./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3756173425
<...>
Warning: Permanently added '10.128.0.102' (ED25519) to the list of known hosts.
execve("./syz-executor3756173425", ["./syz-executor3756173425"], 0x7ffda60fb010 /* 10 vars */) = 0
brk(NULL) = 0x55555bdac000
brk(0x55555bdacd00) = 0x55555bdacd00
arch_prctl(ARCH_SET_FS, 0x55555bdac380) = 0
set_tid_address(0x55555bdac650) = 5826
set_robust_list(0x55555bdac660, 24) = 0
rseq(0x55555bdacca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor3756173425", 4096) = 28
getrandom("\x04\xc6\x71\x89\xec\xff\x17\xe5", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55555bdacd00
brk(0x55555bdcdd00) = 0x55555bdcdd00
brk(0x55555bdce000) = 0x55555bdce000
mprotect(0x7f86c30e6000, 16384, PROT_READ) = 0
mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000
mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000
mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555bdac650) = 5827
./strace-static-x86_64: Process 5827 attached
[pid 5827] set_robust_list(0x55555bdac660, 24) = 0
[pid 5827] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5827] setpgid(0, 0) = 0
[pid 5827] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5827] write(3, "1000", 4) = 4
[pid 5827] close(3) = 0
[pid 5827] write(1, "executing program\n", 18executing program
) = 18
[pid 5827] memfd_create("syzkaller", 0) = 3
[pid 5827] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5827] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5827] munmap(0x7f86bac00000, 138412032) = 0
[pid 5827] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5827] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5827] close(3) = 0
[pid 5827] close(4) = 0
[pid 5827] mkdir("./file3", 0777) = 0
[ 109.497998][ T5827] loop0: detected capacity change from 0 to 32768
[ 109.534692][ T5827] =======================================================
[pid 5827] mount("/dev/loop0", "./file3", "ocfs2", MS_MANDLOCK|MS_DIRSYNC|MS_NOATIME|MS_NODIRATIME, "acl,heartbeat=none,heartbeat=none,coherency=full,coherency=full,coherency=buffered,errors=continue,u"...) = 0
[pid 5827] openat(AT_FDCWD, "./file3", O_RDONLY|O_DIRECTORY) = 3
[ 109.534692][ T5827] WARNING: The mand mount option has been deprecated and
[ 109.534692][ T5827] and is ignored by this kernel. Remove the mand
[ 109.534692][ T5827] option from the mount to silence this warning.
[ 109.534692][ T5827] =======================================================
[ 109.587643][ T5827] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
[pid 5827] chdir("./file3") = 0
[pid 5827] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5827] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[pid 5827] fallocate(4, 0, 29521, 32769) = 0
[pid 5827] ioctl(4, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = 0
[pid 5827] exit_group(0) = ?
[pid 5827] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5827, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=27 /* 0.27 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5830 attached
, child_tidptr=0x55555bdac650) = 5830
[pid 5830] set_robust_list(0x55555bdac660, 24) = 0
[pid 5830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5830] setpgid(0, 0) = 0
[pid 5830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5830] write(3, "1000", 4) = 4
[pid 5830] close(3) = 0
executing program
[pid 5830] write(1, "executing program\n", 18) = 18
[pid 5830] memfd_create("syzkaller", 0) = 3
[pid 5830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5830] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5830] munmap(0x7f86bac00000, 138412032) = 0
[pid 5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5830] close(3) = 0
[pid 5830] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5830] fallocate(3, 0, 29521, 32769) = 0
[pid 5830] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5830] exit_group(0) = ?
[pid 5830] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5830, si_uid=0, si_status=0, si_utime=0, si_stime=32 /* 0.32 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5831 attached
, child_tidptr=0x55555bdac650) = 5831
[pid 5831] set_robust_list(0x55555bdac660, 24) = 0
[pid 5831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5831] setpgid(0, 0) = 0
[pid 5831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5831] write(3, "1000", 4) = 4
[pid 5831] close(3) = 0
[pid 5831] write(1, "executing program\n", 18executing program
) = 18
[pid 5831] memfd_create("syzkaller", 0) = 3
[pid 5831] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5831] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5831] munmap(0x7f86bac00000, 138412032) = 0
[pid 5831] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5831] close(3) = 0
[pid 5831] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5831] fallocate(3, 0, 29521, 32769) = 0
[pid 5831] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5831] exit_group(0) = ?
