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-executor2140408598 <...> Warning: Permanently added '10.128.0.114' (ED25519) to the list of known hosts. execve("ci-upstream-kasan-gce-smack-root/syz-executor2140408598", ["ci-upstream-kasan-gce-smack-root/syz-executor2140408598"], 0x7fff93f72c00 /* 10 vars */) = 0 brk(NULL) = 0x55555d7b2000 brk(0x55555d7b2d80) = 0x55555d7b2d80 arch_prctl(ARCH_SET_FS, 0x55555d7b2400) = 0 set_tid_address(0x55555d7b26d0) = 5626 set_robust_list(0x55555d7b26e0, 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-executor2140408598", 4096) = 61 getrandom("\x21\xa1\xb7\x26\x96\x77\x34\x7a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555d7b2d80 brk(0x55555d7d3d80) = 0x55555d7d3d80 brk(0x55555d7d4000) = 0x55555d7d4000 mprotect(0x7f6a5694a000, 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_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 5627 attached , child_tidptr=0x55555d7b26d0) = 5627 [pid 5627] set_robust_list(0x55555d7b26e0, 24 [pid 5626] rt_sigprocmask(SIG_SETMASK, [] [pid 5627] <... set_robust_list resumed>) = 0 [pid 5626] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5627] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5626] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5626] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5627] rt_sigprocmask(SIG_BLOCK, ~[]ci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5628 attached [pid 5626] <... clone resumed>, child_tidptr=0x55555d7b26d0) = 5628 [pid 5628] set_robust_list(0x55555d7b26e0, 24 [pid 5627] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5626] rt_sigprocmask(SIG_SETMASK, [] [pid 5628] <... set_robust_list resumed>) = 0 [pid 5627] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5626] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5628] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5626] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5628] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5626] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5626] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5628] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5628] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5629 attached [pid 5627] <... clone resumed>, child_tidptr=0x55555d7b26d0) = 5629 [pid 5629] set_robust_list(0x55555d7b26e0, 24 [pid 5627] rt_sigprocmask(SIG_SETMASK, [] [pid 5629] <... set_robust_list resumed>) = 0 [pid 5627] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5629] rt_sigprocmask(SIG_SETMASK, []ci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5631 attached ci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5630 attached [pid 5626] <... clone resumed>, child_tidptr=0x55555d7b26d0) = 5630 [pid 5629] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5626] rt_sigprocmask(SIG_SETMASK, [] [pid 5631] set_robust_list(0x55555d7b26e0, 24 [pid 5630] set_robust_list(0x55555d7b26e0, 24 [pid 5626] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5631] <... set_robust_list resumed>) = 0 [pid 5629] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5628] <... clone resumed>, child_tidptr=0x55555d7b26d0) = 5631 [pid 5626] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5629] <... prctl resumed>) = 0 [pid 5631] rt_sigprocmask(SIG_SETMASK, [] [pid 5630] <... set_robust_list resumed>) = 0 [pid 5628] rt_sigprocmask(SIG_SETMASK, [] [pid 5626] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5626] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5631] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5630] rt_sigprocmask(SIG_SETMASK, [] [pid 5629] setpgid(0, 0 [pid 5628] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5630] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5631] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5630] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5629] <... setpgid