./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3927661615

<...>
Warning: Permanently added '10.128.1.101' (ECDSA) to the list of known hosts.
execve("./syz-executor3927661615", ["./syz-executor3927661615"], 0x7ffd7f807090 /* 10 vars */) = 0
brk(NULL)                               = 0x555556d7f000
brk(0x555556d7fc40)                     = 0x555556d7fc40
arch_prctl(ARCH_SET_FS, 0x555556d7f300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
set_tid_address(0x555556d7f5d0)         = 3614
set_robust_list(0x555556d7f5e0, 24)     = 0
rt_sigaction(SIGRTMIN, {sa_handler=0x7fbc2f36d430, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7fbc2f36db00}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {sa_handler=0x7fbc2f36d4d0, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fbc2f36db00}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor3927661615", 4096) = 28
brk(0x555556da0c40)                     = 0x555556da0c40
brk(0x555556da1000)                     = 0x555556da1000
mprotect(0x7fbc2f42e000, 16384, PROT_READ) = 0
mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000
mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000
mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000
openat(AT_FDCWD, "/sys/kernel/debug/failslab/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3
write(3, "N", 1)                        = 1
close(3)                                = 0
openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/ignore-private", O_WRONLY|O_CLOEXEC) = 3
write(3, "N", 1)                        = 1
close(3)                                = 0
openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem", O_WRONLY|O_CLOEXEC) = 3
write(3, "N", 1)                        = 1
close(3)                                = 0
openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3
write(3, "N", 1)                        = 1
close(3)                                = 0
openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/min-order", O_WRONLY|O_CLOEXEC) = 3
write(3, "0", 1)                        = 1
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556d7f5d0) = 3615
./strace-static-x86_64: Process 3615 attached
[pid  3615] set_robust_list(0x555556d7f5e0, 24) = 0
[pid  3615] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3615] setpgid(0, 0)               = 0
[pid  3615] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3615] write(3, "1000", 4)         = 4
[pid  3615] close(3)                    = 0
[pid  3615] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3615] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fbc2f33d000
[pid  3615] mprotect(0x7fbc2f33e000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  3615] clone(child_stack=0x7fbc2f35d3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3616 attached
, parent_tid=[3616], tls=0x7fbc2f35d700, child_tidptr=0x7fbc2f35d9d0) = 3616
[pid  3615] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3615] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3616] set_robust_list(0x7fbc2f35d9e0, 24) = 0
[pid  3616] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3
[pid  3616] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3615] <... futex resumed>)        = 0
[pid  3615] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3615] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3616] ioctl(3, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE) = 0
[pid  3616] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3615] <... futex resumed>)        = 0
[pid  3615] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3615] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3616] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4
[pid  3616] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3615] <... futex resumed>)        = 0
[pid  3615] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3615] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3616] socketpair(AF_UNIX, SOCK_STREAM, 0, [5, 6]) = 0
[pid  3616] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3615] <... futex resumed>)        = 0
[pid  3615] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3615] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[   49.993536][   T27] audit: type=1400 audit(1665001826.130:75): avc:  denied  { execmem } for  pid=3614 comm="syz-executor392" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   50.023383][   T27] audit: type=1400 audit(1665001826.160:76): avc:  denied  { read } for  pid=3615 comm="syz-executor392" name="nbd0" dev="devtmpfs" ino=660 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1
[   50.047489][   T27] audit: type=1400 audit(1665001826.160:77): avc:  denied  { open } for  pid=3615 comm="syz-executor392" path="/dev/nbd0" dev="devtmpfs" ino=660 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1
[pid  3616] ioctl(4, NBD_SET_SOCK, 5 <unfinished ...>
[pid  3615] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  3615] futex(0x7fbc2f4344fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3615] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fbc2f31c000
[pid  3615] mprotect(0x7fbc2f31d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  3615] clone(child_stack=0x7fbc2f33c3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3617 attached
, parent_tid=[3617], tls=0x7fbc2f33c700, child_tidptr=0x7fbc2f33c9d0) = 3617
[pid  3617] set_robust_list(0x7fbc2f33c9e0, 24 <unfinished ...>
[pid  3615] futex(0x7fbc2f4344f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3617] <... set_robust_list resumed>) = 0
[pid  3615] <... futex resumed>)        = 0
[pid  3617] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY <unfinished ...>
[pid  3615] futex(0x7fbc2f4344fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3617] <... openat resumed>)       = 7
[pid  3617] futex(0x7fbc2f4344fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3615] <... futex resumed>)        = 0
[pid  3617] futex(0x7fbc2f4344f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3615] futex(0x7fbc2f4344f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3617] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3615] <... futex resumed>)        = 0
[pid  3617] ioctl(4, NBD_SET_SOCK, 5 <unfinished ...>
[pid  3615] futex(0x7fbc2f4344fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3616] <... ioctl resumed>)        = 0
[pid  3616] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[   50.071895][   T27] audit: type=1400 audit(1665001826.160:78): avc:  denied  { ioctl } for  pid=3615 comm="syz-executor392" path="/dev/nbd0" dev="devtmpfs" ino=660 ioctlcmd=0xab0a scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1
[pid  3616] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3617] <... ioctl resumed>)        = -1 EBUSY (Device or resource busy)
[pid  3615] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  3617] futex(0x7fbc2f4344fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3615] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3617] <... futex resumed>)        = 0
[pid  3617] futex(0x7fbc2f4344f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3615] <... futex resumed>)        = 1
[pid  3616] <... futex resumed>)        = 0
[pid  3615] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3616] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 8
[pid  3616] write(8, "13", 2)           = 2
[pid  3616] ioctl(7, NBD_DO_IT <unfinished ...>
[pid  3615] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  3615] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  3615] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[   50.159640][ T3617] block nbd0: Device being setup by another task
[pid  3615] exit_group(0 <unfinished ...>
[pid  3617] <... futex resumed>)        = ?
