ci-upstream-kasan-gce-smack-root/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci-upstream-kasan-gce-smack-root/syz-executor4065381779 <...> Warning: Permanently added '10.128.0.10' (ED25519) to the list of known hosts. execve("ci-upstream-kasan-gce-smack-root/syz-executor4065381779", ["ci-upstream-kasan-gce-smack-root/syz-executor4065381779"], 0x7ffe93d7f710 /* 10 vars */) = 0 brk(NULL) = 0x55556296f000 brk(0x55556296fe40) = 0x55556296fe40 arch_prctl(ARCH_SET_FS, 0x55556296f4c0) = 0 set_tid_address(0x55556296f790) = 5607 set_robust_list(0x55556296f7a0, 24) = 0 rseq({cpu_id_start=0, cpu_id=RSEQ_CPU_ID_UNINITIALIZED, rseq_cs=NULL, flags=0, node_id=0, mm_cid=0, slice_ctrl={request=0, granted=0, __reserved=0}, __reserved=0}, 33, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlinkat(AT_FDCWD, "/proc/self/exe", "/root/ci-upstream-kasan-gce-smack-root/syz-executor4065381779", 4096) = 61 getrandom("\xc6\xb3\xf5\xdf\x3c\x6a\x01\xb0", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556296fe40 brk(0x555562990e40) = 0x555562990e40 brk(0x555562991000) = 0x555562991000 mprotect(0x7f4b1185c000, 20480, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f4b117b79f0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f4b117ba920}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f4b117b79f0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f4b117ba920}, NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5608 attached , child_tidptr=0x55556296f790) = 5608 [pid 5607] rt_sigprocmask(SIG_SETMASK, [] [pid 5608] set_robust_list(0x55556296f7a0, 24 [pid 5607] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5608] <... set_robust_list resumed>) = 0 [pid 5607] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5608] rt_sigprocmask(SIG_SETMASK, [] [pid 5607] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5608] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5609 attached [pid 5608] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5609] set_robust_list(0x55556296f7a0, 24) = 0 [pid 5607] <... clone resumed>, child_tidptr=0x55556296f790) = 5609 [pid 5608] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5607] rt_sigprocmask(SIG_SETMASK, [] [pid 5609] rt_sigprocmask(SIG_SETMASK, [] [pid 5608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5607] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5609] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5610 attached [pid 5607] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5609] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5610] set_robust_list(0x55556296f7a0, 24 [pid 5609] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5610] <... set_robust_list resumed>) = 0 [pid 5609] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5607] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5611 attached [pid 5610] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5611] set_robust_list(0x55556296f7a0, 24 [pid 5610] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5609] <... clone resumed>, child_tidptr=0x55556296f790) = 5611 [pid 5611] <... set_robust_list resumed>) = 0 [pid 5610] <... prctl resumed>) = 0 ci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5612 attached [pid 5611] rt_sigprocmask(SIG_SETMASK, [] [pid 5610] setpgid(0, 0 [pid 5609] rt_sigprocmask(SIG_SETMASK, [] [pid 5608] <... clone resumed>, child_tidptr=0x55556296f790) = 5610 [pid 5607] <... clone resumed>, child_tidptr=0x55556296f790) = 5612 [pid 5612] set_robust_list(0x55556296f7a0, 24 [pid 5611] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5610] <... setpgid resumed>) = 