resumed>) = 0 [pid 5629] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5631] <... prctl resumed>) = 0 [pid 5630] <... rt_sigprocmask resumed>, [], 8) = 0 ci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5632 attached [pid 5631] setpgid(0, 0 [pid 5630] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5629] <... openat resumed>) = 3 [pid 5626] <... clone resumed>, child_tidptr=0x55555d7b26d0) = 5632 [pid 5632] set_robust_list(0x55555d7b26e0, 24 [pid 5631] <... setpgid resumed>) = 0 [pid 5629] write(3, "1000", 4 [pid 5626] rt_sigprocmask(SIG_SETMASK, [] [pid 5632] <... set_robust_list resumed>) = 0 [pid 5629] <... write resumed>) = 4 [pid 5626] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5632] rt_sigprocmask(SIG_SETMASK, [] [pid 5629] close(3 [pid 5626] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5632] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5629] <... close resumed>) = 0 ci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5633 attached [pid 5626] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5632] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5631] <... openat resumed>) = 3 [pid 5629] write(1, "executing program\n", 18 executing program [pid 5626] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5633] set_robust_list(0x55555d7b26e0, 24 [pid 5632] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5631] write(3, "1000", 4 [pid 5630] <... clone resumed>, child_tidptr=0x55555d7b26d0) = 5633 [pid 5629] <... write resumed>) = 18 [pid 5633] <... set_robust_list resumed>) = 0 [pid 5632] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5631] <... write resumed>) = 4 [pid 5630] rt_sigprocmask(SIG_SETMASK, [] [pid 5629] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNCci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5634 attached [pid 5633] rt_sigprocmask(SIG_SETMASK, [] [pid 5631] close(3 [pid 5633] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5630] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5626] <... clone resumed>, child_tidptr=0x55555d7b26d0) = 5634 [pid 5634] set_robust_list(0x55555d7b26e0, 24ci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5635 attached [pid 5633] setpgid(0, 0 [pid 5631] <... close resumed>) = 0 [pid 5629] <... openat resumed>) = 3 [pid 5626] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... set_robust_list resumed>) = 0 [pid 5626] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5635] set_robust_list(0x55555d7b26e0, 24 [pid 5631] write(1, "executing program\n", 18) = 18 [pid 5632] <... clone resumed>, child_tidptr=0x55555d7b26d0) = 5635 executing program [pid 5635] <... set_robust_list resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5633] <... setpgid resumed>) = 0 [pid 5632] rt_sigprocmask(SIG_SETMASK, [] [pid 5631] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC [pid 5629] dup(3 [pid 5635] rt_sigprocmask(SIG_SETMASK, [] [pid 5633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5632] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5631] <... openat resumed>) = 3 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5629] <... dup resumed>) = 4 [pid 5635] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5633] <... openat resumed>) = 3 [pid 5631] dup(3 [pid 5629] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5635] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5633] write(3, "1000", 4 [pid 5635] <... prctl resumed>) = 0 [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5631] <... dup resumed>) = 4 [pid 5635] setpgid(0, 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5631] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5635] <... setpgid resumed>) = 0 ci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5636 attached [pid 5633] <... write resumed>) = 4 [pid 