./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4265317262 <...> Warning: Permanently added '10.128.0.142' (ECDSA) to the list of known hosts. execve("./syz-executor4265317262", ["./syz-executor4265317262"], 0x7ffe2f779b00 /* 10 vars */) = 0 brk(NULL) = 0x5555564fd000 brk(0x5555564fdc40) = 0x5555564fdc40 arch_prctl(ARCH_SET_FS, 0x5555564fd300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 set_tid_address(0x5555564fd5d0) = 3611 set_robust_list(0x5555564fd5e0, 24) = 0 rt_sigaction(SIGRTMIN, {sa_handler=0x7f1c14ccc430, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7f1c14cccb00}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f1c14ccc4d0, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1c14cccb00}, 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-executor4265317262", 4096) = 28 brk(0x55555651ec40) = 0x55555651ec40 brk(0x55555651f000) = 0x55555651f000 mprotect(0x7f1c14d8d000, 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./strace-static-x86_64: Process 3612 attached , child_tidptr=0x5555564fd5d0) = 3612 [pid 3612] set_robust_list(0x5555564fd5e0, 24) = 0 [pid 3612] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3612] setpgid(0, 0) = 0 [pid 3612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3612] write(3, "1000", 4) = 4 [pid 3612] close(3) = 0 [pid 3612] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3612] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1c14c9c000 [pid 3612] mprotect(0x7f1c14c9d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3612] clone(child_stack=0x7f1c14cbc3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3613], tls=0x7f1c14cbc700, child_tidptr=0x7f1c14cbc9d0) = 3613 ./strace-static-x86_64: Process 3613 attached [pid 3613] set_robust_list(0x7f1c14cbc9e0, 24) = 0 [pid 3613] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3612] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3613] <... futex resumed>) = 0 [pid 3612] <... futex resumed>) = 1 [pid 3613] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3612] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] <... openat resumed>) = 3 [pid 3613] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3612] <... futex resumed>) = 0 [pid 3613] 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 [pid 3612] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3613] <... ioctl resumed>) = 0 [pid 3613] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3612] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] <... futex resumed>) = 0 [pid 3612] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3613] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3612] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3612] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] <... openat resumed>) = 4 [pid 3613] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3612] <... futex resumed>) = 0 [pid 3613] socketpair(AF_UNIX, SOCK_STREAM, 0, [pid 3612] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3613] <... socketpair resumed>[5, 6]) = 0 [pid 3612] <... futex resumed>) = 0 [pid 3613] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3612] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] <... futex resumed>) = 0 [pid 3612] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3613] ioctl(4, NBD_SET_SOCK, 5 [pid 3612] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3612] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] <... ioctl resumed>) = 0 [pid 3613] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3612] <... futex resumed>) = 0 [pid 3613] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3612] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3613] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3612] <... futex resumed>) = 0 [pid 3613] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3612] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] <... openat resumed>) = 7 [pid 3613] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3612] <... futex resumed>) = 0 [pid 3613] ioctl(4, NBD_SET_SOCK, 5 [pid 3612] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3612] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] <... ioctl resumed>) = 0 [pid 3613] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3612] <... futex resumed>) = 0 [pid 3613] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3612] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3613] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3612] <... futex resumed>) = 0 [pid 3613] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3612] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] <... openat resumed>) = 8 [pid 3613] write(8, "13", 2) = 2 [pid 3613] ioctl(7, NBD_DO_IT [pid 3612] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 50.698970][ T3613] Increasing nr_hw_queues to 2 fails, fallback to 1 [pid 3612] exit_group(0) = ? [pid 3613] <... ioctl resumed>) = ? [pid 3613] +++ exited with 0 +++ [pid 3612] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3612, si_uid=0, si_status=0, si_utime=0, si_stime=6} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564fd5d0) = 3617 ./strace-static-x86_64: Process 3617 attached [pid 3617] set_robust_list(0x5555564fd5e0, 