[pid  3616] <... ioctl resumed>)        = ?
[pid  3617] +++ exited with 0 +++
[pid  3615] <... exit_group resumed>)   = ?
[pid  3616] +++ exited with 0 +++
[pid  3615] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3615, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556d7f5d0) = 3620
./strace-static-x86_64: Process 3620 attached
[pid  3620] set_robust_list(0x555556d7f5e0, 24) = 0
[pid  3620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3620] setpgid(0, 0)               = 0
[pid  3620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3620] write(3, "1000", 4)         = 4
[pid  3620] close(3)                    = 0
[pid  3620] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3620] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fbc2f33d000
[pid  3620] mprotect(0x7fbc2f33e000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  3620] clone(child_stack=0x7fbc2f35d3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3621 attached
, parent_tid=[3621], tls=0x7fbc2f35d700, child_tidptr=0x7fbc2f35d9d0) = 3621
[pid  3621] set_robust_list(0x7fbc2f35d9e0, 24) = 0
[pid  3621] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3620] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3621] <... futex resumed>)        = 0
[pid  3621] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3
[pid  3620] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3621] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3621] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3620] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3620] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3621] <... futex resumed>)        = 0
[pid  3620] <... futex resumed>)        = 1
[pid  3621] ioctl(3, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE) = 0
[pid  3620] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3621] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3620] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3621] <... futex resumed>)        = 0
[pid  3620] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3621] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4
[pid  3620] <... futex resumed>)        = 0
[pid  3620] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3621] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3620] <... futex resumed>)        = 0
[pid  3620] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3620] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3621] <... futex resumed>)        = 1
[pid  3621] socketpair(AF_UNIX, SOCK_STREAM, 0, [5, 6]) = 0
[pid  3621] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3620] <... futex resumed>)        = 0
[pid  3620] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3620] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3621] <... futex resumed>)        = 1
[   50.354064][ T3616] block nbd0: shutting down sockets
[pid  3621] ioctl(4, NBD_SET_SOCK, 5)   = 0
[pid  3621] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3620] <... futex resumed>)        = 0
[pid  3621] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3620] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3621] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3620] <... futex resumed>)        = 0
[pid  3621] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY <unfinished ...>
[pid  3620] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3621] <... openat resumed>)       = 7
[pid  3621] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3620] <... futex resumed>)        = 0
[pid  3621] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3620] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3621] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3620] <... futex resumed>)        = 0
[pid  3621] ioctl(4, NBD_SET_SOCK, 5 <unfinished ...>
[pid  3620] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3621] <... ioctl resumed>)        = 0
[pid  3621] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3620] <... futex resumed>)        = 0
[pid  3621] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3620] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3621] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3620] <... futex resumed>)        = 0
[pid  3621] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR <unfinished ...>
[pid  3620] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3621] <... openat resumed>)       = 8
[pid  3621] write(8, "13", 2)           = 2
[pid  3621] ioctl(7, NBD_DO_IT <unfinished ...>
[pid  3620] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  3620] exit_group(0)               = ?
[pid  3621] <... ioctl resumed>)        = ?