5636] set_robust_list(0x55555d7b26e0, 24 [pid 5635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5634] <... clone resumed>, child_tidptr=0x55555d7b26d0) = 5636 [pid 5633] close(3 [pid 5636] <... set_robust_list resumed>) = 0 [pid 5635] <... openat resumed>) = 3 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5633] <... close resumed>) = 0 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5635] write(3, "1000", 4 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5633] write(1, "executing program\n", 18 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5635] <... write resumed>) = 4 executing program [pid 5636] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5635] close(3 [pid 5633] <... write resumed>) = 18 [pid 5635] <... close resumed>) = 0 [pid 5633] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC [pid 5636] <... prctl resumed>) = 0 [pid 5635] write(1, "executing program\n", 18 [pid 5636] setpgid(0, 0 [pid 5633] <... openat resumed>) = 3 [pid 5635] <... write resumed>) = 18 [pid 5636] <... setpgid resumed>) = 0 executing program [pid 5635] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC [pid 5636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5633] dup(3) = 4 [pid 5635] <... openat resumed>) = 3 [pid 5633] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5635] dup(3 [pid 5636] <... openat resumed>) = 3 [pid 5635] <... dup resumed>) = 4 [pid 5636] write(3, "1000", 4 [pid 5635] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5636] <... write resumed>) = 4 [pid 5636] close(3) = 0 [pid 5636] write(1, "executing program\n", 18) = 18 executing program [pid 5636] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC) = 3 [pid 5636] dup(3) = 4 [pid 5636] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5627] kill(-5629, SIGKILL) = 0 [pid 5627] kill(5629, SIGKILL) = 0 [pid 5628] kill(-5631, SIGKILL) = 0 [pid 5628] kill(5631, SIGKILL) = 0 [pid 5630] kill(-5633, SIGKILL [pid 5632] kill(-5635, SIGKILL [pid 5630] <... kill resumed>) = 0 [pid 5630] kill(5633, SIGKILL [pid 5632] <... kill resumed>) = 0 [pid 5630] <... kill resumed>) = 0 [pid 5632] kill(5635, SIGKILL) = 0 [pid 5634] kill(-5636, SIGKILL) = 0 [pid 5634] kill(5636, SIGKILL) = 0 [pid 5627] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5628] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5632] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... openat resumed>) = 3 [pid 5627] <... openat resumed>) = 3 [pid 5634] fstat(3 [pid 5627] fstat(3 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5627] <... fstat resumed>, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5634] getdents64(3 [pid 5632] <... openat resumed>) = 3 [pid 5627] getdents64(3 [pid 5634] <... getdents64 resumed>, 0x55555d7b37a0 /* 2 entries */, 32768) = 48 [pid 5632] fstat(3 [pid 5627] <... getdents64 resumed>, 0x55555d7b37a0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(3 [pid 5632] <... fstat resumed>, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d7b37a0 /* 0 entries */, 32768) = 0 [pid 5628] <... openat resumed>) = 3 [pid 5627] getdents64(3 [pid 5634] close(3 [pid 5627] <... getdents64 resumed>, 0x55555d7b37a0 /* 0 entries */, 32768) = 0 [pid 5627] close(3 [pid 5634] <... close resumed>) = 0 [pid 5632] getdents64(3 [pid 5628] fstat(3 [pid 5627] <... close resumed>) = 0 [pid 5632] <... getdents64 resumed>, 0x55555d7b37a0 /* 2 entries */, 32768) = 48 [pid 5628] <... fstat resumed>, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5632] getdents64(3 [pid 5628] getdents64(3 [pid 5632] <... getdents64 resumed>, 0x55555d7b37a0 /* 0 entries */, 32768) = 0 [pid 5628] <... getdents64 resumed>, 0x55555d7b37a0 /* 2 entries */, 32768) = 48 [pid 5632] close(3 [pid 5628] getdents64(3 [pid 5632] <... close resumed>) = 0 [pid 5628] <... getdents64 resumed>, 0x55555d7b37a0 /* 0 entries */, 32768) = 