24) = 0 [pid 3617] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3617] setpgid(0, 0) = 0 [pid 3617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3617] write(3, "1000", 4) = 4 [pid 3617] close(3) = 0 [pid 3617] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3617] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1c14c9c000 [pid 3617] mprotect(0x7f1c14c9d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3617] clone(child_stack=0x7f1c14cbc3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3618], tls=0x7f1c14cbc700, child_tidptr=0x7f1c14cbc9d0) = 3618 [pid 3617] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3617] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3618 attached [pid 3618] set_robust_list(0x7f1c14cbc9e0, 24) = 0 [pid 3618] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3618] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3617] <... futex resumed>) = 0 [pid 3617] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3617] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3618] <... futex resumed>) = 1 [pid 3618] 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 3618] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3617] <... futex resumed>) = 0 [pid 3617] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3617] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3618] <... futex resumed>) = 1 [pid 3618] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4 [pid 3618] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3617] <... futex resumed>) = 0 [pid 3617] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3617] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3618] <... futex resumed>) = 1 [pid 3618] socketpair(AF_UNIX, SOCK_STREAM, 0, [5, 6]) = 0 [pid 3618] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3617] <... futex resumed>) = 0 [pid 3617] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3617] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3618] <... futex resumed>) = 1 [ 50.850322][ T3613] block nbd0: shutting down sockets [pid 3618] ioctl(4, NBD_SET_SOCK, 5) = 0 [pid 3618] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3617] <... futex resumed>) = 0 [pid 3618] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3617] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3618] <... openat resumed>) = 7 [pid 3617] <... futex resumed>) = 0 [pid 3618] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3617] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3618] <... futex resumed>) = 0 [pid 3617] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3618] ioctl(4, NBD_SET_SOCK, 5 [pid 3617] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3617] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3618] <... ioctl resumed>) = 0 [pid 3618] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3617] <... futex resumed>) = 0 [pid 3618] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3617] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3618] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3617] <... futex resumed>) = 0 [pid 3618] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3617] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3618] <... openat resumed>) = 8 [pid 3618] write(8, "13", 2) = 2 [pid 3618] ioctl(7, NBD_DO_IT [pid 3617] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3617] exit_group(0) = ? [pid 3618] <... ioctl resumed>) = ? [pid 3618] +++ exited with 0 +++ [pid 3617] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3617, 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=0x5555564fd5d0) = 3619 ./strace-static-x86_64: Process 3619 attached [pid 3619] set_robust_list(0x5555564fd5e0, 24) = 0 [pid 3619] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3619] setpgid(0, 0) = 0 [pid 3619] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3619] write(3, "1000", 4) = 4 [pid 3619] close(3) = 0 [pid 3619] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3619] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1c14c9c000 [pid 3619] mprotect(0x7f1c14c9d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3619] clone(child_stack=0x7f1c14cbc3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3620], tls=0x7f1c14cbc700, child_tidptr=0x7f1c14cbc9d0) = 3620 ./strace-static-x86_64: Process 3620 attached [pid 3620] set_robust_list(0x7f1c14cbc9e0, 24) = 0 [pid 3620] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3619] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3620] <... futex resumed>) = 0 [pid 3620] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3620] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3620] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3619] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3619] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3620] <... futex resumed>) = 0 [pid 3620] 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(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3620] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3619] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3619] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3620] <... futex resumed>) = 0 [pid 3619] <... futex