing program\n", 18) = 18
[pid 20144] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20144] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20144] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20144] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20144] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20144] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20144] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20145 attached
 => {parent_tid=[20145]}, 88) = 20145
[pid 20145] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20144] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20145] <... set_robust_list resumed>) = 0
[pid 20144] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20145] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20144] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20145] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20145] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20145] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20144] <... futex resumed>)        = 0
[pid 20144] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20144] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20145] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20145] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20144] <... futex resumed>)        = 0
[pid 20144] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20144] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20145] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20145] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20144] <... futex resumed>)        = 0
[pid 20144] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20144] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20145] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20145] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20144] <... futex resumed>)        = 0
[pid 20144] exit_group(0)               = ?
[pid 20145] +++ exited with 0 +++
[pid 20144] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20144, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20146
./strace-static-x86_64: Process 20146 attached
[pid 20146] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20146] setpgid(0, 0)               = 0
[pid 20146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20146] write(3, "1000", 4)         = 4
[pid 20146] close(3)                    = 0
[pid 20146] write(1, "executing program\n", 18executing program
) = 18
[pid 20146] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20146] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20146] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20146] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20146] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20146] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20146] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20147]}, 88) = 20147
./strace-static-x86_64: Process 20147 attached
[pid 20146] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20147] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20146] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20147] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20146] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20147] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20146] <... futex resumed>)        = 0
[pid 20147] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20147] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20147] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20146] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 20146] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20147] <... futex resumed>)        = 0
[pid 20147] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20147] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20147] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20146] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 20146] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20147] <... futex resumed>)        = 0
[pid 20147] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20147] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20147] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20146] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 20146] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20147] <... futex resumed>)        = 0
[pid 20147] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20146] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20147] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20146] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20147] <... futex resumed>)        = 0
[pid 20146] exit_group(0 <unfinished ...>
[pid 20147] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20146] <... exit_group resumed>)   = ?
[pid 20147] <... futex resumed>)        = ?
[pid 20147] +++ exited with 0 +++
[pid 20146] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20146, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20148
./strace-static-x86_64: Process 20148 attached
[pid 20148] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20148] setpgid(0, 0)               = 0
[pid 20148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20148] write(3, "1000", 4)         = 4
[pid 20148] close(3)                    = 0
[pid 20148] write(1, "executing program\n", 18executing program
) = 18
[pid 20148] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20148] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20148] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20148] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20148] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20148] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20148] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20149 attached
 => {parent_tid=[20149]}, 88) = 20149
[pid 20149] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20149] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20148] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20149] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20149] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20148] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20148] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20149] <... futex resumed>)        = 0
[pid 20149] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20148] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20149] <... 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 20149] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20148] <... futex resumed>)        = 0
[pid 20148] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20148] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20149] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20149] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20148] <... futex resumed>)        = 0
[pid 20148] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20148] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20149] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20149] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20148] <... futex resumed>)        = 0
[pid 20148] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20148] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20149] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20149] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20148] <... futex resumed>)        = 0
[pid 20148] exit_group(0)               = ?
[pid 20149] +++ exited with 0 +++
[pid 20148] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20148, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20150
./strace-static-x86_64: Process 20150 attached
[pid 20150] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20150] setpgid(0, 0)               = 0
[pid 20150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20150] write(3, "1000", 4)         = 4
[pid 20150] close(3)                    = 0
executing program
[pid 20150] write(1, "executing program\n", 18) = 18
[pid 20150] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20150] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20150] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20150] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20150] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20150] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20150] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20151 attached
 => {parent_tid=[20151]}, 88) = 20151
[pid 20151] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20150] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20151] <... set_robust_list resumed>) = 0
[pid 20150] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20151] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20150] <... futex resumed>)        = 0
[pid 20151] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20150] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20151] <... 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 20151] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20150] <... futex resumed>)        = 0
[pid 20150] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20150] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20151] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20151] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20150] <... futex resumed>)        = 0
[pid 20150] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20150] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20151] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20151] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20150] <... futex resumed>)        = 0
[pid 20150] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20150] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20151] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20151] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20150] <... futex resumed>)        = 0
[pid 20150] exit_group(0)               = ?
[pid 20151] +++ exited with 0 +++
[pid 20150] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20150, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20152
./strace-static-x86_64: Process 20152 attached
[pid 20152] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20152] setpgid(0, 0)               = 0
[pid 20152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20152] write(3, "1000", 4)         = 4
[pid 20152] close(3executing program
)                    = 0
[pid 20152] write(1, "executing program\n", 18) = 18
[pid 20152] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20152] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20152] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20152] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20152] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20152] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20152] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20153]}, 88) = 20153
[pid 20152] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20152] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20152] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20153 attached
 <unfinished ...>
[pid 20153] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20153] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20153] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20153] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20152] <... futex resumed>)        = 0
[pid 20152] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20152] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20153] <... futex resumed>)        = 1
[pid 20153] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20153] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20152] <... futex resumed>)        = 0
[pid 20152] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20152] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20153] <... futex resumed>)        = 1
[pid 20153] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20153] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20152] <... futex resumed>)        = 0
[pid 20152] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20152] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20153] <... futex resumed>)        = 1
[pid 20153] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20153] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20152] <... futex resumed>)        = 0
[pid 20152] exit_group(0)               = ?
[pid 20153] <... futex resumed>)        = ?
[pid 20153] +++ exited with 0 +++
[pid 20152] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20152, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20154
./strace-static-x86_64: Process 20154 attached
[pid 20154] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20154] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20154] setpgid(0, 0)               = 0
[pid 20154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20154] write(3, "1000", 4)         = 4
[pid 20154] close(3)                    = 0
executing program
[pid 20154] write(1, "executing program\n", 18) = 18
[pid 20154] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20154] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20154] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20154] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20154] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20154] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20154] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20155 attached
 => {parent_tid=[20155]}, 88) = 20155
[pid 20154] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20154] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20154] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20155] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20155] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20155] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20155] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20154] <... futex resumed>)        = 0
[pid 20154] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20154] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20155] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20155] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20154] <... futex resumed>)        = 0
[pid 20154] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20154] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20155] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20155] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20154] <... futex resumed>)        = 0
[pid 20154] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20154] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20155] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20155] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20154] <... futex resumed>)        = 0
[pid 20154] exit_group(0)               = ?
[pid 20155] +++ exited with 0 +++
[pid 20154] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20154, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20156
./strace-static-x86_64: Process 20156 attached
[pid 20156] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20156] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20156] setpgid(0, 0)               = 0
[pid 20156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20156] write(3, "1000", 4)         = 4
[pid 20156] close(3)                    = 0
executing program
[pid 20156] write(1, "executing program\n", 18) = 18
[pid 20156] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20156] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20156] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20156] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20156] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20156] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20156] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20157]}, 88) = 20157
[pid 20156] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20156] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20156] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20157 attached
 <unfinished ...>
[pid 20157] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20157] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20157] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20157] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20156] <... futex resumed>)        = 0
[pid 20156] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20156] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20157] <... futex resumed>)        = 1
[pid 20157] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20157] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20156] <... futex resumed>)        = 0
[pid 20156] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20156] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20157] <... futex resumed>)        = 1
[pid 20157] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20157] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20156] <... futex resumed>)        = 0
[pid 20156] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20156] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20157] <... futex resumed>)        = 1
[pid 20157] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20157] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20156] <... futex resumed>)        = 0
[pid 20156] exit_group(0)               = ?
[pid 20157] <... futex resumed>)        = ?
[pid 20157] +++ exited with 0 +++
[pid 20156] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20156, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20158 attached
, child_tidptr=0x55557c828690) = 20158
[pid 20158] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20158] setpgid(0, 0)               = 0
[pid 20158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20158] write(3, "1000", 4)         = 4
[pid 20158] close(3)                    = 0
[pid 20158] write(1, "executing program\n", 18executing program
) = 18
[pid 20158] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20158] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20158] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20158] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20158] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20158] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20158] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20159 attached
 => {parent_tid=[20159]}, 88) = 20159
[pid 20158] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20158] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20158] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20159] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20159] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20159] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20159] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20158] <... futex resumed>)        = 0
[pid 20158] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20158] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20159] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20159] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20158] <... futex resumed>)        = 0
[pid 20158] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20158] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20159] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20159] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20158] <... futex resumed>)        = 0
[pid 20158] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20158] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20159] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20159] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20159] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20158] <... futex resumed>)        = 0
[pid 20158] exit_group(0)               = ?
[pid 20159] <... futex resumed>)        = ?
[pid 20159] +++ exited with 0 +++
[pid 20158] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20158, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20160 attached
, child_tidptr=0x55557c828690) = 20160
[pid 20160] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20160] setpgid(0, 0)               = 0
[pid 20160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20160] write(3, "1000", 4)         = 4
[pid 20160] close(3)                    = 0
[pid 20160] write(1, "executing program\n", 18executing program
) = 18
[pid 20160] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20160] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20160] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20160] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20160] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20160] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20160] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20161]}, 88) = 20161
[pid 20160] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20160] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20160] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20161 attached
 <unfinished ...>
[pid 20161] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20161] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20161] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20161] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20160] <... futex resumed>)        = 0
[pid 20160] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20160] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20161] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20161] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20160] <... futex resumed>)        = 0
[pid 20160] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20160] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20161] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20161] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20160] <... futex resumed>)        = 0
[pid 20160] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20160] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20161] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20161] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20160] <... futex resumed>)        = 0
[pid 20160] exit_group(0)               = ?
[pid 20161] +++ exited with 0 +++
[pid 20160] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20160, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20162
./strace-static-x86_64: Process 20162 attached
[pid 20162] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20162] setpgid(0, 0)               = 0
[pid 20162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20162] write(3, "1000", 4)         = 4
[pid 20162] close(3executing program
)                    = 0
[pid 20162] write(1, "executing program\n", 18) = 18
[pid 20162] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20162] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20162] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20162] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20162] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20162] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20162] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20163]}, 88) = 20163
[pid 20162] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20162] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20162] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20163 attached
 <unfinished ...>
[pid 20163] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20163] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20163] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20163] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20162] <... futex resumed>)        = 0
[pid 20162] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20162] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20163] <... futex resumed>)        = 1
[pid 20163] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20163] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20162] <... futex resumed>)        = 0
[pid 20162] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20162] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20163] <... futex resumed>)        = 1
[pid 20163] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20163] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20162] <... futex resumed>)        = 0
[pid 20162] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20162] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20163] <... futex resumed>)        = 1
[pid 20163] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20163] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20162] <... futex resumed>)        = 0
[pid 20162] exit_group(0)               = ?
[pid 20163] <... futex resumed>)        = ?
[pid 20163] +++ exited with 0 +++
[pid 20162] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20162, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20164
./strace-static-x86_64: Process 20164 attached
[pid 20164] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20164] setpgid(0, 0)               = 0
[pid 20164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20164] write(3, "1000", 4)         = 4
[pid 20164] close(3)                    = 0
[pid 20164] write(1, "executing program\n", 18executing program
) = 18
[pid 20164] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20164] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20164] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20164] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20164] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20164] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20164] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20165]}, 88) = 20165
[pid 20164] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20164] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20164] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20165 attached
 <unfinished ...>
[pid 20165] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20165] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20165] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20165] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20164] <... futex resumed>)        = 0
[pid 20164] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20164] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20165] <... futex resumed>)        = 1
[pid 20165] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20165] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20164] <... futex resumed>)        = 0
[pid 20164] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20164] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20165] <... futex resumed>)        = 1
[pid 20165] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20165] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20164] <... futex resumed>)        = 0
[pid 20164] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20164] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20165] <... futex resumed>)        = 1
[pid 20165] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20165] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20164] <... futex resumed>)        = 0
[pid 20164] exit_group(0)               = ?
[pid 20165] <... futex resumed>)        = ?
[pid 20165] +++ exited with 0 +++
[pid 20164] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20164, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20166 attached
, child_tidptr=0x55557c828690) = 20166
[pid 20166] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20166] setpgid(0, 0)               = 0
[pid 20166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20166] write(3, "1000", 4)         = 4
[pid 20166] close(3)                    = 0
[pid 20166] write(1, "executing program\n", 18executing program
) = 18
[pid 20166] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20166] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20166] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20166] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20166] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20166] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20166] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20167]}, 88) = 20167
[pid 20166] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20166] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20166] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20167 attached
 <unfinished ...>
[pid 20167] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20167] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20167] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20167] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20166] <... futex resumed>)        = 0
[pid 20166] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20166] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20167] <... futex resumed>)        = 1
[pid 20167] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20167] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20166] <... futex resumed>)        = 0
[pid 20166] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20166] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20167] <... futex resumed>)        = 1
[pid 20167] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20167] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20166] <... futex resumed>)        = 0
[pid 20166] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20166] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20167] <... futex resumed>)        = 1
[pid 20167] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20167] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20166] <... futex resumed>)        = 0
[pid 20166] exit_group(0)               = ?
[pid 20167] <... futex resumed>)        = ?
[pid 20167] +++ exited with 0 +++
[pid 20166] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20166, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20168
./strace-static-x86_64: Process 20168 attached
[pid 20168] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20168] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20168] setpgid(0, 0)               = 0
[pid 20168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20168] write(3, "1000", 4)         = 4
[pid 20168] close(3)                    = 0
executing program
[pid 20168] write(1, "executing program\n", 18) = 18
[pid 20168] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20168] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20168] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20168] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20168] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20168] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20168] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20169 attached
 => {parent_tid=[20169]}, 88) = 20169
[pid 20169] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20168] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20169] <... set_robust_list resumed>) = 0
[pid 20168] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20169] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20168] <... futex resumed>)        = 0
[pid 20169] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20168] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20169] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20169] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20168] <... futex resumed>)        = 0
[pid 20168] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20168] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20169] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20169] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20168] <... futex resumed>)        = 0
[pid 20168] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20168] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20169] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20169] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20168] <... futex resumed>)        = 0
[pid 20168] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20168] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20169] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20169] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20168] <... futex resumed>)        = 0
[pid 20168] exit_group(0)               = ?
[pid 20169] +++ exited with 0 +++
[pid 20168] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20168, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20170
./strace-static-x86_64: Process 20170 attached
[pid 20170] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20170] setpgid(0, 0)               = 0
[pid 20170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20170] write(3, "1000", 4)         = 4
[pid 20170] close(3executing program
)                    = 0
[pid 20170] write(1, "executing program\n", 18) = 18
[pid 20170] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20170] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20170] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20170] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20170] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20170] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20170] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20171]}, 88) = 20171
[pid 20170] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20170] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20170] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20171 attached
 <unfinished ...>
[pid 20171] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20171] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20171] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20171] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20170] <... futex resumed>)        = 0
[pid 20170] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20170] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20171] <... futex resumed>)        = 1
[pid 20171] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20171] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20170] <... futex resumed>)        = 0
[pid 20170] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20170] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20171] <... futex resumed>)        = 1
[pid 20171] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20171] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20170] <... futex resumed>)        = 0
[pid 20170] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20170] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20171] <... futex resumed>)        = 1
[pid 20171] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20171] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20170] <... futex resumed>)        = 0
[pid 20170] exit_group(0)               = ?
