./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor941024230 <...> Warning: Permanently added '10.128.1.173' (ED25519) to the list of known hosts. execve("./syz-executor941024230", ["./syz-executor941024230"], 0x7ffc6a8acd30 /* 10 vars */) = 0 brk(NULL) = 0x555556531000 brk(0x555556531d00) = 0x555556531d00 arch_prctl(ARCH_SET_FS, 0x555556531380) = 0 set_tid_address(0x555556531650) = 5054 set_robust_list(0x555556531660, 24) = 0 rseq(0x555556531ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor941024230", 4096) = 27 getrandom("\x1a\xa2\x54\xa6\xa7\xda\xbe\xa3", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556531d00 brk(0x555556552d00) = 0x555556552d00 brk(0x555556553000) = 0x555556553000 mprotect(0x7f8c28ba4000, 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 5056 attached , child_tidptr=0x555556531650) = 5056 [pid 5056] set_robust_list(0x555556531660, 24) = 0 [pid 5056] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5056] setpgid(0, 0) = 0 [pid 5056] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5056] write(3, "1000", 4) = 4 [pid 5056] close(3) = 0 [pid 5056] memfd_create("syzkaller", 0) = 3 [pid 5056] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c20600000 [pid 5056] 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 5056] munmap(0x7f8c20600000, 138412032) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5056] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5056] close(3) = 0 [pid 5056] close(4) = 0 [pid 5056] mkdir("./file0", 0777) = 0 [ 57.328556][ T5056] loop0: detected capacity change from 0 to 32768 [ 57.362240][ T5056] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 57.370674][ T5056] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 57.394725][ T5056] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms [ 57.404795][ T8] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 57.411679][ T8] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [pid 5056] mount("/dev/loop0", "./file0", "gfs2", MS_SILENT, "" [pid 5054] kill(-5056, SIGKILL) = 0 [pid 5054] kill(5056, SIGKILL) = 0 [pid 5054] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5054] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5054] getdents64(3, 0x5555565326f0 /* 2 entries */, 32768) = 48 [pid 5054] getdents64(3, 0x5555565326f0 /* 0 entries */, 32768) = 0 [pid 5054] close(3) = 0 [ 76.796290][ T930] cfg80211: failed to load regulatory.db [ 286.714431][ T29] INFO: task kworker/0:0:8 blocked for more than 143 seconds. [ 286.721984][ T29] Not tainted 6.8.0-rc2-syzkaller-00084-g5c24e4e9e708 #0 [ 286.729573][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.738367][ T29] task:kworker/0:0 state:D stack:23664 pid:8 tgid:8 ppid:2 flags:0x00004000 [ 286.748676][ T29] Workqueue: gfs2_recovery gfs2_recover_func [ 286.754800][ T29] Call Trace: [ 286.758068][ T29] [ 286.760989][ T29] __schedule+0x177f/0x49a0 [ 286.765652][ T29] ? __pfx___schedule+0x10/0x10 [ 286.770517][ T29] ? __pfx_lock_release+0x10/0x10 [ 286.775657][ T29] ? schedule+0x8e/0x260 [ 286.779908][ T29] ? wq_worker_sleeping+0x66/0x240 [ 286.785091][ T29] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 286.791441][ T29] ? schedule+0x8e/0x260 [ 286.795734][ T29] schedule+0x149/0x260 [ 286.799904][ T29] io_schedule+0x8c/0x110 [ 286.804229][ T29] folio_wait_bit_common+0x881/0x12b0 [ 