resumed>) = 1 [pid 3620] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4 [pid 3620] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 51.177665][ T3618] block nbd0: shutting down sockets [pid 3620] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3619] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3619] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3620] <... futex resumed>) = 0 [pid 3620] socketpair(AF_UNIX, SOCK_STREAM, 0, [5, 6]) = 0 [pid 3620] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3620] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3619] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3619] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3619] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3620] <... futex resumed>) = 0 [pid 3620] ioctl(4, NBD_SET_SOCK, 5) = 0 [pid 3620] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3619] <... futex resumed>) = 0 [pid 3620] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3619] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3620] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3619] <... futex resumed>) = 0 [pid 3619] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3620] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 7 [pid 3620] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3619] <... futex resumed>) = 0 [pid 3620] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3619] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3620] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3619] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3620] ioctl(4, NBD_SET_SOCK, 5) = 0 [pid 3620] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3619] <... futex resumed>) = 0 [pid 3620] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3619] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3619] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3620] <... openat resumed>) = 8 [pid 3620] write(8, "13", 2) = 2 [pid 3620] ioctl(7, NBD_DO_IT [pid 3619] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3619] exit_group(0) = ? [pid 3620] <... ioctl resumed>) = ? [pid 3620] +++ exited with 0 +++ [pid 3619] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3619, si_uid=0, si_status=0, si_utime=1, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3621 attached , child_tidptr=0x5555564fd5d0) = 3621 [pid 3621] set_robust_list(0x5555564fd5e0, 24) = 0 [pid 3621] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3621] setpgid(0, 0) = 0 [pid 3621] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3621] write(3, "1000", 4) = 4 [pid 3621] close(3) = 0 [pid 3621] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3621] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1c14c9c000 [pid 3621] mprotect(0x7f1c14c9d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3621] clone(child_stack=0x7f1c14cbc3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3622], tls=0x7f1c14cbc700, child_tidptr=0x7f1c14cbc9d0) = 3622 [pid 3621] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3621] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3622 attached [pid 3622] set_robust_list(0x7f1c14cbc9e0, 24) = 0 [pid 3622] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3622] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3621] <... futex resumed>) = 0 [pid 3621] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3621] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3622] <... futex resumed>) = 1 [pid 3622] 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 3622] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3621] <... futex resumed>) = 0 [pid 3621] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3621] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3622] <... futex resumed>) = 1 [pid 3622] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4 [pid 3622] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3621] <... futex resumed>) = 0 [pid 3621] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3621] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3622] <... futex resumed>) = 1 [pid 3622] socketpair(AF_UNIX, SOCK_STREAM, 0, [5, 6]) = 0 [pid 3622] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3621] <... futex resumed>) = 0 [pid 3621] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3621] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3622] <... futex resumed>) = 1 [ 51.527368][ T3620] block nbd0: shutting down sockets [pid 3622] ioctl(4, NBD_SET_SOCK, 5) = 0 [pid 3622] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3621] <... futex resumed>) = 0 [pid 3622] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3621] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3622] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3621] <... futex resumed>) = 0 [pid 3622] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3621] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3622] <... openat resumed>) = 7 [pid 3622] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3621] <... futex resumed>) = 0 [pid 3622] <... futex resumed>) = 1 [pid 3621] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3622] ioctl(4, NBD_SET_SOCK, 5 [pid 