[pid  3621] +++ exited with 0 +++
[pid  3620] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3620, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3623 attached
, child_tidptr=0x555556d7f5d0) = 3623
[pid  3623] set_robust_list(0x555556d7f5e0, 24) = 0
[pid  3623] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3623] setpgid(0, 0)               = 0
[pid  3623] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3623] write(3, "1000", 4)         = 4
[   50.657392][ T3621] block nbd0: shutting down sockets
[pid  3623] close(3)                    = 0
[pid  3623] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3623] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fbc2f33d000
[pid  3623] mprotect(0x7fbc2f33e000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  3623] clone(child_stack=0x7fbc2f35d3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3624 attached
, parent_tid=[3624], tls=0x7fbc2f35d700, child_tidptr=0x7fbc2f35d9d0) = 3624
[pid  3624] set_robust_list(0x7fbc2f35d9e0, 24 <unfinished ...>
[pid  3623] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3623] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3624] <... set_robust_list resumed>) = 0
[pid  3624] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3
[pid  3624] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3623] <... futex resumed>)        = 0
[pid  3623] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3623] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3624] ioctl(3, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE) = 0
[pid  3624] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3623] <... futex resumed>)        = 0
[pid  3623] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3624] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY <unfinished ...>
[pid  3623] <... futex resumed>)        = 0
[pid  3623] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3624] <... openat resumed>)       = 4
[pid  3624] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3623] <... futex resumed>)        = 0
[pid  3623] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3624] socketpair(AF_UNIX, SOCK_STREAM, 0,  <unfinished ...>
[pid  3623] <... futex resumed>)        = 0
[pid  3623] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3624] <... socketpair resumed>[5, 6]) = 0
[pid  3624] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3623] <... futex resumed>)        = 0
[pid  3623] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3624] ioctl(4, NBD_SET_SOCK, 5 <unfinished ...>
[pid  3623] <... futex resumed>)        = 0
[pid  3623] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3624] <... ioctl resumed>)        = 0
[pid  3624] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3623] <... futex resumed>)        = 0
[pid  3624] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3623] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3624] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3623] <... futex resumed>)        = 0
[pid  3624] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY <unfinished ...>
[pid  3623] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3624] <... openat resumed>)       = 7
[pid  3624] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3623] <... futex resumed>)        = 0
[pid  3624] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3623] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3624] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3623] <... futex resumed>)        = 0
[pid  3624] ioctl(4, NBD_SET_SOCK, 5 <unfinished ...>
[pid  3623] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3624] <... ioctl resumed>)        = 0
[pid  3624] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3623] <... futex resumed>)        = 0
[pid  3624] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3623] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3624] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3623] <... futex resumed>)        = 0
[pid  3624] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR <unfinished ...>
[pid  3623] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3624] <... openat resumed>)       = 8
[pid  3624] write(8, "13", 2)           = 2
[pid  3624] ioctl(7, NBD_DO_IT <unfinished ...>
[pid  3623] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  3623] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  3623] exit_group(0 <unfinished ...>
[pid  3624] <... ioctl resumed>)        = ?
[pid  3623] <... exit_group resumed>)   = ?
[pid  3624] +++ exited with 0 +++
[pid  3623] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3623, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556d7f5d0) = 3625
./strace-static-x86_64: Process 3625 attached
[pid  3625] set_robust_list(0x555556d7f5e0, 24) = 0
[pid  3625] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3625] setpgid(0, 0)               = 0
[pid  3625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3625] write(3, "1000", 4)         = 4
[pid  3625] close(3)                    = 0
[pid  3625] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3625] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fbc2f33d000
[pid  3625] mprotect(0x7fbc2f33e000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  3625] clone(child_stack=0x7fbc2f35d3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3626], tls=0x7fbc2f35d700, child_tidptr=0x7fbc2f35d9d0) = 3626
[pid  3625] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3625] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3626 attached
 <unfinished ...>
[pid  3626] set_robust_list(0x7fbc2f35d9e0, 24) = 0
[pid  3626] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3
[pid  3626] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3625] <... futex resumed>)        = 0
[pid  3625] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3625] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3626] <... futex resumed>)        = 1
[pid  3626] ioctl(3, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE) = 0
[pid  3626] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3625] <... futex resumed>)        = 0
[pid  3625] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3625] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3626] <... futex resumed>)        = 1
[pid  3626] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4
[pid  3626] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3625] <... futex resumed>)        = 0
[pid  3625] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3625] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3626] <... futex resumed>)        = 1
[pid  3626] socketpair(AF_UNIX, SOCK_STREAM, 0, [5, 6]) = 0
[pid  3626] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3625] <... futex resumed>)        = 0
[pid  3625] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3625] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3626] <... futex resumed>)        = 1
[   50.971916][ T3624] block nbd0: shutting down sockets
[pid  3626] ioctl(4, NBD_SET_SOCK, 5)   = 0
[pid  3626] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3625] <... futex resumed>)        = 0
[pid  3626] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY <unfinished ...>
[pid  3625] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3626] <... openat resumed>)       = 7
[pid  3625] <... futex resumed>)        = 0
[pid  3626] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3625] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3626] <... futex resumed>)        = 0
[pid  3625] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3626] ioctl(4, NBD_SET_SOCK, 5 <unfinished ...>
[pid  3625] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3625] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3626] <... ioctl resumed>)        = 0
[pid  3626] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3625] <... futex resumed>)        = 0
[pid  3626] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3625] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3626] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3625] <... futex resumed>)        = 0
[pid  3626] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR <unfinished ...>
[pid  3625] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3626] <... openat resumed>)       = 8
[pid  3626] write(8, "13", 2)           = 2
[pid  3626] ioctl(7, NBD_DO_IT <unfinished ...>
[pid  3625] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  3625] exit_group(0)               = ?