[pid 5831] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5831, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=30 /* 0.30 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5832 attached
, child_tidptr=0x55555bdac650) = 5832
[pid 5832] set_robust_list(0x55555bdac660, 24) = 0
[pid 5832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5832] setpgid(0, 0) = 0
[pid 5832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5832] write(3, "1000", 4) = 4
[pid 5832] close(3) = 0
executing program
[pid 5832] write(1, "executing program\n", 18) = 18
[pid 5832] memfd_create("syzkaller", 0) = 3
[pid 5832] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5832] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5832] munmap(0x7f86bac00000, 138412032) = 0
[pid 5832] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5832] close(3) = 0
[pid 5832] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5832] fallocate(3, 0, 29521, 32769) = 0
[pid 5832] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5832] exit_group(0) = ?
[pid 5832] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5832, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=31 /* 0.31 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5833 attached
, child_tidptr=0x55555bdac650) = 5833
[pid 5833] set_robust_list(0x55555bdac660, 24) = 0
[pid 5833] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5833] setpgid(0, 0) = 0
[pid 5833] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5833] write(3, "1000", 4) = 4
[pid 5833] close(3executing program
) = 0
[pid 5833] write(1, "executing program\n", 18) = 18
[pid 5833] memfd_create("syzkaller", 0) = 3
[pid 5833] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5833] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5833] munmap(0x7f86bac00000, 138412032) = 0
[pid 5833] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5833] close(3) = 0
[pid 5833] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5833] fallocate(3, 0, 29521, 32769) = 0
[pid 5833] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5833] exit_group(0) = ?
[pid 5833] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5833, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=29 /* 0.29 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5834 attached
, child_tidptr=0x55555bdac650) = 5834
[pid 5834] set_robust_list(0x55555bdac660, 24) = 0
[pid 5834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5834] setpgid(0, 0) = 0
[pid 5834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5834] write(3, "1000", 4) = 4
[pid 5834] close(3) = 0
executing program
[pid 5834] write(1, "executing program\n", 18) = 18
[pid 5834] memfd_create("syzkaller", 0) = 3
[pid 5834] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[ 111.718464][ T63]
[ 111.720834][ T63] ======================================================
[ 111.727858][ T63] WARNING: possible circular locking dependency detected
[ 111.734885][ T63] 6.15.0-rc4-syzkaller-00296-ge8ab83e34bdc #0 Not tainted
[ 111.742032][ T63] ------------------------------------------------------
[ 111.749052][ T63] kworker/u8:4/63 is trying to acquire lock:
[ 111.755045][ T63] ffff888078f85100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: __ocfs2_flush_truncate_log+0x31e/0x1160
[ 111.768287][ T63]
[ 111.768287][ T63] but task is already holding lock:
[ 111.775659][ T63] ffff888078f8b480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}, at: ocfs2_truncate_log_worker+0x92/0x1a0
[ 111.788624][ T63]
[ 111.788624][ T63] which lock already depends on the new lock.
[ 111.788624][ T63]
[ 111.799026][ T63]
[ 111.799026][ T63] the existing dependency chain (in reverse order) is:
[ 111.808044][ T63]
[ 111.808044][ T63] -> #1 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}:
[ 111.818645][ T63] down_write+0x92/0x200
[ 111.823581][ T63] ocfs2_move_extent+0x6ea/0x17f0
[ 111.829174][ T63] ocfs2_move_extents+0xd69/0x1980
[ 111.834860][ T63] ocfs2_ioctl_move_extents+0x54d/0xb20
[ 111.840978][ T63] ocfs2_ioctl+0x3c6/0x6f0
[ 111.845946][ T63] __x64_sys_ioctl+0x193/0x200
[ 111.851277][ T63] do_syscall_64+0xcd/0x260
[ 111.856348][ T63] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 111.862792][ T63]
[ 111.862792][ T63] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}:
[ 111.873372][ T63] __lock_acquire+0x1173/0x1ba0
[ 111.878793][ T63] lock_acquire+0x179/0x350
[ 111.883866][ T63] down_write+0x92/0x200
[ 111.888678][ T63] __ocfs2_flush_truncate_log+0x31e/0x1160
[ 111.895056][ T63] ocfs2_truncate_log_worker+0x9a/0x1a0
[ 111.901169][ T63] process_one_work+0x9cf/0x1b70
[ 111.906654][ T63] worker_thread+0x6c8/0xf10
[ 111.911800][ T63] kthread+0x3c5/0x780
[pid 5834] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[ 111.916410][ T63] ret_from_fork+0x48/0x80
[ 111.921368][ T63] ret_from_fork_asm+0x1a/0x30
[ 111.926670][ T63]
[ 111.926670][ T63] other info that might help us debug this:
[ 111.926670][ T63]
[ 111.936894][ T63] Possible unsafe locking scenario:
[ 111.936894][ T63]
[ 111.944341][ T63] CPU0 CPU1
[ 111.949702][ T63] ---- ----
[ 111.955076][ T63] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6);
[ 111.962397][ T63] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5);
[ 111.972237][ T63] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6);
[ 111.982093][ T63] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5);
[ 111.989418][ T63]
[ 111.989418][ T63] *** DEADLOCK ***
[ 111.989418][ T63]
[ 111.997563][ T63] 3 locks held by kworker/u8:4/63:
[ 112.002681][ T63] #0: ffff888012012148 ((wq_completion)ocfs2_wq){+.+.}-{0:0}, at: process_one_work+0x12a2/0x1b70
[pid 5834] munmap(0x7f86bac00000, 138412032) = 0
[pid 5834] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 112.013366][ T63] #1: ffffc90001557d18 ((work_completion)(&(&osb->osb_truncate_log_wq)->work)){+.+.}-{0:0}, at: process_one_work+0x929/0x1b70
[ 112.026578][ T63] #2: ffff888078f8b480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}, at: ocfs2_truncate_log_worker+0x92/0x1a0
[ 112.039976][ T63]
[ 112.039976][ T63] stack backtrace:
[ 112.045891][ T63] CPU: 0 UID: 0 PID: 63 Comm: kworker/u8:4 Not tainted 6.15.0-rc4-syzkaller-00296-ge8ab83e34bdc #0 PREEMPT(full)
[ 112.045936][ T63] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025
[ 112.045959][ T63] Workqueue: ocfs2_wq ocfs2_truncate_log_worker
[ 112.046009][ T63] Call Trace:
[ 112.046021][ T63]
[ 112.046034][ T63] dump_stack_lvl+0x116/0x1f0
[ 112.046084][ T63] print_circular_bug+0x275/0x350
[ 112.046137][ T63] check_noncircular+0x14c/0x170
[ 112.046190][ T63] ? srso_alias_return_thunk+0x5/0xfbef5
[ 112.046234][ T63] __lock_acquire+0x1173/0x1ba0
[ 112.046294][ T63] lock_acquire+0x179/0x350
[ 112.046344][ T63] ? __ocfs2_flush_truncate_log+0x31e/0x1160
[ 112.046390][ T63] ? __pfx___might_resched+0x10/0x10
[ 112.046438][ T63] down_write+0x92/0x200
[ 112.046489][ T63] ? __ocfs2_flush_truncate_log+0x31e/0x1160
[ 112.046533][ T63] ? __pfx_down_write+0x10/0x10
[ 112.046584][ T63] ? srso_alias_return_thunk+0x5/0xfbef5
[ 112.046624][ T63] ? lockdep_hardirqs_on+0x7c/0x110
[ 112.046669][ T63] ? srso_alias_return_thunk+0x5/0xfbef5
[ 112.046709][ T63] ? _raw_spin_unlock_irqrestore+0x3b/0x80
[ 112.046771][ T63] __ocfs2_flush_truncate_log+0x31e/0x1160
[ 112.046817][ T63] ? __pfx___might_resched+0x10/0x10
[ 112.046862][ T63] ? srso_alias_return_thunk+0x5/0xfbef5
[ 112.046904][ T63] ? __pfx___ocfs2_flush_truncate_log+0x10/0x10
[ 112.046949][ T63] ? down_write+0x14d/0x200
[ 112.046999][ T63] ? __pfx_down_write+0x10/0x10
[ 112.047056][ T63] ocfs2_truncate_log_worker+0x9a/0x1a0
[ 112.047100][ T63] ? __pfx_ocfs2_truncate_log_worker+0x10/0x10
[ 112.047145][ T63] ? srso_alias_return_thunk+0x5/0xfbef5
[ 112.047185][ T63] ? rcu_is_watching+0x12/0xc0
[ 112.047226][ T63] process_one_work+0x9cf/0x1b70
[ 112.047269][ T63] ? __pfx_process_one_work+0x10/0x10
[ 112.047304][ T63] ? srso_alias_return_thunk+0x5/0xfbef5
[ 112.047349][ T63] ? srso_alias_return_thunk+0x5/0xfbef5
[ 112.047389][ T63] ? assign_work+0x1a0/0x250
[ 112.047421][ T63] worker_thread+0x6c8/0xf10
[ 112.047463][ T63] ? __pfx_worker_thread+0x10/0x10
[ 112.047498][ T63] kthread+0x3c5/0x780
[ 112.047527][ T63] ? __pfx_kthread+0x10/0x10
[ 112.047555][ T63] ? __pfx_kthread+0x10/0x10
[ 112.047584][ T63] ? __pfx_kthread+0x10/0x10
[pid 5834] close(3) = 0
[pid 5834] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5834] fallocate(3, 0, 29521, 32769) = 0
[pid 5834] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5834] exit_group(0) = ?