286.809728][ T29] ? __pfx_folio_wait_bit_common+0x10/0x10 [ 286.815575][ T29] ? __pfx_wake_page_function+0x10/0x10 [ 286.821110][ T29] ? crc32_le_base+0x6c6/0xd20 [ 286.825971][ T29] ? __filemap_get_folio+0x72d/0xbc0 [ 286.831273][ T29] ? __get_log_header+0x1db/0x4f0 [ 286.836345][ T29] gfs2_jhead_process_page+0x194/0x750 [ 286.841827][ T29] ? __pfx_gfs2_jhead_process_page+0x10/0x10 [ 286.847922][ T29] gfs2_find_jhead+0xd68/0xf10 [ 286.852740][ T29] ? __pfx_gfs2_find_jhead+0x10/0x10 [ 286.858099][ T29] ? gfs2_jdesc_check+0x1fa/0x290 [ 286.863149][ T29] gfs2_recover_func+0x6c1/0x1f20 [ 286.868619][ T29] ? lockdep_unlock+0x169/0x300 [ 286.873493][ T29] ? __pfx_gfs2_recover_func+0x10/0x10 [ 286.879007][ T29] ? mark_lock+0x2a4/0x350 [ 286.883433][ T29] ? __lock_acquire+0x1345/0x1fd0 [ 286.888550][ T29] ? lockdep_hardirqs_on_prepare+0x43c/0x780 [ 286.894595][ T29] ? process_scheduled_works+0x825/0x1420 [ 286.900307][ T29] process_scheduled_works+0x913/0x1420 [ 286.905994][ T29] ? __pfx_process_scheduled_works+0x10/0x10 [ 286.912007][ T29] ? assign_work+0x364/0x3d0 [ 286.916656][ T29] worker_thread+0xa5f/0x1000 [ 286.921367][ T29] ? __pfx_worker_thread+0x10/0x10 [ 286.926614][ T29] kthread+0x2ef/0x390 [ 286.930725][ T29] ? __pfx_worker_thread+0x10/0x10 [ 286.935906][ T29] ? __pfx_kthread+0x10/0x10 [ 286.940520][ T29] ret_from_fork+0x4b/0x80 [ 286.945038][ T29] ? __pfx_kthread+0x10/0x10 [ 286.949642][ T29] ret_from_fork_asm+0x1b/0x30 [ 286.954512][ T29] [ 286.957602][ T29] INFO: task syz-executor941:5056 blocked for more than 143 seconds. [ 286.965716][ T29] Not tainted 6.8.0-rc2-syzkaller-00084-g5c24e4e9e708 #0 [ 286.973265][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.981978][ T29] task:syz-executor941 state:D stack:23408 pid:5056 tgid:5056 ppid:5054 flags:0x00004006 [ 286.992290][ T29] Call Trace: [ 286.995619][ T29] [ 286.998572][ T29] __schedule+0x177f/0x49a0 [ 287.003121][ T29] ? __pfx___schedule+0x10/0x10 [ 287.008037][ T29] ? __pfx_lock_release+0x10/0x10 [ 287.013057][ T29] ? _raw_spin_unlock_irqrestore+0x8f/0x140 [ 287.019042][ T29] ? lockdep_hardirqs_on+0x98/0x140 [ 287.024392][ T29] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 287.030296][ T29] ? schedule+0x8e/0x260 [ 287.034576][ T29] schedule+0x149/0x260 [ 287.038741][ T29] bit_wait+0x12/0xd0 [ 287.042716][ T29] __wait_on_bit+0xb0/0x2f0 [ 287.047297][ T29] ? __pfx_bit_wait+0x10/0x10 [ 287.051982][ T29] out_of_line_wait_on_bit+0x1d4/0x260 [ 287.057659][ T29] ? __pfx_bit_wait+0x10/0x10 [ 287.062346][ T29] ? __pfx_out_of_line_wait_on_bit+0x10/0x10 [ 287.068386][ T29] ? __pfx_wake_bit_function+0x10/0x10 [ 287.073852][ T29] ? do_raw_spin_unlock+0x13b/0x8b0 [ 287.079087][ T29] ? __pfx_gfs2_meta_buffer+0x10/0x10 [ 287.084506][ T29] gfs2_recover_journal+0xf2/0x160 [ 287.089605][ T29] init_journal+0x1845/0x23f0 [ 287.094273][ T29] ? init_inodes+0xdc/0x320 [ 287.098830][ T29] ? __pfx_init_journal+0x10/0x10 [ 287.103857][ T29] ? init_sb+0xc37/0x1330 [ 287.108285][ T29] ? snprintf+0xda/0x120 [ 287.112686][ T29] ? init_inodes+0xdc/0x320 [ 287.117260][ T29] ? __pfx_snprintf+0x10/0x10 [ 287.121970][ T29] init_inodes+0xdc/0x320 [ 287.126367][ T29] gfs2_fill_super+0x1edb/0x26c0 [ 287.131356][ T29] ? __pfx_gfs2_fill_super+0x10/0x10 [ 287.136694][ T29] ? snprintf+0xda/0x120 [ 287.140947][ T29] ? __pfx_lock_release+0x10/0x10 [ 287.146032][ T29] ? do_raw_spin_lock+0x14e/0x370 [ 287.151065][ T29] ? __pfx_snprintf+0x10/0x10 [ 287.155794][ T29] ? set_blocksize+0x1df/0x390 [ 287.160603][ T29] ? init_locking+0xbd/0x210 [ 287.165256][ T29] ? sb_set_blocksize+0x99/0x100 [ 287.170234][ T29] ? setup_bdev_super+0x4c8/0x5c0 [ 287.175329][ T29] get_tree_bdev+0x3f7/0x570 [ 287.179931][ T29] ? __pfx_gfs2_fill_super+0x10/0x10 [ 287.185280][ T29] ? __pfx_get_tree_bdev+0x10/0x10 [ 287.190399][ T29] ? __pfx_vfs_parse_fs_string+0x10/0x10 [ 287.196134][ T29] gfs2_get_tree+0x54/0x220 [ 287.200650][ T29] ? bpf_lsm_capable+0x9/0x10 [ 287.205533][ T29] vfs_get_tree+0x90/0x2a0 [ 287.209968][ T29] do_new_mount+0x2be/0xb40 [ 287.214507][ T29] ? ns_capable+0x89/0xf0 [ 287.218869][ T29] ? __pfx_do_new_mount+0x10/0x10 [ 287.223883][ T29] __se_sys_mount+0x2d9/0x3c0 [ 287.228635][ T29] ? __pfx___se_sys_mount+0x10/0x10 [ 287.233839][ T29] ? do_syscall_64+0x108/0x240 [ 287.238721][ T29] ? __x64_sys_mount+0x20/0xc0 [ 287.243493][ T29] do_syscall_64+0xf9/0x240 [ 287.248083][ T29] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 287.254085][ T29] RIP: 0033:0x7f8c28b11daa [ 287.258550][ T29] RSP: 002b:00007ffcb8a588d8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 287.267055][ T29] RAX: ffffffffffffffda RBX: 00007ffcb8a588f0 RCX: 00007f8c28b11daa [ 287.275168][ T29] RDX: 0000000020021140 RSI: 0000000020021180 RDI: 00007ffcb8a588f0 [ 287.283149][ T29] RBP: 0000000000000004 R08: 00007ffcb8a58930 R09: 0000000000021177 [ 287.291209][ T29] R10: 0000000000008000 R11: 0000000000000282 R12: 0000000000008000 [ 287.299220][ T29] R13: 00007ffcb8a58930 R14: 0000000000000003 R15: 0000000001000000 [ 287.307267][ T29] [ 287.310301][ T29] [ 287.310301][ T29] Showing all locks held in the system: [ 287.318059][ T29] 2 locks held by kworker/0:0/8: [ 287.322997][ T29] #0: ffff888018323938 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 [ 287.334635][ T29] #1: ffffc900000d7d20 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 [ 287.346531][ T29] 1 lock held by khungtaskd/29: [ 287.351361][ T29] #0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 287.361378][ T29] 1 lock held by syslogd/4492: [ 287.366167][ T29] #0: ffff8880b953c918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 [ 287.376151][ T29] 2 locks held by getty/4805: [ 287.380823][ T29] #0: ffff88802a1980a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 287.390718][ T29] #1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 [ 287.400899][ T29] 1 lock held by syz-executor941/5056: [ 287.406413][ T29] #0: ffff88802f13a0e0 (&type->s_umount_key#42/1){+.+.}-{3:3}, at: alloc_super+0x20e/0x8f0 [ 287.416670][ T29] [ 287.419007][ T29] ============================================= [ 287.419007][ T29] [ 287.427458][ T29] NMI backtrace for cpu 0 [ 287.431790][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc2-syzkaller-00084-g5c24e4e9e708 #0 [ 287.441576][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 287.451613][ T29] Call Trace: [ 287.454875][ T29] [ 287.457789][ T29] dump_stack_lvl+0x1e7/0x2e0 [ 287.462476][ T29] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.467677][ T29] ? __pfx__printk+0x10/0x10 [ 287.472259][ T29] ? vprintk_emit+0x607/0x720 [ 287.476927][ T29] ? __pfx_vprintk_emit+0x10/0x10 [ 287.481937][ T29] nmi_cpu_backtrace+0x49c/0x4d0 [ 