3621] <... futex resumed>) = 0 [pid 3621] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3622] <... ioctl resumed>) = 0 [pid 3622] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3621] <... futex resumed>) = 0 [pid 3622] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3621] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3622] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3622] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3621] <... futex resumed>) = 0 [pid 3622] <... openat resumed>) = 8 [pid 3621] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3622] write(8, "13", 2) = 2 [pid 3622] ioctl(7, NBD_DO_IT [pid 3621] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 51.641381][ T3622] debugfs: out of free dentries, can not create file 'size_bytes' [pid 3621] exit_group(0) = ? [pid 3622] <... ioctl resumed>) = ? [pid 3622] +++ exited with 0 +++ [pid 3621] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3621, si_uid=0, si_status=0, si_utime=0, si_stime=4} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3623 attached , child_tidptr=0x5555564fd5d0) = 3623 [pid 3623] set_robust_list(0x5555564fd5e0, 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 [pid 3623] close(3) = 0 [pid 3623] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 51.850172][ T3622] block nbd0: shutting down sockets [pid 3623] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1c14c9c000 [pid 3623] mprotect(0x7f1c14c9d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3623] clone(child_stack=0x7f1c14cbc3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3624], tls=0x7f1c14cbc700, child_tidptr=0x7f1c14cbc9d0) = 3624 [pid 3623] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3623] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3624 attached [pid 3624] set_robust_list(0x7f1c14cbc9e0, 24) = 0 [pid 3624] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3624] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3623] <... futex resumed>) = 0 [pid 3624] <... futex resumed>) = 1 [pid 3623] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [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 [pid 3623] <... futex resumed>) = 0 [pid 3623] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3624] <... ioctl resumed>) = 0 [pid 3624] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3623] <... futex resumed>) = 0 [pid 3624] <... futex resumed>) = 1 [pid 3623] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3624] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3623] <... futex resumed>) = 0 [pid 3623] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3624] <... openat resumed>) = 4 [pid 3624] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3623] <... futex resumed>) = 0 [pid 3624] <... futex resumed>) = 1 [pid 3623] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3624] socketpair(AF_UNIX, SOCK_STREAM, 0, [pid 3623] <... futex resumed>) = 0 [pid 3623] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3624] <... socketpair resumed>[5, 6]) = 0 [pid 3624] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3623] <... futex resumed>) = 0 [pid 3624] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3623] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3624] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3623] <... futex resumed>) = 0 [pid 3624] ioctl(4, NBD_SET_SOCK, 5 [pid 3623] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3624] <... ioctl resumed>) = 0 [pid 3624] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3623] <... futex resumed>) = 0 [pid 3624] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3623] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3624] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3623] <... futex resumed>) = 0 [pid 3624] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3623] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3624] <... openat resumed>) = 7 [pid 3624] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3623] <... futex resumed>) = 0 [pid 3624] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3623] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3624] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3623] <... futex resumed>) = 0 [pid 3624] ioctl(4, NBD_SET_SOCK, 5 [pid 3623] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3624] <... ioctl resumed>) = 0 [pid 3624] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3623] <... futex resumed>) = 0 [pid 3623] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3623] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3624] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 8 [pid 3624] write(8, "13", 2) = 2 [pid 3624] ioctl(7, NBD_DO_IT [pid 3623] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3623] exit_group(0) = ? [pid 3624] <... ioctl 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=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564fd5d0) = 3625 ./strace-static-x86_64: Process 3625 attached [pid 3625] set_robust_list(0x5555564fd5e0, 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(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3625] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1c14c9c000 [pid 3625] mprotect(0x7f1c14c9d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3625] clone(child_stack=0x7f1c14cbc3f0, 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=0x7f1c14cbc700, child_tidptr=0x7f1c14cbc9d0) = 3626 ./strace-static-x86_64: Process 3626 attached [pid 3626] set_robust_list(0x7f1c14cbc9e0, 24) = 0 [pid 3626] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [ 52.175696][ T3624] block nbd0: shutting down sockets [pid 3625] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3626] <... futex resumed>) = 0 [pid 3625] <... futex resumed>) = 1 [pid 3626] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3626] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3625] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3626] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3625] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3625] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3626] <... futex resumed>) = 0 [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 [pid 3625] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3626] <... ioctl resumed>) = 0 [pid 3626] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3625] <... futex resumed>) = 0 [pid 3626] <... futex resumed>) = 1 [pid 3625] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3626] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3625] <... futex resumed>) = 0 [pid 3625] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3626] <... openat resumed>) = 4 [pid 3626] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3625] <... futex resumed>) = 0 [pid 3626] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3625] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3626] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3625] <... futex resumed>) = 0 [pid 3626] socketpair(AF_UNIX, SOCK_STREAM, 0, [pid 3625] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3626] <... socketpair resumed>[5, 6]) = 0 [pid 3626] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3625] <... futex resumed>) = 0 [pid 3626] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3625] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3626] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3625] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3626] ioctl(4, NBD_SET_SOCK, 5) = 0 [pid 3626] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3625] <... futex resumed>) = 0 [pid 3626] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 3625] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3626] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 7 [pid 3625] <... futex resumed>) = 0 [pid 3626] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3625] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3626] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3625] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3625] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3626] <... futex resumed>) = 0 [pid 3625] <... futex resumed>) = 1 [pid 3626] ioctl(4, NBD_SET_SOCK, 5 [pid 3625] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3626] <... ioctl resumed>) = 0 [pid 3626] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3625] <... futex resumed>) = 0 [pid 3626] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3625] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [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 [pid 3625] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3626] <... openat resumed>) = 8 [pid 3626] write(8, "13", 2) = 2 [pid 3626] ioctl(7, NBD_DO_IT [pid 3625] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 52.318563][ T3626] debugfs: out of free dentries, can not create file 'size_bytes' [pid 3625] exit_group(0 [pid 3626] <... ioctl resumed>) = ? [pid 3625] <... exit_group 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=2} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564fd5d0) = 3627 ./strace-static-x86_64: Process 3627 attached [pid 3627] set_robust_list(0x5555564fd5e0, 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(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3627] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1c14c9c000 [pid 3627] mprotect(0x7f1c14c9d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3627] clone(child_stack=0x7f1c14cbc3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3628], tls=0x7f1c14cbc700, child_tidptr=0x7f1c14cbc9d0) = 3628 [pid 3627] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3627] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3628 attached [pid 3628] set_robust_list(0x7f1c14cbc9e0, 24) = 0 [pid 3628] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3628] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3627] <... futex resumed>) = 0 [pid 3627] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3627] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] <... 