[pid 5834] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5834, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=44 /* 0.44 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555bdac650) = 5835
./strace-static-x86_64: Process 5835 attached
[pid 5835] set_robust_list(0x55555bdac660, 24) = 0
[pid 5835] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5835] setpgid(0, 0) = 0
[pid 5835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5835] write(3, "1000", 4) = 4
[pid 5835] close(3) = 0
[pid 5835] write(1, "executing program\n", 18executing program
) = 18
[pid 5835] memfd_create("syzkaller", 0) = 3
[pid 5835] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[ 112.047612][ T63] ? __pfx_kthread+0x10/0x10
[ 112.047640][ T63] ? srso_alias_return_thunk+0x5/0xfbef5
[ 112.047680][ T63] ? rcu_is_watching+0x12/0xc0
[ 112.047718][ T63] ? __pfx_kthread+0x10/0x10
[ 112.047762][ T63] ret_from_fork+0x48/0x80
[ 112.047793][ T63] ? __pfx_kthread+0x10/0x10
[ 112.047823][ T63] ret_from_fork_asm+0x1a/0x30
[ 112.047882][ T63]
[pid 5835] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5835] munmap(0x7f86bac00000, 138412032) = 0
[pid 5835] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5835] close(3) = 0
[pid 5835] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5835] fallocate(3, 0, 29521, 32769) = 0
[pid 5835] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5835] exit_group(0) = ?
[pid 5835] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5835, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5836 attached
, child_tidptr=0x55555bdac650) = 5836
[pid 5836] set_robust_list(0x55555bdac660, 24) = 0
[pid 5836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5836] setpgid(0, 0) = 0
[pid 5836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5836] write(3, "1000", 4) = 4
[pid 5836] close(3) = 0
[pid 5836] write(1, "executing program\n", 18executing program
) = 18
[pid 5836] memfd_create("syzkaller", 0) = 3
[pid 5836] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5836] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5836] munmap(0x7f86bac00000, 138412032) = 0
[pid 5836] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5836] close(3) = 0
[pid 5836] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5836] fallocate(3, 0, 29521, 32769) = 0
[pid 5836] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5836] exit_group(0) = ?
[pid 5836] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5836, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=17 /* 0.17 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5837 attached
, child_tidptr=0x55555bdac650) = 5837
[pid 5837] set_robust_list(0x55555bdac660, 24) = 0
[pid 5837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5837] setpgid(0, 0) = 0
[pid 5837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5837] write(3, "1000", 4) = 4
[pid 5837] close(3) = 0
[pid 5837] write(1, "executing program\n", 18executing program
) = 18
[pid 5837] memfd_create("syzkaller", 0) = 3
[pid 5837] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5837] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5837] munmap(0x7f86bac00000, 138412032) = 0
[pid 5837] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5837] close(3) = 0
[pid 5837] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5837] fallocate(3, 0, 29521, 32769) = 0
[pid 5837] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5837] exit_group(0) = ?
[pid 5837] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5837, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5838 attached
, child_tidptr=0x55555bdac650) = 5838
[pid 5838] set_robust_list(0x55555bdac660, 24) = 0
[pid 5838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5838] setpgid(0, 0) = 0
[pid 5838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5838] write(3, "1000", 4) = 4
[pid 5838] close(3) = 0
executing program
[pid 5838] write(1, "executing program\n", 18) = 18
[pid 5838] memfd_create("syzkaller", 0) = 3
[pid 5838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5838] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5838] munmap(0x7f86bac00000, 138412032) = 0
[pid 5838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5838] close(3) = 0
[pid 5838] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5838] fallocate(3, 0, 29521, 32769) = 0
[pid 5838] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5838] exit_group(0) = ?
[pid 5838] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5838, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=15 /* 0.15 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555bdac650) = 5839
./strace-static-x86_64: Process 5839 attached
[pid 5839] set_robust_list(0x55555bdac660, 24) = 0
[pid 5839] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5839] setpgid(0, 0) = 0
[pid 5839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5839] write(3, "1000", 4) = 4
[pid 5839] close(3) = 0
executing program
[pid 5839] write(1, "executing program\n", 18) = 18
[pid 5839] memfd_create("syzkaller", 0) = 3
[pid 5839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5839] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5839] munmap(0x7f86bac00000, 138412032) = 0
[pid 5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5839] close(3) = 0
[pid 5839] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5839] fallocate(3, 0, 29521, 32769) = 0
[pid 5839] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5839] exit_group(0) = ?