0 [pid 5609] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5612] <... set_robust_list resumed>) = 0 [pid 5611] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5607] rt_sigprocmask(SIG_SETMASK, [] [pid 5610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5608] rt_sigprocmask(SIG_SETMASK, [] [pid 5607] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5612] rt_sigprocmask(SIG_SETMASK, [] [pid 5611] <... prctl resumed>) = 0 [pid 5612] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5611] setpgid(0, 0 [pid 5610] <... openat resumed>) = 3 [pid 5611] <... setpgid resumed>) = 0 [pid 5610] write(3, "1000", 4 [pid 5607] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5612] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5611] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5610] <... write resumed>) = 4 [pid 5608] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5607] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5612] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5610] close(3 [pid 5607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5612] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5611] <... openat resumed>) = 3 [pid 5610] <... close resumed>) = 0 ci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5613 attached [pid 5607] <... clone resumed>, child_tidptr=0x55556296f790) = 5613 [pid 5613] set_robust_list(0x55556296f7a0, 24 [pid 5611] write(3, "1000", 4 [pid 5610] write(1, "executing program\n", 18ci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5614 attached executing program [pid 5607] rt_sigprocmask(SIG_SETMASK, [] [pid 5613] <... set_robust_list resumed>) = 0 [pid 5612] <... clone resumed>, child_tidptr=0x55556296f790) = 5614 [pid 5611] <... write resumed>) = 4 [pid 5610] <... write resumed>) = 18 [pid 5607] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5614] set_robust_list(0x55556296f7a0, 24 [pid 5613] rt_sigprocmask(SIG_SETMASK, [] [pid 5612] rt_sigprocmask(SIG_SETMASK, [] [pid 5611] close(3 [pid 5610] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC [pid 5607] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5614] <... set_robust_list resumed>) = 0 [pid 5613] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5612] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5611] <... close resumed>) = 0 [pid 5607] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5614] rt_sigprocmask(SIG_SETMASK, [] [pid 5613] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5611] write(1, "executing program\n", 18 [pid 5610] <... openat resumed>) = 3 executing program [pid 5607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5614] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5613] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5611] <... write resumed>) = 18 [pid 5610] dup(3ci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5615 attached [pid 5614] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5613] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5611] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC [pid 5610] <... dup resumed>) = 4 [pid 5614] <... prctl resumed>) = 0 [pid 5615] set_robust_list(0x55556296f7a0, 24 [pid 5610] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5611] <... openat resumed>) = 3 [pid 5607] <... clone resumed>, child_tidptr=0x55556296f790) = 5615 [pid 5607] rt_sigprocmask(SIG_SETMASK, [] [pid 5615] <... set_robust_list resumed>) = 0 [pid 5614] setpgid(0, 0 [pid 5611] dup(3 [pid 5607] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5611] <... dup resumed>) = 4 [pid 5615] rt_sigprocmask(SIG_SETMASK, [] [pid 