./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2464338130 <...> Warning: Permanently added '10.128.1.183' (ED25519) to the list of known hosts. execve("./syz-executor2464338130", ["./syz-executor2464338130"], 0x7fff86774d40 /* 10 vars */) = 0 brk(NULL) = 0x555557394000 brk(0x555557394d00) = 0x555557394d00 arch_prctl(ARCH_SET_FS, 0x555557394380) = 0 set_tid_address(0x555557394650) = 5052 set_robust_list(0x555557394660, 24) = 0 rseq(0x555557394ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2464338130", 4096) = 28 getrandom("\xc0\x75\x43\xd3\x4f\xfd\x14\xd4", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555557394d00 brk(0x5555573b5d00) = 0x5555573b5d00 brk(0x5555573b6000) = 0x5555573b6000 mprotect(0x7f1c517ed000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 openat(AT_FDCWD, "/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 5053 attached , child_tidptr=0x555557394650) = 5053 [pid 5053] set_robust_list(0x555557394660, 24) = 0 [pid 5053] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5053] setpgid(0, 0) = 0 [pid 5053] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5053] write(3, "1000", 4) = 4 [pid 5053] close(3) = 0 [pid 5053] memfd_create("syzkaller", 0) = 3 [pid 5053] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1c49200000 [pid 5053] 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 5053] munmap(0x7f1c49200000, 138412032) = 0 [pid 5053] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5053] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5053] close(3) = 0 [pid 5053] close(4) = 0 [pid 5053] mkdir("./file0", 0777) = 0 [ 76.370523][ T5053] loop0: detected capacity change from 0 to 32768 [ 76.405623][ T5053] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 76.414887][ T5053] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 76.455983][ T5053] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms [ 76.465969][ T8] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 76.473187][ T8] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [pid 5053] mount("/dev/loop0", "./file0", "gfs2", MS_REC, "" [pid 5052] kill(-5053, SIGKILL) = 0 [pid 5052] kill(5053, SIGKILL) = 0 [pid 5052] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5052] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5052] getdents64(3, 0x5555573956f0 /* 2 entries */, 32768) = 48 [pid 5052] getdents64(3, 0x5555573956f0 /* 0 entries */, 32768) = 0 [pid 5052] close(3) = 0 [ 87.004771][ T23] cfg80211: failed to load regulatory.db [ 286.682633][ T29] INFO: task kworker/0:0:8 blocked for more than 143 seconds. [ 286.690224][ T29] Not tainted 6.8.0-rc1-syzkaller-00169-gecb1b8288dc7 #0 [ 286.697881][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.706625][ T29] task:kworker/0:0 state:D stack:24336 pid:8 tgid:8 ppid:2 flags:0x00004000 [ 286.716929][ T29] Workqueue: gfs2_recovery gfs2_recover_func [ 286.723085][ T29] Call Trace: [ 286.726375][ T29] [ 286.729307][ T29] __schedule+0x177f/0x4960 [ 286.734032][ T29] ? release_firmware_map_entry+0x190/0x190 [ 286.739970][ T29] ? __lock_acquire+0x1fd0/0x1fd0 [ 286.745148][ T29] ? schedule+0x8e/0x260 [ 286.749425][ T29] ? wq_worker_sleeping+0x66/0x240 [ 286.754723][ T29] ? print_irqtrace_events+0x220/0x220 [ 286.760211][ T29] ? schedule+0x8e/0x260 [ 286.764567][ T29] schedule+0x149/0x260 [ 286.768781][ T29] io_schedule+0x8c/0x100 [ 286.773189][ T29] folio_wait_bit_common+0x881/0x12b0 [ 286.778628][ T29] ? folio_wait_bit+0x30/0x30 [ 286.783381][ T29] ? _compound_head+0x120/0x120 [ 286.788273][ T29] ? __filemap_get_folio+0x72d/0xbb0 [ 286.793670][ T29] gfs2_jhead_process_page+0x194/0x750 [ 286.799165][ T29] ? gfs2_end_log_read+0x580/0x580 [ 286.804350][ T29] ? submit_bio_noacct+0x1007/0x1c20 [ 286.809717][ T29] gfs2_find_jhead+0xd68/0xf10 [ 286.814597][ T29] ? gfs2_end_log_write+0x8a0/0x8a0 [ 286.819827][ T29] ? gfs2_jdesc_check+0x1f6/0x290 [ 286.824942][ T29] gfs2_recover_func+0x6b7/0x1f10 [ 286.830025][ T29] ? lockdep_unlock+0x169/0x300 [ 286.835096][ T29] ? __get_log_header+0x4e0/0x4e0 [ 286.840255][ T29] ? mark_lock+0x2a0/0x350 [ 286.844807][ T29] ? __lock_acquire+0x1345/0x1fd0 [ 286.849905][ T29] ? lockdep_hardirqs_on_prepare+0x43c/0x780 [ 286.856054][ T29] ? process_scheduled_works+0x825/0x1420 [ 286.861812][ T29] process_scheduled_works+0x90f/0x1420 [ 286.867484][ T29] ? assign_work+0x3d0/0x3d0 [ 286.872113][ T29] ? assign_work+0x364/0x3d0 [ 286.876803][ T29] worker_thread+0xa5f/0x1000 [ 286.881525][ T29] kthread+0x2d3/0x370 [ 286.885658][ T29] ? pr_cont_work+0x5e0/0x5e0 [ 286.890362][ T29] ? kthread_blkcg+0xd0/0xd0 [ 286.895058][ T29] ret_from_fork+0x48/0x80 [ 286.899526][ T29] ? kthread_blkcg+0xd0/0xd0 [ 286.904199][ T29] ret_from_fork_asm+0x11/0x20 [ 286.909039][ T29] [ 286.912124][ T29] INFO: task syz-executor246:5053 blocked for more than 143 seconds. [ 286.920299][ T29] Not tainted 6.8.0-rc1-syzkaller-00169-gecb1b8288dc7 #0 [ 286.927913][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.936654][ T29] task:syz-executor246 state:D stack:23408 pid:5053 tgid:5053 ppid:5052 flags:0x00004006 [ 286.946891][ T29] Call Trace: [ 286.950173][ T29] [ 286.953175][ T29] __schedule+0x177f/0x4960 [ 286.957770][ T29] ? release_firmware_map_entry+0x190/0x190 [ 286.963753][ T29] ? __lock_acquire+0x1fd0/0x1fd0 [ 286.968818][ T29] ? preempt_schedule_thunk+0x1a/0x30 [ 286.974321][ T29] ? _raw_spin_unlock_irqrestore+0x12c/0x140 [ 286.980334][ T29] ? schedule+0x8e/0x260 [ 286.984657][ T29] schedule+0x149/0x260 [ 286.988846][ T29] bit_wait+0x12/0xc0 [ 286.992910][ T29] __wait_on_bit+0xac/0x2e0 [ 286.997439][ T29] ? out_of_line_wait_on_bit_lock+0x250/0x250 [ 287.003592][ T29] out_of_line_wait_on_bit+0x1d4/0x250 [ 287.009091][ T29] ? out_of_line_wait_on_bit_lock+0x250/0x250 [ 287.015308][ T29] ? __wait_on_bit+0x2e0/0x2e0 [ 287.020112][ T29] ? bit_waitqueue+0x30/0x30 [ 287.024768][ T29] ? do_raw_spin_unlock+0x13b/0x8b0 [ 287.030013][ T29] ? gfs2_journal_wipe+0x8f0/0x8f0 [ 287.035238][ T29] gfs2_recover_journal+0xf2/0x150 [ 287.040404][ T29] init_journal+0x1841/0x23f0 [ 287.045164][ T29] ? init_inodes+0xdc/0x310 [ 287.049691][ T29] ? _compound_head+0x120/0x120 [ 287.054619][ T29] ? init_sb+0xc37/0x1330 [ 287.058972][ T29] ? snprintf+0xda/0x120 [ 287.063323][ T29] ? init_inodes+0xdc/0x310 [ 287.067862][ T29] ? vscnprintf+0x80/0x80 [ 287.072201][ T29] init_inodes+0xdc/0x310 [ 287.076634][ T29] gfs2_fill_super+0x1ece/0x26b0 [ 287.081611][ T29] ? gfs2_reconfigure+0xbb0/0xbb0 [ 287.086714][ T29] ? snprintf+0xda/0x120 [ 287.090983][ T29] ? __lock_acquire+0x1fd0/0x1fd0 [ 287.096131][ T29] ? do_raw_spin_lock+0x14e/0x370 [ 287.101228][ T29] ? vscnprintf+0x80/0x80 [ 287.105639][ T29] ? set_blocksize+0x1df/0x380 [ 287.110455][ T29] ? init_locking+0xbd/0x210 [ 287.115238][ T29] ? sb_set_blocksize+0x99/0x100 [ 287.120216][ T29] ? setup_bdev_super+0x4c8/0x5c0 [ 287.125354][ T29] get_tree_bdev+0x3f3/0x560 [ 287.129976][ T29] ? gfs2_reconfigure+0xbb0/0xbb0 [ 287.135099][ T29] ? setup_bdev_super+0x5c0/0x5c0 [ 287.140181][ T29] ? vfs_parse_fs_param+0x410/0x410 [ 287.145446][ T29] gfs2_get_tree+0x54/0x210 [ 287.149973][ T29] ? bpf_lsm_capable+0x9/0x10 [ 287.154753][ T29] vfs_get_tree+0x8c/0x2a0 [ 287.159225][ T29] do_new_mount+0x2be/0xb40 [ 287.163908][ T29] ? ns_capable+0x89/0xe0 [ 287.168275][ T29] ? do_move_mount_old+0x170/0x170 [ 287.173477][ T29] __se_sys_mount+0x2d9/0x3c0 [ 287.178189][ T29] ? __x64_sys_mount+0xc0/0xc0 [ 287.183025][ T29] ? do_syscall_64+0x102/0x230 [ 287.187889][ T29] ? __x64_sys_mount+0x20/0xc0 [ 287.192764][ T29] do_syscall_64+0xf5/0x230 [ 287.197313][ T29] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 287.203390][ T29] RIP: 0033:0x7f1c51743daa [ 287.207829][ T29] RSP: 002b:00007ffcb747e468 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 287.216371][ T29] RAX: ffffffffffffffda RBX: 00007ffcb747e480 RCX: 00007f1c51743daa [ 287.224441][ T29] RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007ffcb747e480 [ 287.232672][ T29] RBP: 0000000000000004 R08: 00007ffcb747e4c0 R09: 0000000000037f50 [ 287.240701][ T29] R10: 0000000000004000 R11: 0000000000000282 R12: 0000000000004000 [ 287.248739][ T29] R13: 00007ffcb747e4c0 R14: 0000000000000003 R15: 0000000001000000 [ 287.256899][ T29] [ 287.259963][ T29] [ 287.259963][ T29] Showing all locks held in the system: [ 287.268767][ T29] 2 locks held by kworker/0:0/8: [ 287.273790][ T29] #0: ffff888018f45d38 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 [ 287.285448][ T29] #1: ffffc900000d7d20 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 [ 287.297389][ T29] 1 lock held by khungtaskd/29: [ 287.302239][ T29] #0: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 287.312178][ T29] 2 locks held by getty/4804: [ 287.316940][ T29] #0: ffff888029cde0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 287.326790][ T29] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 [ 287.337011][ T29] 1 lock held by syz-executor246/5053: [ 287.343066][ T29] #0: ffff8880233ea0e0 (&type->s_umount_key#42/1){+.+.}-{3:3}, at: alloc_super+0x20e/0x8f0 [ 287.353289][ T29] [ 287.355610][ T29] ============================================= [ 287.355610][ T29] [ 287.364089][ T29] NMI backtrace for cpu 0 [ 287.368427][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc1-syzkaller-00169-gecb1b8288dc7 #0 [ 287.378233][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 287.388297][ T29] Call Trace: [ 287.391582][ T29] [ 287.394522][ T29] dump_stack_lvl+0x1e7/0x2d0 [ 287.399222][ T29] ? tcp_gro_dev_warn+0x260/0x260 [ 287.404348][ T29] ? panic+0x850/0x850 [ 287.408423][ T29] ? vprintk_emit+0x607/0x720 [ 287.413112][ T29] ? printk_sprint+0x480/0x480 [ 287.417893][ T29] nmi_cpu_backtrace+0x498/0x4d0 [ 287.422851][ T29] ? nmi_trigger_cpumask_backtrace+0x310/0x310 [ 287.429017][ T29] ? _printk+0xd5/0x120 [ 287.433175][ T29] ? panic+0x850/0x850 [ 287.437248][ T29] ? __wake_up_klogd+0xcc/0x100 [ 287.442110][ T29] ? panic+0x850/0x850 [ 287.446189][ T29] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 287.452287][ T29] nmi_trigger_cpumask_backtrace+0x198/0x310 [ 287.458302][ T29] watchdog+0xfaf/0xff0 [ 287.462500][ T29] ? watchdog+0x1e9/0xff0 [ 287.466865][ T29] kthread+0x2d3/0x370 [ 287.470943][ T29] ? hungtask_pm_notify+0x90/0x90 [ 287.475974][ T29] ? kthread_blkcg+0xd0/0xd0 [ 287.480571][ T29] ret_from_fork+0x48/0x80 [ 287.484995][ T29] ? kthread_blkcg+0xd0/0xd0 [ 287.489600][ T29] ret_from_fork_asm+0x11/0x20 [ 287.494396][ T29] [ 287.497557][ T29] Sending NMI from CPU 0 to CPUs 1: [ 287.502839][ C1] NMI backtrace for cpu 1 [ 287.502848][ C1] CPU: 1 PID: 11 Comm: kworker/u4:0 Not tainted 6.8.0-rc1-syzkaller-00169-gecb1b8288dc7 #0 [ 287.502864][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 287.502873][ C1] Workqueue: events_unbound toggle_allocation_gate [ 287.502911][ C1] RIP: 0010:__lock_acquire+0x35c/0x1fd0 [ 287.502933][ C1] Code: 4b 7e 00 4c 8b 44 24 08 48 be 00 00 00 00 00 fc ff df 48 89 2b 48 8b 6c 24 28 49 8d 5c e8 10 48 89 d8 48 c1 e8 03 80 3c 30 00 <74> 17 48 89 df e8 0a 4b 7e 00 4c 8b 44 24 08 48 be 00 00 00 00 00 [ 287.502945][ C1] RSP: 0018:ffffc90000107410 EFLAGS: 00000046 [ 287.502956][ C1] RAX: 1ffff11002ada8e8 RBX: ffff8880156d4740 RCX: ffffffff925f0303 [ 287.502968][ C1] RDX: 0000000000000006 RSI: dffffc0000000000 RDI: 0000000000000033 [ 287.502977][ C1] RBP: 000000000000001e R08: ffff8880156d4640 R09: 0000000000000000 [ 287.502987][ C1] R10: dffffc0000000000 R11: fffffbfff1e0475e R12: ffff8880130770a8 [ 287.502998][ C1] R13: 0000000000000033 R14: 000000000000001e R15: 0000000000000000 [ 287.503007][ C1] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 287.503020][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.503030][ C1] CR2: 00005562c17ff680 CR3: 000000000d732000 CR4: 00000000003506f0 [ 287.503043][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 287.503052][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 287.503061][ C1] Call Trace: [ 287.503066][ C1] [ 287.503071][ C1] ? nmi_cpu_backtrace+0x3be/0x4d0 [ 287.503095][ C1] ? read_lock_is_recursive+0x20/0x20 [ 287.503115][ C1] ? nmi_trigger_cpumask_backtrace+0x310/0x310 [ 287.503146][ C1] ? nmi_cpu_backtrace_handler+0xc/0x10 [ 287.503166][ C1] ? nmi_handle+0x14c/0x570 [ 287.503185][ C1] ? nmi_handle+0x2a/0x570 [ 287.503204][ C1] ? __lock_acquire+0x35c/0x1fd0 [ 287.503221][ C1] ? default_do_nmi+0x63/0x150 [ 287.503244][ C1] ? exc_nmi+0x121/0x210 [ 287.503265][ C1] ? end_repeat_nmi+0xf/0x2a [ 287.503288][ C1] ? __lock_acquire+0x35c/0x1fd0 [ 287.503306][ C1] ? __lock_acquire+0x35c/0x1fd0 [ 287.503325][ C1] ? __lock_acquire+0x35c/0x1fd0 [ 287.503343][ C1] [ 287.503347][ C1] [ 287.503359][ C1] lock_acquire+0x1e3/0x530 [ 287.503376][ C1] ? __pte_offset_map_lock+0x1ba/0x300 [ 287.503397][ C1] ? native_set_ldt+0x360/0x360 [ 287.503417][ C1] ? read_lock_is_recursive+0x20/0x20 [ 287.503437][ C1] ? rcu_is_watching+0x15/0xb0 [ 287.503460][ C1] ? __pte_offset_map+0x2c0/0x380 [ 287.503480][ C1] ? pte_free_now+0x540/0x540 [ 287.503501][ C1] _raw_spin_lock+0x2e/0x40 [ 287.503518][ C1] ? __pte_offset_map_lock+0x1ba/0x300 [ 287.503537][ C1] __pte_offset_map_lock+0x1ba/0x300 [ 287.503564][ C1] ? pte_offset_map_nolock+0x1e0/0x1e0 [ 287.503584][ C1] ? do_raw_spin_unlock+0x13b/0x8b0 [ 287.503605][ C1] ? walk_to_pmd+0x19b/0x240 [ 287.503624][ C1] ? kmalloc_trace+0xb2/0x360 [ 287.503636][ C1] __text_poke+0x2c5/0xd30 [ 287.503651][ C1] ? text_poke_sync+0x30/0x30 [ 287.503667][ C1] ? __kmalloc_node_track_caller+0x125/0x4e0 [ 287.503682][ C1] ? __text_poke+0xd30/0xd30 [ 287.503697][ C1] ? text_poke+0xc0/0xc0 [ 287.503710][ C1] ? kmem_cache_alloc_bulk+0x16c/0x780 [ 287.503727][ C1] ? smp_call_function_many+0x40/0x40 [ 287.503748][ C1] ? perf_event_bpf_output+0x2f0/0x2f0 [ 287.503763][ C1] ? __mutex_trylock_common+0x182/0x2e0 [ 287.503778][ C1] ? __might_sleep+0xe0/0xe0 [ 287.503803][ C1] text_poke_bp_batch+0x8cd/0xb30 [ 287.503823][ C1] ? kmem_cache_alloc_bulk+0x16d/0x780 [ 287.503837][ C1] ? text_poke_loc_init+0x860/0x860 [ 287.503856][ C1] ? arch_jump_label_transform_queue+0x97/0xf0 [ 287.503882][ C1] text_poke_finish+0x30/0x50 [ 287.503897][ C1] arch_jump_label_transform_apply+0x1c/0x30 [ 287.503919][ C1] static_key_disable_cpuslocked+0xce/0x1b0 [ 287.503938][ C1] static_key_disable+0x1a/0x20 [ 287.503954][ C1] toggle_allocation_gate+0x1b8/0x250 [ 287.503971][ C1] ? show_object+0x70/0x70 [ 287.503987][ C1] ? print_irqtrace_events+0x220/0x220 [ 287.504010][ C1] ? process_scheduled_works+0x825/0x1420 [ 287.504029][ C1] process_scheduled_works+0x90f/0x1420 [ 287.504061][ C1] ? assign_work+0x3d0/0x3d0 [ 287.504081][ C1] ? assign_work+0x364/0x3d0 [ 287.504102][ C1] worker_thread+0xa5f/0x1000 [ 287.504130][ C1] kthread+0x2d3/0x370 [ 287.504145][ C1] ? pr_cont_work+0x5e0/0x5e0 [ 287.504162][ C1] ? kthread_blkcg+0xd0/0xd0 [ 287.504177][ C1] ret_from_fork+0x48/0x80 [ 287.504195][ C1] ? kthread_blkcg+0xd0/0xd0 [ 287.504209][ C1] ret_from_fork_asm+0x11/0x20 [ 287.504237][ C1] [ 287.504243][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.404 msecs [ 287.504870][ T29] Kernel panic - not syncing: hung_task: blocked tasks [ 287.972052][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc1-syzkaller-00169-gecb1b8288dc7 #0 [ 287.981857][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 287.991918][ T29] Call Trace: [ 287.995201][ T29] [ 287.998145][ T29] dump_stack_lvl+0x1e7/0x2d0 [ 288.002846][ T29] ? tcp_gro_dev_warn+0x260/0x260 [ 288.007893][ T29] ? panic+0x850/0x850 [ 288.011977][ T29] ? vscnprintf+0x5d/0x80 [ 288.016318][ T29] panic+0x349/0x850 [ 288.020222][ T29] ? nmi_trigger_cpumask_backtrace+0x244/0x310 [ 288.026413][ T29] ? __memcpy_flushcache+0x2b0/0x2b0 [ 288.031710][ T29] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 288.037878][ T29] ? preempt_schedule_thunk+0x1a/0x30 [ 288.043261][ T29] ? nmi_trigger_cpumask_backtrace+0x244/0x310 [ 288.049511][ T29] ? nmi_trigger_cpumask_backtrace+0x2c7/0x310 [ 288.055688][ T29] ? nmi_trigger_cpumask_backtrace+0x2cc/0x310 [ 288.061856][ T29] watchdog+0xfee/0xff0 [ 288.066020][ T29] ? watchdog+0x1e9/0xff0 [ 288.070359][ T29] kthread+0x2d3/0x370 [ 288.074433][ T29] ? hungtask_pm_notify+0x90/0x90 [ 288.079459][ T29] ? kthread_blkcg+0xd0/0xd0 [ 288.084054][ T29] ret_from_fork+0x48/0x80 [ 288.088481][ T29] ? kthread_blkcg+0xd0/0xd0 [ 288.093119][ T29] ret_from_fork_asm+0x11/0x20 [ 288.097918][ T29] [ 288.101185][ T29] Kernel Offset: disabled [ 288.105509][ T29] Rebooting in 86400 seconds..