./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1370431204 <...> Warning: Permanently added '10.128.1.92' (ED25519) to the list of known hosts. execve("./syz-executor1370431204", ["./syz-executor1370431204"], 0x7ffc2ceb2060 /* 10 vars */) = 0 brk(NULL) = 0x55556e1c9000 brk(0x55556e1c9d00) = 0x55556e1c9d00 arch_prctl(ARCH_SET_FS, 0x55556e1c9380) = 0 set_tid_address(0x55556e1c9650) = 5868 set_robust_list(0x55556e1c9660, 24) = 0 rseq(0x55556e1c9ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1370431204", 4096) = 28 getrandom("\x75\xff\x5b\x65\xc8\xb8\x7d\x5b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556e1c9d00 brk(0x55556e1ead00) = 0x55556e1ead00 brk(0x55556e1eb000) = 0x55556e1eb000 mprotect(0x7f5272cf0000, 16384, 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 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5869 attached [pid 5869] set_robust_list(0x55556e1c9660, 24) = 0 [pid 5868] <... clone resumed>, child_tidptr=0x55556e1c9650) = 5869 [pid 5869] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5869] setpgid(0, 0) = 0 [pid 5869] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "1000", 4) = 4 [pid 5869] close(3) = 0 executing program [pid 5869] write(1, "executing program\n", 18) = 18 [pid 5869] memfd_create("syzkaller", 0) = 3 [pid 5869] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f526a600000 [pid 5869] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5869] munmap(0x7f526a600000, 138412032) = 0 [pid 5869] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5869] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5869] close(3) = 0 [pid 5869] close(4) = 0 [pid 5869] mkdir("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 0777) = 0 [ 123.540122][ T5869] loop0: detected capacity change from 0 to 32768 [ 123.574967][ T5869] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 123.583314][ T5869] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 123.634231][ T5869] gfs2: fsid=syz:syz.0: journal 0 mapped with 11 extents in 0ms [ 123.646291][ T9] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 123.653206][ T9] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 123.669219][ T9] kworker/0:0: attempt to access beyond end of device [ 123.669219][ T9] loop0: rw=0, sector=524460, nr_sectors = 2 limit=32768 [ 123.683046][ T9] kworker/0:0: attempt to access beyond end of device [ 123.683046][ T9] loop0: rw=0, sector=524462, nr_sectors = 2 limit=32768 [ 123.696780][ T9] kworker/0:0: attempt to access beyond end of device [ 123.696780][ T9] loop0: rw=0, sector=524464, nr_sectors = 2 limit=32768 [ 123.710732][ T9] kworker/0:0: attempt to access beyond end of device [ 123.710732][ T9] loop0: rw=0, sector=524466, nr_sectors = 2 limit=32768 [pid 5869] mount("/dev/loop0", "./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "gfs2", MS_NODEV|MS_DIRSYNC|MS_I_VERSION|MS_STRICTATIME, "" [pid 5868] kill(-5869, SIGKILL) = 0 [pid 5868] kill(5869, SIGKILL) = 0 [pid 5868] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5868] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5868] getdents64(3, 0x55556e1ca6f0 /* 2 entries */, 32768) = 48 [pid 5868] getdents64(3, 0x55556e1ca6f0 /* 0 entries */, 32768) = 0 [pid 5868] close(3) = 0 [ 286.494633][ T31] INFO: task kworker/0:0:9 blocked for more than 143 seconds. [ 286.502169][ T31] Not tainted 