5614] <... setpgid resumed>) = 0 ci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5616 attached [pid 5615] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5611] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5616] set_robust_list(0x55556296f7a0, 24 [pid 5613] <... clone resumed>, child_tidptr=0x55556296f790) = 5616 [pid 5616] <... set_robust_list resumed>) = 0 [pid 5615] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5614] <... openat resumed>) = 3 [pid 5613] rt_sigprocmask(SIG_SETMASK, [] [pid 5616] rt_sigprocmask(SIG_SETMASK, [] [pid 5615] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5614] write(3, "1000", 4 [pid 5613] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5616] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5615] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5614] <... write resumed>) = 4 [pid 5616] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5614] close(3 [pid 5616] <... prctl resumed>) = 0 [pid 5614] <... close resumed>) = 0 [pid 5616] setpgid(0, 0 [pid 5614] write(1, "executing program\n", 18 [pid 5616] <... setpgid resumed>) = 0 ci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5617 attached executing program [pid 5616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5614] <... write resumed>) = 18 [pid 5617] set_robust_list(0x55556296f7a0, 24 [pid 5616] <... openat resumed>) = 3 [pid 5615] <... clone resumed>, child_tidptr=0x55556296f790) = 5617 [pid 5614] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC [pid 5617] <... set_robust_list resumed>) = 0 [pid 5617] rt_sigprocmask(SIG_SETMASK, [] [pid 5616] write(3, "1000", 4 [pid 5615] rt_sigprocmask(SIG_SETMASK, [] [pid 5614] <... openat resumed>) = 3 [pid 5617] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5616] <... write resumed>) = 4 [pid 5615] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5614] dup(3 [pid 5617] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5616] close(3 [pid 5614] <... dup resumed>) = 4 [pid 5617] <... prctl resumed>) = 0 [pid 5616] <... close resumed>) = 0 [pid 5614] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5617] setpgid(0, 0 executing program [pid 5616] write(1, "executing program\n", 18 [pid 5617] <... setpgid resumed>) = 0 [pid 5616] <... write resumed>) = 18 [pid 5617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5616] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC) = 3 [pid 5616] dup(3) = 4 [pid 5616] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5617] write(3, "1000", 4) = 4 [pid 5617] close(3) = 0 executing program [pid 5617] write(1, "executing program\n", 18) = 18 [pid 5617] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC) = 3 [pid 5617] dup(3) = 4 [pid 5617] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5609] kill(-5611, SIGKILL [pid 5608] kill(-5610, SIGKILL [pid 5609] <... kill resumed>) = 0 [pid 5608] <... kill resumed>) = 0 [pid 5609] kill(5611, SIGKILL [pid 5608] kill(5610, SIGKILL [pid 5609] <... kill resumed>) = 0 [pid 5608] <... kill resumed>) = 0 [pid 5612] kill(-5614, SIGKILL) = 0 [pid 5612] kill(5614, SIGKILL) = 0 [pid 5613] kill(-5616, SIGKILL) = 0 [pid 5613] kill(5616, SIGKILL) = 0 [pid 5615] kill(-5617, SIGKILL) = 0 [pid 5615] kill(5617, SIGKILL) = 0 [pid 5609] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5609] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5609] getdents64(3, 0x555562970860 /* 2 entries */, 32768) = 48 [pid 5609] getdents64(3, 0x555562970860 /* 0 entries */, 32768) = 0 [pid 5609] close(3) = 0 [pid 