[pid 20171] <... futex resumed>)        = ?
[pid 20171] +++ exited with 0 +++
[pid 20170] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20170, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20172
./strace-static-x86_64: Process 20172 attached
[pid 20172] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20172] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20172] setpgid(0, 0)               = 0
[pid 20172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20172] write(3, "1000", 4)         = 4
[pid 20172] close(3executing program
)                    = 0
[pid 20172] write(1, "executing program\n", 18) = 18
[pid 20172] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20172] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20172] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20172] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20172] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20172] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20172] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20173 attached
 => {parent_tid=[20173]}, 88) = 20173
[pid 20173] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20172] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20173] <... set_robust_list resumed>) = 0
[pid 20172] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20173] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20172] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20173] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20172] <... futex resumed>)        = 0
[pid 20173] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20172] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20173] <... 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 20173] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20172] <... futex resumed>)        = 0
[pid 20172] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20172] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20173] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20173] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20172] <... futex resumed>)        = 0
[pid 20172] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20172] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20173] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20173] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20172] <... futex resumed>)        = 0
[pid 20172] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20172] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20173] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20173] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20173] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20172] <... futex resumed>)        = 0
[pid 20172] exit_group(0)               = ?
[pid 20173] <... futex resumed>)        = ?
[pid 20173] +++ exited with 0 +++
[pid 20172] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20172, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20174
./strace-static-x86_64: Process 20174 attached
[pid 20174] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20174] setpgid(0, 0)               = 0
[pid 20174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20174] write(3, "1000", 4)         = 4
[pid 20174] close(3executing program
)                    = 0
[pid 20174] write(1, "executing program\n", 18) = 18
[pid 20174] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20174] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20174] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20174] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20174] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20174] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20174] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20175]}, 88) = 20175
./strace-static-x86_64: Process 20175 attached
[pid 20174] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20174] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20174] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20175] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20175] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20175] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20175] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20175] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20174] <... futex resumed>)        = 0
[pid 20174] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20174] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20175] <... futex resumed>)        = 0
[pid 20175] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20175] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20175] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20174] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20174] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20174] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20175] <... futex resumed>)        = 0
[pid 20175] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20175] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20174] <... futex resumed>)        = 0
[pid 20174] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20174] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20175] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20175] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20174] <... futex resumed>)        = 0
[pid 20174] exit_group(0)               = ?
[pid 20175] +++ exited with 0 +++
[pid 20174] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20174, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20176
./strace-static-x86_64: Process 20176 attached
[pid 20176] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20176] setpgid(0, 0)               = 0
[pid 20176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20176] write(3, "1000", 4)         = 4
[pid 20176] close(3executing program
)                    = 0
[pid 20176] write(1, "executing program\n", 18) = 18
[pid 20176] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20176] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20176] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20176] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20176] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20176] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20176] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20177]}, 88) = 20177
./strace-static-x86_64: Process 20177 attached
[pid 20176] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20176] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20176] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20177] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20177] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20177] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20177] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20176] <... futex resumed>)        = 0
[pid 20177] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20176] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20177] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20176] <... futex resumed>)        = 0
[pid 20177] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20176] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20177] <... futex resumed>)        = 0
[pid 20176] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20177] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20176] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20177] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20176] <... futex resumed>)        = 0
[pid 20177] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20176] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20177] <... futex resumed>)        = 0
[pid 20176] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20177] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20176] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20176] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20177] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20177] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20176] <... futex resumed>)        = 0
[pid 20177] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20176] exit_group(0 <unfinished ...>
[pid 20177] <... futex resumed>)        = ?
[pid 20176] <... exit_group resumed>)   = ?
[pid 20177] +++ exited with 0 +++
[pid 20176] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20176, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20178 attached
 <unfinished ...>
[pid 20178] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20178
[pid 20178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20178] setpgid(0, 0)               = 0
[pid 20178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20178] write(3, "1000", 4)         = 4
[pid 20178] close(3)                    = 0
[pid 20178] write(1, "executing program\n", 18executing program
) = 18
[pid 20178] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20178] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20178] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20178] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20178] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20178] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20178] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20179 attached
 => {parent_tid=[20179]}, 88) = 20179
[pid 20179] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20178] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20178] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20178] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20179] <... set_robust_list resumed>) = 0
[pid 20179] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20179] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20179] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20178] <... futex resumed>)        = 0
[pid 20179] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20178] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20179] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20178] <... futex resumed>)        = 0
[pid 20179] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20178] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20179] <... futex resumed>)        = 0
[pid 20178] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20179] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20178] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20179] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20178] <... futex resumed>)        = 0
[pid 20179] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20178] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20179] <... futex resumed>)        = 0
[pid 20178] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20179] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20178] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20179] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20178] <... futex resumed>)        = 0
[pid 20178] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20179] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20178] <... futex resumed>)        = 0
[pid 20179] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20178] exit_group(0 <unfinished ...>
[pid 20179] <... futex resumed>)        = ?
[pid 20178] <... exit_group resumed>)   = ?
[pid 20179] +++ exited with 0 +++
[pid 20178] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20178, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20180
./strace-static-x86_64: Process 20180 attached
[pid 20180] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20180] setpgid(0, 0)               = 0
[pid 20180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20180] write(3, "1000", 4)         = 4
[pid 20180] close(3)                    = 0
executing program
[pid 20180] write(1, "executing program\n", 18) = 18
[pid 20180] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20180] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20180] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20180] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20180] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20180] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20180] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20181]}, 88) = 20181
[pid 20180] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20180] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20180] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20181 attached
 <unfinished ...>
[pid 20181] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20181] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20181] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20181] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20180] <... futex resumed>)        = 0
[pid 20180] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20180] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20181] <... futex resumed>)        = 1
[pid 20181] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20181] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20180] <... futex resumed>)        = 0
[pid 20180] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20180] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20181] <... futex resumed>)        = 1
[pid 20181] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20181] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20180] <... futex resumed>)        = 0
[pid 20180] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20180] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20181] <... futex resumed>)        = 1
[pid 20181] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20181] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20180] <... futex resumed>)        = 0
[pid 20180] exit_group(0)               = ?
[pid 20181] <... futex resumed>)        = ?
[pid 20181] +++ exited with 0 +++
[pid 20180] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20180, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20182
./strace-static-x86_64: Process 20182 attached
[pid 20182] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20182] setpgid(0, 0)               = 0
[pid 20182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20182] write(3, "1000", 4)         = 4
[pid 20182] close(3)                    = 0
executing program
[pid 20182] write(1, "executing program\n", 18) = 18
[pid 20182] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20182] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20182] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20182] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20182] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20182] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20182] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20183 attached
 => {parent_tid=[20183]}, 88) = 20183
[pid 20183] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20182] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20183] <... set_robust_list resumed>) = 0
[pid 20182] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20183] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20182] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20183] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20182] <... futex resumed>)        = 0
[pid 20183] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20182] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20183] <... 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 20183] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20182] <... futex resumed>)        = 0
[pid 20182] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20182] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20183] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20183] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20182] <... futex resumed>)        = 0
[pid 20182] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20182] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20183] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20183] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20182] <... futex resumed>)        = 0
[pid 20182] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20182] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20183] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20183] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20182] <... futex resumed>)        = 0
[pid 20182] exit_group(0)               = ?
[pid 20183] +++ exited with 0 +++
[pid 20182] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20182, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20184 attached
, child_tidptr=0x55557c828690) = 20184
[pid 20184] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20184] setpgid(0, 0)               = 0
[pid 20184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20184] write(3, "1000", 4)         = 4
[pid 20184] close(3executing program
)                    = 0
[pid 20184] write(1, "executing program\n", 18) = 18
[pid 20184] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20184] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20184] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20184] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20184] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20184] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20184] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20185]}, 88) = 20185
[pid 20184] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20184] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20184] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20185 attached
 <unfinished ...>
[pid 20185] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20185] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20185] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20185] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20184] <... futex resumed>)        = 0
[pid 20184] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20184] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20185] <... futex resumed>)        = 1
[pid 20185] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20185] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20184] <... futex resumed>)        = 0
[pid 20184] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20184] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20185] <... futex resumed>)        = 1
[pid 20185] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20185] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20184] <... futex resumed>)        = 0
[pid 20184] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20184] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20185] <... futex resumed>)        = 1
[pid 20185] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20185] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20184] <... futex resumed>)        = 0
[pid 20184] exit_group(0)               = ?
[pid 20185] <... futex resumed>)        = ?
[pid 20185] +++ exited with 0 +++
[pid 20184] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20184, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20186 attached
, child_tidptr=0x55557c828690) = 20186
[pid 20186] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20186] setpgid(0, 0)               = 0
[pid 20186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20186] write(3, "1000", 4executing program
)         = 4
[pid 20186] close(3)                    = 0
[pid 20186] write(1, "executing program\n", 18) = 18
[pid 20186] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20186] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20186] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20186] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20186] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20186] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20186] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20187]}, 88) = 20187
./strace-static-x86_64: Process 20187 attached
[pid 20187] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20186] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20187] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20186] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20187] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20186] <... futex resumed>)        = 0
[pid 20187] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20186] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20187] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20187] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20186] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20186] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20187] <... futex resumed>)        = 0
[pid 20187] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20186] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20187] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20186] <... futex resumed>)        = 0
[pid 20186] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20186] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20187] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20187] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20186] <... futex resumed>)        = 0
[pid 20186] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20186] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20187] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20187] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20186] <... futex resumed>)        = 0
[pid 20186] exit_group(0)               = ?
[pid 20187] +++ exited with 0 +++
[pid 20186] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20186, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20188
./strace-static-x86_64: Process 20188 attached
[pid 20188] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20188] setpgid(0, 0)               = 0
[pid 20188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20188] write(3, "1000", 4)         = 4
[pid 20188] close(3)                    = 0
[pid 20188] write(1, "executing program\n", 18executing program
) = 18
[pid 20188] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20188] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20188] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20188] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20188] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20188] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20188] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20189 attached
 => {parent_tid=[20189]}, 88) = 20189
[pid 20189] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20189] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20189] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20188] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20188] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20189] <... futex resumed>)        = 0
[pid 20188] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20189] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20189] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20189] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20188] <... futex resumed>)        = 0
[pid 20188] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20188] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20189] <... futex resumed>)        = 0
[pid 20189] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20189] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20188] <... futex resumed>)        = 0
[pid 20188] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20188] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20189] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20189] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20188] <... futex resumed>)        = 0
[pid 20188] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20188] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20189] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20189] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20188] <... futex resumed>)        = 0
[pid 20188] exit_group(0)               = ?
[pid 20189] +++ exited with 0 +++
[pid 20188] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20188, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20190
./strace-static-x86_64: Process 20190 attached
[pid 20190] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20190] setpgid(0, 0)               = 0
[pid 20190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20190] write(3, "1000", 4)         = 4
[pid 20190] close(3executing program
)                    = 0
[pid 20190] write(1, "executing program\n", 18) = 18
[pid 20190] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20190] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20190] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20190] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20190] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20190] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20190] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20191 attached
 => {parent_tid=[20191]}, 88) = 20191
[pid 20191] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20190] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20191] <... set_robust_list resumed>) = 0
[pid 20190] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20191] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20190] <... futex resumed>)        = 0
[pid 20191] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20190] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20191] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20191] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20191] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20190] <... futex resumed>)        = 0
[pid 20190] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20190] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20191] <... futex resumed>)        = 0
[pid 20191] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20191] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20190] <... futex resumed>)        = 0
[pid 20190] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20190] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20191] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20191] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20190] <... futex resumed>)        = 0
[pid 20190] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20190] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20191] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20191] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20190] <... futex resumed>)        = 0
[pid 20190] exit_group(0)               = ?
[pid 20191] +++ exited with 0 +++
[pid 20190] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20190, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20192
./strace-static-x86_64: Process 20192 attached
[pid 20192] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20192] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20192] setpgid(0, 0)               = 0
[pid 20192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20192] write(3, "1000", 4)         = 4
[pid 20192] close(3executing program
)                    = 0
[pid 20192] write(1, "executing program\n", 18) = 18
[pid 20192] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20192] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20192] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20192] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20192] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20192] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20192] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20193]}, 88) = 20193
./strace-static-x86_64: Process 20193 attached
[pid 20192] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20192] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20192] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20193] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20193] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20193] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20193] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20192] <... futex resumed>)        = 0
[pid 20192] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20192] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20193] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20193] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20192] <... futex resumed>)        = 0
[pid 20192] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20192] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20193] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20193] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20192] <... futex resumed>)        = 0
[pid 20192] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20192] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20193] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20193] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20192] <... futex resumed>)        = 0
[pid 20192] exit_group(0)               = ?
[pid 20193] +++ exited with 0 +++
[pid 20192] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20192, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20194
./strace-static-x86_64: Process 20194 attached
[pid 20194] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20194] setpgid(0, 0)               = 0
[pid 20194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20194] write(3, "1000", 4)         = 4
[pid 20194] close(3)                    = 0
executing program
[pid 20194] write(1, "executing program\n", 18) = 18
[pid 20194] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20194] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20194] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20194] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20194] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20194] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20194] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20195]}, 88) = 20195
[pid 20194] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20194] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20194] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20195 attached
 <unfinished ...>
[pid 20195] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20195] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20195] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20195] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20194] <... futex resumed>)        = 0
[pid 20194] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20194] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20195] <... futex resumed>)        = 1
[pid 20195] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20195] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20194] <... futex resumed>)        = 0
[pid 20194] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20194] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20195] <... futex resumed>)        = 1
[pid 20195] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20195] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20194] <... futex resumed>)        = 0
[pid 20194] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20194] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20195] <... futex resumed>)        = 1
[pid 20195] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20195] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20194] <... futex resumed>)        = 0
[pid 20194] exit_group(0)               = ?
[pid 20195] <... futex resumed>)        = ?
[pid 20195] +++ exited with 0 +++
[pid 20194] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20194, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20196
./strace-static-x86_64: Process 20196 attached
[pid 20196] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20196] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20196] setpgid(0, 0)               = 0
[pid 20196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20196] write(3, "1000", 4)         = 4
executing program
[pid 20196] close(3)                    = 0
[pid 20196] write(1, "executing program\n", 18) = 18
[pid 20196] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20196] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20196] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20196] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20196] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20196] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20196] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20197 attached
 => {parent_tid=[20197]}, 88) = 20197
[pid 20196] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20196] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20196] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20197] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20197] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20197] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20197] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20196] <... futex resumed>)        = 0
[pid 20196] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20196] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20197] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20197] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20196] <... futex resumed>)        = 0
[pid 20196] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20196] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20197] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20197] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20196] <... futex resumed>)        = 0
[pid 20196] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20196] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20197] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20197] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20197] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20196] <... futex resumed>)        = 0
[pid 20196] exit_group(0)               = ?
[pid 20197] <... futex resumed>)        = ?