[pid 5839] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5839, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5840 attached
, child_tidptr=0x55555bdac650) = 5840
[pid 5840] set_robust_list(0x55555bdac660, 24) = 0
[pid 5840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5840] setpgid(0, 0) = 0
[pid 5840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5840] write(3, "1000", 4) = 4
[pid 5840] close(3) = 0
executing program
[pid 5840] write(1, "executing program\n", 18) = 18
[pid 5840] memfd_create("syzkaller", 0) = 3
[pid 5840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5840] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5840] munmap(0x7f86bac00000, 138412032) = 0
[pid 5840] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5840] close(3) = 0
[pid 5840] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5840] fallocate(3, 0, 29521, 32769) = 0
[pid 5840] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5840] exit_group(0) = ?
[pid 5840] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5840, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5841 attached
[pid 5841] set_robust_list(0x55555bdac660, 24
[pid 5826] <... clone resumed>, child_tidptr=0x55555bdac650) = 5841
[pid 5841] <... set_robust_list resumed>) = 0
[pid 5841] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5841] setpgid(0, 0) = 0
[pid 5841] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5841] write(3, "1000", 4) = 4
[pid 5841] close(3) = 0
executing program
[pid 5841] write(1, "executing program\n", 18) = 18
[pid 5841] memfd_create("syzkaller", 0) = 3
[pid 5841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5841] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5841] munmap(0x7f86bac00000, 138412032) = 0
[pid 5841] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5841] close(3) = 0
[pid 5841] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5841] fallocate(3, 0, 29521, 32769) = 0
[pid 5841] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5841] exit_group(0) = ?
[pid 5841] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5841, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5843 attached
, child_tidptr=0x55555bdac650) = 5843
[pid 5843] set_robust_list(0x55555bdac660, 24) = 0
[pid 5843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5843] setpgid(0, 0) = 0
[pid 5843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5843] write(3, "1000", 4) = 4
[pid 5843] close(3) = 0
executing program
[pid 5843] write(1, "executing program\n", 18) = 18
[pid 5843] memfd_create("syzkaller", 0) = 3
[pid 5843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5843] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5843] munmap(0x7f86bac00000, 138412032) = 0
[pid 5843] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5843] close(3) = 0
[pid 5843] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5843] fallocate(3, 0, 29521, 32769) = 0
[pid 5843] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5843] exit_group(0) = ?
[pid 5843] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5843, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5844 attached
, child_tidptr=0x55555bdac650) = 5844
[pid 5844] set_robust_list(0x55555bdac660, 24) = 0
[pid 5844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5844] setpgid(0, 0) = 0
[pid 5844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5844] write(3, "1000", 4) = 4
[pid 5844] close(3) = 0
executing program
[pid 5844] write(1, "executing program\n", 18) = 18
[pid 5844] memfd_create("syzkaller", 0) = 3
[pid 5844] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5844] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5844] munmap(0x7f86bac00000, 138412032) = 0
[pid 5844] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5844] close(3) = 0
[pid 5844] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5844] fallocate(3, 0, 29521, 32769) = 0
[pid 5844] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5844] exit_group(0) = ?
[pid 5844] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5844, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5845 attached
, child_tidptr=0x55555bdac650) = 5845
[pid 5845] set_robust_list(0x55555bdac660, 24) = 0
[pid 5845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5845] setpgid(0, 0) = 0
[pid 5845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5845] write(3, "1000", 4) = 4
[pid 5845] close(3) = 0
executing program
[pid 5845] write(1, "executing program\n", 18) = 18
[pid 5845] memfd_create("syzkaller", 0) = 3
[pid 5845] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5845] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5845] munmap(0x7f86bac00000, 138412032) = 0
[pid 5845] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5845] close(3) = 0
[pid 5845] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5845] fallocate(3, 0, 29521, 32769) = 0
[pid 5845] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5845] exit_group(0) = ?
[pid 5845] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5845, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555bdac650) = 5846
./strace-static-x86_64: Process 5846 attached
[pid 5846] set_robust_list(0x55555bdac660, 24) = 0
[pid 5846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5846] setpgid(0, 0) = 0
[pid 5846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5846] write(3, "1000", 4) = 4
[pid 5846] close(3) = 0
executing program
[pid 5846] write(1, "executing program\n", 18) = 18
[pid 5846] memfd_create("syzkaller", 0) = 3
[pid 5846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5846] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5846] munmap(0x7f86bac00000, 138412032) = 0
[pid 5846] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5846] close(3) = 0
[pid 5846] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5846] fallocate(3, 0, 29521, 32769) = 0
[pid 5846] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5846] exit_group(0) = ?