[pid  3626] <... ioctl resumed>)        = ?
[pid  3626] +++ exited with 0 +++
[pid  3625] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3625, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3627 attached
, child_tidptr=0x555556d7f5d0) = 3627
[pid  3627] set_robust_list(0x555556d7f5e0, 24) = 0
[pid  3627] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3627] setpgid(0, 0)               = 0
[pid  3627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3627] write(3, "1000", 4)         = 4
[pid  3627] close(3)                    = 0
[pid  3627] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3627] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fbc2f33d000
[pid  3627] mprotect(0x7fbc2f33e000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  3627] clone(child_stack=0x7fbc2f35d3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3628 attached
, parent_tid=[3628], tls=0x7fbc2f35d700, child_tidptr=0x7fbc2f35d9d0) = 3628
[pid  3628] set_robust_list(0x7fbc2f35d9e0, 24) = 0
[pid  3628] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3627] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3628] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3627] <... futex resumed>)        = 0
[pid  3628] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY <unfinished ...>
[pid  3627] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3628] <... openat resumed>)       = 3
[pid  3628] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3628] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3627] <... futex resumed>)        = 0
[pid  3627] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3628] <... futex resumed>)        = 0
[pid  3627] <... futex resumed>)        = 1
[pid  3628] ioctl(3, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE) = 0
[pid  3628] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3628] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3627] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid  3627] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3628] <... futex resumed>)        = 0
[pid  3627] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3628] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4
[pid  3628] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3628] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3627] <... futex resumed>)        = 0
[pid  3628] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3627] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3627] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3628] socketpair(AF_UNIX, SOCK_STREAM, 0, [5, 6]) = 0
[pid  3628] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3627] <... futex resumed>)        = 0
[pid  3628] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3627] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3628] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3627] <... futex resumed>)        = 0
[pid  3628] ioctl(4, NBD_SET_SOCK, 5 <unfinished ...>
[   51.255371][ T3626] block nbd0: shutting down sockets
[pid  3627] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3628] <... ioctl resumed>)        = 0
[pid  3628] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3627] <... futex resumed>)        = 0
[pid  3628] <... futex resumed>)        = 1
[pid  3627] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3628] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY <unfinished ...>
[pid  3627] <... futex resumed>)        = 0
[pid  3627] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3628] <... openat resumed>)       = 7
[pid  3628] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3627] <... futex resumed>)        = 0
[pid  3627] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3627] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3628] ioctl(4, NBD_SET_SOCK, 5)   = 0
[pid  3628] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3627] <... futex resumed>)        = 0
[pid  3628] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR <unfinished ...>
[pid  3627] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3627] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3628] <... openat resumed>)       = 8
[pid  3628] write(8, "13", 2)           = 2
[pid  3628] ioctl(7, NBD_DO_IT <unfinished ...>
[pid  3627] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[   51.394414][ T3628] debugfs: out of free dentries, can not create file 'tasks'
[pid  3627] exit_group(0)               = ?
[pid  3628] <... ioctl resumed>)        = ?