[pid 20197] +++ exited with 0 +++
[pid 20196] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20196, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20198
./strace-static-x86_64: Process 20198 attached
[pid 20198] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20198] setpgid(0, 0)               = 0
[pid 20198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20198] write(3, "1000", 4)         = 4
[pid 20198] close(3executing program
)                    = 0
[pid 20198] write(1, "executing program\n", 18) = 18
[pid 20198] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20198] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20198] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20198] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20198] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20198] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20198] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20199 attached
 => {parent_tid=[20199]}, 88) = 20199
[pid 20198] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20198] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20198] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20199] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20199] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20199] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20199] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20198] <... futex resumed>)        = 0
[pid 20198] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20198] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20199] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20199] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20198] <... futex resumed>)        = 0
[pid 20198] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20198] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20199] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20199] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20198] <... futex resumed>)        = 0
[pid 20198] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20198] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20199] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20199] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20198] <... futex resumed>)        = 0
[pid 20198] exit_group(0)               = ?
[pid 20199] +++ exited with 0 +++
[pid 20198] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20198, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20200
./strace-static-x86_64: Process 20200 attached
[pid 20200] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20200] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20200] setpgid(0, 0)               = 0
[pid 20200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20200] write(3, "1000", 4)         = 4
[pid 20200] close(3)                    = 0
executing program
[pid 20200] write(1, "executing program\n", 18) = 18
[pid 20200] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20200] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20200] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20200] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20200] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20200] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20200] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20201]}, 88) = 20201
[pid 20200] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20200] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20200] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20201 attached
 <unfinished ...>
[pid 20201] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20201] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20201] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20201] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20200] <... futex resumed>)        = 0
[pid 20200] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20200] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20201] <... futex resumed>)        = 1
[pid 20201] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20201] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20200] <... futex resumed>)        = 0
[pid 20200] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20200] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20201] <... futex resumed>)        = 1
[pid 20201] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20201] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20200] <... futex resumed>)        = 0
[pid 20200] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20200] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20201] <... futex resumed>)        = 1
[pid 20201] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20201] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20200] <... futex resumed>)        = 0
[pid 20200] exit_group(0 <unfinished ...>
[pid 20201] <... futex resumed>)        = 1
[pid 20200] <... exit_group resumed>)   = ?
[pid 20201] +++ exited with 0 +++
[pid 20200] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20200, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20202
./strace-static-x86_64: Process 20202 attached
[pid 20202] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20202] setpgid(0, 0)               = 0
[pid 20202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20202] write(3, "1000", 4)         = 4
[pid 20202] close(3executing program
)                    = 0
[pid 20202] write(1, "executing program\n", 18) = 18
[pid 20202] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20202] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20202] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20202] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20202] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20202] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20202] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20203 attached
 <unfinished ...>
[pid 20203] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20202] <... clone3 resumed> => {parent_tid=[20203]}, 88) = 20203
[pid 20202] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20203] <... set_robust_list resumed>) = 0
[pid 20202] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20203] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20202] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20203] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20202] <... futex resumed>)        = 0
[pid 20203] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20202] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20203] <... 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 20203] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20202] <... futex resumed>)        = 0
[pid 20202] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20202] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20203] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20203] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20202] <... futex resumed>)        = 0
[pid 20202] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20202] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20203] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20203] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20202] <... futex resumed>)        = 0
[pid 20202] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20202] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20203] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20203] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20202] <... futex resumed>)        = 0
[pid 20202] exit_group(0)               = ?
[pid 20203] +++ exited with 0 +++
[pid 20202] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20202, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20204
./strace-static-x86_64: Process 20204 attached
[pid 20204] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20204] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20204] setpgid(0, 0)               = 0
[pid 20204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20204] write(3, "1000", 4)         = 4
[pid 20204] close(3)                    = 0
[pid 20204] write(1, "executing program\n", 18executing program
) = 18
[pid 20204] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20204] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20204] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20204] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20204] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20204] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20204] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20205]}, 88) = 20205
./strace-static-x86_64: Process 20205 attached
[pid 20205] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20205] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20205] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20204] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20204] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20205] <... futex resumed>)        = 0
[pid 20205] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20204] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20205] <... 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 20205] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20204] <... futex resumed>)        = 0
[pid 20204] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20204] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20205] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20205] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20204] <... futex resumed>)        = 0
[pid 20204] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20204] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20205] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20205] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20204] <... futex resumed>)        = 0
[pid 20204] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20204] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20205] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20205] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20204] <... futex resumed>)        = 0
[pid 20204] exit_group(0)               = ?
[pid 20205] +++ exited with 0 +++
[pid 20204] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20204, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20206 attached
 <unfinished ...>
[pid 20206] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20206] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20206
[pid 20206] <... prctl resumed>)        = 0
[pid 20206] setpgid(0, 0)               = 0
[pid 20206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20206] write(3, "1000", 4)         = 4
[pid 20206] close(3)                    = 0
[pid 20206] write(1, "executing program\n", 18executing program
) = 18
[pid 20206] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20206] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20206] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20206] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20206] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20206] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20206] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20207]}, 88) = 20207
./strace-static-x86_64: Process 20207 attached
[pid 20206] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20207] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20206] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20207] <... set_robust_list resumed>) = 0
[pid 20206] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20207] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20206] <... futex resumed>)        = 0
[pid 20206] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20207] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20207] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20207] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20206] <... futex resumed>)        = 0
[pid 20206] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20206] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20207] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20207] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20206] <... futex resumed>)        = 0
[pid 20206] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20207] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20206] <... futex resumed>)        = 0
[pid 20207] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20206] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20207] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20206] <... futex resumed>)        = 0
[pid 20206] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20206] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20207] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20207] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20206] <... futex resumed>)        = 0
[pid 20206] exit_group(0)               = ?
[pid 20207] +++ exited with 0 +++
[pid 20206] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20206, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20208 attached
 <unfinished ...>
[pid 20208] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20208] setpgid(0, 0)               = 0
[pid 20208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20208
[pid 20208] <... openat resumed>)       = 3
[pid 20208] write(3, "1000", 4)         = 4
[pid 20208] close(3executing program
)                    = 0
[pid 20208] write(1, "executing program\n", 18) = 18
[pid 20208] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20208] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20208] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20208] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20208] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20208] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20208] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20209]}, 88) = 20209
./strace-static-x86_64: Process 20209 attached
[pid 20208] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20208] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20208] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20209] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20209] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20209] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20209] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20209] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20208] <... futex resumed>)        = 0
[pid 20208] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20208] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20209] <... futex resumed>)        = 0
[pid 20209] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20209] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20208] <... futex resumed>)        = 0
[pid 20208] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20208] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20209] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20209] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20208] <... futex resumed>)        = 0
[pid 20208] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20208] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20209] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20209] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20209] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20208] <... futex resumed>)        = 0
[pid 20208] exit_group(0)               = ?
[pid 20209] <... futex resumed>)        = ?
[pid 20209] +++ exited with 0 +++
[pid 20208] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20208, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20210
./strace-static-x86_64: Process 20210 attached
[pid 20210] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20210] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20210] setpgid(0, 0)               = 0
[pid 20210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20210] write(3, "1000", 4)         = 4
[pid 20210] close(3)                    = 0
[pid 20210] write(1, "executing program\n", 18executing program
) = 18
[pid 20210] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20210] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20210] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20210] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20210] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20210] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20210] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20211]}, 88) = 20211
[pid 20210] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20210] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20210] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20211 attached
 <unfinished ...>
[pid 20211] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20211] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20211] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20211] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20210] <... futex resumed>)        = 0
[pid 20210] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20210] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20211] <... futex resumed>)        = 1
[pid 20211] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20211] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20210] <... futex resumed>)        = 0
[pid 20210] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20210] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20211] <... futex resumed>)        = 1
[pid 20211] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20211] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20210] <... futex resumed>)        = 0
[pid 20210] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20210] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20211] <... futex resumed>)        = 1
[pid 20211] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20211] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20210] <... futex resumed>)        = 0
[pid 20210] exit_group(0 <unfinished ...>
[pid 20211] <... futex resumed>)        = 1
[pid 20210] <... exit_group resumed>)   = ?
[pid 20211] +++ exited with 0 +++
[pid 20210] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20210, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20212 attached
, child_tidptr=0x55557c828690) = 20212
[pid 20212] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20212] setpgid(0, 0)               = 0
[pid 20212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20212] write(3, "1000", 4)         = 4
[pid 20212] close(3executing program
)                    = 0
[pid 20212] write(1, "executing program\n", 18) = 18
[pid 20212] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20212] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20212] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20212] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20212] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20212] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20212] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20213 attached
 => {parent_tid=[20213]}, 88) = 20213
[pid 20212] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20212] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20212] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20213] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20213] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20213] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20213] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20212] <... futex resumed>)        = 0
[pid 20212] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20212] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20213] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20213] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20212] <... futex resumed>)        = 0
[pid 20212] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20212] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20213] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20213] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20212] <... futex resumed>)        = 0
[pid 20212] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20212] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20213] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20213] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20212] <... futex resumed>)        = 0
[pid 20212] exit_group(0)               = ?
[pid 20213] +++ exited with 0 +++
[pid 20212] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20212, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20214
./strace-static-x86_64: Process 20214 attached
[pid 20214] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20214] setpgid(0, 0)               = 0
[pid 20214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20214] write(3, "1000", 4)         = 4
[pid 20214] close(3executing program
)                    = 0
[pid 20214] write(1, "executing program\n", 18) = 18
[pid 20214] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20214] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20214] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20214] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20214] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20214] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20214] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20215 attached
 => {parent_tid=[20215]}, 88) = 20215
[pid 20214] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20215] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20215] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20215] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20214] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20214] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20215] <... futex resumed>)        = 0
[pid 20215] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20214] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20215] <... 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 20215] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20214] <... futex resumed>)        = 0
[pid 20214] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20214] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20215] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20215] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20214] <... futex resumed>)        = 0
[pid 20214] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20214] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20215] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20215] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20214] <... futex resumed>)        = 0
[pid 20214] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20214] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20215] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20215] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20214] <... futex resumed>)        = 0
[pid 20214] exit_group(0)               = ?
[pid 20215] +++ exited with 0 +++
[pid 20214] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20214, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20216
./strace-static-x86_64: Process 20216 attached
[pid 20216] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20216] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20216] setpgid(0, 0)               = 0
[pid 20216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20216] write(3, "1000", 4)         = 4
[pid 20216] close(3)                    = 0
[pid 20216] write(1, "executing program\n", 18executing program
) = 18
[pid 20216] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20216] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20216] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20216] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20216] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20216] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20216] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20217]}, 88) = 20217
[pid 20216] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20216] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20216] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20217 attached
 <unfinished ...>
[pid 20217] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20217] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20217] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20217] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20216] <... futex resumed>)        = 0
[pid 20216] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20216] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20217] <... futex resumed>)        = 1
[pid 20217] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20217] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20216] <... futex resumed>)        = 0
[pid 20216] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20216] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20217] <... futex resumed>)        = 1
[pid 20217] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20217] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20216] <... futex resumed>)        = 0
[pid 20216] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20216] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20217] <... futex resumed>)        = 1
[pid 20217] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20217] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20216] <... futex resumed>)        = 0
[pid 20216] exit_group(0 <unfinished ...>
[pid 20217] <... futex resumed>)        = 1
[pid 20216] <... exit_group resumed>)   = ?
[pid 20217] +++ exited with 0 +++
[pid 20216] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20216, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20218
./strace-static-x86_64: Process 20218 attached
[pid 20218] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20218] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20218] setpgid(0, 0)               = 0
[pid 20218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20218] write(3, "1000", 4)         = 4
[pid 20218] close(3)                    = 0
executing program
[pid 20218] write(1, "executing program\n", 18) = 18
[pid 20218] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20218] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20218] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20218] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20218] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20218] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20218] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20219]}, 88) = 20219
[pid 20218] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20218] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20218] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20219 attached
 <unfinished ...>
[pid 20219] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20219] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20219] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20219] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20218] <... futex resumed>)        = 0
[pid 20218] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20218] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20219] <... futex resumed>)        = 1
[pid 20219] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20219] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20218] <... futex resumed>)        = 0
[pid 20218] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20218] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20219] <... futex resumed>)        = 1
[pid 20219] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20219] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20218] <... futex resumed>)        = 0
[pid 20218] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20218] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20219] <... futex resumed>)        = 1
[pid 20219] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20219] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20218] <... futex resumed>)        = 0
[pid 20218] exit_group(0)               = ?
[pid 20219] <... futex resumed>)        = ?
[pid 20219] +++ exited with 0 +++
[pid 20218] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20218, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20220
./strace-static-x86_64: Process 20220 attached
[pid 20220] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20220] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20220] setpgid(0, 0)               = 0
[pid 20220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20220] write(3, "1000", 4executing program
)         = 4
[pid 20220] close(3)                    = 0
[pid 20220] write(1, "executing program\n", 18) = 18
[pid 20220] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20220] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20220] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20220] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20220] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20220] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20220] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20221 attached
 => {parent_tid=[20221]}, 88) = 20221
[pid 20221] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20221] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20221] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20220] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20220] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20221] <... futex resumed>)        = 0
[pid 20221] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20220] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20221] <... 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 20221] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20220] <... futex resumed>)        = 0
[pid 20220] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20221] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20220] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20221] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20221] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20220] <... futex resumed>)        = 0
[pid 20220] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20220] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20221] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20221] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20220] <... futex resumed>)        = 0
[pid 20220] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20220] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20221] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20221] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20220] <... futex resumed>)        = 0
[pid 20220] exit_group(0)               = ?
[pid 20221] +++ exited with 0 +++
[pid 20220] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20220, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20222
./strace-static-x86_64: Process 20222 attached
[pid 20222] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20222] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20222] setpgid(0, 0)               = 0
[pid 20222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20222] write(3, "1000", 4)         = 4
[pid 20222] close(3executing program
)                    = 0
[pid 20222] write(1, "executing program\n", 18) = 18
[pid 20222] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20222] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20222] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20222] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20222] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20222] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20222] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20223]}, 88) = 20223
[pid 20222] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20222] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20222] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20223 attached
 <unfinished ...>
[pid 20223] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20223] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20223] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20223] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20222] <... futex resumed>)        = 0
[pid 20222] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20222] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20223] <... futex resumed>)        = 1
[pid 20223] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20223] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20222] <... futex resumed>)        = 0
[pid 20222] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20222] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20223] <... futex resumed>)        = 1
[pid 20223] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20223] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20222] <... futex resumed>)        = 0
[pid 20222] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20222] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20223] <... futex resumed>)        = 1
[pid 20223] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20223] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20222] <... futex resumed>)        = 0
[pid 20222] exit_group(0)               = ?
[pid 20223] <... futex resumed>)        = ?