5608] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5608] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5608] getdents64(3 [pid 5612] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5608] <... getdents64 resumed>, 0x555562970860 /* 2 entries */, 32768) = 48 [pid 5612] <... openat resumed>) = 3 [pid 5608] getdents64(3 [pid 5612] fstat(3 [pid 5608] <... getdents64 resumed>, 0x555562970860 /* 0 entries */, 32768) = 0 [pid 5612] <... fstat resumed>, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5608] close(3 [pid 5612] getdents64(3 [pid 5608] <... close resumed>) = 0 [pid 5612] <... getdents64 resumed>, 0x555562970860 /* 2 entries */, 32768) = 48 [pid 5612] getdents64(3, 0x555562970860 /* 0 entries */, 32768) = 0 [pid 5612] close(3) = 0 [pid 5613] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5613] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5613] getdents64(3, 0x555562970860 /* 2 entries */, 32768) = 48 [pid 5613] getdents64(3, 0x555562970860 /* 0 entries */, 32768) = 0 [pid 5613] close(3) = 0 [pid 5615] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5615] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5615] getdents64(3, 0x555562970860 /* 2 entries */, 32768) = 48 [pid 5615] getdents64(3, 0x555562970860 /* 0 entries */, 32768) = 0 [pid 5615] close(3) = 0 [pid 5610] <... fallocate resumed>) = ? [pid 5610] +++ killed by SIGKILL +++ [pid 5608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5610, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=7943 /* 79.43 s */} --- [pid 5608] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5638 attached , child_tidptr=0x55556296f790) = 5638 [pid 5638] set_robust_list(0x55556296f7a0, 24 [pid 5608] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] <... set_robust_list resumed>) = 0 [pid 5608] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5638] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5638] setpgid(0, 0) = 0 [pid 5638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5638] write(3, "1000", 4) = 4 [pid 5638] close(3) = 0 [pid 5638] write(1, "executing program\n", 18) = 18 executing program [pid 5638] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC) = 3 [pid 5638] dup(3) = 4 [pid 5638] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5608] kill(-5638, SIGKILL) = 0 [pid 5608] kill(5638, SIGKILL) = 0 [pid 5608] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5608] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5608] getdents64(3, 0x555562970860 /* 2 entries */, 32768) = 48 [pid 5608] getdents64(3, 0x555562970860 /* 0 entries */, 32768) = 0 [pid 5608] close(3) = 0 [ 286.391153][ T38] INFO: task syz-executor406:5614 blocked for more than 143 seconds. [ 286.391186][ T38] Not tainted syzkaller #0 [ 286.391199][ T38] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.391210][ T38] task:syz-executor406 state:D stack:28264 pid:5614 tgid:5614 ppid:5612 task_flags:0x400040 flags:0x00080002 [ 286.391319][ T38] Call Trace: [ 286.391328][ T38] [ 286.391351][ T38] __schedule+0x16d9/0x5700 [ 286.391442][ T38] ? __lock_acquire+0x747/0x2de0 [ 286.391482][ T38] ? __pfx___schedule+0x10/0x10 [ 286.391538][ T38] rt_mutex_schedule+0x76/0xf0 [ 286.391570][ T38] __rt_mutex_slowlock_locked+0x1f88/0x25b0 [ 286.391625][ T38] ? __rt_mutex_slowlock_locked+0x1d6/0x25b0 [ 286.391659][ T38] ? __pfx___rt_mutex_slowlock_locked+0x10/0x10 [ 286.391702][ T38] ? rcu_is_watching+0x16/0xb0 [ 286.391745][ T38] rt_mutex_slowlock+0xbd/0x180 [ 286.391777][ T38] ? __pfx_rt_mutex_slowlock+0x10/0x10 [ 286.391809][ T38] ? lock_acquire+0x115/0x350 [ 286.391845][ T38] rwbase_write_lock+0x14c/0x720 [ 286.391884][ T38] blkdev_fallocate+0x263/0x550 [ 286.391916][ T38] ? fsnotify_file_area_perm+0x12a/0x1e0 [ 286.391952][ T38] vfs_fallocate+0x663/0x7f0 [ 286.391988][ T38] ? __pfx_vfs_fallocate+0x10/0x10 [ 286.392030][ T38] __x64_sys_fallocate+0xbf/0x110 [ 286.392065][ T38] do_syscall_64+0x166/0x520 [ 286.392089][ T38] ? trace_irq_disable+0x3b/0x140 [ 286.392205][ T38] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.392232][ T38] ? clear_bhb_loop+0x70/0xc0 [ 286.392262][ T38] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.392286][ T38] RIP: 0033:0x7f4b117ca679 [ 286.392326][ T38] RSP: 002b:00007fff149f1898 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 286.392352][ T38] RAX: ffffffffffffffda RBX: 00007fff149f18d0 RCX: 00007f4b117ca679 [ 286.392388][ T38] RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000004 [ 286.392403][ T38] RBP: 0000000000000000 R08: 00000000000f4240 R09: 00000000000f4240 [ 286.392452][ T38] R10: 0000002000000400 R11: 0000000000000246 R12: 00000000000f4240 [ 286.392469][ T38] R13: 0000000000000002 R14: 00007fff149f18bc R15: 00007fff149f18c0 [ 286.392514][ T38] [ 286.392526][ T38] INFO: task syz-executor406:5616 blocked for more than 143 seconds. [ 286.392543][ T38] Not tainted syzkaller #0 [ 286.392555][ T38] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.392565][ T38] task:syz-executor406 state:D stack:27640 pid:5616 tgid:5616 ppid:5613 task_flags:0x400040 flags:0x00080002 [ 286.392635][ T38] Call Trace: [ 286.392643][ T38] [ 286.392657][ T38] __schedule+0x16d9/0x5700 [ 286.392727][ T38] ? __pfx___schedule+0x10/0x10 [ 286.392782][ T38] rt_mutex_schedule+0x76/0xf0 [ 286.392818][ T38] __rt_mutex_slowlock_locked+0x1f88/0x25b0 [ 286.392860][ T38] ? __rt_mutex_slowlock_locked+0x1d6/0x25b0 [ 286.392894][ T38] ? __pfx___rt_mutex_slowlock_locked+0x10/0x10 [ 286.392938][ T38] ? rcu_is_watching+0x16/0xb0 [ 286.392981][ T38] rt_mutex_slowlock+0xbd/0x180 [ 286.393014][ T38] ? __pfx_rt_mutex_slowlock+0x10/0x10 [ 286.393047][ T38] ? lock_acquire+0x115/0x350 [ 286.393085][ T38] rwbase_write_lock+0x14c/0x720 [ 286.393124][ T38] blkdev_fallocate+0x263/0x550 [ 286.393156][ T38] ? fsnotify_file_area_perm+0x12a/0x1e0 [ 286.393191][ T38] vfs_fallocate+0x663/0x7f0 [ 286.393229][ T38] ? __pfx_vfs_fallocate+0x10/0x10 [ 286.393271][ T38] __x64_sys_fallocate+0xbf/0x110 [ 286.393304][ T38] do_syscall_64+0x166/0x520 [ 286.393328][ T38] ? trace_irq_disable+0x3b/0x140 [ 286.393359][ T38] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.393382][ T38] ? clear_bhb_loop+0x70/0xc0 [ 286.393412][ T38] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.393435][ T38] RIP: 0033:0x7f4b117ca679 [ 286.393468][ T38] RSP: 002b:00007fff149f1898 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 286.393512][ T38] RAX: ffffffffffffffda RBX: 00007fff149f18d0 RCX: 00007f4b117ca679 [ 286.393530][ T38] RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000004 [ 286.393544][ T38] RBP: 0000000000000000 R08: 00000000000f4240 R09: 00000000000f4240 [ 286.393559][ T38] R10: 0000002000000400 R11: 0000000000000246 R12: 00000000000f4240 [ 286.393574][ T38] R13: 0000000000000002 R14: 00007fff149f18bc R15: 00007fff149f18c0 [ 286.393609][ T38] [ 286.393619][ T38] INFO: task syz-executor406:5617 blocked for more than 143 seconds. [ 286.393636][ T38] Not tainted syzkaller #0 [ 286.393648][ T38] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.393658][ T38] task:syz-executor406 state:D stack:28264 pid:5617 tgid:5617 ppid:5615 task_flags:0x400040 flags:0x00080002 [ 286.393730][ T38] Call Trace: [ 286.393738][ T38] [ 286.393751][ T38] __schedule+0x16d9/0x5700 [ 286.393827][ T38] ? __pfx___schedule+0x10/0x10 [ 286.393884][ T38] rt_mutex_schedule+0x76/0xf0 [ 286.393914][ T38] __rt_mutex_slowlock_locked+0x1f88/0x25b0 [ 286.393956][ T38] ? __rt_mutex_slowlock_locked+0x1d6/0x25b0 [ 286.393991][ T38] ? __pfx___rt_mutex_slowlock_locked+0x10/0x10 [ 286.394035][ T38] ? rcu_is_watching+0x16/0xb0 [ 286.394079][ T38] rt_mutex_slowlock+0xbd/0x180 [ 286.394112][ T38] ? __pfx_rt_mutex_slowlock+0x10/0x10 [ 286.394145][ T38] ? lock_acquire+0x115/0x350 [ 286.394182][ T38] rwbase_write_lock+0x14c/0x720 [ 286.394222][ T38] blkdev_fallocate+0x263/0x550 [ 286.394253][ T38] ? fsnotify_file_area_perm+0x12a/0x1e0 [ 286.394288][ T38] vfs_fallocate+0x663/0x7f0 [ 286.394325][ T38] ? __pfx_vfs_fallocate+0x10/0x10 [ 286.394368][ T38] __x64_sys_fallocate+0xbf/0x110 [ 286.394402][ T38] do_syscall_64+0x166/0x520 [ 286.394426][ T38] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.394451][ T38] ? clear_bhb_loop+0x70/0xc0 [ 286.394488][ T38] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.394513][ T38] RIP: 0033:0x7f4b117ca679 [ 286.394533][ T38] RSP: 002b:00007fff149f1898 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 286.394556][ T38] RAX: ffffffffffffffda RBX: 00007fff149f18d0 RCX: 00007f4b117ca679 [ 286.394574][ T38] RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000004 [ 286.394588][ T38] RBP: 0000000000000000 R08: 00000000000f4240 R09: 00000000000f4240 [ 286.394603][ T38] R10: 0000002000000400 R11: 0000000000000246 R12: 00000000000f4240 [ 286.394618][ T38] R13: 0000000000000002 R14: 00007fff149f18bc R15: 00007fff149f18c0 [ 286.394654][ T38] [ 286.394674][ T38] [ 286.394674][ T38] Showing all locks held in the system: [ 286.394690][ T38] locks held by rcuc/0/20: 3, last CPU#0: [ 286.394708][ T38] #0: ffffffff8e059540 (local_bh){.+.+}-{1:3}, at: __local_bh_disable_ip+0x3d/0x420 [ 286.394775][ T38] #1: ffffffff8e1c3cc0 (rcu_read_lock){....}-{1:3}, at: __local_bh_disable_ip+0x3d/0x420 [ 286.394839][ T38] #2: ffffffff8e1c3de0 (rcu_callback){....}-{0:0}, at: rcu_cpu_kthread+0x217/0x1740 [ 286.394907][ T38] locks held by khungtaskd/38: 1, last CPU#1: [ 286.394923][ T38] #0: ffffffff8e1c3cc0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 286.395005][ T38] locks held by getty/5343: 2, on CPU#0: [ 286.395021][ T38] #0: ffff8880368a90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.395090][ T38] #1: ffffc900044bb2e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x460/0x1360 [ 286.395159][ T38] locks held by syz-executor406/5611: 2, last CPU#0: [ 286.395183][ T38] #0: ffff888026edd8c8 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_fallocate+0x263/0x550 [ 286.395257][ T38] #1: ffff888026edda98 (mapping.invalidate_lock){++++}-{4:4}, at: blkdev_fallocate+0x294/0x550 [ 286.395318][ T38] locks held by syz-executor406/5614: 1, on CPU#1: [ 286.395335][ T38] #0: ffff888026edd8c8 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_fallocate+0x263/0x550 [ 286.395400][ T38] locks held by syz-executor406/5616: 1, on CPU#0: [ 286.395417][ T38] #0: ffff888026edd8c8 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_fallocate+0x263/0x550 [ 286.395490][ T38] locks held by syz-executor406/5617: 1, on CPU#0: [ 286.395507][ T38] #0: ffff888026edd8c8 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_fallocate+0x263/0x550 [ 286.395574][ T38] locks held by syz-executor406/5638: 1, on CPU#0: [ 286.395591][ T38] #0: ffff888026edd8c8 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_fallocate+0x263/0x550 [ 286.395657][ T38] [ 286.395664][ T38] ============================================= [ 286.395664][ T38] [ 286.395685][ T38] NMI backtrace for cpu 1 [ 286.395708][ T38] CPU: 1 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 286.395737][ T38] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 286.395750][ T38] Call Trace: [ 286.395759][ T38] [ 286.395768][ T38] dump_stack_lvl+0xe8/0x150 [ 286.395804][ T38] nmi_cpu_backtrace+0x274/0x2d0 [ 286.395837][ T38] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 286.395864][ T38] nmi_trigger_cpumask_backtrace+0x17d/0x390 [ 286.395900][ T38] sys_info+0x135/0x170 [ 286.395929][ T38] watchdog+0xfd7/0x1030 [ 286.395967][ T38] ? watchdog+0x1c7/0x1030 [ 286.396007][ T38] kthread+0x38b/0x470 [ 286.396031][ T38] ? __pfx_watchdog+0x10/0x10 [ 286.396060][ T38] ? __pfx_kthread+0x10/0x10 [ 286.396085][ T38] ret_from_fork+0x514/0xb70 [ 286.396111][ T38] ? __pfx_ret_from_fork+0x10/0x10 [ 286.396134][ T38] ? __switch_to+0xc89/0x1420 [ 286.396171][ T38] ? __pfx_kthread+0x10/0x10 [ 286.396196][ T38] ret_from_fork_asm+0x1a/0x30 [ 286.396235][ T38] [ 286.396243][ T38] Sending NMI from CPU 1 to CPUs 0: [ 286.396279][ C0] NMI backtrace for cpu 0 [ 286.396294][ C0] CPU: 0 UID: 0 PID: 58 Comm: kworker/0:1H Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 286.396314][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 286.396326][ C0] Workqueue: kblockd blk_mq_run_work_fn [ 286.396353][ C0] RIP: 0010:__lock_acquire+0x582/0x2de0 [ 286.396379][ C0] Code: e0 0b 00 00 00 0f 84 e7 04 00 00 41 3b 9e 08 0c 00 00 0f 8d f3 00 00 00 4c 63 fb 4b 8d 04 bf 49 8d 1c c6 48 81 c3 38 0c 00 00 1d 44 89 e0 49 ff c7 49 63 8e 08 0c 00 00 48 83 c3 28 41 89 c4 [ 286.396395][ C0] RSP: 0018:ffffc9000124edf8 EFLAGS: 00000082 [ 286.396410][ C0] RAX: 0000000000000000 RBX: ffff88801f2b8c38 RCX: 00000000ffffffff [ 286.396423][ C0] RDX: 0000000000000003 RSI: 0000000000020000 RDI: b700000000000000 [ 286.396435][ C0] RBP: ffff88801f2b8c90 R08: ffffffff8177f1bf R09: 0000000000000000 [ 286.396448][ C0] R10: ffffc9000124f0d8 R11: ffffffff81b16f40 R12: ffffffffffffff05 [ 286.396462][ C0] R13: 0000000000000000 R14: ffff88801f2b8000 R15: 0000000000000000 [ 286.396474][ C0] FS: 0000000000000000(0000) GS:ffff888125bc4000(0000) knlGS:0000000000000000 [ 286.396489][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 286.396502][ C0] CR2: 00005599e664d168 CR3: 00000000445a8000 CR4: 00000000003526f0 [ 286.396519][ C0] Call Trace: [ 286.396525][ C0] [ 286.396537][ C0] ? __lock_acquire+0x747/0x2de0 [ 286.396564][ C0] ? lock_acquire+0x115/0x350 [ 286.396590][ C0] lock_acquire+0x115/0x350 [ 286.396613][ C0] ? unwind_next_frame+0x8f/0x2550 [ 286.396640][ C0] ? unwind_next_frame+0x8f/0x2550 [ 286.396661][ C0] ? null_queue_rq+0xc2a/0xe70 [ 286.396686][ C0] ? unwind_next_frame+0x8f/0x2550 [ 286.396708][ C0] unwind_next_frame+0xac/0x2550 [ 286.396729][ C0] ? unwind_next_frame+0x8f/0x2550 [ 286.396753][ C0] ? blk_mq_end_request+0x3e/0x70 [ 286.396780][ C0] ? unwind_next_frame+0x8f/0x2550 [ 286.396803][ C0] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 286.396831][ C0] arch_stack_walk+0x11b/0x150 [ 286.396867][ C0] ? null_queue_rq+0xc2a/0xe70 [ 286.396892][ C0] stack_trace_save+0xa9/0x100 [ 286.396914][ C0] ? __pfx_stack_trace_save+0x10/0x10 [ 286.396937][ C0] ? stack_depot_save_flags+0x33/0x7f0 [ 286.396965][ C0] kasan_save_track+0x3e/0x80 [ 286.396996][ C0] ? kasan_save_track+0x3e/0x80 [ 286.397020][ C0] ? __kasan_kmalloc+0x93/0xb0 [ 286.397046][ C0] ? __kmalloc_cache_noprof+0x3d5/0x680 [ 286.397071][ C0] ? kmem_cache_free+0x156/0x6d0 [ 286.397096][ C0] ? mempool_free+0xf5/0x140 [ 286.397119][ C0] ? bio_endio+0x3f/0xac0 [ 286.397142][ C0] ? blk_update_request+0x57b/0xe50 [ 286.397166][ C0] ? blk_mq_end_request+0x3e/0x70 [ 286.397192][ C0] ? null_queue_rq+0xc2a/0xe70 [ 286.397234][ C0] __kasan_kmalloc+0x93/0xb0 [ 286.397261][ C0] __kmalloc_cache_noprof+0x3d5/0x680 [ 286.397286][ C0] ? kmem_cache_free+0x156/0x6d0 [ 286.397311][ C0] ? kmem_cache_free+0x156/0x6d0 [ 286.397339][ C0] ? mempool_free+0xf5/0x140 [ 286.397362][ C0] kmem_cache_free+0x156/0x6d0 [ 286.397389][ C0] ? __pfx_mempool_free_slab+0x10/0x10 [ 286.397413][ C0] mempool_free+0xf5/0x140 [ 286.397436][ C0] ? __pfx_mempool_free+0x10/0x10 [ 286.397461][ C0] ? bio_free+0x254/0x320 [ 286.397485][ C0] bio_endio+0x3f/0xac0 [ 286.397511][ C0] blk_update_request+0x57b/0xe50 [ 286.397541][ C0] blk_mq_end_request+0x3e/0x70 [ 286.397568][ C0] null_queue_rq+0xc2a/0xe70 [ 286.397596][ C0] blk_mq_dispatch_rq_list+0x4af/0x1a00 [ 286.397622][ C0] ? blk_mq_flush_busy_ctxs+0x9c/0xe0 [ 286.397639][ C0] ? __pfx_blk_mq_dispatch_rq_list+0x10/0x10 [ 286.397662][ C0] __blk_mq_sched_dispatch_requests+0x13b7/0x1590 [ 286.397684][ C0] ? __lock_acquire+0x747/0x2de0 [ 286.397709][ C0] ? __lock_acquire+0x747/0x2de0 [ 286.397734][ C0] ? trace_hrtimer_start+0x82/0x200 [ 286.397756][ C0] ? __pfx___blk_mq_sched_dispatch_requests+0x10/0x10 [ 286.397778][ C0] ? do_raw_spin_lock+0x12b/0x2f0 [ 286.397799][ C0] ? lock_acquire+0x115/0x350 [ 286.397827][ C0] blk_mq_sched_dispatch_requests+0xda/0x1a0 [ 286.397847][ C0] ? process_scheduled_works+0x97a/0x1630 [ 286.397871][ C0] ? blk_mq_run_work_fn+0x9e/0x300 [ 286.397894][ C0] blk_mq_run_work_fn+0x231/0x300 [ 286.397917][ C0] ? process_scheduled_works+0x97a/0x1630 [ 286.397941][ C0] process_scheduled_works+0xc3d/0x1630 [ 286.397983][ C0] ? __pfx_process_scheduled_works+0x10/0x10 [ 286.398010][ C0] ? assign_work+0x3cf/0x5d0 [ 286.398035][ C0] worker_thread+0xa47/0xfb0 [ 286.398065][ C0] ? __kthread_parkme+0x71/0x1f0 [ 286.398096][ C0] kthread+0x38b/0x470 [ 286.398113][ C0] ? __pfx_worker_thread+0x10/0x10 [ 286.398137][ C0] ? __pfx_kthread+0x10/0x10 [ 286.398155][ C0] ret_from_fork+0x514/0xb70 [ 286.398172][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 286.398189][ C0] ? __switch_to+0xc89/0x1420 [ 286.398215][ C0] ? __pfx_kthread+0x10/0x10 [ 286.398233][ C0] ret_from_fork_asm+0x1a/0x30 [ 286.398255][ C0] [ 286.398263][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.984 msecs [ 286.398288][ T38] Kernel panic - not syncing: hung_task: blocked tasks [ 287.809078][ T38] CPU: 1 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 287.818745][ T38] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 287.828826][ T38] Call Trace: [ 287.832134][ T38] [ 287.835082][ T38] vpanic+0x56d/0xa60 [ 287.839087][ T38] ? __pfx_vpanic+0x10/0x10 [ 287.843609][ T38] ? console_srcu_read_unlock+0x3a/0x60 [ 287.849203][ T38] panic+0xc5/0xd0 [ 287.852957][ T38] ? __pfx_panic+0x10/0x10 [ 287.857400][ T38] ? wq_watchdog_touch+0xf9/0x160 [ 287.862493][ T38] ? nmi_trigger_cpumask_backtrace+0x24d/0x390 [ 287.868700][ T38] watchdog+0x1030/0x1030 [ 287.873112][ T38] ? watchdog+0x1c7/0x1030 [ 287.877569][ T38] kthread+0x38b/0x470 [ 287.881661][ T38] ? __pfx_watchdog+0x10/0x10 [ 287.886377][ T38] ? __pfx_kthread+0x10/0x10 [ 287.891093][ T38] ret_from_fork+0x514/0xb70 [ 287.895724][ T38] ? __pfx_ret_from_fork+0x10/0x10 [ 287.900855][ T38] ? __switch_to+0xc89/0x1420 [ 287.905579][ T38] ? __pfx_kthread+0x10/0x10 [ 287.910207][ T38] ret_from_fork_asm+0x1a/0x30 [ 287.915034][ T38] [ 287.918712][ T38] Kernel Offset: disabled [ 287.923069][ T38] Rebooting in 86400 seconds..