[pid 5846] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5846, si_uid=0, si_status=0, si_utime=0, si_stime=19 /* 0.19 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5847 attached
, child_tidptr=0x55555bdac650) = 5847
[pid 5847] set_robust_list(0x55555bdac660, 24) = 0
[pid 5847] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5847] setpgid(0, 0) = 0
[pid 5847] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5847] write(3, "1000", 4) = 4
[pid 5847] close(3) = 0
[pid 5847] write(1, "executing program\n", 18executing program
) = 18
[pid 5847] memfd_create("syzkaller", 0) = 3
[pid 5847] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5847] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5847] munmap(0x7f86bac00000, 138412032) = 0
[pid 5847] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5847] close(3) = 0
[pid 5847] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5847] fallocate(3, 0, 29521, 32769) = 0
[pid 5847] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5847] exit_group(0) = ?
[pid 5847] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5847, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=15 /* 0.15 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5848 attached
[pid 5848] set_robust_list(0x55555bdac660, 24) = 0
[pid 5848] prctl(PR_SET_PDEATHSIG, SIGKILL
[pid 5826] <... clone resumed>, child_tidptr=0x55555bdac650) = 5848
[pid 5848] <... prctl resumed>) = 0
[pid 5848] setpgid(0, 0) = 0
[pid 5848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5848] write(3, "1000", 4) = 4
[pid 5848] close(3) = 0
executing program
[pid 5848] write(1, "executing program\n", 18) = 18
[pid 5848] memfd_create("syzkaller", 0) = 3
[pid 5848] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5848] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5848] munmap(0x7f86bac00000, 138412032) = 0
[pid 5848] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5848] close(3) = 0
[pid 5848] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5848] fallocate(3, 0, 29521, 32769) = 0
[pid 5848] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5848] exit_group(0) = ?
[pid 5848] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5848, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5849 attached
, child_tidptr=0x55555bdac650) = 5849
[pid 5849] set_robust_list(0x55555bdac660, 24) = 0
[pid 5849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5849] setpgid(0, 0) = 0
[pid 5849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5849] write(3, "1000", 4) = 4
[pid 5849] close(3) = 0
executing program
[pid 5849] write(1, "executing program\n", 18) = 18
[pid 5849] memfd_create("syzkaller", 0) = 3
[pid 5849] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5849] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5849] munmap(0x7f86bac00000, 138412032) = 0
[pid 5849] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5849] close(3) = 0
[pid 5849] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5849] fallocate(3, 0, 29521, 32769) = 0
[pid 5849] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5849] exit_group(0) = ?
[pid 5849] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5849, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5850 attached
, child_tidptr=0x55555bdac650) = 5850
[pid 5850] set_robust_list(0x55555bdac660, 24) = 0
[pid 5850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5850] setpgid(0, 0) = 0
[pid 5850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5850] write(3, "1000", 4) = 4
[pid 5850] close(3) = 0
executing program
[pid 5850] write(1, "executing program\n", 18) = 18
[pid 5850] memfd_create("syzkaller", 0) = 3
[pid 5850] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5850] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5850] munmap(0x7f86bac00000, 138412032) = 0
[pid 5850] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5850] close(3) = 0
[pid 5850] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5850] fallocate(3, 0, 29521, 32769) = 0
[pid 5850] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5850] exit_group(0) = ?
[pid 5850] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5850, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=17 /* 0.17 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5851 attached
, child_tidptr=0x55555bdac650) = 5851
[pid 5851] set_robust_list(0x55555bdac660, 24) = 0
[pid 5851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5851] setpgid(0, 0) = 0
[pid 5851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5851] write(3, "1000", 4) = 4
[pid 5851] close(3) = 0
executing program
[pid 5851] write(1, "executing program\n", 18) = 18
[pid 5851] memfd_create("syzkaller", 0) = 3
[pid 5851] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5851] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5851] munmap(0x7f86bac00000, 138412032) = 0
[pid 5851] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5851] close(3) = 0
[pid 5851] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5851] fallocate(3, 0, 29521, 32769) = 0
[pid 5851] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5851] exit_group(0) = ?