[pid 20223] +++ exited with 0 +++
[pid 20222] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20222, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20224 attached
, child_tidptr=0x55557c828690) = 20224
[pid 20224] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20224] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20224] setpgid(0, 0)               = 0
[pid 20224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20224] write(3, "1000", 4)         = 4
[pid 20224] close(3)                    = 0
executing program
[pid 20224] write(1, "executing program\n", 18) = 18
[pid 20224] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20224] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20224] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20224] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20224] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20224] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20224] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20225 attached
 => {parent_tid=[20225]}, 88) = 20225
[pid 20225] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20225] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20225] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20224] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20224] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20225] <... futex resumed>)        = 0
[pid 20225] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20224] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20225] <... 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 20225] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20224] <... futex resumed>)        = 0
[pid 20224] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20224] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20225] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20225] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20224] <... futex resumed>)        = 0
[pid 20224] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20224] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20225] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20225] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20224] <... futex resumed>)        = 0
[pid 20224] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20224] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20225] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20225] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20225] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20224] <... futex resumed>)        = 0
[pid 20224] exit_group(0)               = ?
[pid 20225] <... futex resumed>)        = ?
[pid 20225] +++ exited with 0 +++
[pid 20224] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20224, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20226
./strace-static-x86_64: Process 20226 attached
[pid 20226] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20226] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20226] setpgid(0, 0)               = 0
[pid 20226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20226] write(3, "1000", 4)         = 4
[pid 20226] close(3executing program
)                    = 0
[pid 20226] write(1, "executing program\n", 18) = 18
[pid 20226] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20226] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20226] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20226] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20226] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20226] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20226] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20227]}, 88) = 20227
./strace-static-x86_64: Process 20227 attached
[pid 20226] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20226] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20226] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20227] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20227] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20227] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20227] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20226] <... futex resumed>)        = 0
[pid 20226] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20226] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20227] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20227] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20226] <... futex resumed>)        = 0
[pid 20226] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20226] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20227] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20227] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20226] <... futex resumed>)        = 0
[pid 20226] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20226] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20227] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20227] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20226] <... futex resumed>)        = 0
[pid 20226] exit_group(0)               = ?
[pid 20227] +++ exited with 0 +++
[pid 20226] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20226, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20228 attached
, child_tidptr=0x55557c828690) = 20228
[pid 20228] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20228] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20228] setpgid(0, 0)               = 0
[pid 20228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20228] write(3, "1000", 4)         = 4
[pid 20228] close(3)                    = 0
[pid 20228] write(1, "executing program\n", 18executing program
) = 18
[pid 20228] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20228] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20228] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20228] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20228] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20228] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20228] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20229]}, 88) = 20229
./strace-static-x86_64: Process 20229 attached
[pid 20229] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20228] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20229] <... set_robust_list resumed>) = 0
[pid 20229] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20228] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20229] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20228] <... futex resumed>)        = 0
[pid 20229] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20228] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20229] <... 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 20229] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20228] <... futex resumed>)        = 0
[pid 20228] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20228] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20229] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20229] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20228] <... futex resumed>)        = 0
[pid 20228] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20228] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20229] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20229] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20228] <... futex resumed>)        = 0
[pid 20228] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20228] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20229] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20229] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20228] <... futex resumed>)        = 0
[pid 20228] exit_group(0)               = ?
[pid 20229] +++ exited with 0 +++
[pid 20228] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20228, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20230 attached
 <unfinished ...>
[pid 20230] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20230
[pid 20230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20230] setpgid(0, 0)               = 0
[pid 20230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20230] write(3, "1000", 4executing program
)         = 4
[pid 20230] close(3)                    = 0
[pid 20230] write(1, "executing program\n", 18) = 18
[pid 20230] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20230] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20230] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20230] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20230] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20230] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20230] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20231]}, 88) = 20231
./strace-static-x86_64: Process 20231 attached
[pid 20231] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20231] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20231] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20230] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20230] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20231] <... futex resumed>)        = 0
[pid 20230] <... futex resumed>)        = 1
[pid 20231] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20230] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20231] <... 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 20231] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20230] <... futex resumed>)        = 0
[pid 20231] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20230] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20231] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20230] <... futex resumed>)        = 0
[pid 20231] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20231] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20230] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 20230] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20231] <... futex resumed>)        = 0
[pid 20230] <... futex resumed>)        = 1
[pid 20231] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20230] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20231] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20231] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20230] <... futex resumed>)        = 0
[pid 20231] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20230] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20231] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20230] <... futex resumed>)        = 0
[pid 20231] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20230] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20231] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20231] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20230] <... futex resumed>)        = 0
[pid 20231] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20230] exit_group(0 <unfinished ...>
[pid 20231] <... futex resumed>)        = ?
[pid 20230] <... exit_group resumed>)   = ?
[pid 20231] +++ exited with 0 +++
[pid 20230] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20230, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20232
./strace-static-x86_64: Process 20232 attached
[pid 20232] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20232] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20232] setpgid(0, 0)               = 0
[pid 20232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20232] write(3, "1000", 4)         = 4
[pid 20232] close(3)                    = 0
[pid 20232] write(1, "executing program\n", 18executing program
) = 18
[pid 20232] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20232] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20232] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20232] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20232] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20232] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20232] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20233 attached
 => {parent_tid=[20233]}, 88) = 20233
[pid 20232] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20233] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20232] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20233] <... set_robust_list resumed>) = 0
[pid 20232] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20233] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20232] <... futex resumed>)        = 0
[pid 20233] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20232] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20233] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20233] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20232] <... futex resumed>)        = 0
[pid 20233] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20232] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20233] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20232] <... futex resumed>)        = 0
[pid 20233] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20232] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20233] <... futex resumed>)        = 0
[pid 20232] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20233] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20232] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20233] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20232] <... futex resumed>)        = 0
[pid 20233] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20232] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20233] <... futex resumed>)        = 0
[pid 20232] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20233] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20232] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20233] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20232] <... futex resumed>)        = 0
[pid 20233] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20232] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20233] <... futex resumed>)        = 0
[pid 20232] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20233] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20232] exit_group(0 <unfinished ...>
[pid 20233] <... futex resumed>)        = ?
[pid 20232] <... exit_group resumed>)   = ?
[pid 20233] +++ exited with 0 +++
[pid 20232] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20232, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20234
./strace-static-x86_64: Process 20234 attached
[pid 20234] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20234] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20234] setpgid(0, 0)               = 0
[pid 20234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20234] write(3, "1000", 4)         = 4
[pid 20234] close(3)                    = 0
[pid 20234] write(1, "executing program\n", 18executing program
) = 18
[pid 20234] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20234] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20234] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20234] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20234] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20234] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20234] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20235 attached
 => {parent_tid=[20235]}, 88) = 20235
[pid 20235] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20235] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20235] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20234] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20234] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20235] <... futex resumed>)        = 0
[pid 20235] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20234] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20235] <... 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 20235] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20234] <... futex resumed>)        = 0
[pid 20234] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20234] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20235] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20235] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20235] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20234] <... futex resumed>)        = 0
[pid 20234] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20235] <... futex resumed>)        = 0
[pid 20235] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20234] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20235] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20235] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20235] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20234] <... futex resumed>)        = 0
[pid 20234] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20235] <... futex resumed>)        = 0
[pid 20235] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20234] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20235] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20235] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20234] <... futex resumed>)        = 0
[pid 20234] exit_group(0)               = ?
[pid 20235] +++ exited with 0 +++
[pid 20234] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20234, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20236 attached
 <unfinished ...>
[pid 20236] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20236] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20236
[pid 20236] <... prctl resumed>)        = 0
[pid 20236] setpgid(0, 0)               = 0
[pid 20236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20236] write(3, "1000", 4)         = 4
[pid 20236] close(3executing program
)                    = 0
[pid 20236] write(1, "executing program\n", 18) = 18
[pid 20236] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20236] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20236] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20236] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20236] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20236] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20236] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20237]}, 88) = 20237
[pid 20236] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20236] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20236] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20237 attached
 <unfinished ...>
[pid 20237] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20237] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20237] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20237] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20236] <... futex resumed>)        = 0
[pid 20236] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20236] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20237] <... futex resumed>)        = 1
[pid 20237] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20237] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20236] <... futex resumed>)        = 0
[pid 20236] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20236] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20237] <... futex resumed>)        = 1
[pid 20237] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20237] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20236] <... futex resumed>)        = 0
[pid 20236] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20236] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20237] <... futex resumed>)        = 1
[pid 20237] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20237] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20236] <... futex resumed>)        = 0
[pid 20236] exit_group(0)               = ?
[pid 20237] <... futex resumed>)        = ?
[pid 20237] +++ exited with 0 +++
[pid 20236] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20236, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20238
./strace-static-x86_64: Process 20238 attached
[pid 20238] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20238] setpgid(0, 0)               = 0
[pid 20238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20238] write(3, "1000", 4)         = 4
[pid 20238] close(3)                    = 0
executing program
[pid 20238] write(1, "executing program\n", 18) = 18
[pid 20238] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20238] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20238] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20238] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20238] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20238] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20238] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20239]}, 88) = 20239
[pid 20238] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20238] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20238] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20239 attached
 <unfinished ...>
[pid 20239] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20239] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20239] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20239] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20238] <... futex resumed>)        = 0
[pid 20238] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20239] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20238] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20239] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20239] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20238] <... futex resumed>)        = 0
[pid 20238] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20238] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20239] <... futex resumed>)        = 1
[pid 20239] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20239] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20238] <... futex resumed>)        = 0
[pid 20238] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20238] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20239] <... futex resumed>)        = 1
[pid 20239] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20239] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20238] <... futex resumed>)        = 0
[pid 20238] exit_group(0)               = ?
[pid 20239] <... futex resumed>)        = ?
[pid 20239] +++ exited with 0 +++
[pid 20238] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20238, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20240 attached
, child_tidptr=0x55557c828690) = 20240
[pid 20240] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20240] setpgid(0, 0)               = 0
[pid 20240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20240] write(3, "1000", 4)         = 4
[pid 20240] close(3)                    = 0
executing program
[pid 20240] write(1, "executing program\n", 18) = 18
[pid 20240] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20240] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20240] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20240] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20240] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20240] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20240] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20241]}, 88) = 20241
[pid 20240] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20240] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20240] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20241 attached
 <unfinished ...>
[pid 20241] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20241] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20241] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20241] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20240] <... futex resumed>)        = 0
[pid 20240] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20240] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20241] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20241] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20240] <... futex resumed>)        = 0
[pid 20240] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20240] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20241] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20241] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20240] <... futex resumed>)        = 0
[pid 20240] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20240] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20241] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20241] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20240] <... futex resumed>)        = 0
[pid 20240] exit_group(0)               = ?
[pid 20241] +++ exited with 0 +++
[pid 20240] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20240, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20242 attached
 <unfinished ...>
[pid 20242] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20242
[pid 20242] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20242] setpgid(0, 0)               = 0
[pid 20242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20242] write(3, "1000", 4)         = 4
[pid 20242] close(3)                    = 0
[pid 20242] write(1, "executing program\n", 18executing program
) = 18
[pid 20242] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20242] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20242] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20242] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20242] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20242] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20242] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20243]}, 88) = 20243
[pid 20242] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20242] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20242] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20243 attached
 <unfinished ...>
[pid 20243] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20243] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20243] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20243] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20242] <... futex resumed>)        = 0
[pid 20242] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20242] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20243] <... futex resumed>)        = 1
[pid 20243] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20243] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20242] <... futex resumed>)        = 0
[pid 20242] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20242] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20243] <... futex resumed>)        = 1
[pid 20243] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20243] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20242] <... futex resumed>)        = 0
[pid 20242] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20242] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20243] <... futex resumed>)        = 1
[pid 20243] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20243] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20242] <... futex resumed>)        = 0
[pid 20242] exit_group(0)               = ?
[pid 20243] <... futex resumed>)        = ?
[pid 20243] +++ exited with 0 +++
[pid 20242] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20242, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20244
./strace-static-x86_64: Process 20244 attached
[pid 20244] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20244] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20244] setpgid(0, 0)               = 0
[pid 20244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20244] write(3, "1000", 4)         = 4
[pid 20244] close(3)                    = 0
executing program
[pid 20244] write(1, "executing program\n", 18) = 18
[pid 20244] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20244] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20244] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20244] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20244] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20244] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20244] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20245 attached
 => {parent_tid=[20245]}, 88) = 20245
[pid 20244] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20244] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20244] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20245] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20245] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20245] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20245] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20244] <... futex resumed>)        = 0
[pid 20244] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20244] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20245] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20245] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20244] <... futex resumed>)        = 0
[pid 20244] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20244] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20245] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20245] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20244] <... futex resumed>)        = 0
[pid 20244] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20244] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20245] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20245] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20244] <... futex resumed>)        = 0
[pid 20244] exit_group(0)               = ?
[pid 20245] +++ exited with 0 +++
[pid 20244] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20244, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20246
./strace-static-x86_64: Process 20246 attached
[pid 20246] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20246] setpgid(0, 0)               = 0
[pid 20246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20246] write(3, "1000", 4)         = 4
[pid 20246] close(3)                    = 0
[pid 20246] write(1, "executing program\n", 18executing program
) = 18
[pid 20246] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20246] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20246] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20246] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20246] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20246] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20246] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20247 attached
 => {parent_tid=[20247]}, 88) = 20247
[pid 20247] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20246] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20247] <... set_robust_list resumed>) = 0
[pid 20246] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20247] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20246] <... futex resumed>)        = 0
[pid 20247] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20246] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20247] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20247] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20246] <... futex resumed>)        = 0
[pid 20246] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20246] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20247] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20247] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20246] <... futex resumed>)        = 0
[pid 20246] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20246] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20247] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20247] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20246] <... futex resumed>)        = 0
[pid 20246] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20246] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20247] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20247] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20247] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20246] <... futex resumed>)        = 0
[pid 20246] exit_group(0)               = ?
[pid 20247] <... futex resumed>)        = ?
[pid 20247] +++ exited with 0 +++
[pid 20246] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20246, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20248
./strace-static-x86_64: Process 20248 attached
[pid 20248] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20248] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20248] setpgid(0, 0)               = 0
[pid 20248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20248] write(3, "1000", 4)         = 4
[pid 20248] close(3)                    = 0
[pid 20248] write(1, "executing program\n", 18executing program
) = 18
[pid 20248] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20248] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20248] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20248] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20248] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20248] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20248] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20249 attached
 => {parent_tid=[20249]}, 88) = 20249
[pid 20249] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20249] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20249] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20248] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20248] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20249] <... futex resumed>)        = 0
[pid 20249] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20248] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20249] <... 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 20249] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20248] <... futex resumed>)        = 0
[pid 20249] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20248] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20249] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20248] <... futex resumed>)        = 0
[pid 20249] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20248] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20249] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20249] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20248] <... futex resumed>)        = 0
[pid 20248] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20248] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20249] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20249] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20248] <... futex resumed>)        = 0
[pid 20248] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20248] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20249] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20249] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20248] <... futex resumed>)        = 0
[pid 20248] exit_group(0)               = ?
