./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3981272154 <...> Warning: Permanently added '10.128.0.231' (ED25519) to the list of known hosts. execve("./syz-executor3981272154", ["./syz-executor3981272154"], 0x7fffb4699280 /* 10 vars */) = 0 brk(NULL) = 0x55555a180000 brk(0x55555a180d40) = 0x55555a180d40 arch_prctl(ARCH_SET_FS, 0x55555a1803c0) = 0 set_tid_address(0x55555a180690) = 5070 set_robust_list(0x55555a1806a0, 24) = 0 rseq(0x55555a180ce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3981272154", 4096) = 28 getrandom("\xd5\x42\xd3\x94\x8e\xa1\x9d\x58", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555a180d40 brk(0x55555a1a1d40) = 0x55555a1a1d40 brk(0x55555a1a2000) = 0x55555a1a2000 mprotect(0x7ff7c6317000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555a180690) = 5071 ./strace-static-x86_64: Process 5071 attached [pid 5071] set_robust_list(0x55555a1806a0, 24) = 0 [pid 5071] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5071] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5071] setsid() = 1 [pid 5071] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5071] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5071] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5071] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5071] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5071] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5071] unshare(CLONE_NEWNS) = 0 [pid 5071] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5071] unshare(CLONE_NEWIPC) = 0 [pid 5071] unshare(CLONE_NEWCGROUP) = 0 [pid 5071] unshare(CLONE_NEWUTS) = 0 [pid 5071] unshare(CLONE_SYSVSEM) = 0 [pid 5071] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "16777216", 8) = 8 [pid 5071] close(3) = 0 [pid 5071] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "536870912", 9) = 9 [pid 5071] close(3) = 0 [pid 5071] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "1024", 4) = 4 [pid 5071] close(3) = 0 [pid 5071] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "8192", 4) = 4 [pid 5071] close(3) = 0 [pid 5071] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "1024", 4) = 4 [pid 5071] close(3) = 0 [pid 5071] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "1024", 4) = 4 [pid 5071] close(3) = 0 [pid 5071] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5071] close(3) = 0 [pid 5071] getpid() = 1 [pid 5071] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< {parent_tid=[3]}, 88) = 3 ./strace-static-x86_64: Process 5075 attached [pid 5074] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5074] futex(0x7ff7c631d328, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5074] futex(0x7ff7c631d32c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5075] rseq(0x7ff7c624efe0, 0x20, 0, 0x53053053) = 0 [pid 5075] set_robust_list(0x7ff7c624e9a0, 24) = 0 [pid 5075] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5075] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 5075] futex(0x7ff7c631d32c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5075] futex(0x7ff7c631d328, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5074] <... futex resumed>) = 0 [pid 5074] futex(0x7ff7c631d328, FUTEX_WAKE_PRIVATE, 1000000 [pid 5075] <... futex resumed>) = 0 [pid 5074] <... futex resumed>) = 1 [pid 5075] socketpair(AF_UNIX, SOCK_STREAM, 0, [4, 5]) = 0 [pid 5074] futex(0x7ff7c631d32c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5075] futex(0x7ff7c631d32c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5074] <... futex resumed>) = 0 [pid 5075] futex(0x7ff7c631d328, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5074] futex(0x7ff7c631d328, FUTEX_WAKE_PRIVATE, 1000000 [pid 5075] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5074] <... futex resumed>) = 0 [pid 5075] ioctl(3, NBD_SET_SOCK, 4 [pid 5074] futex(0x7ff7c631d32c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5075] <... ioctl