[pid  3628] +++ exited with 0 +++
[pid  3627] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3627, si_uid=0, si_status=0, si_utime=2, si_stime=3} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556d7f5d0) = 3629
./strace-static-x86_64: Process 3629 attached
[pid  3629] set_robust_list(0x555556d7f5e0, 24) = 0
[pid  3629] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[   51.577555][ T3628] block nbd0: shutting down sockets
[pid  3629] setpgid(0, 0)               = 0
[pid  3629] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3629] write(3, "1000", 4)         = 4
[pid  3629] close(3)                    = 0
[pid  3629] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3629] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fbc2f33d000
[pid  3629] mprotect(0x7fbc2f33e000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  3629] clone(child_stack=0x7fbc2f35d3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3630 attached
, parent_tid=[3630], tls=0x7fbc2f35d700, child_tidptr=0x7fbc2f35d9d0) = 3630
[pid  3630] set_robust_list(0x7fbc2f35d9e0, 24) = 0
[pid  3630] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3629] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3630] <... futex resumed>)        = 0
[pid  3630] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY <unfinished ...>
[pid  3629] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3630] <... openat resumed>)       = 3
[pid  3630] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3630] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3629] <... futex resumed>)        = 0
[pid  3629] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3630] <... futex resumed>)        = 0
[pid  3629] <... futex resumed>)        = 1
[pid  3630] ioctl(3, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE) = 0
[pid  3630] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3629] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid  3629] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3629] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3630] <... futex resumed>)        = 1
[pid  3629] <... futex resumed>)        = 0
[pid  3630] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY <unfinished ...>
[pid  3629] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=49000000} <unfinished ...>
[pid  3630] <... openat resumed>)       = 4
[pid  3630] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3629] <... futex resumed>)        = 0
[pid  3630] socketpair(AF_UNIX, SOCK_STREAM, 0,  <unfinished ...>
[pid  3629] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3629] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3630] <... socketpair resumed>[5, 6]) = 0
[pid  3630] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3629] <... futex resumed>)        = 0
[pid  3630] ioctl(4, NBD_SET_SOCK, 5 <unfinished ...>
[pid  3629] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3629] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3630] <... ioctl resumed>)        = 0
[pid  3630] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3629] <... futex resumed>)        = 0
[pid  3630] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  3629] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3630] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY <unfinished ...>
[pid  3629] <... futex resumed>)        = 0
[pid  3630] <... openat resumed>)       = 7
[pid  3629] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3630] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3629] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3630] <... futex resumed>)        = 0
[pid  3629] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3630] ioctl(4, NBD_SET_SOCK, 5 <unfinished ...>
[pid  3629] <... futex resumed>)        = 0
[pid  3629] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3630] <... ioctl resumed>)        = 0
[pid  3630] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3630] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3629] <... futex resumed>)        = 0
[pid  3629] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3630] <... futex resumed>)        = 0
[pid  3629] <... futex resumed>)        = 1
[pid  3630] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR <unfinished ...>
[pid  3629] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3630] <... openat resumed>)       = 8
[pid  3630] write(8, "13", 2)           = 2
[pid  3630] ioctl(7, NBD_DO_IT <unfinished ...>
[pid  3629] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[   51.724220][ T3630] debugfs: out of free dentries, can not create file 'tasks'
[pid  3629] exit_group(0)               = ?
[pid  3630] <... ioctl resumed>)        = ?
[pid  3630] +++ exited with 0 +++
[pid  3629] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3629, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3631 attached
, child_tidptr=0x555556d7f5d0) = 3631
[pid  3631] set_robust_list(0x555556d7f5e0, 24) = 0
[pid  3631] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3631] setpgid(0, 0)               = 0
[pid  3631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3631] write(3, "1000", 4)         = 4
[pid  3631] close(3)                    = 0
[pid  3631] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3631] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fbc2f33d000
[pid  3631] mprotect(0x7fbc2f33e000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  3631] clone(child_stack=0x7fbc2f35d3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3632 attached
, parent_tid=[3632], tls=0x7fbc2f35d700, child_tidptr=0x7fbc2f35d9d0) = 3632
[pid  3632] set_robust_list(0x7fbc2f35d9e0, 24) = 0
[pid  3632] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3631] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3632] <... futex resumed>)        = 0
[pid  3632] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3
[pid  3631] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3632] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3632] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3631] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3631] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3632] <... futex resumed>)        = 0
[pid  3631] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3632] ioctl(3, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE) = 0
[pid  3632] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3631] <... futex resumed>)        = 0
[pid  3631] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3631] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3632] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4
[pid  3632] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3631] <... futex resumed>)        = 0
[pid  3631] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3632] socketpair(AF_UNIX, SOCK_STREAM, 0,  <unfinished ...>
[pid  3631] <... futex resumed>)        = 0
[pid  3632] <... socketpair resumed>[5, 6]) = 0
[pid  3631] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3632] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3631] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3632] <... futex resumed>)        = 0
[pid  3631] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3632] ioctl(4, NBD_SET_SOCK, 5 <unfinished ...>
[pid  3631] <... futex resumed>)        = 0
[   51.905600][ T3630] block nbd0: shutting down sockets
[pid  3631] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3632] <... ioctl resumed>)        = 0
[pid  3632] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3631] <... futex resumed>)        = 0
[pid  3631] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3631] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3632] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 7
[pid  3632] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3631] <... futex resumed>)        = 0
[pid  3631] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3631] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3632] ioctl(4, NBD_SET_SOCK, 5)   = 0
[pid  3632] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3631] <... futex resumed>)        = 0
[pid  3632] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3631] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3632] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3631] <... futex resumed>)        = 0
[pid  3632] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR <unfinished ...>
[pid  3631] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3632] <... openat resumed>)       = 8
[pid  3632] write(8, "13", 2)           = 2
[pid  3632] ioctl(7, NBD_DO_IT <unfinished ...>
[pid  3631] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[   52.033757][ T3632] debugfs: out of free dentries, can not create file 'tasks'
[pid  3631] exit_group(0)               = ?
[pid  3632] <... ioctl resumed>)        = ?