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(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3627] <... futex resumed>) = 0 [pid 3627] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3627] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] <... futex resumed>) = 1 [pid 3628] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4 [pid 3628] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3627] <... futex resumed>) = 0 [pid 3627] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3627] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] <... futex resumed>) = 1 [pid 3628] socketpair(AF_UNIX, SOCK_STREAM, 0, [5, 6]) = 0 [pid 3628] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3627] <... futex resumed>) = 0 [pid 3627] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3627] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] <... futex resumed>) = 1 [ 52.505102][ T3626] block nbd0: shutting down sockets [pid 3628] ioctl(4, NBD_SET_SOCK, 5) = 0 [pid 3628] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3627] <... futex resumed>) = 0 [pid 3628] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3627] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3628] <... openat resumed>) = 7 [pid 3627] <... futex resumed>) = 0 [pid 3628] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3627] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] <... futex resumed>) = 0 [pid 3627] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3628] ioctl(4, NBD_SET_SOCK, 5 [pid 3627] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3627] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] <... ioctl resumed>) = 0 [pid 3628] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3627] <... futex resumed>) = 0 [pid 3628] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3627] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3628] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3627] <... futex resumed>) = 0 [pid 3628] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3627] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] <... openat resumed>) = 8 [pid 3628] write(8, "13", 2) = 2 [pid 3628] ioctl(7, NBD_DO_IT [pid 3627] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3627] exit_group(0 [pid 3628] <... ioctl resumed>) = ? [pid 3627] <... exit_group 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=0, si_stime=2} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564fd5d0) = 3629 ./strace-static-x86_64: Process 3629 attached [pid 3629] set_robust_list(0x5555564fd5e0, 24) = 0 [pid 3629] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [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(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3629] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1c14c9c000 [pid 3629] mprotect(0x7f1c14c9d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3629] clone(child_stack=0x7f1c14cbc3f0, 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=0x7f1c14cbc700, child_tidptr=0x7f1c14cbc9d0) = 3630 [pid 3630] set_robust_list(0x7f1c14cbc9e0, 24) = 0 [pid 3630] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [ 52.825484][ T3628] block nbd0: shutting down sockets [pid 3629] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3630] <... futex resumed>) = 0 [pid 3630] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3630] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3630] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3629] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3629] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3630] <... futex resumed>) = 0 [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(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3630] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3629] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3629] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3630] <... futex resumed>) = 0 [pid 3629] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3630] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4 [pid 3630] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3629] <... futex resumed>) = 0 [pid 3630] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3629] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3630] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3629] <... futex resumed>) = 0 [pid 3630] socketpair(AF_UNIX, SOCK_STREAM, 0, [pid 3629] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3630] <... socketpair resumed>[5, 6]) = 0 [pid 3630] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3629] <... futex resumed>) = 0 [pid 3630] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3629] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3630] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3629] <... futex resumed>) = 0 [pid 3630] ioctl(4, NBD_SET_SOCK, 5 [pid 3629] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3630] <... ioctl resumed>) = 0 [pid 3630] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3629] <... futex resumed>) = 0 [pid 3629] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3630] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3629] <... futex resumed>) = 0 [pid 3630] <... openat resumed>) = 7 [pid 3629] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3630] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3629] <... futex resumed>) = 0 [pid 3630] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3629] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3630] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3629] <... futex