[pid 20249] +++ exited with 0 +++
[pid 20248] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20248, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20250 attached
, child_tidptr=0x55557c828690) = 20250
[pid 20250] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20250] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20250] setpgid(0, 0)               = 0
[pid 20250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20250] write(3, "1000", 4)         = 4
[pid 20250] close(3)                    = 0
executing program
[pid 20250] write(1, "executing program\n", 18) = 18
[pid 20250] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20250] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20250] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20250] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20250] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20250] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20250] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20251]}, 88) = 20251
[pid 20250] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20250] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20250] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20251 attached
 <unfinished ...>
[pid 20251] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20251] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20251] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20251] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20250] <... futex resumed>)        = 0
[pid 20251] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20250] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20251] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20250] <... futex resumed>)        = 0
[pid 20251] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20250] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20251] <... futex resumed>)        = 0
[pid 20250] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20251] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20250] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20251] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20250] <... futex resumed>)        = 0
[pid 20251] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20250] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20251] <... futex resumed>)        = 0
[pid 20250] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20251] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20250] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20251] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20250] <... futex resumed>)        = 0
[pid 20251] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20250] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20251] <... futex resumed>)        = 0
[pid 20250] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20251] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20250] exit_group(0 <unfinished ...>
[pid 20251] <... futex resumed>)        = ?
[pid 20250] <... exit_group resumed>)   = ?
[pid 20251] +++ exited with 0 +++
[pid 20250] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20250, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20252 attached
 <unfinished ...>
[pid 20252] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20252] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20252
[pid 20252] <... prctl resumed>)        = 0
[pid 20252] setpgid(0, 0)               = 0
[pid 20252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20252] write(3, "1000", 4)         = 4
[pid 20252] close(3)                    = 0
executing program
[pid 20252] write(1, "executing program\n", 18) = 18
[pid 20252] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20252] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20252] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20252] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20252] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20252] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20252] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20253]}, 88) = 20253
[pid 20252] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20252] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20252] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20253 attached
 <unfinished ...>
[pid 20253] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20253] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20253] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20253] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20252] <... futex resumed>)        = 0
[pid 20252] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20252] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20253] <... futex resumed>)        = 1
[pid 20253] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20253] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20252] <... futex resumed>)        = 0
[pid 20252] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20252] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20253] <... futex resumed>)        = 1
[pid 20253] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20253] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20252] <... futex resumed>)        = 0
[pid 20252] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20252] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20253] <... futex resumed>)        = 1
[pid 20253] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20253] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20252] <... futex resumed>)        = 0
[pid 20252] exit_group(0)               = ?
[pid 20253] <... futex resumed>)        = ?
[pid 20253] +++ exited with 0 +++
[pid 20252] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20252, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20254
./strace-static-x86_64: Process 20254 attached
[pid 20254] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20254] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20254] setpgid(0, 0)               = 0
[pid 20254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20254] write(3, "1000", 4)         = 4
[pid 20254] close(3)                    = 0
[pid 20254] write(1, "executing program\n", 18executing program
) = 18
[pid 20254] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20254] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20254] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20254] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20254] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20254] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20254] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20255 attached
 => {parent_tid=[20255]}, 88) = 20255
[pid 20254] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20254] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20254] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20255] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20255] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20255] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20255] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20254] <... futex resumed>)        = 0
[pid 20254] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20254] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20255] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20255] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20254] <... futex resumed>)        = 0
[pid 20254] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20254] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20255] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20255] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20254] <... futex resumed>)        = 0
[pid 20254] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20254] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20255] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20255] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20254] <... futex resumed>)        = 0
[pid 20254] exit_group(0)               = ?
[pid 20255] +++ exited with 0 +++
[pid 20254] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20254, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20256
./strace-static-x86_64: Process 20256 attached
[pid 20256] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20256] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20256] setpgid(0, 0)               = 0
[pid 20256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20256] write(3, "1000", 4)         = 4
[pid 20256] close(3)                    = 0
[pid 20256] write(1, "executing program\n", 18executing program
) = 18
[pid 20256] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20256] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20256] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20256] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20256] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20256] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20256] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20257 attached
 => {parent_tid=[20257]}, 88) = 20257
[pid 20256] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20256] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20256] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20257] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20257] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20257] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20257] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20256] <... futex resumed>)        = 0
[pid 20256] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20256] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20257] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20257] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20256] <... futex resumed>)        = 0
[pid 20256] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20256] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20257] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20257] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20256] <... futex resumed>)        = 0
[pid 20256] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20256] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20257] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20257] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20257] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20256] <... futex resumed>)        = 0
[pid 20256] exit_group(0)               = ?
[pid 20257] <... futex resumed>)        = ?
[pid 20257] +++ exited with 0 +++
[pid 20256] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20256, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20258
./strace-static-x86_64: Process 20258 attached
[pid 20258] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20258] setpgid(0, 0)               = 0
[pid 20258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20258] write(3, "1000", 4)         = 4
[pid 20258] close(3executing program
)                    = 0
[pid 20258] write(1, "executing program\n", 18) = 18
[pid 20258] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20258] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20258] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20258] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20258] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20258] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20258] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20259 attached
 => {parent_tid=[20259]}, 88) = 20259
[pid 20258] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20258] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20258] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20259] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20259] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20259] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20259] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20258] <... futex resumed>)        = 0
[pid 20259] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20258] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20259] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20258] <... futex resumed>)        = 0
[pid 20259] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20258] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20259] <... futex resumed>)        = 0
[pid 20258] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20259] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20258] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20259] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20258] <... futex resumed>)        = 0
[pid 20259] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20258] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20259] <... futex resumed>)        = 0
[pid 20258] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20259] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20258] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20259] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20258] <... futex resumed>)        = 0
[pid 20259] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20258] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20259] <... futex resumed>)        = 0
[pid 20258] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20259] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20258] exit_group(0 <unfinished ...>
[pid 20259] <... futex resumed>)        = ?
[pid 20258] <... exit_group resumed>)   = ?
[pid 20259] +++ exited with 0 +++
[pid 20258] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20258, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20260 attached
, child_tidptr=0x55557c828690) = 20260
[pid 20260] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20260] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20260] setpgid(0, 0)               = 0
[pid 20260] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20260] write(3, "1000", 4)         = 4
[pid 20260] close(3executing program
)                    = 0
[pid 20260] write(1, "executing program\n", 18) = 18
[pid 20260] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20260] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20260] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20260] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20260] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20260] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20260] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20261 attached
 => {parent_tid=[20261]}, 88) = 20261
[pid 20260] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20260] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20260] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20261] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20261] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20261] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20261] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20260] <... futex resumed>)        = 0
[pid 20261] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20260] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20261] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20260] <... futex resumed>)        = 0
[pid 20261] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20260] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20261] <... futex resumed>)        = 0
[pid 20260] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20261] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20260] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20261] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20260] <... futex resumed>)        = 0
[pid 20261] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20260] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20261] <... futex resumed>)        = 0
[pid 20260] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20261] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20260] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20261] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20260] <... futex resumed>)        = 0
[pid 20261] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20260] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20261] <... futex resumed>)        = 0
[pid 20260] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20261] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20260] exit_group(0 <unfinished ...>
[pid 20261] <... futex resumed>)        = ?
[pid 20260] <... exit_group resumed>)   = ?
[pid 20261] +++ exited with 0 +++
[pid 20260] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20260, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20262 attached
, child_tidptr=0x55557c828690) = 20262
[pid 20262] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20262] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20262] setpgid(0, 0)               = 0
[pid 20262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20262] write(3, "1000", 4)         = 4
executing program
[pid 20262] close(3)                    = 0
[pid 20262] write(1, "executing program\n", 18) = 18
[pid 20262] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20262] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20262] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20262] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20262] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20262] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20262] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20263]}, 88) = 20263
[pid 20262] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20262] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20262] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20263 attached
 <unfinished ...>
[pid 20263] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20263] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20263] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20263] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20262] <... futex resumed>)        = 0
[pid 20262] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20262] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20263] <... futex resumed>)        = 1
[pid 20263] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20263] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20262] <... futex resumed>)        = 0
[pid 20262] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20262] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20263] <... futex resumed>)        = 1
[pid 20263] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20263] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20262] <... futex resumed>)        = 0
[pid 20262] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20262] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20263] <... futex resumed>)        = 1
[pid 20263] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20263] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20262] <... futex resumed>)        = 0
[pid 20262] exit_group(0)               = ?
[pid 20263] <... futex resumed>)        = ?
[pid 20263] +++ exited with 0 +++
[pid 20262] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20262, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20264
./strace-static-x86_64: Process 20264 attached
[pid 20264] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20264] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20264] setpgid(0, 0)               = 0
[pid 20264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20264] write(3, "1000", 4)         = 4
[pid 20264] close(3)                    = 0
executing program
[pid 20264] write(1, "executing program\n", 18) = 18
[pid 20264] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20264] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20264] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20264] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20264] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20264] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20264] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20265]}, 88) = 20265
[pid 20264] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20264] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20264] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20265 attached
 <unfinished ...>
[pid 20265] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20265] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20265] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20265] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20264] <... futex resumed>)        = 0
[pid 20264] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20264] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20265] <... futex resumed>)        = 1
[pid 20265] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20265] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20264] <... futex resumed>)        = 0
[pid 20264] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20264] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20265] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20265] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20264] <... futex resumed>)        = 0
[pid 20264] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20264] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20265] <... futex resumed>)        = 1
[pid 20265] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20265] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20264] <... futex resumed>)        = 0
[pid 20265] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20264] exit_group(0)               = ?
[pid 20265] <... futex resumed>)        = ?
[pid 20265] +++ exited with 0 +++
[pid 20264] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20264, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20266
./strace-static-x86_64: Process 20266 attached
[pid 20266] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20266] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20266] setpgid(0, 0)               = 0
[pid 20266] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20266] write(3, "1000", 4)         = 4
[pid 20266] close(3executing program
)                    = 0
[pid 20266] write(1, "executing program\n", 18) = 18
[pid 20266] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20266] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20266] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20266] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20266] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20266] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20266] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20267 attached
 => {parent_tid=[20267]}, 88) = 20267
[pid 20266] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20267] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20266] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20267] <... set_robust_list resumed>) = 0
[pid 20266] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20267] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20266] <... futex resumed>)        = 0
[pid 20267] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20266] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20267] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20267] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20266] <... futex resumed>)        = 0
[pid 20266] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20266] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20267] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20267] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20266] <... futex resumed>)        = 0
[pid 20266] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20266] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20267] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20267] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20266] <... futex resumed>)        = 0
[pid 20266] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20266] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20267] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20267] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20266] <... futex resumed>)        = 0
[pid 20266] exit_group(0)               = ?
[pid 20267] +++ exited with 0 +++
[pid 20266] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20266, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20268
./strace-static-x86_64: Process 20268 attached
[pid 20268] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20268] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20268] setpgid(0, 0)               = 0
[pid 20268] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20268] write(3, "1000", 4)         = 4
[pid 20268] close(3executing program
)                    = 0
[pid 20268] write(1, "executing program\n", 18) = 18
[pid 20268] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20268] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20268] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20268] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20268] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20268] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20268] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20269 attached
 => {parent_tid=[20269]}, 88) = 20269
[pid 20268] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20268] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20268] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20269] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20269] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20269] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20269] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20269] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20268] <... futex resumed>)        = 0
[pid 20268] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20268] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20269] <... futex resumed>)        = 0
[pid 20269] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20269] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20268] <... futex resumed>)        = 0
[pid 20268] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20268] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20269] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20269] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20268] <... futex resumed>)        = 0
[pid 20268] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20268] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20269] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20269] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20268] <... futex resumed>)        = 0
[pid 20268] exit_group(0)               = ?
[pid 20269] +++ exited with 0 +++
[pid 20268] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20268, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20270
./strace-static-x86_64: Process 20270 attached
[pid 20270] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20270] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20270] setpgid(0, 0)               = 0
[pid 20270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20270] write(3, "1000", 4)         = 4
[pid 20270] close(3)                    = 0
executing program
[pid 20270] write(1, "executing program\n", 18) = 18
[pid 20270] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20270] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20270] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20270] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20270] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20270] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20270] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20271]}, 88) = 20271
./strace-static-x86_64: Process 20271 attached
[pid 20270] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20270] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20270] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20271] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20271] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20271] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20271] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20270] <... futex resumed>)        = 0
[pid 20270] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20270] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20271] <... futex resumed>)        = 1
[pid 20271] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20271] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20270] <... futex resumed>)        = 0
[pid 20270] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20270] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20271] <... futex resumed>)        = 1
[pid 20271] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20271] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20270] <... futex resumed>)        = 0
[pid 20270] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20270] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20271] <... futex resumed>)        = 1
[pid 20271] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20271] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20270] <... futex resumed>)        = 0
[pid 20270] exit_group(0)               = ?
[pid 20271] <... futex resumed>)        = ?
[pid 20271] +++ exited with 0 +++
[pid 20270] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20270, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20272 attached
, child_tidptr=0x55557c828690) = 20272
[pid 20272] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20272] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20272] setpgid(0, 0)               = 0
[pid 20272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20272] write(3, "1000", 4)         = 4
[pid 20272] close(3)                    = 0
[pid 20272] write(1, "executing program\n", 18executing program
) = 18
[pid 20272] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20272] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20272] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20272] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20272] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20272] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20272] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20273]}, 88) = 20273
./strace-static-x86_64: Process 20273 attached
[pid 20273] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20273] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20272] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20273] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20273] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20272] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20272] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20272] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20273] <... futex resumed>)        = 0
[pid 20273] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20273] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20272] <... futex resumed>)        = 0
[pid 20272] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20272] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20273] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20273] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20272] <... futex resumed>)        = 0
[pid 20272] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20272] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20273] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20273] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20272] <... futex resumed>)        = 0
[pid 20272] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20272] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20273] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20273] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20272] <... futex resumed>)        = 0
[pid 20272] exit_group(0)               = ?
[pid 20273] +++ exited with 0 +++
[pid 20272] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20272, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20274
./strace-static-x86_64: Process 20274 attached
[pid 20274] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20274] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20274] setpgid(0, 0)               = 0
[pid 20274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20274] write(3, "1000", 4)         = 4
[pid 20274] close(3)                    = 0
[pid 20274] write(1, "executing program\n", 18executing program
) = 18
[pid 20274] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20274] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20274] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20274] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20274] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20274] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20274] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20275]}, 88) = 20275
[pid 20274] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20274] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20274] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20275 attached
 <unfinished ...>
[pid 20275] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20275] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20275] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20275] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20274] <... futex resumed>)        = 0
[pid 20274] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20274] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20275] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20275] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20274] <... futex resumed>)        = 0
[pid 20274] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20274] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20275] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20275] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20275] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20274] <... futex resumed>)        = 0
[pid 20274] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20274] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20275] <... futex resumed>)        = 0
[pid 20275] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20275] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20274] <... futex resumed>)        = 0
[pid 20274] exit_group(0)               = ?