[pid  3632] +++ exited with 0 +++
[pid  3631] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3631, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3633 attached
, child_tidptr=0x555556d7f5d0) = 3633
[pid  3633] set_robust_list(0x555556d7f5e0, 24) = 0
[pid  3633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3633] setpgid(0, 0)               = 0
[pid  3633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3633] write(3, "1000", 4)         = 4
[pid  3633] close(3)                    = 0
[pid  3633] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3633] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fbc2f33d000
[pid  3633] mprotect(0x7fbc2f33e000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  3633] clone(child_stack=0x7fbc2f35d3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3634 attached
 <unfinished ...>
[pid  3634] set_robust_list(0x7fbc2f35d9e0, 24 <unfinished ...>
[pid  3633] <... clone resumed>, parent_tid=[3634], tls=0x7fbc2f35d700, child_tidptr=0x7fbc2f35d9d0) = 3634
[pid  3634] <... set_robust_list resumed>) = 0
[pid  3633] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3634] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY <unfinished ...>
[pid  3633] <... futex resumed>)        = 0
[pid  3634] <... openat resumed>)       = 3
[pid  3634] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3634] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3633] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid  3633] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3634] <... futex resumed>)        = 0
[pid  3633] <... futex resumed>)        = 1
[pid  3634] ioctl(3, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE <unfinished ...>
[pid  3633] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3634] <... ioctl resumed>)        = 0
[pid  3634] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3633] <... futex resumed>)        = 0
[pid  3634] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3633] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3634] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3633] <... futex resumed>)        = 0
[pid  3634] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY <unfinished ...>
[pid  3633] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3634] <... openat resumed>)       = 4
[pid  3634] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3633] <... futex resumed>)        = 0
[pid  3634] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3633] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3634] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3633] <... futex resumed>)        = 0
[pid  3634] socketpair(AF_UNIX, SOCK_STREAM, 0,  <unfinished ...>
[pid  3633] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3634] <... socketpair resumed>[5, 6]) = 0
[pid  3634] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3633] <... futex resumed>)        = 0
[pid  3633] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3634] ioctl(4, NBD_SET_SOCK, 5 <unfinished ...>
[pid  3633] <... futex resumed>)        = 0
[   52.216228][ T3632] block nbd0: shutting down sockets
[pid  3633] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  3633] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  3633] futex(0x7fbc2f4344fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3633] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fbc2f31c000
[pid  3633] mprotect(0x7fbc2f31d000, 131072, PROT_READ|PROT_WRITE <unfinished ...>
[pid  3634] <... ioctl resumed>)        = 0
[pid  3633] <... mprotect resumed>)     = 0
[pid  3634] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3633] clone(child_stack=0x7fbc2f33c3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID <unfinished ...>
[pid  3634] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3633] <... clone resumed>, parent_tid=[3635], tls=0x7fbc2f33c700, child_tidptr=0x7fbc2f33c9d0) = 3635
./strace-static-x86_64: Process 3635 attached
[pid  3633] futex(0x7fbc2f4344f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3633] futex(0x7fbc2f4344fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3635] set_robust_list(0x7fbc2f33c9e0, 24) = 0
[pid  3635] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 7
[pid  3635] futex(0x7fbc2f4344fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3633] <... futex resumed>)        = 0
[pid  3635] <... futex resumed>)        = 1
[pid  3633] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3634] <... futex resumed>)        = 0
[pid  3633] <... futex resumed>)        = 1
[pid  3634] ioctl(4, NBD_SET_SOCK, 5 <unfinished ...>
[pid  3633] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3635] futex(0x7fbc2f4344f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3634] <... ioctl resumed>)        = 0
[pid  3634] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3633] <... futex resumed>)        = 0
[pid  3634] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3633] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3634] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  3633] <... futex resumed>)        = 0
[pid  3634] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 8
[pid  3633] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3634] write(8, "13", 2)           = 2
[pid  3634] ioctl(7, NBD_DO_IT <unfinished ...>
[pid  3633] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  3633] exit_group(0 <unfinished ...>
[pid  3635] <... futex resumed>)        = ?
[pid  3633] <... exit_group resumed>)   = ?
[pid  3635] +++ exited with 0 +++
[pid  3634] <... ioctl resumed>)        = ?