resumed>) = 0 [pid 5075] futex(0x7ff7c631d32c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5074] <... futex resumed>) = 0 [pid 5075] futex(0x7ff7c631d328, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5074] futex(0x7ff7c631d328, FUTEX_WAKE_PRIVATE, 1000000 [pid 5075] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5074] <... futex resumed>) = 0 [pid 5075] ioctl(3, NBD_DO_IT [pid 5074] futex(0x7ff7c631d32c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5074] futex(0x7ff7c631d33c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5074] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff7c620d000 [pid 5074] mprotect(0x7ff7c620e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5074] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5074] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff7c622d990, parent_tid=0x7ff7c622d990, exit_signal=0, stack=0x7ff7c620d000, stack_size=0x20300, tls=0x7ff7c622d6c0}./strace-static-x86_64: Process 5076 attached => {parent_tid=[4]}, 88) = 4 [pid 5076] rseq(0x7ff7c622dfe0, 0x20, 0, 0x53053053) = 0 [pid 5074] rt_sigprocmask(SIG_SETMASK, [], [pid 5076] set_robust_list(0x7ff7c622d9a0, 24 [pid 5074] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5076] <... set_robust_list resumed>) = 0 [pid 5074] futex(0x7ff7c631d338, FUTEX_WAKE_PRIVATE, 1000000 [pid 5076] rt_sigprocmask(SIG_SETMASK, [], [pid 5074] <... futex resumed>) = 0 [pid 5076] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5076] ioctl(3, NBD_SET_SIZE_BLOCKS, 1 [pid 5074] futex(0x7ff7c631d33c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5076] <... ioctl resumed>) = 0 [pid 5076] futex(0x7ff7c631d33c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5074] <... futex resumed>) = 0 [ 56.243036][ T5076] nbd0: detected capacity change from 0 to 2 [pid 5076] futex(0x7ff7c631d338, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5074] close(3) = 0 [pid 5074] close(4) = 0 [pid 5074] close(5) = 0 [pid 5074] close(6) = -1 EBADF (Bad file descriptor) [pid 5074] close(7) = -1 EBADF (Bad file descriptor) [pid 5074] close(8) = -1 EBADF (Bad file descriptor) [pid 5074] close(9) = -1 EBADF (Bad file descriptor) [pid 5074] close(10) = -1 EBADF (Bad file descriptor) [pid 5074] close(11) = -1 EBADF (Bad file descriptor) [pid 5074] close(12) = -1 EBADF (Bad file descriptor) [pid 5074] close(13) = -1 EBADF (Bad file descriptor) [pid 5074] close(14) = -1 EBADF (Bad file descriptor) [pid 5074] close(15) = -1 EBADF (Bad file descriptor) [pid 5074] close(16) = -1 EBADF (Bad file descriptor) [pid 5074] close(17) = -1 EBADF (Bad file descriptor) [pid 5074] close(18) = -1 EBADF (Bad file descriptor) [pid 5074] close(19) = -1 EBADF (Bad file descriptor) [pid 5074] close(20) = -1 EBADF (Bad file descriptor) [pid 5074] close(21) = -1 EBADF (Bad file descriptor) [ 56.441211][ T4469] block nbd0: Receive control failed (result -104) [pid 5074] close(22) = -1 EBADF (Bad file descriptor) [pid 5074] close(23) = -1 EBADF (Bad file descriptor) [pid 5074] close(24) = -1 EBADF (Bad file descriptor) [pid 5074] close(25) = -1 EBADF (Bad file descriptor) [pid 5074] close(26) = -1 EBADF (Bad file descriptor) [pid 5074] close(27) = -1 EBADF (Bad file descriptor) [pid 5074] close(28) = -1 EBADF (Bad file descriptor) [pid 5074] close(29) = -1 EBADF (Bad file descriptor) [pid 5074] exit_group(0 [pid 5076] <... futex resumed>) = ? [pid 5074] <... exit_group resumed>) = ? [pid 5076] +++ exited with 0 +++ [pid 5071] kill(-2, SIGKILL) = 0 [pid 5071] kill(2, SIGKILL) = 0 [pid 5071] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5071] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5071] getdents64(3, 0x55555a181730 /* 2 entries */, 32768) = 48 [pid 5071] getdents64(3, 0x55555a181730 /* 0 entries */, 32768) = 0 [pid 5071] close(3) = 0 [ 76.754864][ T57] cfg80211: failed