[pid 5851] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5851, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=17 /* 0.17 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5853 attached
, child_tidptr=0x55555bdac650) = 5853
[pid 5853] set_robust_list(0x55555bdac660, 24) = 0
[pid 5853] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5853] setpgid(0, 0) = 0
[pid 5853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5853] write(3, "1000", 4) = 4
[pid 5853] close(3) = 0
executing program
[pid 5853] write(1, "executing program\n", 18) = 18
[pid 5853] memfd_create("syzkaller", 0) = 3
[pid 5853] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5853] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5853] munmap(0x7f86bac00000, 138412032) = 0
[pid 5853] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5853] close(3) = 0
[pid 5853] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5853] fallocate(3, 0, 29521, 32769) = 0
[pid 5853] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5853] exit_group(0) = ?
[pid 5853] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5853, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5854 attached
, child_tidptr=0x55555bdac650) = 5854
[pid 5854] set_robust_list(0x55555bdac660, 24) = 0
[pid 5854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5854] setpgid(0, 0) = 0
[pid 5854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5854] write(3, "1000", 4) = 4
[pid 5854] close(3) = 0
executing program
[pid 5854] write(1, "executing program\n", 18) = 18
[pid 5854] memfd_create("syzkaller", 0) = 3
[pid 5854] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5854] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5854] munmap(0x7f86bac00000, 138412032) = 0
[pid 5854] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5854] close(3) = 0
[pid 5854] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5854] fallocate(3, 0, 29521, 32769) = 0
[pid 5854] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5854] exit_group(0) = ?
[pid 5854] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5854, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5855 attached
, child_tidptr=0x55555bdac650) = 5855
[pid 5855] set_robust_list(0x55555bdac660, 24) = 0
[pid 5855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5855] setpgid(0, 0) = 0
[pid 5855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5855] write(3, "1000", 4) = 4
[pid 5855] close(3) = 0
executing program
[pid 5855] write(1, "executing program\n", 18) = 18
[pid 5855] memfd_create("syzkaller", 0) = 3
[pid 5855] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5855] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5855] munmap(0x7f86bac00000, 138412032) = 0
[pid 5855] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5855] close(3) = 0
[pid 5855] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5855] fallocate(3, 0, 29521, 32769) = 0
[pid 5855] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5855] exit_group(0) = ?
[pid 5855] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5855, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5856 attached
, child_tidptr=0x55555bdac650) = 5856
[pid 5856] set_robust_list(0x55555bdac660, 24) = 0
[pid 5856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5856] setpgid(0, 0) = 0
[pid 5856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5856] write(3, "1000", 4) = 4
[pid 5856] close(3) = 0
executing program
[pid 5856] write(1, "executing program\n", 18) = 18
[pid 5856] memfd_create("syzkaller", 0) = 3
[pid 5856] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5856] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5856] munmap(0x7f86bac00000, 138412032) = 0
[pid 5856] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5856] close(3) = 0
[pid 5856] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5856] fallocate(3, 0, 29521, 32769) = 0
[pid 5856] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5856] exit_group(0) = ?
[pid 5856] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5856, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5857 attached
, child_tidptr=0x55555bdac650) = 5857
[pid 5857] set_robust_list(0x55555bdac660, 24) = 0
[pid 5857] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5857] setpgid(0, 0) = 0
[pid 5857] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5857] write(3, "1000", 4) = 4
[pid 5857] close(3) = 0
[pid 5857] write(1, "executing program\n", 18executing program
) = 18
[pid 5857] memfd_create("syzkaller", 0) = 3
[pid 5857] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5857] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5857] munmap(0x7f86bac00000, 138412032) = 0
[pid 5857] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5857] close(3) = 0
[pid 5857] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5857] fallocate(3, 0, 29521, 32769) = 0
[pid 5857] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5857] exit_group(0) = ?
[pid 5857] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5857, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=19 /* 0.19 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5858 attached
, child_tidptr=0x55555bdac650) = 5858
[pid 5858] set_robust_list(0x55555bdac660, 24) = 0
[pid 5858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5858] setpgid(0, 0) = 0
[pid 5858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5858] write(3, "1000", 4) = 4
[pid 5858] close(3) = 0
executing program
[pid 5858] write(1, "executing program\n", 18) = 18
[pid 5858] memfd_create("syzkaller", 0) = 3
[pid 5858] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5858] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5858] munmap(0x7f86bac00000, 138412032) = 0
[pid 5858] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5858] close(3) = 0
[pid 5858] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5858] fallocate(3, 0, 29521, 32769) = 0
[pid 5858] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5858] exit_group(0) = ?