resumed>) = 0 [pid 3630] ioctl(4, NBD_SET_SOCK, 5 [pid 3629] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3630] <... ioctl resumed>) = 0 [pid 3630] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3629] <... futex resumed>) = 0 [pid 3630] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3629] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3630] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3629] <... futex resumed>) = 0 [pid 3630] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3629] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3630] <... openat resumed>) = 8 [pid 3630] write(8, "13", 2) = 2 [pid 3630] ioctl(7, NBD_DO_IT [pid 3629] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3629] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [ 52.956227][ T3630] debugfs: out of free dentries, can not create file 'size_bytes' [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=4} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564fd5d0) = 3631 ./strace-static-x86_64: Process 3631 attached [pid 3631] set_robust_list(0x5555564fd5e0, 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(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3631] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1c14c9c000 [pid 3631] mprotect(0x7f1c14c9d000, 131072, PROT_READ|PROT_WRITE) = 0 [ 53.162531][ T3630] block nbd0: shutting down sockets [pid 3631] clone(child_stack=0x7f1c14cbc3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3632], tls=0x7f1c14cbc700, child_tidptr=0x7f1c14cbc9d0) = 3632 ./strace-static-x86_64: Process 3632 attached [pid 3631] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3631] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3632] set_robust_list(0x7f1c14cbc9e0, 24) = 0 [pid 3632] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3632] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3631] <... futex resumed>) = 0 [pid 3632] <... futex resumed>) = 1 [pid 3631] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [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 [pid 3631] <... futex resumed>) = 0 [pid 3632] <... ioctl resumed>) = 0 [pid 3631] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3632] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3631] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3632] <... futex resumed>) = 0 [pid 3631] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3632] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3631] <... futex resumed>) = 0 [pid 3631] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3632] <... openat resumed>) = 4 [pid 3632] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3631] <... futex resumed>) = 0 [pid 3632] <... futex resumed>) = 1 [pid 3631] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3632] socketpair(AF_UNIX, SOCK_STREAM, 0, [pid 3631] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3632] <... socketpair resumed>[5, 6]) = 0 [pid 3632] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3631] <... futex resumed>) = 0 [pid 3631] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3632] ioctl(4, NBD_SET_SOCK, 5 [pid 3631] <... futex resumed>) = 0 [pid 3631] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 3631] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0} [pid 3632] <... ioctl resumed>) = 0 [pid 3631] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3631] futex(0x7f1c14d934fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3631] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1c14c7b000 [pid 3631] mprotect(0x7f1c14c7c000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3631] clone(child_stack=0x7f1c14c9b3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3633], tls=0x7f1c14c9b700, child_tidptr=0x7f1c14c9b9d0) = 3633 [pid 3631] futex(0x7f1c14d934f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3631] futex(0x7f1c14d934fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3633 attached [pid 3633] set_robust_list(0x7f1c14c9b9e0, 24) = 0 [pid 3633] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 7 [pid 3633] futex(0x7f1c14d934fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3631] <... futex resumed>) = 0 [pid 3631] futex(0x7f1c14d934f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3631] futex(0x7f1c14d934fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3633] <... futex resumed>) = 1 [pid 3633] ioctl(4, NBD_SET_SOCK, 5 [pid 3632] futex(0x7f1c14d934ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3632] futex(0x7f1c14d934e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3633] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 3633] futex(0x7f1c14d934fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3631] <... futex resumed>) = 0 [pid 3631] futex(0x7f1c14d934e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3631] futex(0x7f1c14d934ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3632] <... futex resumed>) = 0 [pid 3633] <... futex resumed>) = 1 [pid 3632] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3633] futex(0x7f1c14d934f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3632] <... openat