[pid 20275] +++ exited with 0 +++
[pid 20274] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20274, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20276
./strace-static-x86_64: Process 20276 attached
[pid 20276] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20276] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20276] setpgid(0, 0)               = 0
[pid 20276] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20276] write(3, "1000", 4)         = 4
[pid 20276] close(3)                    = 0
[pid 20276] write(1, "executing program\n", 18executing program
) = 18
[pid 20276] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20276] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20276] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20276] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20276] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20276] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20276] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20277]}, 88) = 20277
./strace-static-x86_64: Process 20277 attached
[pid 20277] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20277] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20276] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20276] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20276] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20277] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20277] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20276] <... futex resumed>)        = 0
[pid 20276] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20276] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20277] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20277] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20276] <... futex resumed>)        = 0
[pid 20276] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20276] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20277] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20277] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20276] <... futex resumed>)        = 0
[pid 20276] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20276] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20277] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20277] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20276] <... futex resumed>)        = 0
[pid 20276] exit_group(0 <unfinished ...>
[pid 20277] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20276] <... exit_group resumed>)   = ?
[pid 20277] <... futex resumed>)        = ?
[pid 20277] +++ exited with 0 +++
[pid 20276] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20276, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20278 attached
, child_tidptr=0x55557c828690) = 20278
[pid 20278] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20278] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20278] setpgid(0, 0)               = 0
[pid 20278] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20278] write(3, "1000", 4)         = 4
[pid 20278] close(3executing program
)                    = 0
[pid 20278] write(1, "executing program\n", 18) = 18
[pid 20278] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20278] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20278] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20278] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20278] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20278] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20278] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20279 attached
 => {parent_tid=[20279]}, 88) = 20279
[pid 20279] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20278] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20278] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20278] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20279] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20279] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20279] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20279] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20278] <... futex resumed>)        = 0
[pid 20278] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20279] <... futex resumed>)        = 0
[pid 20278] <... futex resumed>)        = 1
[pid 20279] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20278] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20279] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20279] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20278] <... futex resumed>)        = 0
[pid 20279] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20278] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20279] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20278] <... futex resumed>)        = 0
[pid 20279] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20279] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20278] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 20278] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20279] <... futex resumed>)        = 0
[pid 20278] <... futex resumed>)        = 1
[pid 20279] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20278] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20279] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20279] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20278] <... futex resumed>)        = 0
[pid 20279] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20278] exit_group(0 <unfinished ...>
[pid 20279] <... futex resumed>)        = ?
[pid 20278] <... exit_group resumed>)   = ?
[pid 20279] +++ exited with 0 +++
[pid 20278] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20278, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20280
./strace-static-x86_64: Process 20280 attached
[pid 20280] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20280] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20280] setpgid(0, 0)               = 0
[pid 20280] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20280] write(3, "1000", 4)         = 4
[pid 20280] close(3)                    = 0
executing program
[pid 20280] write(1, "executing program\n", 18) = 18
[pid 20280] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20280] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20280] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20280] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20280] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20280] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20280] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20281 attached
 => {parent_tid=[20281]}, 88) = 20281
[pid 20280] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20280] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20280] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20281] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20281] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20281] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20281] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20280] <... futex resumed>)        = 0
[pid 20281] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20280] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20281] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20280] <... futex resumed>)        = 0
[pid 20281] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20280] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20281] <... futex resumed>)        = 0
[pid 20280] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20281] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20280] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20281] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20280] <... futex resumed>)        = 0
[pid 20281] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20280] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20281] <... futex resumed>)        = 0
[pid 20280] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20281] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20280] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20281] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20280] <... futex resumed>)        = 0
[pid 20281] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20280] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20281] <... futex resumed>)        = 0
[pid 20280] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20281] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20280] exit_group(0 <unfinished ...>
[pid 20281] <... futex resumed>)        = ?
[pid 20280] <... exit_group resumed>)   = ?
[pid 20281] +++ exited with 0 +++
[pid 20280] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20280, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20282
./strace-static-x86_64: Process 20282 attached
[pid 20282] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20282] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20282] setpgid(0, 0)               = 0
[pid 20282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20282] write(3, "1000", 4)         = 4
[pid 20282] close(3)                    = 0
[pid 20282] write(1, "executing program\n", 18executing program
) = 18
[pid 20282] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20282] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20282] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20282] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20282] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20282] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20283 attached
 => {parent_tid=[20283]}, 88) = 20283
[pid 20282] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20282] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20282] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20283] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20283] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20283] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20283] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20282] <... futex resumed>)        = 0
[pid 20283] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20282] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20283] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20282] <... futex resumed>)        = 0
[pid 20283] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20282] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20283] <... futex resumed>)        = 0
[pid 20282] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20283] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20282] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20283] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20282] <... futex resumed>)        = 0
[pid 20283] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20282] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20283] <... futex resumed>)        = 0
[pid 20282] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20283] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20282] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20283] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20282] <... futex resumed>)        = 0
[pid 20283] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20282] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20283] <... futex resumed>)        = 0
[pid 20282] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20283] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20282] exit_group(0 <unfinished ...>
[pid 20283] <... futex resumed>)        = ?
[pid 20282] <... exit_group resumed>)   = ?
[pid 20283] +++ exited with 0 +++
[pid 20282] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20282, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20284 attached
, child_tidptr=0x55557c828690) = 20284
[pid 20284] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20284] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20284] setpgid(0, 0)               = 0
[pid 20284] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20284] write(3, "1000", 4)         = 4
[pid 20284] close(3executing program
)                    = 0
[pid 20284] write(1, "executing program\n", 18) = 18
[pid 20284] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20284] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20284] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20284] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20284] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20284] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20284] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20285 attached
 => {parent_tid=[20285]}, 88) = 20285
[pid 20284] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20284] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20284] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20285] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20285] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20285] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20285] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20284] <... futex resumed>)        = 0
[pid 20285] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20284] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20285] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20284] <... futex resumed>)        = 0
[pid 20285] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20284] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20285] <... futex resumed>)        = 0
[pid 20284] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20285] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20284] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20285] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20284] <... futex resumed>)        = 0
[pid 20285] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20284] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20285] <... futex resumed>)        = 0
[pid 20284] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20285] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20284] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20285] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20284] <... futex resumed>)        = 0
[pid 20285] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20284] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20285] <... futex resumed>)        = 0
[pid 20284] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20285] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20284] exit_group(0 <unfinished ...>
[pid 20285] <... futex resumed>)        = ?
[pid 20284] <... exit_group resumed>)   = ?
[pid 20285] +++ exited with 0 +++
[pid 20284] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20284, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20286 attached
 <unfinished ...>
[pid 20286] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20286] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20286] setpgid(0, 0)               = 0
[pid 20286] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20286
[pid 20286] <... openat resumed>)       = 3
[pid 20286] write(3, "1000", 4)         = 4
[pid 20286] close(3)                    = 0
executing program
[pid 20286] write(1, "executing program\n", 18) = 18
[pid 20286] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20286] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20286] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20286] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20286] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20286] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20286] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20287 attached
 => {parent_tid=[20287]}, 88) = 20287
[pid 20286] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20286] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20286] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20287] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20287] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20287] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20287] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20286] <... futex resumed>)        = 0
[pid 20287] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20286] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20287] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20286] <... futex resumed>)        = 0
[pid 20287] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20286] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20287] <... futex resumed>)        = 0
[pid 20286] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20287] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20286] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20287] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20286] <... futex resumed>)        = 0
[pid 20287] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20286] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20287] <... futex resumed>)        = 0
[pid 20286] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20287] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20286] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20287] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20286] <... futex resumed>)        = 0
[pid 20287] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20286] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20287] <... futex resumed>)        = 0
[pid 20286] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20287] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20286] exit_group(0 <unfinished ...>
[pid 20287] <... futex resumed>)        = ?
[pid 20286] <... exit_group resumed>)   = ?
[pid 20287] +++ exited with 0 +++
[pid 20286] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20286, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20288
./strace-static-x86_64: Process 20288 attached
[pid 20288] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20288] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20288] setpgid(0, 0)               = 0
[pid 20288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20288] write(3, "1000", 4)         = 4
[pid 20288] close(3)                    = 0
executing program
[pid 20288] write(1, "executing program\n", 18) = 18
[pid 20288] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20288] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20288] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20288] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20288] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20288] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20288] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20289 attached
 => {parent_tid=[20289]}, 88) = 20289
[pid 20288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20288] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20288] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20289] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20289] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20289] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20288] <... futex resumed>)        = 0
[pid 20288] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20288] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20289] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20289] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20288] <... futex resumed>)        = 0
[pid 20288] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20288] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20289] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20289] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20288] <... futex resumed>)        = 0
[pid 20288] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20288] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20289] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20289] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20288] <... futex resumed>)        = 0
[pid 20288] exit_group(0)               = ?
[pid 20289] +++ exited with 0 +++
[pid 20288] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20288, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20290
./strace-static-x86_64: Process 20290 attached
[pid 20290] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20290] setpgid(0, 0)               = 0
[pid 20290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20290] write(3, "1000", 4)         = 4
[pid 20290] close(3)                    = 0
executing program
[pid 20290] write(1, "executing program\n", 18) = 18
[pid 20290] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20290] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20290] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20290] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20290] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20290] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20290] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20291 attached
 => {parent_tid=[20291]}, 88) = 20291
[pid 20291] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20291] <... set_robust_list resumed>) = 0
[pid 20290] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20291] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20290] <... futex resumed>)        = 0
[pid 20291] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20290] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20291] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20291] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20290] <... futex resumed>)        = 0
[pid 20290] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20290] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20291] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20291] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20290] <... futex resumed>)        = 0
[pid 20290] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20290] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20291] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20291] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20290] <... futex resumed>)        = 0
[pid 20290] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20290] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20291] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20291] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20290] <... futex resumed>)        = 0
[pid 20290] exit_group(0)               = ?
[pid 20291] +++ exited with 0 +++
[pid 20290] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20290, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20292
./strace-static-x86_64: Process 20292 attached
[pid 20292] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20292] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20292] setpgid(0, 0)               = 0
[pid 20292] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20292] write(3, "1000", 4)         = 4
[pid 20292] close(3)                    = 0
executing program
[pid 20292] write(1, "executing program\n", 18) = 18
[pid 20292] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20292] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20292] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20292] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20292] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20292] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20293 attached
 => {parent_tid=[20293]}, 88) = 20293
[pid 20293] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20292] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20293] <... set_robust_list resumed>) = 0
[pid 20293] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20293] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20292] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20292] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20293] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20292] <... futex resumed>)        = 0
[pid 20293] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20292] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20293] <... 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 20293] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20292] <... futex resumed>)        = 0
[pid 20292] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20292] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20293] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20293] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20292] <... futex resumed>)        = 0
[pid 20292] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20292] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20293] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20293] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20292] <... futex resumed>)        = 0
[pid 20292] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20292] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20293] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20293] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20292] <... futex resumed>)        = 0
[pid 20292] exit_group(0)               = ?
[pid 20293] +++ exited with 0 +++
[pid 20292] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20292, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20294
./strace-static-x86_64: Process 20294 attached
[pid 20294] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20294] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20294] setpgid(0, 0)               = 0
[pid 20294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20294] write(3, "1000", 4)         = 4
[pid 20294] close(3)                    = 0
executing program
[pid 20294] write(1, "executing program\n", 18) = 18
[pid 20294] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20294] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20294] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20294] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20294] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20294] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20294] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20295 attached
 <unfinished ...>
[pid 20295] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20294] <... clone3 resumed> => {parent_tid=[20295]}, 88) = 20295
[pid 20295] <... set_robust_list resumed>) = 0
[pid 20294] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20295] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20294] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20295] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20294] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20295] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20294] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20295] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20294] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20295] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20294] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20295] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20294] <... futex resumed>)        = 0
[pid 20295] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20294] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20295] <... futex resumed>)        = 0
[pid 20294] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20295] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20294] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20295] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20294] <... futex resumed>)        = 0
[pid 20295] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20294] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20295] <... futex resumed>)        = 0
[pid 20294] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20295] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20294] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20295] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20294] <... futex resumed>)        = 0
[pid 20295] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20294] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20295] <... futex resumed>)        = 0
[pid 20294] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20295] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20294] exit_group(0 <unfinished ...>
[pid 20295] <... futex resumed>)        = ?
[pid 20294] <... exit_group resumed>)   = ?
[pid 20295] +++ exited with 0 +++
[pid 20294] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20294, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20296
./strace-static-x86_64: Process 20296 attached
[pid 20296] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20296] setpgid(0, 0)               = 0
[pid 20296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20296] write(3, "1000", 4)         = 4
[pid 20296] close(3)                    = 0
[pid 20296] write(1, "executing program\n", 18executing program
) = 18
[pid 20296] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20296] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20296] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20296] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20296] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20296] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20296] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20297]}, 88) = 20297
./strace-static-x86_64: Process 20297 attached
[pid 20296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20296] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20296] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20297] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20297] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20297] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20297] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20296] <... futex resumed>)        = 0
[pid 20296] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20296] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20297] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20297] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20296] <... futex resumed>)        = 0
[pid 20296] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20296] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20297] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20297] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20296] <... futex resumed>)        = 0
[pid 20296] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20296] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20297] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20297] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20296] <... futex resumed>)        = 0
[pid 20297] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20296] exit_group(0)               = ?
[pid 20297] <... futex resumed>)        = ?
[pid 20297] +++ exited with 0 +++
[pid 20296] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20296, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20298
./strace-static-x86_64: Process 20298 attached
[pid 20298] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20298] setpgid(0, 0)               = 0
[pid 20298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20298] write(3, "1000", 4)         = 4
[pid 20298] close(3)                    = 0
[pid 20298] write(1, "executing program\n", 18executing program
) = 18
[pid 20298] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20298] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20298] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20298] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20298] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20298] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20298] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20299]}, 88) = 20299
./strace-static-x86_64: Process 20299 attached
[pid 20298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20298] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20298] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20299] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20299] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20299] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20299] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20298] <... futex resumed>)        = 0
[pid 20298] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20298] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20299] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20299] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20298] <... futex resumed>)        = 0
[pid 20298] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20298] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20299] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20299] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20298] <... futex resumed>)        = 0
[pid 20298] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20298] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20299] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20299] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20298] <... futex resumed>)        = 0
[pid 20298] exit_group(0)               = ?
[pid 20299] +++ exited with 0 +++
[pid 20298] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20298, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20300
./strace-static-x86_64: Process 20300 attached
[pid 20300] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20300] setpgid(0, 0)               = 0
[pid 20300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20300] write(3, "1000", 4)         = 4
[pid 20300] close(3)                    = 0
[pid 20300] write(1, "executing program\n", 18executing program
) = 18
[pid 20300] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20300] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20300] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20300] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20300] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20300] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20300] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20301 attached
 => {parent_tid=[20301]}, 88) = 20301
[pid 20300] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20300] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20300] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20301] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20301] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20301] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20301] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20301] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20300] <... futex resumed>)        = 0
[pid 20300] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20300] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20301] <... futex resumed>)        = 0
[pid 20301] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20301] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20301] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20300] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20300] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20300] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20301] <... futex resumed>)        = 0
[pid 20301] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20301] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20300] <... futex resumed>)        = 0
[pid 20300] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20300] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20301] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20301] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20300] <... futex resumed>)        = 0
[pid 20300] exit_group(0)               = ?