[pid 5858] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5858, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5859 attached
[pid 5859] set_robust_list(0x55555bdac660, 24
[pid 5826] <... clone resumed>, child_tidptr=0x55555bdac650) = 5859
[pid 5859] <... set_robust_list resumed>) = 0
[pid 5859] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5859] setpgid(0, 0) = 0
[pid 5859] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5859] write(3, "1000", 4) = 4
[pid 5859] close(3) = 0
[pid 5859] write(1, "executing program\n", 18executing program
) = 18
[pid 5859] memfd_create("syzkaller", 0) = 3
[pid 5859] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5859] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5859] munmap(0x7f86bac00000, 138412032) = 0
[pid 5859] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5859] close(3) = 0
[pid 5859] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5859] fallocate(3, 0, 29521, 32769) = 0
[pid 5859] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5859] exit_group(0) = ?
[pid 5859] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5859, si_uid=0, si_status=0, si_utime=0, si_stime=19 /* 0.19 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5860 attached
[pid 5860] set_robust_list(0x55555bdac660, 24) = 0
[pid 5826] <... clone resumed>, child_tidptr=0x55555bdac650) = 5860
[pid 5860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5860] setpgid(0, 0) = 0
[pid 5860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5860] write(3, "1000", 4) = 4
[pid 5860] close(3) = 0
executing program
[pid 5860] write(1, "executing program\n", 18) = 18
[pid 5860] memfd_create("syzkaller", 0) = 3
[pid 5860] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5860] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5860] munmap(0x7f86bac00000, 138412032) = 0
[pid 5860] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5860] close(3) = 0
[pid 5860] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5860] fallocate(3, 0, 29521, 32769) = 0
[pid 5860] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5860] exit_group(0) = ?
[pid 5860] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5860, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5861 attached
, child_tidptr=0x55555bdac650) = 5861
[pid 5861] set_robust_list(0x55555bdac660, 24) = 0
[pid 5861] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5861] setpgid(0, 0) = 0
[pid 5861] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5861] write(3, "1000", 4) = 4
[pid 5861] close(3) = 0
executing program
[pid 5861] write(1, "executing program\n", 18) = 18
[pid 5861] memfd_create("syzkaller", 0) = 3
[pid 5861] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5861] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5861] munmap(0x7f86bac00000, 138412032) = 0
[pid 5861] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5861] close(3) = 0
[pid 5861] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5861] fallocate(3, 0, 29521, 32769) = 0
[pid 5861] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5861] exit_group(0) = ?
[pid 5861] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5861, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=16 /* 0.16 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5863 attached
, child_tidptr=0x55555bdac650) = 5863
[pid 5863] set_robust_list(0x55555bdac660, 24) = 0
[pid 5863] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5863] setpgid(0, 0) = 0
[pid 5863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5863] write(3, "1000", 4) = 4
[pid 5863] close(3) = 0
[pid 5863] write(1, "executing program\n", 18executing program
) = 18
[pid 5863] memfd_create("syzkaller", 0) = 3
[pid 5863] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5863] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5863] munmap(0x7f86bac00000, 138412032) = 0
[pid 5863] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5863] close(3) = 0
[pid 5863] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5863] fallocate(3, 0, 29521, 32769) = 0
[pid 5863] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5863] exit_group(0) = ?
[pid 5863] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5863, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=20 /* 0.20 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5864 attached
, child_tidptr=0x55555bdac650) = 5864
[pid 5864] set_robust_list(0x55555bdac660, 24) = 0
[pid 5864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5864] setpgid(0, 0) = 0
[pid 5864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5864] write(3, "1000", 4) = 4
[pid 5864] close(3) = 0
executing program
[pid 5864] write(1, "executing program\n", 18) = 18
[pid 5864] memfd_create("syzkaller", 0) = 3
[pid 5864] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000
[pid 5864] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5864] munmap(0x7f86bac00000, 138412032) = 0
[pid 5864] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5864] close(3) = 0
[pid 5864] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5864] fallocate(3, 0, 29521, 32769) = 0
[pid 5864] ioctl(3, _IOC(_IOC_WRITE, 0x6f, 0x6, 0x40), 0x2000000000c0) = -1 ENOTTY (Inappropriate ioctl for device)
[pid 5864] exit_group(0) = ?
[pid 5864] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5864, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5865 attached
, child_tidptr=0x55555bdac650) = 5865
[pid 5865] set_robust_list(0x55555bdac660, 24) = 0
[pid 5865] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5865] setpgid(0, 0) = 0
[pid 5865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5865] write(3, "1000", 4) = 4
[pid 5865] close(3) = 0
executing program
[pid 5865] write(1, "executing program\n", 18) = 18
[pid 5865] memfd_create("syzkaller", 0) = 3
[pid 5865] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86bac00000