287.486922][ T29] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.492364][ T29] ? _printk+0xd5/0x120 [ 287.496522][ T29] ? __pfx__printk+0x10/0x10 [ 287.501111][ T29] ? __wake_up_klogd+0xcc/0x110 [ 287.505958][ T29] ? __pfx__printk+0x10/0x10 [ 287.510536][ T29] ? __rcu_read_unlock+0xa0/0x110 [ 287.515577][ T29] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.521543][ T29] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 287.527512][ T29] watchdog+0xfaf/0xff0 [ 287.531692][ T29] ? watchdog+0x1e9/0xff0 [ 287.536027][ T29] ? __pfx_watchdog+0x10/0x10 [ 287.540710][ T29] kthread+0x2ef/0x390 [ 287.544781][ T29] ? __pfx_watchdog+0x10/0x10 [ 287.549463][ T29] ? __pfx_kthread+0x10/0x10 [ 287.554052][ T29] ret_from_fork+0x4b/0x80 [ 287.558530][ T29] ? __pfx_kthread+0x10/0x10 [ 287.563114][ T29] ret_from_fork_asm+0x1b/0x30 [ 287.567883][ T29] [ 287.571023][ T29] Sending NMI from CPU 0 to CPUs 1: [ 287.576278][ C1] NMI backtrace for cpu 1 [ 287.576288][ C1] CPU: 1 PID: 80 Comm: kworker/u4:5 Not tainted 6.8.0-rc2-syzkaller-00084-g5c24e4e9e708 #0 [ 287.576306][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 287.576316][ C1] Workqueue: events_unbound toggle_allocation_gate [ 287.576340][ C1] RIP: 0010:__lock_acquire+0xf26/0x1fd0 [ 287.576363][ C1] Code: 1f 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 20 24 c5 92 be 08 00 00 00 e8 58 10 81 00 48 0f a3 1d 50 fe 53 11 0f 83 56 02 00 00 <48> 69 c3 c8 00 00 00 48 8d 98 20 83 93 92 48 bf 00 00 00 00 00 fc [ 287.576376][ C1] RSP: 0018:ffffc9000234f6b0 EFLAGS: 00000057 [ 287.576389][ C1] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffffffff817125c8 [ 287.576399][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff92c52420 [ 287.576410][ C1] RBP: 63eb093d7c6c6e45 R08: ffffffff92c52427 R09: 1ffffffff258a484 [ 287.576421][ C1] R10: dffffc0000000000 R11: fffffbfff258a485 R12: ffff888018f39dc0 [ 287.576433][ C1] R13: ffff888018f39dc0 R14: 0000000000000000 R15: ffff888018f39dc0 [ 287.576444][ C1] FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 287.576458][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.576470][ C1] CR2: 00007fb3f3207580 CR3: 000000000df32000 CR4: 00000000003506f0 [ 287.576484][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 287.576493][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 287.576503][ C1] Call Trace: [ 287.576509][ C1] [ 287.576515][ C1] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 287.576536][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 287.576556][ C1] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.576583][ C1] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 287.576600][ C1] ? nmi_handle+0x14f/0x580 [ 287.576638][ C1] ? nmi_handle+0x2a/0x580 [ 287.576652][ C1] ? __lock_acquire+0xf26/0x1fd0 [ 287.576676][ C1] ? default_do_nmi+0x63/0x160 [ 287.576697][ C1] ? exc_nmi+0x121/0x210 [ 287.576716][ C1] ? end_repeat_nmi+0xf/0x60 [ 287.576738][ C1] ? __lock_acquire+0xf18/0x1fd0 [ 287.576758][ C1] ? __lock_acquire+0xf26/0x1fd0 [ 287.576778][ C1] ? __lock_acquire+0xf26/0x1fd0 [ 287.576798][ C1] ? __lock_acquire+0xf26/0x1fd0 [ 287.576817][ C1] [ 287.576822][ C1] [ 287.576834][ C1] lock_acquire+0x1e3/0x530 [ 287.576853][ C1] ? arch_jump_label_transform_queue+0x5d/0x100 [ 287.576875][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 287.576896][ C1] ? __pfx___might_resched+0x10/0x10 [ 287.576912][ C1] ? arch_jump_label_transform_queue+0x9b/0x100 [ 287.576931][ C1] ? __pfx_lock_release+0x10/0x10 [ 287.576951][ C1] ? insn_decode+0x355/0x500 [ 287.576968][ C1] __mutex_lock+0x136/0xd70 [ 287.576986][ C1] ? arch_jump_label_transform_queue+0x5d/0x100 [ 287.577006][ C1] ? __mutex_unlock_slowpath+0x21c/0x750 [ 287.577023][ C1] ? __pfx_text_poke_loc_init+0x10/0x10 [ 287.577041][ C1] ? arch_jump_label_transform_queue+0x5d/0x100 [ 287.577060][ C1] ? __pfx___mutex_lock+0x10/0x10 [ 287.577079][ C1] ? static_key_disable_cpuslocked+0x9b/0x1c0 [ 287.577099][ C1] ? text_poke_queue+0x46/0x180 [ 287.577159][ C1] arch_jump_label_transform_queue+0x5d/0x100 [ 287.577179][ C1] __jump_label_update+0x177/0x3a0 [ 287.577201][ C1] static_key_disable_cpuslocked+0xce/0x1c0 [ 287.577220][ C1] static_key_disable+0x1a/0x20 [ 287.577238][ C1] toggle_allocation_gate+0x1b8/0x250 [ 287.577256][ C1] ? __pfx_toggle_allocation_gate+0x10/0x10 [ 287.577275][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 287.577300][ C1] ? process_scheduled_works+0x825/0x1420 [ 287.577321][ C1] process_scheduled_works+0x913/0x1420 [ 287.577352][ C1] ? __pfx_process_scheduled_works+0x10/0x10 [ 287.577375][ C1] ? assign_work+0x364/0x3d0 [ 287.577398][ C1] worker_thread+0xa5f/0x1000 [ 287.577426][ C1] ? __pfx_worker_thread+0x10/0x10 [ 287.577446][ C1] kthread+0x2ef/0x390 [ 287.577462][ C1] ? __pfx_worker_thread+0x10/0x10 [ 287.577481][ C1] ? __pfx_kthread+0x10/0x10 [ 287.577497][ C1] ret_from_fork+0x4b/0x80 [ 287.577516][ C1] ? __pfx_kthread+0x10/0x10 [ 287.577531][ C1] ret_from_fork_asm+0x1b/0x30 [ 287.577558][ C1] [ 287.577564][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.286 msecs [ 287.578539][ T29] Kernel panic - not syncing: hung_task: blocked tasks [ 287.997302][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc2-syzkaller-00084-g5c24e4e9e708 #0 [ 288.007095][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 288.017140][ T29] Call Trace: [ 288.020416][ T29] [ 288.023339][ T29] dump_stack_lvl+0x1e7/0x2e0 [ 288.028016][ T29] ? __pfx_dump_stack_lvl+0x10/0x10 [ 288.033294][ T29] ? __pfx__printk+0x10/0x10 [ 288.037873][ T29] ? lockdep_hardirqs_on_prepare+0x43c/0x780 [ 288.043854][ T29] ? vscnprintf+0x5d/0x90 [ 288.048180][ T29] panic+0x349/0x860 [ 288.052068][ T29] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 288.058252][ T29] ? __pfx_panic+0x10/0x10 [ 288.062683][ T29] ? tick_nohz_tick_stopped+0x7b/0xc0 [ 288.068093][ T29] ? __irq_work_queue_local+0x137/0x3e0 [ 288.073654][ T29] ? preempt_schedule_thunk+0x1a/0x30 [ 288.079020][ T29] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 288.085174][ T29] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320 [ 288.091327][ T29] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320 [ 288.097480][ T29] watchdog+0xfee/0xff0 [ 288.101634][ T29] ? watchdog+0x1e9/0xff0 [ 288.105983][ T29] ? __pfx_watchdog+0x10/0x10 [ 288.110677][ T29] kthread+0x2ef/0x390 [ 288.114755][ T29] ? __pfx_watchdog+0x10/0x10 [ 288.119432][ T29] ? __pfx_kthread+0x10/0x10 [ 288.124022][ T29] ret_from_fork+0x4b/0x80 [ 288.128450][ T29] ? __pfx_kthread+0x10/0x10 [ 288.133060][ T29] ret_from_fork_asm+0x1b/0x30 [ 288.137846][ T29] [ 288.141043][ T29] Kernel Offset: disabled [ 288.145357][ T29] Rebooting in 86400 seconds..