[pid 20301] +++ exited with 0 +++
[pid 20300] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20300, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20302 attached
, child_tidptr=0x55557c828690) = 20302
[pid 20302] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20302] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20302] setpgid(0, 0)               = 0
[pid 20302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20302] write(3, "1000", 4)         = 4
executing program
[pid 20302] close(3)                    = 0
[pid 20302] write(1, "executing program\n", 18) = 18
[pid 20302] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20302] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20302] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20302] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20302] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20302] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20302] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20303]}, 88) = 20303
./strace-static-x86_64: Process 20303 attached
[pid 20302] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20303] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20302] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20303] <... set_robust_list resumed>) = 0
[pid 20302] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20303] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20302] <... futex resumed>)        = 0
[pid 20303] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20302] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20303] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20303] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20302] <... futex resumed>)        = 0
[pid 20302] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20303] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20302] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20303] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20303] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20302] <... futex resumed>)        = 0
[pid 20303] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20302] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20303] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20302] <... futex resumed>)        = 0
[pid 20303] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20302] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20303] <... futex resumed>)        = 0
[pid 20302] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20303] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20302] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20303] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20302] <... futex resumed>)        = 0
[pid 20303] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20302] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20303] <... futex resumed>)        = 0
[pid 20302] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20303] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20302] exit_group(0 <unfinished ...>
[pid 20303] <... futex resumed>)        = ?
[pid 20302] <... exit_group resumed>)   = ?
[pid 20303] +++ exited with 0 +++
[pid 20302] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20302, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20304 attached
, child_tidptr=0x55557c828690) = 20304
[pid 20304] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20304] setpgid(0, 0)               = 0
[pid 20304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20304] write(3, "1000", 4)         = 4
[pid 20304] close(3)                    = 0
executing program
[pid 20304] write(1, "executing program\n", 18) = 18
[pid 20304] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20304] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20304] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20304] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20304] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20304] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20304] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20305]}, 88) = 20305
[pid 20304] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20304] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20304] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20305 attached
 <unfinished ...>
[pid 20305] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20305] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20305] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20304] <... futex resumed>)        = 0
[pid 20304] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20304] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20305] <... futex resumed>)        = 1
[pid 20305] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20305] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20304] <... futex resumed>)        = 0
[pid 20304] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20304] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20305] <... futex resumed>)        = 1
[pid 20305] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20305] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20304] <... futex resumed>)        = 0
[pid 20304] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20304] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20305] <... futex resumed>)        = 1
[pid 20305] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20305] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20304] <... futex resumed>)        = 0
[pid 20305] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20304] exit_group(0)               = ?
[pid 20305] <... futex resumed>)        = ?
[pid 20305] +++ exited with 0 +++
[pid 20304] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20304, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20306 attached
, child_tidptr=0x55557c828690) = 20306
[pid 20306] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20306] setpgid(0, 0)               = 0
[pid 20306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20306] write(3, "1000", 4)         = 4
[pid 20306] close(3)                    = 0
executing program
[pid 20306] write(1, "executing program\n", 18) = 18
[pid 20306] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20306] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20306] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20306] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20306] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20306] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20306] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20307 attached
 => {parent_tid=[20307]}, 88) = 20307
[pid 20306] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20307] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20306] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20307] <... set_robust_list resumed>) = 0
[pid 20306] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20307] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20306] <... futex resumed>)        = 0
[pid 20307] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20306] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20307] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20307] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20306] <... futex resumed>)        = 0
[pid 20306] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20306] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20307] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20307] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20306] <... futex resumed>)        = 0
[pid 20306] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20306] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20307] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20307] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20306] <... futex resumed>)        = 0
[pid 20306] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20306] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20307] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20307] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20306] <... futex resumed>)        = 0
[pid 20306] exit_group(0)               = ?
[pid 20307] +++ exited with 0 +++
[pid 20306] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20306, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20308 attached
, child_tidptr=0x55557c828690) = 20308
[pid 20308] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20308] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20308] setpgid(0, 0)               = 0
[pid 20308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20308] write(3, "1000", 4)         = 4
[pid 20308] close(3)                    = 0
[pid 20308] write(1, "executing program\n", 18executing program
) = 18
[pid 20308] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20308] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20308] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20308] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20308] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20308] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20309 attached
 => {parent_tid=[20309]}, 88) = 20309
[pid 20308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20308] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20308] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20309] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20309] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20309] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20308] <... futex resumed>)        = 0
[pid 20308] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20308] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20309] <... futex resumed>)        = 1
[pid 20309] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20309] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20308] <... futex resumed>)        = 0
[pid 20308] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20308] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20309] <... futex resumed>)        = 1
[pid 20309] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20309] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20308] <... futex resumed>)        = 0
[pid 20308] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20308] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20309] <... futex resumed>)        = 1
[pid 20309] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20309] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20308] <... futex resumed>)        = 0
[pid 20308] exit_group(0 <unfinished ...>
[pid 20309] <... futex resumed>)        = 1
[pid 20308] <... exit_group resumed>)   = ?
[pid 20309] +++ exited with 0 +++
[pid 20308] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20308, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20310
./strace-static-x86_64: Process 20310 attached
[pid 20310] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20310] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20310] setpgid(0, 0)               = 0
[pid 20310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20310] write(3, "1000", 4)         = 4
executing program
[pid 20310] close(3)                    = 0
[pid 20310] write(1, "executing program\n", 18) = 18
[pid 20310] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20310] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20310] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20310] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20310] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20310] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20311 attached
 => {parent_tid=[20311]}, 88) = 20311
[pid 20310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20310] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20310] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20311] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20311] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20311] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20310] <... futex resumed>)        = 0
[pid 20310] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20310] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20311] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20311] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20310] <... futex resumed>)        = 0
[pid 20310] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20310] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20311] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20311] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20310] <... futex resumed>)        = 0
[pid 20310] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20310] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20311] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20311] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20310] <... futex resumed>)        = 0
[pid 20310] exit_group(0)               = ?
[pid 20311] +++ exited with 0 +++
[pid 20310] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20310, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20312
./strace-static-x86_64: Process 20312 attached
[pid 20312] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20312] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20312] setpgid(0, 0)               = 0
[pid 20312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20312] write(3, "1000", 4)         = 4
[pid 20312] close(3)                    = 0
executing program
[pid 20312] write(1, "executing program\n", 18) = 18
[pid 20312] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20312] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20312] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20312] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20312] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20312] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20313 attached
 => {parent_tid=[20313]}, 88) = 20313
[pid 20312] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20312] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20312] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20313] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20313] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20313] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20313] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20312] <... futex resumed>)        = 0
[pid 20312] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20312] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20313] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20313] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20312] <... futex resumed>)        = 0
[pid 20312] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20312] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20313] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20313] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20312] <... futex resumed>)        = 0
[pid 20312] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20312] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20313] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20313] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20313] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20312] <... futex resumed>)        = 0
[pid 20312] exit_group(0)               = ?
[pid 20313] <... futex resumed>)        = ?
[pid 20313] +++ exited with 0 +++
[pid 20312] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20312, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20314
./strace-static-x86_64: Process 20314 attached
[pid 20314] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20314] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20314] setpgid(0, 0)               = 0
[pid 20314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20314] write(3, "1000", 4)         = 4
[pid 20314] close(3)                    = 0
executing program
[pid 20314] write(1, "executing program\n", 18) = 18
[pid 20314] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20314] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20314] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20314] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20314] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20314] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20314] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20315]}, 88) = 20315
[pid 20314] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20314] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20314] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20315 attached
 <unfinished ...>
[pid 20315] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20315] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20315] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20315] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20314] <... futex resumed>)        = 0
[pid 20314] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20314] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20315] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20315] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20314] <... futex resumed>)        = 0
[pid 20314] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20314] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20315] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20315] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20314] <... futex resumed>)        = 0
[pid 20314] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20314] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20315] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20315] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20314] <... futex resumed>)        = 0
[pid 20314] exit_group(0)               = ?
[pid 20315] +++ exited with 0 +++
[pid 20314] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20314, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20316
./strace-static-x86_64: Process 20316 attached
[pid 20316] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20316] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20316] setpgid(0, 0)               = 0
[pid 20316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20316] write(3, "1000", 4)         = 4
[pid 20316] close(3)                    = 0
executing program
[pid 20316] write(1, "executing program\n", 18) = 18
[pid 20316] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20316] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20316] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20316] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20316] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20316] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20316] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20317 attached
 => {parent_tid=[20317]}, 88) = 20317
[pid 20316] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20316] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20316] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20317] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20317] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20317] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20317] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20316] <... futex resumed>)        = 0
[pid 20316] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20316] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20317] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20317] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20316] <... futex resumed>)        = 0
[pid 20316] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20316] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20317] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20317] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20316] <... futex resumed>)        = 0
[pid 20316] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20316] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20317] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20317] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20316] <... futex resumed>)        = 0
[pid 20316] exit_group(0)               = ?
[pid 20317] +++ exited with 0 +++
[pid 20316] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20316, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20318
./strace-static-x86_64: Process 20318 attached
[pid 20318] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20318] setpgid(0, 0)               = 0
[pid 20318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20318] write(3, "1000", 4)         = 4
[pid 20318] close(3)                    = 0
[pid 20318] write(1, "executing program\n", 18executing program
) = 18
[pid 20318] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20318] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20318] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20318] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20318] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20318] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20319 attached
 => {parent_tid=[20319]}, 88) = 20319
[pid 20319] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20318] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20319] <... set_robust_list resumed>) = 0
[pid 20318] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20319] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20318] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20319] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20318] <... futex resumed>)        = 0
[pid 20319] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20318] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20319] <... 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 20319] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20318] <... futex resumed>)        = 0
[pid 20318] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20318] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20319] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20319] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20318] <... futex resumed>)        = 0
[pid 20318] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20318] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20319] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20319] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20318] <... futex resumed>)        = 0
[pid 20318] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20318] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20319] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20319] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20318] <... futex resumed>)        = 0
[pid 20319] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20318] exit_group(0)               = ?
[pid 20319] <... futex resumed>)        = ?
[pid 20319] +++ exited with 0 +++
[pid 20318] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20318, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20320
./strace-static-x86_64: Process 20320 attached
[pid 20320] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20320] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20320] setpgid(0, 0)               = 0
[pid 20320] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20320] write(3, "1000", 4)         = 4
[pid 20320] close(3)                    = 0
[pid 20320] write(1, "executing program\n", 18executing program
) = 18
[pid 20320] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20320] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20320] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20320] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20320] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20320] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20320] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20321]}, 88) = 20321
./strace-static-x86_64: Process 20321 attached
[pid 20320] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20320] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20320] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20321] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20321] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20321] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20321] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20320] <... futex resumed>)        = 0
[pid 20321] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20320] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20321] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20320] <... futex resumed>)        = 0
[pid 20321] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20320] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20321] <... futex resumed>)        = 0
[pid 20320] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20321] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20320] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20321] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20320] <... futex resumed>)        = 0
[pid 20321] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20320] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20321] <... futex resumed>)        = 0
[pid 20320] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20321] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20320] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20321] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20320] <... futex resumed>)        = 0
[pid 20321] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20320] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20321] <... futex resumed>)        = 0
[pid 20320] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20321] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20320] exit_group(0 <unfinished ...>
[pid 20321] <... futex resumed>)        = ?
[pid 20320] <... exit_group resumed>)   = ?
[pid 20321] +++ exited with 0 +++
[pid 20320] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20320, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20322
./strace-static-x86_64: Process 20322 attached
[pid 20322] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20322] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20322] setpgid(0, 0)               = 0
[pid 20322] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20322] write(3, "1000", 4)         = 4
[pid 20322] close(3executing program
)                    = 0
[pid 20322] write(1, "executing program\n", 18) = 18
[pid 20322] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20322] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20322] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20322] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20322] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20322] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20322] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20323]}, 88) = 20323
[pid 20322] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20322] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20322] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20323 attached
 <unfinished ...>
[pid 20323] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20323] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20323] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20323] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20322] <... futex resumed>)        = 0
[pid 20323] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20322] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20322] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20323] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20323] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20322] <... futex resumed>)        = 0
[pid 20322] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20322] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20323] <... futex resumed>)        = 1
[pid 20323] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20323] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20322] <... futex resumed>)        = 0
[pid 20322] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20322] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20323] <... futex resumed>)        = 1
[pid 20323] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20323] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20322] <... futex resumed>)        = 0
[pid 20322] exit_group(0 <unfinished ...>
[pid 20323] <... futex resumed>)        = 1
[pid 20322] <... exit_group resumed>)   = ?
[pid 20323] +++ exited with 0 +++
[pid 20322] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20322, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20324
./strace-static-x86_64: Process 20324 attached
[pid 20324] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20324] setpgid(0, 0)               = 0
[pid 20324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20324] write(3, "1000", 4)         = 4
[pid 20324] close(3)                    = 0
[pid 20324] write(1, "executing program\n", 18executing program
) = 18
[pid 20324] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20324] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20324] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20324] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20324] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20324] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20325]}, 88) = 20325
./strace-static-x86_64: Process 20325 attached
[pid 20324] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20324] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20324] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20325] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20325] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20325] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20325] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20324] <... futex resumed>)        = 0
[pid 20324] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20324] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20325] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20325] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20324] <... futex resumed>)        = 0
[pid 20324] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20324] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20325] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20325] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20324] <... futex resumed>)        = 0
[pid 20324] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20324] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20325] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20325] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20324] <... futex resumed>)        = 0
[pid 20324] exit_group(0)               = ?
[pid 20325] +++ exited with 0 +++
[pid 20324] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20324, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20326
./strace-static-x86_64: Process 20326 attached
[pid 20326] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20326] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20326] setpgid(0, 0)               = 0
[pid 20326] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20326] write(3, "1000", 4)         = 4
[pid 20326] close(3)                    = 0
[pid 20326] write(1, "executing program\n", 18executing program
) = 18
[pid 20326] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20326] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20326] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20326] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20326] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20326] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20326] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20327 attached
 => {parent_tid=[20327]}, 88) = 20327
[pid 20326] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20327] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20326] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20327] <... set_robust_list resumed>) = 0
[pid 20326] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20327] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20326] <... futex resumed>)        = 0
[pid 20327] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20326] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20327] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20327] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20327] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20326] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20326] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20327] <... futex resumed>)        = 0
[pid 20327] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20326] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20327] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20327] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20326] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20326] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20327] <... futex resumed>)        = 0
[pid 20327] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20327] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20326] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20327] <... futex resumed>)        = 0
[pid 20326] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20327] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20326] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20327] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20326] <... futex resumed>)        = 0
[pid 20327] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20326] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20327] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20327] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20326] <... futex resumed>)        = 0
[pid 20326] exit_group(0)               = ?