0 [pid 5628] close(3 [pid 5630] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5628] <... close resumed>) = 0 [pid 5630] <... openat resumed>) = 3 [pid 5630] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5630] getdents64(3, 0x55555d7b37a0 /* 2 entries */, 32768) = 48 [pid 5630] getdents64(3, 0x55555d7b37a0 /* 0 entries */, 32768) = 0 [pid 5630] close(3) = 0 [pid 5629] <... fallocate resumed>) = ? [pid 5629] +++ killed by SIGKILL +++ [pid 5627] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5629, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=7993 /* 79.93 s */} --- [pid 5627] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5627] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555d7b26d0) = 5648 [pid 5627] rt_sigprocmask(SIG_SETMASK, []ci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5648 attached , NULL, 8) = 0 [pid 5648] set_robust_list(0x55555d7b26e0, 24) = 0 [pid 5648] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5648] setpgid(0, 0) = 0 [pid 5648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5648] write(3, "1000", 4) = 4 [pid 5648] close(3) = 0 [pid 5648] write(1, "executing program\n", 18) = 18 executing program [pid 5648] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC) = 3 [pid 5648] dup(3) = 4 [pid 5648] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5627] kill(-5648, SIGKILL) = 0 [pid 5627] kill(5648, SIGKILL) = 0 [pid 5627] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5627] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5627] getdents64(3, 0x55555d7b37a0 /* 2 entries */, 32768) = 48 [pid 5627] getdents64(3, 0x55555d7b37a0 /* 0 entries */, 32768) = 0 [pid 5627] close(3) = 0 [ 435.031292][ T39] INFO: task syz-executor214:5633 blocked for more than 143 seconds. [ 435.031326][ T39] Not tainted syzkaller #0 [ 435.031339][ T39] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 435.031350][ T39] task:syz-executor214 state:D stack:27624 pid:5633 tgid:5633 ppid:5630 task_flags:0x400040 flags:0x00080002 [ 435.031441][ T39] Call Trace: [ 435.031451][ T39] [ 435.031471][ T39] __schedule+0x16d9/0x5700 [ 435.031553][ T39] ? __pfx___schedule+0x10/0x10 [ 435.031603][ T39] rt_mutex_schedule+0x76/0xf0 [ 435.031635][ T39] __rt_mutex_slowlock_locked+0x1f88/0x25b0 [ 435.031678][ T39] ? __rt_mutex_slowlock_locked+0x1d6/0x25b0 [ 435.031714][ T39] ? __pfx___rt_mutex_slowlock_locked+0x10/0x10 [ 435.031759][ T39] ? rcu_is_watching+0x16/0xb0 [ 435.031790][ T39] rt_mutex_slowlock+0xbd/0x180 [ 435.031831][ T39] ? __pfx_rt_mutex_slowlock+0x10/0x10 [ 435.031872][ T39] ? lock_acquire+0x115/0x350 [ 435.031912][ T39] rwbase_write_lock+0x14c/0x720 [ 435.031961][ T39] blkdev_fallocate+0x263/0x550 [ 435.032007][ T39] ? fsnotify_file_area_perm+0x12a/0x1e0 [ 435.032046][ T39] vfs_fallocate+0x663/0x7f0 [ 435.032087][ T39] ? __pfx_vfs_fallocate+0x10/0x10 [ 435.032133][ T39] __x64_sys_fallocate+0xbf/0x110 [ 435.032171][ T39] do_syscall_64+0x166/0x520 [ 435.032203][ T39] ? trace_irq_disable+0x3b/0x140 [ 435.032236][ T39] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 435.032261][ T39] ? clear_bhb_loop+0x70/0xc0 [ 435.032292][ T39] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 435.032321][ T39] RIP: 0033:0x7f6a568b7579 [ 435.032350][ T39] RSP: 002b:00007ffc7a04a768 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 435.032376][ T39] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6a568b7579 [ 435.032393][ T39] RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000004 [ 435.032413][ T39] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 435.032428][ T39] R10: 0000002000000400 R11: 0000000000000246 R12: 00007ffc7a04a8e8 [ 435.032444][ T39] R13: 0000000000000002 R14: 00007ffc7a04a790 R15: 00007ffc7a04a780 [ 435.032482][ T39] [ 435.032499][ T39] INFO: task syz-executor214:5635 blocked for more than 143 