6.16.0-rc6-next-20250714-syzkaller #0 [ 286.509387][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.518311][ T31] task:kworker/0:0 state:D stack:25816 pid:9 tgid:9 ppid:2 task_flags:0x4208060 flags:0x00004000 [ 286.530974][ T31] Workqueue: gfs2_recovery gfs2_recover_func [ 286.537077][ T31] Call Trace: [ 286.540397][ T31] [ 286.543349][ T31] __schedule+0x16f5/0x4d00 [ 286.547955][ T31] ? schedule+0x165/0x360 [ 286.552371][ T31] ? __pfx___schedule+0x10/0x10 [ 286.557303][ T31] ? schedule+0x91/0x360 [ 286.561588][ T31] schedule+0x165/0x360 [ 286.565824][ T31] io_schedule+0x80/0xd0 [ 286.570102][ T31] folio_wait_bit_common+0x6b0/0xb90 [ 286.575466][ T31] ? __pfx_folio_wait_bit_common+0x10/0x10 [ 286.581391][ T31] ? seqcount_lockdep_reader_access+0x175/0x1c0 [ 286.587694][ T31] ? __pfx_wake_page_function+0x10/0x10 [ 286.593293][ T31] ? __filemap_get_folio+0x79f/0xaf0 [ 286.598743][ T31] gfs2_jhead_process_page+0x16e/0x650 [ 286.604242][ T31] ? __pfx_gfs2_jhead_process_page+0x10/0x10 [ 286.610367][ T31] gfs2_find_jhead+0xc9e/0xe10 [ 286.615252][ T31] gfs2_recover_func+0x643/0x1dc0 [ 286.620302][ T31] ? ret_from_fork_asm+0x1a/0x30 [ 286.625323][ T31] ? stack_trace_save+0x9c/0xe0 [ 286.630267][ T31] ? check_path+0x21/0x40 [ 286.634653][ T31] ? __pfx_gfs2_recover_func+0x10/0x10 [ 286.640152][ T31] ? lockdep_unlock+0x89/0x120 [ 286.644994][ T31] ? validate_chain+0x897/0x2140 [ 286.650083][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.655014][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.660235][ T31] ? process_scheduled_works+0x9ef/0x17b0 [ 286.666222][ T31] ? process_scheduled_works+0x9ef/0x17b0 [ 286.671999][ T31] process_scheduled_works+0xae1/0x17b0 [ 286.677725][ T31] ? __pfx_process_scheduled_works+0x10/0x10 [ 286.683755][ T31] worker_thread+0x8a0/0xda0 [ 286.688553][ T31] kthread+0x70e/0x8a0 [ 286.692655][ T31] ? __pfx_worker_thread+0x10/0x10 [ 286.697822][ T31] ? __pfx_kthread+0x10/0x10 [ 286.702461][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.707739][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.712967][ T31] ? __pfx_kthread+0x10/0x10 [ 286.717619][ T31] ret_from_fork+0x3f9/0x770 [ 286.722249][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 286.727527][ T31] ? __switch_to_asm+0x39/0x70 [ 286.732322][ T31] ? __switch_to_asm+0x33/0x70 [ 286.737639][ T31] ? __pfx_kthread+0x10/0x10 [ 286.742278][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.747127][ T31] [ 286.752122][ T31] INFO: task syz-executor137:5869 blocked for more than 143 seconds. [ 286.760382][ T31] Not tainted 6.16.0-rc6-next-20250714-syzkaller #0 [ 286.767584][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.776350][ T31] task:syz-executor137 state:D stack:24376 pid:5869 tgid:5869 ppid:5868 task_flags:0x400140 flags:0x00004006 [ 286.788357][ T31] Call Trace: [ 286.791676][ T31] [ 286.794708][ T31] __schedule+0x16f5/0x4d00 [ 286.799344][ T31] ? schedule+0x165/0x360 [ 286.803690][ T31] ? __pfx___schedule+0x10/0x10 [ 286.808629][ T31] ? schedule+0x91/0x360 [ 286.812905][ T31] schedule+0x165/0x360 [ 286.817179][ T31] bit_wait+0x11/0xd0 [ 286.821209][ T31] __wait_on_bit+0xb6/0x310 [ 286.825826][ T31] ? __pfx_bit_wait+0x10/0x10 [ 286.830539][ T31] ? __pfx_bit_wait+0x10/0x10 [ 286.835374][ T31] out_of_line_wait_on_bit+0x123/0x170 [ 286.840880][ T31] ? __pfx_out_of_line_wait_on_bit+0x10/0x10 [ 286.846930][ T31] ? __pfx_wake_bit_function+0x10/0x10 [ 286.852427][ T31] ? do_raw_spin_unlock+0x122/0x240 [ 286.857696][ T31] gfs2_recover_journal+0xda/0x140 [ 286.862839][ T31] init_journal+0x17cc/0x2260 [ 286.867600][ T31] ? init_inodes+0xdb/0x320 [ 286.872236][ T31] ? __pfx_init_journal+0x10/0x10 [ 286.877329][ T31] ? snprintf+0xda/0x120 [ 286.881692][ T31] ? init_inodes+0xdb/0x320 [ 286.886296][ T31] ? __pfx_snprintf+0x10/0x10 [ 286.891002][ T31] ? gfs2_glock_nq_num+0x13d/0x170 [ 286.896172][ T31] init_inodes+0xdb/0x320 [ 286.900621][ T31] gfs2_fill_super+0x1923/0x20d0 [ 286.905640][ T31] ? __pfx_gfs2_fill_super+0x10/0x10 [ 286.911047][ T31] ? init_locking+0xb8/0x210 [ 286.915709][ T31] ? sb_set_blocksize+0x104/0x180 [ 286.920781][ T31] ? setup_bdev_super+0x4c1/0x5b0 [ 286.925892][ T31] get_tree_bdev_flags+0x40b/0x4d0 [ 286.931028][ T31] ? __pfx_gfs2_fill_super+0x10/0x10 [ 286.936363][ T31] ? __pfx_get_tree_bdev_flags+0x10/0x10 [ 286.942029][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.946874][ T31] gfs2_get_tree+0x51/0x1e0 [ 286.951410][ T31] vfs_get_tree+0x8f/0x2b0 [ 286.955898][ T31] do_new_mount+0x2a2/0x9e0 [ 286.960442][ T31] ? ns_capable+0x8a/0xf0 [ 286.964832][ T31] ? __pfx_do_new_mount+0x10/0x10 [ 286.969891][ T31] ? path_mount+0x61c/0xfe0 [ 286.974459][ T31] ? user_path_at+0x44/0x60 [ 286.978994][ T31] __se_sys_mount+0x317/0x410 [ 286.983722][ T31] ? __pfx___se_sys_mount+0x10/0x10 [ 286.989004][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.993806][ T31] ? __x64_sys_mount+0x20/0xc0 [ 286.998637][ T31] do_syscall_64+0xfa/0x3b0 [ 287.003195][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.008465][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.014596][ T31] ? clear_bhb_loop+0x60/0xb0 [ 287.019297][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.025288][ T31] RIP: 0033:0x7f5272c46dea [ 287.029742][ T31] RSP: 002b:00007ffc7412dfc8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 287.038257][ T31] RAX: ffffffffffffffda RBX: 00007ffc7412dfe0 RCX: 00007f5272c46dea [ 287.046424][ T31] RDX: 0000200000037f40 RSI: 0000200000000340 RDI: 00007ffc7412dfe0 [ 287.054495][ T31] RBP: 0000200000000340 R08: 00007ffc7412e020 R09: 0000000000038004 [ 287.062498][ T31] R10: 0000000001800084 R11: 0000000000000282 R12: 0000200000037f40 [ 287.070530][ T31] R13: 00007ffc7412e020 R14: 0000000000000003 R15: 0000000001800084 [ 287.078662][ T31] [ 287.081758][ T31] [ 287.081758][ T31] Showing all locks held in the system: [ 287.089607][ T31] 2 locks held by kworker/0:0/9: [ 287.094592][ T31] #0: ffff88801dfbbd48 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 [ 287.106241][ T31] #1: ffffc900000e7bc0 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 [ 287.118190][ T31] 1 lock held by khungtaskd/31: [ 287.123055][ T31] #0: ffffffff8e13eca0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 287.133010][ T31] 2 locks held by getty/5603: [ 287.137745][ T31] #0: ffff888033b920a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 287.147552][ T31] #1: ffffc900036bb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 287.157745][ T31] 1 lock held by syz-executor137/5869: [ 287.163218][ T31] #0: ffff88807947c0e0 (&type->s_umount_key#41/1){+.+.