to load regulatory.db [ 86.354144][ T98] block nbd0: Possible stuck request ffff888020cf0000: control (read@0,1024B). Runtime 30 seconds [ 116.433562][ T98] block nbd0: Possible stuck request ffff888020cf0000: control (read@0,1024B). Runtime 60 seconds [ 117.763113][ T4525] udevd[4525]: worker [5072] /devices/virtual/block/nbd0 is taking a long time [ 146.513176][ T98] block nbd0: Possible stuck request ffff888020cf0000: control (read@0,1024B). Runtime 90 seconds [ 176.593138][ T98] block nbd0: Possible stuck request ffff888020cf0000: control (read@0,1024B). Runtime 120 seconds [ 206.673273][ T25] block nbd0: Possible stuck request ffff888020cf0000: control (read@0,1024B). Runtime 150 seconds [ 236.753368][ T25] block nbd0: Possible stuck request ffff888020cf0000: control (read@0,1024B). Runtime 180 seconds [ 237.923061][ T4525] udevd[4525]: worker [5072] /devices/virtual/block/nbd0 timeout; kill it [ 237.931728][ T4525] udevd[4525]: seq 7625 '/devices/virtual/block/nbd0' killed [ 266.833210][ T25] block nbd0: Possible stuck request ffff888020cf0000: control (read@0,1024B). Runtime 210 seconds [ 286.673132][ T29] INFO: task syz-executor398:5075 blocked for more than 143 seconds. [ 286.681436][ T29] Not tainted 6.9.0-rc6-syzkaller-00053-g0106679839f7 #0 [ 286.689050][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.697755][ T29] task:syz-executor398 state:D stack:26008 pid:5075 tgid:5074 ppid:5071 flags:0x00004006 [ 286.707998][ T29] Call Trace: [ 286.711283][ T29] [ 286.714263][ T29] __schedule+0x1796/0x4a00 [ 286.718946][ T29] ? __pfx___schedule+0x10/0x10 [ 286.723852][ T29] ? __pfx_lock_release+0x10/0x10 [ 286.728931][ T29] ? __mutex_trylock_common+0x92/0x2e0 [ 286.734443][ T29] ? schedule+0x90/0x320 [ 286.738716][ T29] schedule+0x14b/0x320 [ 286.742930][ T29] schedule_preempt_disabled+0x13/0x30 [ 286.748401][ T29] __mutex_lock+0x6a4/0xd70 [ 286.753118][ T29] ? __mutex_lock+0x527/0xd70 [ 286.757822][ T29] ? bdev_release+0x1c8/0x720 [ 286.762518][ T29] ? __pfx___mutex_lock+0x10/0x10 [ 286.767627][ T29] ? __fsnotify_parent+0x20c/0x5e0 [ 286.772782][ T29] ? __pfx___fsnotify_parent+0x10/0x10 [ 286.778289][ T29] bdev_release+0x1c8/0x720 [ 286.782801][ T29] ? __pfx_blkdev_release+0x10/0x10 [ 286.788036][ T29] blkdev_release+0x15/0x20 [ 286.792543][ T29] __fput+0x429/0x8a0 [ 286.796606][ T29] task_work_run+0x24f/0x310 [ 286.801259][ T29] ? __pfx_task_work_run+0x10/0x10 [ 286.807137][ T29] ? __phys_addr+0xba/0x170 [ 286.811686][ T29] ptrace_notify+0x2d2/0x380 [ 286.816364][ T29] ? __pfx_ptrace_notify+0x10/0x10 [ 286.821505][ T29] ? __pfx_task_work_add+0x10/0x10 [ 286.826699][ T29] ? blkdev_ioctl+0x5e5/0x740 [ 286.831416][ T29] ? __pfx_blkdev_ioctl+0x10/0x10 [ 286.836509][ T29] syscall_exit_work+0xc6/0x190 [ 286.841396][ T29] syscall_exit_to_user_mode+0x273/0x370 [ 286.847170][ T29] do_syscall_64+0x102/0x240 [ 286.851810][ T29] ? clear_bhb_loop+0x35/0x90 [ 286.856581][ T29] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.862488][ T29] RIP: 0033:0x7ff7c6296479 [ 286.866946][ T29] RSP: 002b:00007ff7c624e228 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 286.875390][ T29] RAX: 0000000000000000 RBX: 00007ff7c631d328 RCX: 00007ff7c6296479 [ 286.883415][ T29] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003 [ 286.891391][ T29] RBP: 00007ff7c631d320 R08: 00007ff7c624e6c0 R09: 00007ff7c624e6c0 [ 286.899395][ T29] R10: 00007ff7c624e6c0 R11: 0000000000000246 R12: 00007ff7c631d32c [ 286.907436][ T29] R13: 00007ff7c62ea18c R14: 64626e2f7665642f R15: 00007ffe08fb0008 [ 286.915455][ T29] [ 286.918496][ T29] [ 286.918496][ T29] Showing all locks held in the system: [ 286.926268][ T29] 1 lock held by khungtaskd/29: [ 286.931139][ T29] #0: ffffffff8e334d60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 286.941056][ T29] 2 locks held by getty/4821: [ 286.945770][ T29] #0: ffff88802b0220a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.955646][ T29] #1: ffffc9000312b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 286.965906][ T29] 1 lock held by udevd/5072: [ 286.970501][ T29] #0: ffff8880206da4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xdd/0xcb0 [ 286.979812][ T29] 1 lock held by syz-executor398/5075: [ 286.985298][ T29] #0: ffff8880206da4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x1c8/0x720 [ 286.994899][ T29] [ 286.997245][ T29] ============================================= [ 286.997245][ T29] [ 287.005675][ T29] NMI backtrace for cpu 1 [ 287.009999][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc6-syzkaller-00053-g0106679839f7 #0 [ 287.019783][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 287.029825][ T29] Call Trace: [ 287.033089][ T29] [ 287.036003][ T29] dump_stack_lvl+0x241/0x360 [ 287.040693][ T29] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.045875][ T29] ? __pfx__printk+0x10/0x10 [ 287.050482][ T29] ? vprintk_emit+0x631/0x770 [ 287.055143][ T29] ? __pfx_vprintk_emit+0x10/0x10 [ 287.060153][ T29] nmi_cpu_backtrace+0x49c/0x4d0 [ 287.065116][ T29] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.070582][ T29] ? _printk+0xd5/0x120 [ 287.074730][ T29] ? __pfx__printk+0x10/0x10 [ 287.079319][ T29] ? __wake_up_klogd+0xcc/0x110 [ 287.084163][ T29] ? __pfx__printk+0x10/0x10 [ 287.088738][ T29] ? wq_watchdog_touch+0x72/0x110 [ 287.093755][ T29] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.099769][ T29] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 287.105740][ T29] watchdog+0xfde/0x1020 [ 287.109981][ T29] ? watchdog+0x1ea/0x1020 [ 287.114392][ T29] ? __pfx_watchdog+0x10/0x10 [ 287.119062][ T29] kthread+0x2f0/0x390 [ 287.123128][ T29] ? __pfx_watchdog+0x10/0x10 [ 287.127810][ T29] ? __pfx_kthread+0x10/0x10 [ 287.132403][ T29] ret_from_fork+0x4b/0x80 [ 287.136855][ T29] ? __pfx_kthread+0x10/0x10 [ 287.141439][ T29] ret_from_fork_asm+0x1a/0x30 [ 287.146223][ T29] [ 287.149336][ T29] Sending NMI from CPU 1 to CPUs 0: [ 287.154642][ C0] NMI backtrace for cpu 0 [ 287.154653][ C0] CPU: 0 PID: 34 Comm: kworker/u8:2 Not tainted 6.9.0-rc6-syzkaller-00053-g0106679839f7 #0 [ 287.154670][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 287.154680][ C0] Workqueue: events_unbound toggle_allocation_gate [ 287.154703][ C0] RIP: 0010:__lock_acquire+0xf21/0x1fd0 [ 287.154721][ C0] Code: 00 8b 1b 81 e3 ff 1f 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 00 e5 ef 92 be 08 00 00 00 e8 a7 c0 84 00 48 0f a3 1d 0f 42 7d 11 <0f> 83 56 02 00 00 48 69 c3 c8 00 00 00 48 8d 98 00 44 be 92 48 bf [ 287.154734][ C0] RSP: 0018:ffffc90000aa7670 EFLAGS: 00000057 [ 287.154746][ C0] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffffffff8172a2e9 [ 287.154757][ C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff92efe500 [ 287.154766][ C0] RBP: 95a2ae43372fe09c R08: ffffffff92efe507 R09: 1ffffffff25dfca0 [ 287.154778][ C0] R10: dffffc0000000000 R11: fffffbfff25dfca1 R12: ffff8880176d5a00 [ 287.154789][ C0] R13: ffff8880176d5a00 R14: 0000000000000000 R15: ffff8880176d5a00 [ 287.154800][ C0] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 287.154813][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.154824][ C0] CR2: 00005564a1b49aa0 CR3: 000000000e134000 CR4: 00000000003506f0 [ 287.154838][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 287.154847][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 287.154857][ C0] Call Trace: [ 287.154863][ C0] [ 287.154869][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 287.154885][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 287.154902][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.154924][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 287.154942][ C0] ? nmi_handle+0x14f/0x5a0 [ 287.154974][ C0] ? nmi_handle+0x2a/0x5a0 [ 287.154990][ C0] ? __lock_acquire+0xf21/0x1fd0 [ 287.155005][ C0] ? default_do_nmi+0x63/0x160 [ 287.155021][ C0] ? exc_nmi+0x123/0x1f0 [ 287.155036][ C0] ? end_repeat_nmi+0xf/0x53 [ 287.155056][ C0] ? __lock_acquire+0xf19/0x1fd0 [ 287.155072][ C0] ? __lock_acquire+0xf21/0x1fd0 [ 287.155087][ C0] ? __lock_acquire+0xf21/0x1fd0 [ 287.155103][ C0] ? __lock_acquire+0xf21/0x1fd0 [ 287.155118][ C0] [ 287.155123][ C0] [ 287.155135][ C0] lock_acquire+0x1ed/0x550 [ 287.155149][ C0] ? arch_jump_label_transform_queue+0x5d/0x100 [ 287.155172][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 287.155188][ C0] ? __pfx___might_resched+0x10/0x10 [ 287.155207][ C0] ? arch_jump_label_transform_queue+0x9b/0x100 [ 287.155226][ C0] ? __pfx_lock_release+0x10/0x10 [ 287.155242][ C0] ? insn_decode+0x2c6/0x4c0 [ 287.155261][ C0] __mutex_lock+0x136/0xd70 [ 287.155276][ C0] ? arch_jump_label_transform_queue+0x5d/0x100 [ 287.155296][ C0] ? __mutex_unlock_slowpath+0x21d/0x750 [ 287.155311][ C0] ? __pfx_text_poke_loc_init+0x10/0x10 [ 287.155329][ C0] ? arch_jump_label_transform_queue+0x5d/0x100 [ 287.155349][ C0] ? __pfx___mutex_lock+0x10/0x10 [ 287.155365][ C0] ? static_key_disable_cpuslocked+0x9b/0x1c0 [ 287.155394][ C0] ? text_poke_queue+0x12c/0x180 [ 287.155410][ C0] arch_jump_label_transform_queue+0x5d/0x100 [ 287.155431][ C0] __jump_label_update+0x177/0x3a0 [ 287.155450][ C0] ? process_scheduled_works+0x91b/0x17c0 [ 287.155466][ C0] static_key_disable_cpuslocked+0xce/0x1c0 [ 287.155484][ C0] static_key_disable+0x1a/0x20 [ 287.155500][ C0] toggle_allocation_gate+0x1b8/0x250 [ 287.155518][ C0] ? __pfx_toggle_allocation_gate+0x10/0x10 [ 287.155536][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 287.155562][ C0] process_scheduled_works+0xa10/0x17c0 [ 287.155589][ C0] ? __pfx_process_scheduled_works+0x10/0x10 [ 287.155608][ C0] ? assign_work+0x364/0x3d0 [ 287.155624][ C0] worker_thread+0x86d/0xd70 [ 287.155646][ C0] ? __kthread_parkme+0x169/0x1d0 [ 287.155664][ C0] ? __pfx_worker_thread+0x10/0x10 [ 287.155679][ C0] kthread+0x2f0/0x390 [ 287.155696][ C0] ? __pfx_worker_thread+0x10/0x10 [ 287.155711][ C0] ? __pfx_kthread+0x10/0x10 [ 287.155728][ C0] ret_from_fork+0x4b/0x80 [ 287.155747][ C0] ? __pfx_kthread+0x10/0x10 [ 287.155764][ C0] ret_from_fork_asm+0x1a/0x30 [ 287.155789][ C0] [ 287.155795][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.154 msecs [ 287.156676][ T29] Kernel panic - not syncing: hung_task: blocked tasks [ 287.580293][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc6-syzkaller-00053-g0106679839f7 #0 [ 287.590085][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 287.600147][ T29] Call Trace: [ 287.603425][ T29] [ 287.606355][ T29] dump_stack_lvl+0x241/0x360 [ 287.611038][ T29] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.616248][ T29] ? __pfx__printk+0x10/0x10 [ 287.620853][ T29] ? vscnprintf+0x5d/0x90 [ 287.625179][ T29] panic+0x349/0x860 [ 287.629165][ T29] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 287.635317][ T29] ? __pfx_panic+0x10/0x10 [ 287.639732][ T29] ? nmi_backtrace_stall_check+0x431/0x440 [ 287.645534][ T29] ? preempt_schedule_thunk+0x1a/0x30 [ 287.650902][ T29] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 287.657049][ T29] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320 [ 287.663198][ T29] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320 [ 287.669343][ T29] watchdog+0x101d/0x1020 [ 287.673666][ T29] ? watchdog+0x1ea/0x1020 [ 287.678073][ T29] ? __pfx_watchdog+0x10/0x10 [ 287.682738][ T29] kthread+0x2f0/0x390 [ 287.686805][ T29] ? __pfx_watchdog+0x10/0x10 [ 287.691468][ T29] ? __pfx_kthread+0x10/0x10 [ 287.696049][ T29] ret_from_fork+0x4b/0x80 [ 287.700460][ T29] ? __pfx_kthread+0x10/0x10 [ 287.705041][ T29] ret_from_fork_asm+0x1a/0x30 [ 287.709807][ T29] [ 287.713102][ T29] Kernel Offset: disabled [ 287.717411][ T29] Rebooting in 86400 seconds..