seconds. [ 435.032517][ T39] Not tainted syzkaller #0 [ 435.032529][ T39] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 435.032681][ T39] task:syz-executor214 state:D stack:28264 pid:5635 tgid:5635 ppid:5632 task_flags:0x400040 flags:0x00080002 [ 435.032780][ T39] Call Trace: [ 435.032789][ T39] [ 435.032803][ T39] __schedule+0x16d9/0x5700 [ 435.032868][ T39] ? __pfx___schedule+0x10/0x10 [ 435.032918][ T39] rt_mutex_schedule+0x76/0xf0 [ 435.032949][ T39] __rt_mutex_slowlock_locked+0x1f88/0x25b0 [ 435.033000][ T39] ? __rt_mutex_slowlock_locked+0x1d6/0x25b0 [ 435.033035][ T39] ? __pfx___rt_mutex_slowlock_locked+0x10/0x10 [ 435.033080][ T39] ? rcu_is_watching+0x16/0xb0 [ 435.033112][ T39] rt_mutex_slowlock+0xbd/0x180 [ 435.033152][ T39] ? __pfx_rt_mutex_slowlock+0x10/0x10 [ 435.033193][ T39] ? lock_acquire+0x115/0x350 [ 435.033232][ T39] rwbase_write_lock+0x14c/0x720 [ 435.033281][ T39] blkdev_fallocate+0x263/0x550 [ 435.033315][ T39] ? fsnotify_file_area_perm+0x12a/0x1e0 [ 435.033354][ T39] vfs_fallocate+0x663/0x7f0 [ 435.033393][ T39] ? __pfx_vfs_fallocate+0x10/0x10 [ 435.033438][ T39] __x64_sys_fallocate+0xbf/0x110 [ 435.033474][ T39] do_syscall_64+0x166/0x520 [ 435.033507][ T39] ? trace_irq_disable+0x3b/0x140 [ 435.033539][ T39] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 435.033563][ T39] ? clear_bhb_loop+0x70/0xc0 [ 435.033593][ T39] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 435.033617][ T39] RIP: 0033:0x7f6a568b7579 [ 435.033637][ T39] RSP: 002b:00007ffc7a04a768 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 435.033662][ T39] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6a568b7579 [ 435.033678][ T39] RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000004 [ 435.033693][ T39] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 435.033707][ T39] R10: 0000002000000400 R11: 0000000000000246 R12: 00007ffc7a04a8e8 [ 435.033723][ T39] R13: 0000000000000002 R14: 00007ffc7a04a790 R15: 00007ffc7a04a780 [ 435.033761][ T39] [ 435.033771][ T39] INFO: task syz-executor214:5636 blocked for more than 143 seconds. [ 435.033788][ T39] Not tainted syzkaller #0 [ 435.033800][ T39] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 435.033810][ T39] task:syz-executor214 state:D stack:28160 pid:5636 tgid:5636 ppid:5634 task_flags:0x400040 flags:0x00080002 [ 435.033884][ T39] Call Trace: [ 435.033892][ T39] [ 435.033907][ T39] __schedule+0x16d9/0x5700 [ 435.033969][ T39] ? __pfx___schedule+0x10/0x10 [ 435.034027][ T39] rt_mutex_schedule+0x76/0xf0 [ 435.034058][ T39] __rt_mutex_slowlock_locked+0x1f88/0x25b0 [ 435.034101][ T39] ? __rt_mutex_slowlock_locked+0x1d6/0x25b0 [ 435.034137][ T39] ? __pfx___rt_mutex_slowlock_locked+0x10/0x10 [ 435.034183][ T39] ? rcu_is_watching+0x16/0xb0 [ 435.034214][ T39] rt_mutex_slowlock+0xbd/0x180 [ 435.034253][ T39] ? __pfx_rt_mutex_slowlock+0x10/0x10 [ 435.034293][ T39] ? lock_acquire+0x115/0x350 [ 435.034332][ T39] rwbase_write_lock+0x14c/0x720 [ 435.034379][ T39] blkdev_fallocate+0x263/0x550 [ 435.034413][ T39] ? fsnotify_file_area_perm+0x12a/0x1e0 [ 435.034451][ T39] vfs_fallocate+0x663/0x7f0 [ 435.034493][ T39] ? __pfx_vfs_fallocate+0x10/0x10 [ 435.034538][ T39] __x64_sys_fallocate+0xbf/0x110 [ 435.034576][ T39] do_syscall_64+0x166/0x520 [ 435.034607][ T39] ? trace_irq_disable+0x3b/0x140 [ 435.034639][ T39] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 435.034663][ T39] ? clear_bhb_loop+0x70/0xc0 [ 435.034692][ T39] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 435.034717][ T39] RIP: 0033:0x7f6a568b7579 [ 435.034737][ T39] RSP: 002b:00007ffc7a04a768 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 435.034760][ T39] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6a568b7579 [ 435.034776][ T39] RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000004 [ 435.034791][ T39] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 435.034805][ T39] R10: 0000002000000400 R11: 0000000000000246 R12: 00007ffc7a04a8e8 [ 435.034822][ T39] R13: 0000000000000002 R14: 00007ffc7a04a790 R15: 00007ffc7a04a780 [ 435.034857][ T39] [ 435.034878][ T39] [ 435.034878][ T39] Showing all locks held in the system: [ 435.034893][ T39] locks held by khungtaskd/39: 1, last CPU#0: [ 435.034910][ T39] #0: ffffffff8f1c3cc0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 435.035008][ T39] locks held by getty/5338: 2, on CPU#1: [ 435.035025][ T39] #0: ffff88803729c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 435.035090][ T39] #1: ffffc900044d32e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x460/0x1360 [ 435.035149][ T39] locks held by syz-executor214/5631: 2, last CPU#1: [ 435.035166][ T39] #0: ffff88802832f348 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_fallocate+0x263/0x550 [ 435.035235][ T39] #1: ffff88802832f518 (mapping.invalidate_lock){++++}-{4:4}, at: blkdev_fallocate+0x294/0x550 [ 435.035299][ T39] locks held by syz-executor214/5633: 1, on CPU#0: [ 435.035316][ T39] #0: ffff88802832f348 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_fallocate+0x263/0x550 [ 435.035385][ T39] locks held by syz-executor214/5635: 1, on CPU#1: [ 435.035403][ T39] #0: ffff88802832f348 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_fallocate+0x263/0x550 [ 435.035473][ T39] locks held by syz-executor214/5636: 1, on CPU#0: [ 435.035491][ T39] #0: ffff88802832f348 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_fallocate+0x263/0x550 [ 435.035562][ T39] locks held by syz-executor214/5648: 1, on CPU#0: [ 435.035579][ T39] #0: ffff88802832f348 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_fallocate+0x263/0x550 [ 435.035647][ T39] [ 435.035654][ T39] ============================================= [ 435.035654][ T39] [ 435.035676][ T39] NMI backtrace for cpu 0 [ 435.035705][ T39] CPU: 0 UID: 0 PID: 39 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 435.035734][ T39] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 435.035747][ T39] Call Trace: [ 435.035755][ T39] [ 435.035765][ T39] dump_stack_lvl+0xe8/0x150 [ 435.035801][ T39] nmi_cpu_backtrace+0x274/0x2d0 [ 435.035827][ T39] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 435.035855][ T39] nmi_trigger_cpumask_backtrace+0x17d/0x390 [ 435.035885][ T39] sys_info+0x135/0x170 [ 435.035907][ T39] watchdog+0xfd7/0x1030 [ 435.035948][ T39] ? watchdog+0x1c7/0x1030 [ 435.035994][ T39] kthread+0x38b/0x470 [ 435.036020][ T39] ? __pfx_watchdog+0x10/0x10 [ 435.036050][ T39] ? __pfx_kthread+0x10/0x10 [ 435.036077][ T39] ret_from_fork+0x514/0xb70 [ 435.036105][ T39] ? __pfx_ret_from_fork+0x10/0x10 [ 435.036130][ T39] ? __switch_to+0xc89/0x1420 [ 435.036169][ T39] ? __pfx_kthread+0x10/0x10 [ 435.036195][ T39] ret_from_fork_asm+0x1a/0x30 [ 435.036237][ T39] [ 435.036246][ T39] Sending NMI from CPU 0 to CPUs 1: [ 435.036279][ C1] NMI backtrace for cpu 1 [ 435.036295][ C1] CPU: 1 UID: 0 PID: 5631 Comm: syz-executor214 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 435.036316][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 435.036327][ C1] RIP: 0010:bio_split_io_at+0x304/0xed0 [ 435.036360][ C1] Code: c6 05 00 00 45 8b 66 08 8b 54 24 14 41 29 d4 8b 44 24 64 41 39 c4 44 0f 43 e0 49 83 c6 0c 4c 89 f0 48 c1 e8 03 42 0f b6 04 28 <84> c0 0f 85 b2 05 00 00 45 8b 2e 41 01 d5 4c 89 e8 48 c1 e0 20 44 [ 435.036376][ C1] RSP: 0018:ffffc90004cdf6a0 EFLAGS: 00000a03 [ 435.036393][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000 [ 435.036405][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880652251d8 [ 435.036417][ C1] RBP: ffffc90004cdf810 R08: 0000000000000000 R09: 0000000000000000 [ 435.036429][ C1] R10: 0000000000000100 R11: 0000000000000009 R12: 0000000000001000 [ 435.036440][ C1] R13: dffffc0000000000 R14: ffff8880652251dc R15: ffffea00002dea00 [ 435.036455][ C1] FS: 000055555d7b2400(0000) GS:ffff888124abc000(0000) knlGS:0000000000000000 [ 435.036471][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 435.036489][ C1] CR2: 0000561636f47168 CR3: 0000000038058000 CR4: 00000000003526f0 [ 435.036507][ C1] Call Trace: [ 435.036513][ C1] [ 435.036533][ C1] ? __pfx_bio_split_io_at+0x10/0x10 [ 435.036559][ C1] ? submit_bio_noacct_nocheck+0x34e/0xa40 [ 435.036583][ C1] bio_split_rw+0x2a3/0x4e0 [ 435.036631][ C1] blk_mq_submit_bio+0xa7b/0x2c60 [ 435.036656][ C1] ? blk_mq_submit_bio+0x307/0x2c60 [ 435.036680][ C1] ? __pfx_blk_mq_submit_bio+0x10/0x10 [ 435.036701][ C1] ? blk_cgroup_bio_start+0x2a5/0x670 [ 435.036728][ C1] ? __pfx_blk_cgroup_bio_start+0x10/0x10 [ 435.036754][ C1] ? __submit_bio+0x7e/0x340 [ 435.036778][ C1] submit_bio_noacct_nocheck+0x34e/0xa40 [ 435.036802][ C1] ? __pfx_submit_bio_noacct_nocheck+0x10/0x10 [ 435.036825][ C1] ? submit_bio_noacct+0x108c/0x1c00 [ 435.036859][ C1] bio_chain_and_submit+0xeb/0x130 [ 435.036886][ C1] __blkdev_issue_zero_pages+0x34c/0x3d0 [ 435.036924][ C1] blkdev_issue_zeroout+0x48e/0x600 [ 435.036953][ C1] ? __pfx_blkdev_issue_zeroout+0x10/0x10 [ 435.036984][ C1] ? __pfx_rt_mutex_slowunlock+0x10/0x10 [ 435.037007][ C1] ? truncate_bdev_range+0xed/0x100 [ 435.037028][ C1] ? truncate_bdev_range+0xed/0x100 [ 435.037048][ C1] blkdev_fallocate+0x472/0x550 [ 435.037075][ C1] vfs_fallocate+0x663/0x7f0 [ 435.037104][ C1] ? __pfx_vfs_fallocate+0x10/0x10 [ 435.037135][ C1] __x64_sys_fallocate+0xbf/0x110 [ 435.037163][ C1] do_syscall_64+0x166/0x520 [ 435.037187][ C1] ? trace_irq_disable+0x3b/0x140 [ 435.037213][ C1] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 435.037231][ C1] ? clear_bhb_loop+0x70/0xc0 [ 435.037252][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 435.037271][ C1] RIP: 0033:0x7f6a568b7579 [ 435.037288][ C1] Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 00 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 d8 ff ff ff f7 d8 64 89 01 48 [ 435.037303][ C1] RSP: 002b:00007ffc7a04a768 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 435.037321][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6a568b7579 [ 435.037334][ C1] RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000004 [ 435.037344][ C1] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 435.037355][ C1] R10: 0000002000000400 R11: 0000000000000246 R12: 00007ffc7a04a8e8 [ 435.037368][ C1] R13: 0000000000000002 R14: 00007ffc7a04a790 R15: 00007ffc7a04a780 [ 435.037390][ C1] [ 435.037399][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.120 msecs [ 435.038290][ T39] Kernel panic - not syncing: hung_task: blocked tasks [ 436.348158][ T39] CPU: 0 UID: 0 PID: 39 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 436.358717][ T39] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 436.368827][ T39] Call Trace: [ 436.372555][ T39] [ 436.375531][ T39] vpanic+0x56d/0xa60 [ 436.380615][ T39] ? __pfx_vpanic+0x10/0x10 [ 436.385169][ T39] ? console_srcu_read_unlock+0x3a/0x60 [ 436.390787][ T39] panic+0xc5/0xd0 [ 436.394616][ T39] ? __pfx_panic+0x10/0x10 [ 436.399085][ T39] ? wq_watchdog_touch+0xf9/0x160 [ 436.404337][ T39] ? nmi_trigger_cpumask_backtrace+0x24d/0x390 [ 436.410910][ T39] watchdog+0x1030/0x1030 [ 436.415382][ T39] ? watchdog+0x1c7/0x1030 [ 436.421065][ T39] kthread+0x38b/0x470 [ 436.425192][ T39] ? __pfx_watchdog+0x10/0x10 [ 436.429924][ T39] ? __pfx_kthread+0x10/0x10 [ 436.434748][ T39] ret_from_fork+0x514/0xb70 [ 436.442151][ T39] ? __pfx_ret_from_fork+0x10/0x10 [ 436.447323][ T39] ? __switch_to+0xc89/0x1420 [ 436.452073][ T39] ? __pfx_kthread+0x10/0x10 [ 436.456727][ T39] ret_from_fork_asm+0x1a/0x30 [ 436.461585][ T39] [ 436.465273][ T39] Kernel Offset: disabled [ 436.469620][ T39] Rebooting in 86400 seconds..