resumed>) = 8 [pid 3632] write(8, "13", 2) = 2 [ 53.303255][ T3633] block nbd0: Device being setup by another task [ 53.353503][ T3632] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 53.365253][ T3632] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 53.373663][ T3632] CPU: 0 PID: 3632 Comm: syz-executor426 Not tainted 6.0.0-rc4-syzkaller-00302-gb96fbd602d35 #0 [ 53.384078][ T3632] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 53.394151][ T3632] RIP: 0010:blk_mq_free_rqs+0x3ef/0x830 [ 53.399769][ T3632] Code: 89 de e8 f4 b3 6d fd 83 fb 3f 48 89 6c 24 18 0f 87 2e 02 00 00 e8 c1 af 6d fd bb 00 10 00 00 44 89 e1 48 d3 e3 48 8b 44 24 28 <42> 8a 04 30 84 c0 0f 85 ed 01 00 00 48 8b 04 24 8b 28 31 ff 89 ee [ 53.419383][ T3632] RSP: 0018:ffffc9000391f9e0 EFLAGS: 00010206 [ 53.425475][ T3632] RAX: 0000000000000000 RBX: 0000000000010000 RCX: 0000000000000004 [ 53.433468][ T3632] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000040 [ 53.441456][ T3632] RBP: ffffea0001cc3008 R08: ffffffff841be82c R09: fffffbfff1c4b476 [ 53.449465][ T3632] R10: fffffbfff1c4b476 R11: 1ffffffff1c4b475 R12: 0000000000000004 [ 53.457452][ T3632] R13: 1ffff110040bf492 R14: dffffc0000000000 R15: 0000000000000080 [ 53.465458][ T3632] FS: 00007f1c14cbc700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 53.474391][ T3632] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.480976][ T3632] CR2: 00007f1c14c9aec8 CR3: 000000001c7c3000 CR4: 00000000003506f0 [ 53.488971][ T3632] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.496938][ T3632] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.504905][ T3632] Call Trace: [ 53.508191][ T3632] [ 53.511129][ T3632] blk_mq_sched_free_rqs+0x1b0/0x2a0 [ 53.516425][ T3632] ? kernfs_put+0x481/0x490 [ 53.520937][ T3632] ? blk_mq_init_sched+0x8e0/0x8e0 [ 53.526065][ T3632] ? __kobject_del+0x1e0/0x300 [ 53.530841][ T3632] elevator_switch_mq+0x1db/0x6d0 [ 53.535867][ T3632] blk_mq_update_nr_hw_queues+0x5c8/0x12d0 [ 53.541720][ T3632] ? blk_mq_update_nr_requests+0x500/0x500 [ 53.547552][ T3632] ? blkdev_common_ioctl+0x6a2/0x2350 [ 53.552921][ T3632] ? mutex_lock_io_nested+0x60/0x60 [ 53.558188][ T3632] nbd_start_device+0x15d/0xb70 [ 53.563088][ T3632] ? bpf_lsm_capable+0x5/0x10 [ 53.567786][ T3632] ? security_capable+0xb1/0xd0 [ 53.572672][ T3632] nbd_ioctl+0x3b3/0xa40 [ 53.576957][ T3632] ? nbd_release+0x130/0x130 [ 53.581598][ T3632] ? memset+0x1f/0x40 [ 53.585607][ T3632] ? smack_file_ioctl+0x298/0x3a0 [ 53.590689][ T3632] ? smack_file_alloc_security+0xd0/0xd0 [ 53.596337][ T3632] ? nbd_release+0x130/0x130 [ 53.600919][ T3632] blkdev_ioctl+0x3a6/0x760 [ 53.605443][ T3632] ? blkdev_compat_ptr_ioctl+0xd0/0xd0 [ 53.610946][ T3632] ? bpf_lsm_file_ioctl+0x5/0x10 [ 53.615895][ T3632] ? security_file_ioctl+0x9d/0xb0 [ 53.621011][ T3632] ? blkdev_compat_ptr_ioctl+0xd0/0xd0 [ 53.626462][ T3632] __se_sys_ioctl+0xfb/0x170 [ 53.631079][ T3632] do_syscall_64+0x2b/0x70 [ 53.635507][ T3632] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 53.641425][ T3632] RIP: 0033:0x7f1c14d0f319 [ 53.645862][ T3632] 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 [ 53.665487][ T3632] RSP: 002b:00007f1c14cbc2e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 53.673930][ T3632] RAX: ffffffffffffffda RBX: 00007f1c14d934e0 RCX: 00007f1c14d0f319 [ 53.681911][ T3632] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 53.689878][ T3632] RBP: 00007f1c14d60194 R08: 0000000000000002 R09: 0000000000003331 [pid 3632] ioctl(7, NBD_DO_IT [pid 3631] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 53.697864][ T3632] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1c14d934ec [ 53.705854][ T3632] R13: 00007f1c14cbc2f0 R14: 00007f1c14d934e8 R15: 0000000000000002 [ 53.713849][ T3632] [ 53.716890][ T3632] Modules linked in: [ 53.723223][ T3632] ---[ end trace 0000000000000000 ]--- [ 53.728755][ T3632] RIP: 0010:blk_mq_free_rqs+0x3ef/0x830 [ 53.734606][ T3632] Code: 89 de e8 f4 b3 6d fd 83 fb 3f 48 89 6c 24 18 0f 87 2e 02 00 00 e8 c1 af 6d fd bb 00 10 00 00 44 89 e1 48 d3 e3 48 8b 44 24 28 <42> 8a 04 30 84 c0 0f 85 ed 01 00 00 48 8b 04 24 8b 28 31 ff 89 ee [ 53.754750][ T3632] RSP: 0018:ffffc9000391f9e0 EFLAGS: 00010206 [ 53.761060][ T3632] RAX: 0000000000000000 RBX: 0000000000010000 RCX: 0000000000000004 [ 53.769360][ T3632] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000040 [ 53.777606][ T3632] RBP: ffffea0001cc3008 R08: ffffffff841be82c R09: fffffbfff1c4b476 [ 53.785814][ T3632] R10: fffffbfff1c4b476 R11: 1ffffffff1c4b475 R12: 0000000000000004 [ 53.793982][ T3632] R13: 1ffff110040bf492 R14: dffffc0000000000 R15: 0000000000000080 [ 53.801973][ T3632] FS: 00007f1c14cbc700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 53.811133][ T3632] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.817885][ T3632] CR2: 00007f1c14d504c0 CR3: 000000001c7c3000 CR4: 00000000003506f0 [ 53.826168][ T3632] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.834324][ T3632] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.842329][ T3632] Kernel panic - not syncing: Fatal exception [ 53.848582][ T3632] Kernel Offset: disabled [ 53.852910][ T3632] Rebooting in 86400 seconds..