[pid  3634] +++ exited with 0 +++
[pid  3633] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3633, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556d7f5d0) = 3636
./strace-static-x86_64: Process 3636 attached
[pid  3636] set_robust_list(0x555556d7f5e0, 24) = 0
[pid  3636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3636] setpgid(0, 0)               = 0
[pid  3636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3636] write(3, "1000", 4)         = 4
[pid  3636] close(3)                    = 0
[pid  3636] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3636] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fbc2f33d000
[pid  3636] mprotect(0x7fbc2f33e000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  3636] clone(child_stack=0x7fbc2f35d3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3637], tls=0x7fbc2f35d700, child_tidptr=0x7fbc2f35d9d0) = 3637
[pid  3636] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3636] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3637 attached
 <unfinished ...>
[pid  3637] set_robust_list(0x7fbc2f35d9e0, 24) = 0
[pid  3637] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3
[pid  3637] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3636] <... futex resumed>)        = 0
[pid  3636] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3636] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3637] <... futex resumed>)        = 1
[pid  3637] ioctl(3, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE) = 0
[pid  3637] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3636] <... futex resumed>)        = 0
[pid  3636] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3636] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3637] <... futex resumed>)        = 1
[pid  3637] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4
[pid  3637] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3636] <... futex resumed>)        = 0
[pid  3636] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3636] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3637] <... futex resumed>)        = 1
[pid  3637] socketpair(AF_UNIX, SOCK_STREAM, 0, [5, 6]) = 0
[pid  3637] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3636] <... futex resumed>)        = 0
[pid  3636] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3636] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3637] <... futex resumed>)        = 1
[   52.527478][ T3634] block nbd0: shutting down sockets
[pid  3637] ioctl(4, NBD_SET_SOCK, 5 <unfinished ...>
[pid  3636] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  3636] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  3636] futex(0x7fbc2f4344fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3636] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fbc2f31c000
[pid  3636] mprotect(0x7fbc2f31d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  3636] clone(child_stack=0x7fbc2f33c3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3638], tls=0x7fbc2f33c700, child_tidptr=0x7fbc2f33c9d0) = 3638
[pid  3636] futex(0x7fbc2f4344f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3636] futex(0x7fbc2f4344fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3638 attached
 <unfinished ...>
[pid  3638] set_robust_list(0x7fbc2f33c9e0, 24) = 0
[pid  3638] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 7
[pid  3638] futex(0x7fbc2f4344fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3636] <... futex resumed>)        = 0
[pid  3636] futex(0x7fbc2f4344f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3636] futex(0x7fbc2f4344fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3638] <... futex resumed>)        = 1
[pid  3638] ioctl(4, NBD_SET_SOCK, 5 <unfinished ...>
[pid  3637] <... ioctl resumed>)        = 0
[pid  3637] futex(0x7fbc2f4344ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  3637] futex(0x7fbc2f4344e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3638] <... ioctl resumed>)        = -1 EBUSY (Device or resource busy)
[pid  3638] futex(0x7fbc2f4344fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  3636] <... futex resumed>)        = 0
[pid  3638] futex(0x7fbc2f4344f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3636] futex(0x7fbc2f4344e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  3637] <... futex resumed>)        = 0
[pid  3636] <... futex resumed>)        = 1
[pid  3637] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR <unfinished ...>
[pid  3636] futex(0x7fbc2f4344ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  3637] <... openat resumed>)       = 8
[pid  3637] write(8, "13", 2)           = 2
[   52.649651][ T3638] block nbd0: Device being setup by another task
[   52.689807][ T3637] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
[   52.701530][ T3637] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
[   52.709925][ T3637] CPU: 0 PID: 3637 Comm: syz-executor392 Not tainted 6.0.0-syzkaller-03015-g2bca25eaeba6 #0