}-{4:4}, at: alloc_super+0x204/0x970 [ 287.173494][ T31] [ 287.175869][ T31] ============================================= [ 287.175869][ T31] [ 287.184294][ T31] NMI backtrace for cpu 1 [ 287.184320][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250714-syzkaller #0 PREEMPT(full) [ 287.184341][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.184353][ T31] Call Trace: [ 287.184362][ T31] [ 287.184378][ T31] dump_stack_lvl+0x189/0x250 [ 287.184407][ T31] ? __wake_up_klogd+0xd9/0x110 [ 287.184435][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.184456][ T31] ? __pfx__printk+0x10/0x10 [ 287.184497][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 287.184520][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.184544][ T31] ? _printk+0xcf/0x120 [ 287.184572][ T31] ? __pfx__printk+0x10/0x10 [ 287.184595][ T31] ? debug_show_all_locks+0x2e/0x180 [ 287.184614][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.184640][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 287.184660][ T31] watchdog+0xfee/0x1030 [ 287.184684][ T31] ? watchdog+0x1de/0x1030 [ 287.184713][ T31] kthread+0x70e/0x8a0 [ 287.184736][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.184758][ T31] ? __pfx_kthread+0x10/0x10 [ 287.184779][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.184798][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.184817][ T31] ? __pfx_kthread+0x10/0x10 [ 287.184838][ T31] ret_from_fork+0x3f9/0x770 [ 287.184855][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.184876][ T31] ? __switch_to_asm+0x39/0x70 [ 287.184895][ T31] ? __switch_to_asm+0x33/0x70 [ 287.184914][ T31] ? __pfx_kthread+0x10/0x10 [ 287.184934][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.184967][ T31] [ 287.342177][ T31] Sending NMI from CPU 1 to CPUs 0: [ 287.347517][ C0] NMI backtrace for cpu 0 [ 287.347534][ C0] CPU: 0 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted 6.16.0-rc6-next-20250714-syzkaller #0 PREEMPT(full) [ 287.347555][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.347566][ C0] Workqueue: events_unbound toggle_allocation_gate [ 287.347595][ C0] RIP: 0010:validate_chain+0xaa/0x2140 [ 287.347616][ C0] Code: 4c 98 e5 ff 90 0f 0b 90 90 90 48 bb eb 83 b5 80 46 86 c8 61 49 0f af df 48 c1 eb 2d 48 8b 04 dd 60 e3 66 93 48 85 c0 0f 94 c1 <48> 83 c0 f8 0f 94 c2 08 ca 0f 84 24 01 00 00 e8 e2 9b ff ff 83 3d [ 287.347630][ C0] RSP: 0018:ffffc90000127578 EFLAGS: 00000082 [ 287.347644][ C0] RAX: ffffffff93ab2538 RBX: 000000000002190d RCX: 0000000000040000 [ 287.347656][ C0] RDX: 0000000000000000 RSI: ffff88801ce98b90 RDI: ffff88801ce98000 [ 287.347667][ C0] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff81663e17 [ 287.347678][ C0] R10: ffffc900001278a0 R11: fffff52000024f19 R12: 0000000000000000 [ 287.347689][ C0] R13: ffff88801ce98af0 R14: ffff88801ce98b90 R15: 2e80fe47533fa5b5 [ 287.347702][ C0] FS: 0000000000000000(0000) GS:ffff888125bed000(0000) knlGS:0000000000000000 [ 287.347716][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.347727][ C0] CR2: 000056106acbb660 CR3: 000000000df38000 CR4: 00000000003526f0 [ 287.347743][ C0] Call Trace: [ 287.347750][ C0] [ 287.347763][ C0] ? insn_get_modrm+0x48c/0x750 [ 287.347789][ C0] __lock_acquire+0xab9/0xd20 [ 287.347808][ C0] ? arch_jump_label_transform_apply+0x17/0x30 [ 287.347833][ C0] lock_acquire+0x120/0x360 [ 287.347848][ C0] ? arch_jump_label_transform_apply+0x17/0x30 [ 287.347880][ C0] __mutex_lock+0x182/0xe80 [ 287.347902][ C0] ? arch_jump_label_transform_apply+0x17/0x30 [ 287.347930][ C0] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 287.347953][ C0] ? arch_jump_label_transform_apply+0x17/0x30 [ 287.347980][ C0] ? __pfx___mutex_lock+0x10/0x10 [ 287.348004][ C0] ? arch_jump_label_transform_queue+0x97/0x110 [ 287.348034][ C0] arch_jump_label_transform_apply+0x17/0x30 [ 287.348059][ C0] static_key_disable_cpuslocked+0xc5/0x1b0 [ 287.348084][ C0] static_key_disable+0x1a/0x20 [ 287.348105][ C0] toggle_allocation_gate+0x1a1/0x240 [ 287.348127][ C0] ? __pfx_toggle_allocation_gate+0x10/0x10 [ 287.348148][ C0] ? process_scheduled_works+0x9ef/0x17b0 [ 287.348232][ C0] ? process_scheduled_works+0x9ef/0x17b0 [ 287.348251][ C0] ? process_scheduled_works+0x9ef/0x17b0 [ 287.348270][ C0] process_scheduled_works+0xae1/0x17b0 [ 287.348304][ C0] ? __pfx_process_scheduled_works+0x10/0x10 [ 287.348331][ C0] worker_thread+0x8a0/0xda0 [ 287.348363][ C0] kthread+0x70e/0x8a0 [ 287.348410][ C0] ? __pfx_worker_thread+0x10/0x10 [ 287.348429][ C0] ? __pfx_kthread+0x10/0x10 [ 287.348453][ C0] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.348476][ C0] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.348498][ C0] ? __pfx_kthread+0x10/0x10 [ 287.348522][ C0] ret_from_fork+0x3f9/0x770 [ 287.348541][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 287.348562][ C0] ? __switch_to_asm+0x39/0x70 [ 287.348585][ C0] ? __switch_to_asm+0x33/0x70 [ 287.348608][ C0] ? __pfx_kthread+0x10/0x10 [ 287.348631][ C0] ret_from_fork_asm+0x1a/0x30 [ 287.348663][ C0] [ 287.348673][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.156 msecs [ 287.349530][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 287.680761][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250714-syzkaller #0 PREEMPT(full) [ 287.692057][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.702141][ T31] Call Trace: [ 287.705426][ T31] [ 287.708365][ T31] dump_stack_lvl+0x99/0x250 [ 287.712966][ T31] ? __asan_memcpy+0x40/0x70 [ 287.717565][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.722862][ T31] ? __pfx__printk+0x10/0x10 [ 287.727471][ T31] vpanic+0x281/0x750 [ 287.731465][ T31] ? __pfx_vpanic+0x10/0x10 [ 287.736669][ T31] ? tick_nohz_tick_stopped+0x86/0xb0 [ 287.742060][ T31] ? __irq_work_queue_local+0x1de/0x550 [ 287.747798][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.753028][ T31] panic+0xb9/0xc0 [ 287.756785][ T31] ? __pfx_panic+0x10/0x10 [ 287.761226][ T31] ? irq_work_queue+0xbc/0x140 [ 287.766018][ T31] ? nmi_trigger_cpumask_backtrace+0x234/0x300 [ 287.772193][ T31] watchdog+0x102d/0x1030 [ 287.776557][ T31] ? watchdog+0x1de/0x1030 [ 287.781006][ T31] kthread+0x70e/0x8a0 [ 287.785147][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.789873][ T31] ? __pfx_kthread+0x10/0x10 [ 287.794498][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.799731][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.804953][ T31] ? __pfx_kthread+0x10/0x10 [ 287.809572][ T31] ret_from_fork+0x3f9/0x770 [ 287.814188][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.819320][ T31] ? __switch_to_asm+0x39/0x70 [ 287.824141][ T31] ? __switch_to_asm+0x33/0x70 [ 287.828926][ T31] ? __pfx_kthread+0x10/0x10 [ 287.833529][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.838317][ T31] [ 287.841789][ T31] Kernel Offset: disabled [ 287.846132][ T31] Rebooting in 86400 seconds..