[ 429.537285][ T27] INFO: task udevd:3710 blocked for more than 143 seconds. [ 429.544527][ T27] Not tainted 6.1.0-rc1-syzkaller-00134-ge35184f32151 #0 [ 429.552803][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 429.561754][ T27] task:udevd state:D stack:27272 pid:3710 ppid:2970 flags:0x00004006 [ 429.571189][ T27] Call Trace: [ 429.574490][ T27] [ 429.577485][ T27] __schedule+0xae9/0x53f0 [ 429.581919][ T27] ? arch_stack_walk+0x5c/0xe0 [ 429.586673][ T27] ? rcu_read_lock_sched_held+0xd/0x70 [ 429.592173][ T27] ? rcu_read_lock_sched_held+0xd/0x70 [ 429.597798][ T27] ? io_schedule_timeout+0x140/0x140 [ 429.603092][ T27] ? lock_downgrade+0x6e0/0x6e0 [ 429.607975][ T27] ? do_raw_spin_lock+0x120/0x2a0 [ 429.613013][ T27] schedule+0xda/0x1b0 [ 429.617673][ T27] io_schedule+0xba/0x130 [ 429.622026][ T27] folio_wait_bit_common+0x394/0x9b0 [ 429.627370][ T27] ? filemap_get_folios_contig+0xa40/0xa40 [ 429.633301][ T27] ? lock_acquire+0x4fc/0x630 [ 429.638027][ T27] ? rcu_read_lock_sched_held+0xd/0x70 [ 429.643504][ T27] ? lock_release+0x5cb/0x810 [ 429.648218][ T27] ? __filemap_get_folio+0x250/0xd90 [ 429.653527][ T27] ? folio_unlock+0xc0/0xc0 [ 429.658068][ T27] ? xas_start+0x157/0x730 [ 429.662668][ T27] __filemap_get_folio+0xb76/0xd90 [ 429.667809][ T27] ? filemap_add_folio+0x1d0/0x1d0 [ 429.673023][ T27] ? find_get_pages_range_tag+0x3e0/0x700 [ 429.678776][ T27] ? filemap_get_folios+0x710/0x710 [ 429.683999][ T27] truncate_inode_pages_range+0x382/0x1020 [ 429.689954][ T27] ? truncate_inode_partial_folio+0xb90/0xb90 [ 429.696049][ T27] ? smp_call_function_many_cond+0x47f/0x10a0 [ 429.702454][ T27] ? __brelse+0xa0/0xa0 [ 429.706651][ T27] ? smp_call_on_cpu+0x250/0x250 [ 429.711764][ T27] ? mutex_lock_io_nested+0x1190/0x1190 [ 429.717693][ T27] ? __brelse+0xa0/0xa0 [ 429.722024][ T27] blkdev_flush_mapping+0x140/0x2f0 [ 429.727979][ T27] blkdev_put_whole+0xd1/0xf0 [ 429.732685][ T27] blkdev_put+0x226/0x770 [ 429.737054][ T27] blkdev_close+0x64/0x80 [ 429.741408][ T27] __fput+0x27c/0xa90 [ 429.745386][ T27] ? blkdev_fsync+0xa0/0xa0 [ 429.750147][ T27] task_work_run+0x16b/0x270 [ 429.754810][ T27] ? task_work_cancel+0x30/0x30 [ 429.759891][ T27] ? do_raw_spin_unlock+0x171/0x230 [ 429.765109][ T27] do_exit+0xb35/0x2a20 [ 429.769514][ T27] ? rcu_read_lock_sched_held+0xd/0x70 [ 429.775111][ T27] ? lock_release+0x5cb/0x810 [ 429.780028][ T27] ? get_signal+0x88a/0x2430 [ 429.784630][ T27] ? mm_update_next_owner+0x7b0/0x7b0 [ 429.790526][ T27] ? do_raw_spin_lock+0x120/0x2a0 [ 429.795566][ T27] ? rwlock_bug.part.0+0x90/0x90 [ 429.800753][ T27] do_group_exit+0xd0/0x2a0 [ 429.805272][ T27] get_signal+0x21a1/0x2430 [ 429.810088][ T27] ? debug_check_no_obj_freed+0x20c/0x420 [ 429.815808][ T27] ? exit_signals+0x8b0/0x8b0 [ 429.820689][ T27] arch_do_signal_or_restart+0x82/0x2300 [ 429.826340][ T27] ? do_sys_openat2+0xa1/0x4c0 [ 429.831461][ T27] ? build_open_flags+0x6f0/0x6f0 [ 429.836482][ T27] ? get_sigframe_size+0x10/0x10 [ 429.841960][ T27] ? lock_downgrade+0x6e0/0x6e0 [ 429.846812][ T27] ? __x64_sys_openat+0x13f/0x1f0 [ 429.852003][ T27] ? __ia32_sys_open+0x1c0/0x1c0 [ 429.856929][ T27] exit_to_user_mode_prepare+0x15f/0x250 [ 429.863201][ T27] syscall_exit_to_user_mode+0x19/0x50 [ 429.868899][ T27] do_syscall_64+0x42/0xb0 [ 429.873583][ T27] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 429.880519][ T27] RIP: 0033:0x7f02bd525697 [ 429.884960][ T27] RSP: 002b:00007ffdb7af8090 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 429.893612][ T27] RAX: 0000000000000008 RBX: 000055dab98168b0 RCX: 00007f02bd525697 [ 429.901819][ T27] RDX: 00000000000a0800 RSI: 000055dab980e760 RDI: 00000000ffffff9c [ 429.910504][ T27] RBP: 000055dab980e760 R08: 0000000000000001 R09: 00007ffdb7b40080 [ 429.918698][ T27] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800 [ 429.927360][ T27] R13: 000055dab9812b30 R14: 0000000000000001 R15: 000055dab97e12c0 [ 429.935361][ T27] [ 429.938667][ T27] INFO: task syz-executor.0:3761 blocked for more than 143 seconds. [ 429.946734][ T27] Not tainted 6.1.0-rc1-syzkaller-00134-ge35184f32151 #0 [ 429.954894][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 429.963752][ T27] task:syz-executor.0 state:D stack:28552 pid:3761 ppid:3741 flags:0x00000004 [ 429.973090][ T27] Call Trace: [ 429.976366][ T27] [ 429.979577][ T27] __schedule+0xae9/0x53f0 [ 429.983990][ T27] ? lock_downgrade+0x6e0/0x6e0 [ 429.989005][ T27] ? rcu_read_lock_sched_held+0xd/0x70 [ 429.994487][ T27] ? lock_acquire+0x4fc/0x630 [ 430.000514][ T27] ? rcu_read_lock_sched_held+0xd/0x70 [ 430.006013][ T27] ? lock_release+0x5cb/0x810 [ 430.010940][ T27] ? io_schedule_timeout+0x140/0x140 [ 430.016226][ T27] ? rwlock_bug.part.0+0x90/0x90 [ 430.021581][ T27] schedule+0xda/0x1b0 [ 430.025670][ T27] schedule_preempt_disabled+0xf/0x20 [ 430.031234][ T27] __mutex_lock+0xa44/0x1350 [ 430.035826][ T27] ? blkdev_get_by_dev.part.0+0x9b/0xb90 [ 430.041686][ T27] ? mutex_lock_io_nested+0x1190/0x1190 [ 430.048162][ T27] ? do_raw_spin_unlock+0x171/0x230 [ 430.053356][ T27] ? _atomic_dec_and_lock+0x92/0x100 [ 430.059237][ T27] ? disk_block_events+0x1d/0x130 [ 430.064271][ T27] blkdev_get_by_dev.part.0+0x9b/0xb90 [ 430.070495][ T27] ? devcgroup_check_permission+0x1a6/0x430 [ 430.076391][ T27] blkdev_get_by_dev+0x6b/0x80 [ 430.081342][ T27] blkdev_open+0x13c/0x2c0 [ 430.086020][ T27] do_dentry_open+0x6cc/0x13f0 [ 430.090961][ T27] ? blkdev_close+0x80/0x80 [ 430.095462][ T27] path_openat+0x1bf6/0x2860 [ 430.100279][ T27] ? lock_acquire+0x4fc/0x630 [ 430.105550][ T27] ? path_lookupat+0x840/0x840 [ 430.110779][ T27] ? lock_release+0x810/0x810 [ 430.115494][ T27] ? rcu_read_lock_sched_held+0xd/0x70 [ 430.121874][ T27] do_filp_open+0x1b6/0x400 [ 430.126425][ T27] ? may_open_dev+0xf0/0xf0 [ 430.131633][ T27] ? do_raw_spin_lock+0x120/0x2a0 [ 430.136698][ T27] ? rwlock_bug.part.0+0x90/0x90 [ 430.142668][ T27] ? _raw_spin_unlock+0x24/0x40 [ 430.148177][ T27] ? alloc_fd+0x2d8/0x6d0 [ 430.152627][ T27] do_sys_openat2+0x16d/0x4c0 [ 430.158213][ T27] ? rcu_read_lock_sched_held+0xd/0x70 [ 430.163861][ T27] ? build_open_flags+0x6f0/0x6f0 [ 430.170214][ T27] ? lock_downgrade+0x6e0/0x6e0 [ 430.175124][ T27] ? up_write+0x520/0x520 [ 430.182687][ T27] __x64_sys_openat+0x13f/0x1f0 Warning: Permanently added '10.128.0.198' (ECDSA) to the list of known hosts. [ 430.188473][ T27] ? __ia32_sys_open+0x1c0/0x1c0 [ 430.193531][ T27] ? syscall_enter_from_user_mode+0x22/0xb0 [ 430.199872][ T27] ? trace_hardirqs_on+0x2d/0x160 [ 430.204899][ T27] do_syscall_64+0x35/0xb0 [ 430.209700][ T27] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 430.215685][ T27] RIP: 0033:0x418484 [ 430.219943][ T27] RSP: 002b:00007f696fddccc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 [ 430.228622][ T27] RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000418484 [ 430.236629][ T27] RDX: 0000000000000000 RSI: 00007f696fddcd60 RDI: 00000000ffffff9c [ 430.244960][ T27] RBP: 00007f696fddcd60 R08: 0000000000000000 R09: 002364626e2f7665 [ 430.253220][ T27] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 430.261466][ T27] R13: 00007ffceabd31af R14: 00007f696fddd300 R15: 0000000000022000 [ 430.269635][ T27] [ 430.272687][ T27] INFO: lockdep is turned off. [ 430.277736][ T27] NMI backtrace for cpu 1 [ 430.282077][ T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted 6.1.0-rc1-syzkaller-00134-ge35184f32151 #0 [ 430.291867][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 [ 430.301905][ T27] Call Trace: [ 430.305170][ T27] [ 430.308086][ T27] dump_stack_lvl+0xcd/0x134 [ 430.312676][ T27] nmi_cpu_backtrace.cold+0x24/0x18a [ 430.317947][ T27] nmi_trigger_cpumask_backtrace+0x32f/0x3c0 [ 430.324005][ T27] ? lapic_can_unplug_cpu+0x80/0x80 [ 430.329192][ T27] watchdog+0xc71/0xfc0 [ 430.333338][ T27] ? proc_dohung_task_timeout_secs+0x80/0x80 [ 430.339308][ T27] kthread+0x2e4/0x3a0 [ 430.343885][ T27] ? kthread_complete_and_exit+0x40/0x40 [ 430.349992][ T27] ret_from_fork+0x1f/0x30 [ 430.354401][ T27] [ 430.357585][ T27] Sending NMI from CPU 1 to CPUs 0: [ 430.362792][ C0] NMI backtrace for cpu 0 skipped: idling at acpi_idle_do_entry+0x1fd/0x2a0 [ 430.371957][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 430.378825][ T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted 6.1.0-rc1-syzkaller-00134-ge35184f32151 #0 [ 430.388634][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 [ 430.398702][ T27] Call Trace: [ 430.401987][ T27] [ 430.404926][ T27] dump_stack_lvl+0xcd/0x134 [ 430.409548][ T27] panic+0x2c8/0x622 [ 430.413458][ T27] ? panic_print_sys_info.part.0+0x110/0x110 [ 430.419449][ T27] ? preempt_schedule_thunk+0x16/0x18 [ 430.424837][ T27] ? watchdog.cold+0x130/0x158 [ 430.429616][ T27] watchdog.cold+0x141/0x158 [ 430.434220][ T27] ? proc_dohung_task_timeout_secs+0x80/0x80 [ 430.440226][ T27] kthread+0x2e4/0x3a0 [ 430.444303][ T27] ? kthread_complete_and_exit+0x40/0x40 [ 430.450135][ T27] ret_from_fork+0x1f/0x30 [ 430.454592][ T27] [ 430.457768][ T27] Kernel Offset: disabled [ 430.462101][ T27] Rebooting in 86400 seconds..