[   52.719970][ T3637] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
[   52.730003][ T3637] RIP: 0010:blk_mq_free_rqs+0x3f8/0x960
[   52.735547][ T3637] Code: de e8 ec fa 94 fd 83 fb 3f 0f 87 14 8a 67 05 e8 1e fe 94 fd b8 00 10 00 00 89 d9 48 d3 e0 4c 01 e8 48 89 44 24 08 48 8b 04 24 <0f> b6 00 84 c0 74 08 3c 03 0f 8e 96 03 00 00 41 8b 1f 31 ff 31 ed
[   52.755134][ T3637] RSP: 0018:ffffc9000351faa8 EFLAGS: 00010286
[   52.761185][ T3637] RAX: dffffc0000000000 RBX: 0000000000000004 RCX: 0000000000000004
[   52.769163][ T3637] RDX: ffff88807d2cc100 RSI: ffffffff83e54302 RDI: 0000000000000005
[   52.777150][ T3637] RBP: ffff888021672000 R08: 0000000000000005 R09: 000000000000003f
[   52.785122][ T3637] R10: 0000000000000004 R11: ffff88813fffa700 R12: ffffc9000351fb60
[   52.793091][ T3637] R13: ffff888070470000 R14: ffff888147537000 R15: 0000000000000000
[   52.801055][ T3637] FS:  00007fbc2f35d700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
[   52.809984][ T3637] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   52.816565][ T3637] CR2: 00007fbc2f3e2860 CR3: 00000000747b7000 CR4: 00000000003506f0
[   52.824532][ T3637] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   52.832498][ T3637] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   52.840464][ T3637] Call Trace:
[   52.843737][ T3637]  <TASK>
[   52.846664][ T3637]  ? _raw_spin_unlock_irq+0x1f/0x40
[   52.851875][ T3637]  blk_mq_sched_free_rqs+0x1d4/0x250
[   52.857164][ T3637]  ? blk_mq_sched_insert_requests+0x9a0/0x9a0
[   52.863235][ T3637]  ? kobject_put+0xb9/0x4c0
[   52.867835][ T3637]  ? kobject_del+0x44/0x60
[   52.872260][ T3637]  elevator_switch_mq+0xc2/0x6c0
[   52.877198][ T3637]  blk_mq_update_nr_hw_queues+0x3ee/0xdf0
[   52.882916][ T3637]  ? blk_mq_init_queue+0x140/0x140
[   52.888022][ T3637]  ? tomoyo_execute_permission+0x4a0/0x4a0
[   52.893829][ T3637]  nbd_start_device+0x153/0xc30
[   52.898686][ T3637]  ? security_capable+0x8f/0xc0
[   52.903542][ T3637]  nbd_ioctl+0x5a1/0xbd0
[   52.907792][ T3637]  ? blkdev_bszset+0x1f0/0x1f0
[   52.912556][ T3637]  ? nbd_start_device+0xc30/0xc30
[   52.917585][ T3637]  ? find_held_lock+0x2d/0x110
[   52.922354][ T3637]  ? ptrace_notify+0xfa/0x140
[   52.927030][ T3637]  ? nbd_start_device+0xc30/0xc30
[   52.932065][ T3637]  blkdev_ioctl+0x36e/0x800
[   52.936655][ T3637]  ? blkdev_common_ioctl+0x1a30/0x1a30
[   52.942117][ T3637]  ? selinux_file_ioctl+0xb1/0x270
[   52.947230][ T3637]  ? blkdev_common_ioctl+0x1a30/0x1a30
[   52.952689][ T3637]  __x64_sys_ioctl+0x193/0x200
[   52.957474][ T3637]  do_syscall_64+0x35/0xb0
[   52.961896][ T3637]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[   52.967801][ T3637] RIP: 0033:0x7fbc2f3b0319
[   52.972213][ T3637] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
[   52.991830][ T3637] RSP: 002b:00007fbc2f35d2e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   53.000243][ T3637] RAX: ffffffffffffffda RBX: 00007fbc2f4344e0 RCX: 00007fbc2f3b0319
[   53.008211][ T3637] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007
[   53.016177][ T3637] RBP: 00007fbc2f401194 R08: 0000000000000002 R09: 0000000000003331
[   53.024150][ T3637] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbc2f4344ec
[   53.032114][ T3637] R13: 00007fbc2f35d2f0 R14: 00007fbc2f4344e8 R15: 0000000000000002
[pid  3637] ioctl(7, NBD_DO_IT <unfinished ...>
[pid  3636] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[   53.040082][ T3637]  </TASK>
[   53.043093][ T3637] Modules linked in:
[   53.047100][ T3637] ---[ end trace 0000000000000000 ]---
[   53.052950][ T3637] RIP: 0010:blk_mq_free_rqs+0x3f8/0x960
[   53.058734][ T3637] Code: de e8 ec fa 94 fd 83 fb 3f 0f 87 14 8a 67 05 e8 1e fe 94 fd b8 00 10 00 00 89 d9 48 d3 e0 4c 01 e8 48 89 44 24 08 48 8b 04 24 <0f> b6 00 84 c0 74 08 3c 03 0f 8e 96 03 00 00 41 8b 1f 31 ff 31 ed
[   53.078539][ T3637] RSP: 0018:ffffc9000351faa8 EFLAGS: 00010286
[   53.084765][ T3637] RAX: dffffc0000000000 RBX: 0000000000000004 RCX: 0000000000000004
[   53.092948][ T3637] RDX: ffff88807d2cc100 RSI: ffffffff83e54302 RDI: 0000000000000005
[   53.100936][ T3637] RBP: ffff888021672000 R08: 0000000000000005 R09: 000000000000003f
[   53.108919][ T3637] R10: 0000000000000004 R11: ffff88813fffa700 R12: ffffc9000351fb60
[   53.116937][ T3637] R13: ffff888070470000 R14: ffff888147537000 R15: 0000000000000000
[   53.124931][ T3637] FS:  00007fbc2f35d700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
[   53.133906][ T3637] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   53.140515][ T3637] CR2: 00007fbc2f3f14c0 CR3: 00000000747b7000 CR4: 00000000003506f0
[   53.148569][ T3637] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   53.156581][ T3637] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   53.164604][ T3637] Kernel panic - not syncing: Fatal exception
[   53.170842][ T3637] Kernel Offset: disabled
[   53.175164][ T3637] Rebooting in 86400 seconds..