[pid 20327] +++ exited with 0 +++
[pid 20326] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20326, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20328 attached
 <unfinished ...>
[pid 20328] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20328
[pid 20328] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20328] setpgid(0, 0)               = 0
[pid 20328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20328] write(3, "1000", 4)         = 4
[pid 20328] close(3)                    = 0
executing program
[pid 20328] write(1, "executing program\n", 18) = 18
[pid 20328] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20328] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20328] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20328] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20328] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20328] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20328] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20329]}, 88) = 20329
[pid 20328] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20328] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20328] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20329 attached
 <unfinished ...>
[pid 20329] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20329] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20329] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20329] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20328] <... futex resumed>)        = 0
[pid 20328] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20328] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20329] <... futex resumed>)        = 1
[pid 20329] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20329] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20328] <... futex resumed>)        = 0
[pid 20328] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20328] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20329] <... futex resumed>)        = 1
[pid 20329] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20329] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20328] <... futex resumed>)        = 0
[pid 20328] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20328] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20329] <... futex resumed>)        = 1
[pid 20329] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20329] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20328] <... futex resumed>)        = 0
[pid 20328] exit_group(0)               = ?
[pid 20329] <... futex resumed>)        = ?
[pid 20329] +++ exited with 0 +++
[pid 20328] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20328, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20330 attached
, child_tidptr=0x55557c828690) = 20330
[pid 20330] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20330] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20330] setpgid(0, 0)               = 0
[pid 20330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20330] write(3, "1000", 4)         = 4
[pid 20330] close(3)                    = 0
executing program
[pid 20330] write(1, "executing program\n", 18) = 18
[pid 20330] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20330] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20330] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20330] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20330] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20330] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20330] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20331 attached
 => {parent_tid=[20331]}, 88) = 20331
[pid 20330] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20330] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20330] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20331] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20331] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20331] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20331] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20330] <... futex resumed>)        = 0
[pid 20330] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20330] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20331] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20331] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20330] <... futex resumed>)        = 0
[pid 20330] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20330] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20331] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20331] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20330] <... futex resumed>)        = 0
[pid 20330] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20330] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20331] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20331] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20330] <... futex resumed>)        = 0
[pid 20330] exit_group(0)               = ?
[pid 20331] +++ exited with 0 +++
[pid 20330] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20330, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20332
./strace-static-x86_64: Process 20332 attached
[pid 20332] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20332] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20332] setpgid(0, 0)               = 0
[pid 20332] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20332] write(3, "1000", 4)         = 4
[pid 20332] close(3executing program
)                    = 0
[pid 20332] write(1, "executing program\n", 18) = 18
[pid 20332] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20332] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20332] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20332] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20332] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20332] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20332] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20333]}, 88) = 20333
[pid 20332] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20332] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20332] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20333 attached
 <unfinished ...>
[pid 20333] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20333] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20333] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20333] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20332] <... futex resumed>)        = 0
[pid 20332] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20332] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20333] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20333] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20332] <... futex resumed>)        = 0
[pid 20332] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20332] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20333] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20333] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20332] <... futex resumed>)        = 0
[pid 20332] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20332] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20333] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20333] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20332] <... futex resumed>)        = 0
[pid 20332] exit_group(0)               = ?
[pid 20333] +++ exited with 0 +++
[pid 20332] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20332, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20334
./strace-static-x86_64: Process 20334 attached
[pid 20334] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20334] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20334] setpgid(0, 0)               = 0
[pid 20334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20334] write(3, "1000", 4)         = 4
[pid 20334] close(3)                    = 0
[pid 20334] write(1, "executing program\n", 18executing program
) = 18
[pid 20334] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20334] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20334] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20334] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20334] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20334] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20334] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20335]}, 88) = 20335
./strace-static-x86_64: Process 20335 attached
[pid 20334] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20334] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20334] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20335] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20335] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20335] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20335] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20334] <... futex resumed>)        = 0
[pid 20334] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20334] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20335] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20335] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20334] <... futex resumed>)        = 0
[pid 20334] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20334] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20335] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20335] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20334] <... futex resumed>)        = 0
[pid 20334] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20334] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20335] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20335] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20334] <... futex resumed>)        = 0
[pid 20334] exit_group(0)               = ?
[pid 20335] +++ exited with 0 +++
[pid 20334] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20334, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20336 attached
 <unfinished ...>
[pid 20336] set_robust_list(0x55557c8286a0, 24) = 0
[pid   290] <... clone resumed>, child_tidptr=0x55557c828690) = 20336
[pid 20336] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20336] setpgid(0, 0)               = 0
[pid 20336] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20336] write(3, "1000", 4)         = 4
[pid 20336] close(3)                    = 0
[pid 20336] write(1, "executing program\n", 18executing program
) = 18
[pid 20336] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20336] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20336] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20336] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20336] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20336] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20336] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20337]}, 88) = 20337
./strace-static-x86_64: Process 20337 attached
[pid 20336] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20336] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20336] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20337] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20337] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20337] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20337] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20336] <... futex resumed>)        = 0
[pid 20337] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20336] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20337] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20336] <... futex resumed>)        = 0
[pid 20337] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20336] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20337] <... futex resumed>)        = 0
[pid 20336] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20337] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20336] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20337] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20336] <... futex resumed>)        = 0
[pid 20337] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20336] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20337] <... futex resumed>)        = 0
[pid 20336] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20337] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20336] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20337] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20336] <... futex resumed>)        = 0
[pid 20337] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20336] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20337] <... futex resumed>)        = 0
[pid 20336] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20337] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20336] exit_group(0 <unfinished ...>
[pid 20337] <... futex resumed>)        = ?
[pid 20336] <... exit_group resumed>)   = ?
[pid 20337] +++ exited with 0 +++
[pid 20336] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20336, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20338
./strace-static-x86_64: Process 20338 attached
[pid 20338] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20338] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20338] setpgid(0, 0)               = 0
[pid 20338] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20338] write(3, "1000", 4)         = 4
[pid 20338] close(3executing program
)                    = 0
[pid 20338] write(1, "executing program\n", 18) = 18
[pid 20338] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20338] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20338] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20338] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20338] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20338] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20338] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20339 attached
 => {parent_tid=[20339]}, 88) = 20339
[pid 20339] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20339] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20339] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20338] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20338] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20338] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20339] <... futex resumed>)        = 0
[pid 20339] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20339] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20338] <... futex resumed>)        = 0
[pid 20339] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20338] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20339] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20338] <... futex resumed>)        = 0
[pid 20339] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20338] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20339] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20339] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20338] <... futex resumed>)        = 0
[pid 20339] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20338] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20339] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20338] <... futex resumed>)        = 0
[pid 20339] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20338] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20339] <... futex resumed>)        = 0
[pid 20338] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20338] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20339] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20338] <... futex resumed>)        = 0
[pid 20339] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20338] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20339] <... futex resumed>)        = 0
[pid 20338] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20339] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20338] exit_group(0 <unfinished ...>
[pid 20339] <... futex resumed>)        = ?
[pid 20338] <... exit_group resumed>)   = ?
[pid 20339] +++ exited with 0 +++
[pid 20338] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20338, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20340
./strace-static-x86_64: Process 20340 attached
[pid 20340] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20340] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20340] setpgid(0, 0)               = 0
[pid 20340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20340] write(3, "1000", 4)         = 4
[pid 20340] close(3)                    = 0
[pid 20340] write(1, "executing program\n", 18executing program
) = 18
[pid 20340] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20340] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20340] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20340] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20340] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20340] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20340] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20341]}, 88) = 20341
[pid 20340] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20340] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20340] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20341 attached
 <unfinished ...>
[pid 20341] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20341] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20341] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20341] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20340] <... futex resumed>)        = 0
[pid 20340] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20340] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20341] <... futex resumed>)        = 1
[pid 20341] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20341] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20340] <... futex resumed>)        = 0
[pid 20340] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20340] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20341] <... futex resumed>)        = 1
[pid 20341] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20341] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20340] <... futex resumed>)        = 0
[pid 20340] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20340] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20341] <... futex resumed>)        = 1
[pid 20341] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20341] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20340] <... futex resumed>)        = 0
[pid 20340] exit_group(0)               = ?
[pid 20341] <... futex resumed>)        = ?
[pid 20341] +++ exited with 0 +++
[pid 20340] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20340, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20342
./strace-static-x86_64: Process 20342 attached
[pid 20342] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20342] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20342] setpgid(0, 0)               = 0
[pid 20342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20342] write(3, "1000", 4)         = 4
[pid 20342] close(3)                    = 0
[pid 20342] write(1, "executing program\n", 18executing program
) = 18
[pid 20342] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20342] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20342] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20342] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20342] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20342] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20342] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20343]}, 88) = 20343
[pid 20342] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20342] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20342] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 20343 attached
 <unfinished ...>
[pid 20343] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20343] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20343] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20343] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20342] <... futex resumed>)        = 0
[pid 20342] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20342] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20343] <... futex resumed>)        = 1
[pid 20343] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20343] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20342] <... futex resumed>)        = 0
[pid 20342] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20342] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20343] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20343] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20342] <... futex resumed>)        = 0
[pid 20342] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20342] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20343] <... futex resumed>)        = 1
[pid 20343] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20343] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20342] <... futex resumed>)        = 0
[pid 20343] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20342] exit_group(0 <unfinished ...>
[pid 20343] <... futex resumed>)        = ?
[pid 20342] <... exit_group resumed>)   = ?
[pid 20343] +++ exited with 0 +++
[pid 20342] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20342, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20344
./strace-static-x86_64: Process 20344 attached
[pid 20344] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20344] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20344] setpgid(0, 0)               = 0
[pid 20344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20344] write(3, "1000", 4)         = 4
[pid 20344] close(3)                    = 0
[pid 20344] write(1, "executing program\n", 18executing program
) = 18
[pid 20344] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20344] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20344] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20344] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20344] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20344] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20344] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20345 attached
 => {parent_tid=[20345]}, 88) = 20345
[pid 20345] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20345] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20345] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20344] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20344] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20345] <... futex resumed>)        = 0
[pid 20345] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20344] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20345] <... 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 20345] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20344] <... futex resumed>)        = 0
[pid 20344] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20344] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20345] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20345] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20344] <... futex resumed>)        = 0
[pid 20344] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20344] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20345] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20345] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20344] <... futex resumed>)        = 0
[pid 20344] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20344] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20345] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20345] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20344] <... futex resumed>)        = 0
[pid 20344] exit_group(0)               = ?
[pid 20345] +++ exited with 0 +++
[pid 20344] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20344, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20346 attached
, child_tidptr=0x55557c828690) = 20346
[pid 20346] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20346] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20346] setpgid(0, 0)               = 0
[pid 20346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20346] write(3, "1000", 4)         = 4
executing program
[pid 20346] close(3)                    = 0
[pid 20346] write(1, "executing program\n", 18) = 18
[pid 20346] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20346] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20346] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20346] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20346] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20346] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20346] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20347 attached
 => {parent_tid=[20347]}, 88) = 20347
[pid 20347] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20346] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20346] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20346] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20347] <... set_robust_list resumed>) = 0
[pid 20347] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20347] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20347] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20346] <... futex resumed>)        = 0
[pid 20346] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20346] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20347] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20347] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20346] <... futex resumed>)        = 0
[pid 20346] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20346] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20347] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20347] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20347] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20346] <... futex resumed>)        = 0
[pid 20346] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20346] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20347] <... futex resumed>)        = 0
[pid 20347] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20347] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20346] <... futex resumed>)        = 0
[pid 20346] exit_group(0)               = ?
[pid 20347] +++ exited with 0 +++
[pid 20346] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20346, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c828690) = 20348
./strace-static-x86_64: Process 20348 attached
[pid 20348] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20348] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20348] setpgid(0, 0)               = 0
[pid 20348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20348] write(3, "1000", 4)         = 4
[pid 20348] close(3executing program
)                    = 0
[pid 20348] write(1, "executing program\n", 18) = 18
[pid 20348] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20348] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20348] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20348] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20348] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20348] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20348] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0} => {parent_tid=[20349]}, 88) = 20349
./strace-static-x86_64: Process 20349 attached
[pid 20349] set_robust_list(0x7f58519f29a0, 24) = 0
[pid 20349] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20349] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20348] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 20348] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20349] <... futex resumed>)        = 0
[pid 20348] <... futex resumed>)        = 1
[pid 20348] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20349] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20349] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20349] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20348] <... futex resumed>)        = 0
[pid 20348] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20349] <... futex resumed>)        = 0
[pid 20348] <... futex resumed>)        = 1
[pid 20349] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20348] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20349] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20349] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20348] <... futex resumed>)        = 0
[pid 20349] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20348] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20349] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20348] <... futex resumed>)        = 0
[pid 20349] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20348] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20349] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20349] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20348] <... futex resumed>)        = 0
[pid 20349] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20348] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20349] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20348] <... futex resumed>)        = 0
[pid 20349] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20348] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20349] <... futex resumed>)        = 0
[pid 20348] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20349] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20348] exit_group(0 <unfinished ...>
[pid 20349] <... futex resumed>)        = ?
[pid 20348] <... exit_group resumed>)   = ?
[pid 20349] +++ exited with 0 +++
[pid 20348] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20348, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20350 attached
, child_tidptr=0x55557c828690) = 20350
[pid 20350] set_robust_list(0x55557c8286a0, 24) = 0
[pid 20350] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20350] setpgid(0, 0)               = 0
[pid 20350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20350] write(3, "1000", 4)         = 4
[pid 20350] close(3)                    = 0
[pid 20350] write(1, "executing program\n", 18executing program
) = 18
[pid 20350] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 20350] rt_sigaction(SIGRT_1, {sa_handler=0x7f5851a575a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5851a48c20}, NULL, 8) = 0
[pid 20350] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 20350] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58519d2000
[pid 20350] mprotect(0x7f58519d3000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 20350] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 20350] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58519f2990, parent_tid=0x7f58519f2990, exit_signal=0, stack=0x7f58519d2000, stack_size=0x20300, tls=0x7f58519f26c0}./strace-static-x86_64: Process 20351 attached
 => {parent_tid=[20351]}, 88) = 20351
[pid 20351] set_robust_list(0x7f58519f29a0, 24 <unfinished ...>
[pid 20350] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20351] <... set_robust_list resumed>) = 0
[pid 20350] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20351] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 20350] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20351] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 20350] <... futex resumed>)        = 0
[pid 20351] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 20350] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20351] <... 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 20351] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20350] <... futex resumed>)        = 0
[pid 20351] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20350] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20351] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20350] <... futex resumed>)        = 0
[pid 20351] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 20350] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20351] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 20351] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 20350] <... futex resumed>)        = 0
[pid 20351] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 20350] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20351] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 20350] <... futex resumed>)        = 0
[pid 20351] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20350] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20351] <... futex resumed>)        = 0
[pid 20350] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20351] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 20350] futex(0x7f5851abb3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20351] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 20350] <... futex resumed>)        = 0
[pid 20351] futex(0x7f5851abb3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 20350] futex(0x7f5851abb3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 20351] <... futex resumed>)        = 0
[pid 20350] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 20351] futex(0x7f5851abb3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 20350] exit_group(0 <unfinished ...>
[pid 20351] <... futex resumed>)        = ?
[pid 20350] <... exit_group resumed>)   = ?
[pid 20351] +++ exited with 0 +++
[pid 20350] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20350, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0