forked to background, child pid 3184 no interfaces have a carrier [ 23.208162][ T3185] 8021q: adding VLAN 0 to HW filter on device bond0 [ 23.217992][ T3185] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller syzkaller login: [ 70.594996][ T14] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.10.9' (ECDSA) to the list of known hosts. executing program [ 490.623625][ T3646] nbd0: detected capacity change from 0 to 10 [ 490.741764][ T3643] block nbd0: shutting down sockets [ 521.151676][ T52] block nbd0: Possible stuck request ffff88801df70000: control (read@0,4096B). Runtime 30 seconds [ 550.704346][ T2972] udevd[2972]: worker [3645] /devices/virtual/block/nbd0 is taking a long time [ 551.231601][ T52] block nbd0: Possible stuck request ffff88801df70000: control (read@0,4096B). Runtime 60 seconds [ 581.311646][ T52] block nbd0: Possible stuck request ffff88801df70000: control (read@0,4096B). Runtime 90 seconds [ 611.391607][ T52] block nbd0: Possible stuck request ffff88801df70000: control (read@0,4096B). Runtime 120 seconds [ 641.471596][ T52] block nbd0: Possible stuck request ffff88801df70000: control (read@0,4096B). Runtime 150 seconds executing program [ 670.868953][ T2972] udevd[2972]: worker [3645] /devices/virtual/block/nbd0 timeout; kill it [ 670.878235][ T2972] udevd[2972]: seq 7475 '/devices/virtual/block/nbd0' killed [ 670.878283][ T3645] ldm_validate_partition_table(): Disk read failed. [ 670.892353][ T3645] Dev nbd0: unable to read RDB block 0 [ 670.897793][ T3645] nbd0: unable to read partition table [ 670.903493][ T3645] nbd0: partition table beyond EOD, truncated [ 670.915387][ T2972] udevd[2972]: worker [3645] terminated by signal 9 (Killed) [ 670.922943][ T2972] udevd[2972]: worker [3645] failed while handling '/devices/virtual/block/nbd0' [ 671.551609][ T52] block nbd0: Possible stuck request ffff88801df70000: control (read@0,4096B). Runtime 180 seconds [ 701.631672][ T52] block nbd0: Possible stuck request ffff88801df70000: control (read@0,4096B). Runtime 210 seconds [ 731.711677][ T52] block nbd0: Possible stuck request ffff88801df70000: control (read@0,4096B). Runtime 240 seconds [ 761.791651][ T52] block nbd0: Possible stuck request ffff88801df70000: control (read@0,4096B). Runtime 270 seconds [ 791.871620][ T52] block nbd0: Possible stuck request ffff88801df70000: control (read@0,4096B). Runtime 300 seconds [ 821.951623][ T52] block nbd0: Possible stuck request ffff88801df70000: control (read@0,4096B). Runtime 330 seconds [ 852.031690][ T52] block nbd0: Possible stuck request ffff88801df70000: control (read@0,4096B). Runtime 360 seconds [ 859.071659][ T28] INFO: task syz-executor411:3654 blocked for more than 143 seconds. [ 859.079903][ T28] Not tainted 6.0.0-rc4-syzkaller-00062-g0066f1b0e275 #0 [ 859.087525][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 859.096249][ T28] task:syz-executor411 state:D stack:28456 pid: 3654 ppid: 3641 flags:0x00000004 [ 859.105528][ T28] Call Trace: [ 859.108820][ T28] [ 859.111801][ T28] __schedule+0xadf/0x52b0 [ 859.116277][ T28] ? io_schedule_timeout+0x140/0x140 [ 859.121785][ T28] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 859.127610][ T28] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 859.133553][ T28] schedule+0xda/0x1b0 [ 859.137641][ T28] blk_mq_freeze_queue_wait+0x112/0x160 [ 859.143236][ T28] ? blk_mq_queue_inflight+0xa0/0xa0 [ 859.148540][ T28] ? blk_mq_run_hw_queue+0x490/0x490 [ 859.153862][ T28] ? prepare_to_wait_exclusive+0x2b0/0x2b0 [ 859.159687][ T28] nbd_add_socket+0x166/0x810 [ 859.164471][ T28] ? apparmor_capable+0x1d8/0x460 [ 859.169522][ T28] ? nbd_alloc_config.part.0+0x180/0x180 [ 859.175279][ T28] ? bpf_lsm_capable+0x5/0x10 [ 859.180088][ T28] ? security_capable+0x8f/0xc0 [ 859.185093][ T28] nbd_ioctl+0x4ab/0xbd0 [ 859.189355][ T28] ? blkdev_bszset+0x1f0/0x1f0 [ 859.194161][ T28] ? nbd_start_device+0xc30/0xc30 [ 859.199197][ T28] ? __ct_user_exit+0xff/0x150 [ 859.204015][ T28] ? lock_downgrade+0x6e0/0x6e0 [ 859.208975][ T28] ? nbd_start_device+0xc30/0xc30 [ 859.214057][ T28] blkdev_ioctl+0x36e/0x800 [ 859.218589][ T28] ? blkdev_common_ioctl+0x1a30/0x1a30 [ 859.224146][ T28] ? bpf_lsm_file_ioctl+0x5/0x10 [ 859.229111][ T28] ? blkdev_common_ioctl+0x1a30/0x1a30 [ 859.234633][ T28] __x64_sys_ioctl+0x193/0x200 [ 859.239504][ T28] do_syscall_64+0x35/0xb0 [ 859.243978][ T28] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 859.249975][ T28] RIP: 0033:0x7f6e450cdee9 [ 859.254624][ T28] RSP: 002b:00007f6e4507b308 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 859.263093][ T28] RAX: ffffffffffffffda RBX: 00007f6e45151408 RCX: 00007f6e450cdee9 [ 859.271058][ T28] RDX: 0000000000000004 RSI: 000000000000ab00 RDI: 0000000000000003 [ 859.279062][ T28] RBP: 00007f6e45151400 R08: 0000000000000000 R09: 0000000000000000 [ 859.287094][ T28] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6e4515140c [ 859.295133][ T28] R13: 00007f6e4511f074 R14: 64626e2f7665642f R15: 0000000000022000 [ 859.303416][ T28] [ 859.306438][ T28] INFO: task syz-executor411:3655 blocked for more than 143 seconds. [ 859.314580][ T28] Not tainted 6.0.0-rc4-syzkaller-00062-g0066f1b0e275 #0 [ 859.322198][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 859.331059][ T28] task:syz-executor411 state:D stack:29536 pid: 3655 ppid: 3641 flags:0x00000004 [ 859.340305][ T28] Call Trace: [ 859.343655][ T28] [ 859.346598][ T28] __schedule+0xadf/0x52b0 [ 859.351012][ T28] ? io_schedule_timeout+0x140/0x140 [ 859.356335][ T28] schedule+0xda/0x1b0 [ 859.360437][ T28] schedule_preempt_disabled+0xf/0x20 [ 859.365889][ T28] __mutex_lock+0xa44/0x1350 [ 859.370763][ T28] ? nbd_ioctl+0x151/0xbd0 [ 859.375488][ T28] ? mutex_lock_io_nested+0x1190/0x1190 [ 859.381056][ T28] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 859.386924][ T28] ? bpf_lsm_capable+0x5/0x10 [ 859.391666][ T28] ? security_capable+0x8f/0xc0 [ 859.396526][ T28] nbd_ioctl+0x151/0xbd0 [ 859.400759][ T28] ? blkdev_bszset+0x1f0/0x1f0 [ 859.405580][ T28] ? nbd_start_device+0xc30/0xc30 [ 859.410625][ T28] ? __ct_user_exit+0xff/0x150 [ 859.415434][ T28] ? lock_downgrade+0x6e0/0x6e0 [ 859.420299][ T28] ? nbd_start_device+0xc30/0xc30 [ 859.425405][ T28] blkdev_ioctl+0x36e/0x800 [ 859.429923][ T28] ? blkdev_common_ioctl+0x1a30/0x1a30 [ 859.435435][ T28] ? bpf_lsm_file_ioctl+0x5/0x10 [ 859.440390][ T28] ? blkdev_common_ioctl+0x1a30/0x1a30 [ 859.445912][ T28] __x64_sys_ioctl+0x193/0x200 [ 859.450712][ T28] do_syscall_64+0x35/0xb0 [ 859.455163][ T28] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 859.461071][ T28] RIP: 0033:0x7f6e450cdee9 [ 859.465532][ T28] RSP: 002b:00007f6e4505a308 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 859.474022][ T28] RAX: ffffffffffffffda RBX: 00007f6e45151418 RCX: 00007f6e450cdee9 [ 859.482057][ T28] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003 [ 859.490053][ T28] RBP: 00007f6e45151410 R08: 00007f6e4505a700 R09: 0000000000000000 [ 859.498104][ T28] R10: 00007f6e4505a700 R11: 0000000000000246 R12: 00007f6e4515141c [ 859.506160][ T28] R13: 00007f6e4511f074 R14: 64626e2f7665642f R15: 0000000000022000 [ 859.514182][ T28] [ 859.517207][ T28] INFO: task syz-executor411:3656 blocked for more than 143 seconds. [ 859.525317][ T28] Not tainted 6.0.0-rc4-syzkaller-00062-g0066f1b0e275 #0 [ 859.532883][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 859.541591][ T28] task:syz-executor411 state:D stack:29536 pid: 3656 ppid: 3641 flags:0x00000004 [ 859.550807][ T28] Call Trace: [ 859.554139][ T28] [ 859.557107][ T28] __schedule+0xadf/0x52b0 [ 859.561649][ T28] ? io_schedule_timeout+0x140/0x140 [ 859.566964][ T28] schedule+0xda/0x1b0 [ 859.571021][ T28] schedule_preempt_disabled+0xf/0x20 [ 859.576684][ T28] __mutex_lock+0xa44/0x1350 [ 859.581291][ T28] ? nbd_ioctl+0x151/0xbd0 [ 859.585847][ T28] ? mutex_lock_io_nested+0x1190/0x1190 [ 859.591411][ T28] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 859.597556][ T28] ? bpf_lsm_capable+0x5/0x10 [ 859.602329][ T28] ? security_capable+0x8f/0xc0 [ 859.607218][ T28] nbd_ioctl+0x151/0xbd0 [ 859.611449][ T28] ? blkdev_bszset+0x1f0/0x1f0 [ 859.616277][ T28] ? nbd_start_device+0xc30/0xc30 [ 859.621326][ T28] ? __ct_user_exit+0xff/0x150 [ 859.626154][ T28] ? lock_downgrade+0x6e0/0x6e0 [ 859.631026][ T28] ? nbd_start_device+0xc30/0xc30 [ 859.636174][ T28] blkdev_ioctl+0x36e/0x800 [ 859.640697][ T28] ? blkdev_common_ioctl+0x1a30/0x1a30 [ 859.646210][ T28] ? bpf_lsm_file_ioctl+0x5/0x10 [ 859.651251][ T28] ? blkdev_common_ioctl+0x1a30/0x1a30 [ 859.656745][ T28] __x64_sys_ioctl+0x193/0x200 [ 859.661579][ T28] do_syscall_64+0x35/0xb0 [ 859.666006][ T28] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 859.671962][ T28] RIP: 0033:0x7f6e450cdee9 [ 859.676587][ T28] RSP: 002b:00007f6e45039308 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 859.685056][ T28] RAX: ffffffffffffffda RBX: 00007f6e45151428 RCX: 00007f6e450cdee9 [ 859.693081][ T28] RDX: 0000000000000005 RSI: 000000000000ab07 RDI: 0000000000000003 [ 859.701038][ T28] RBP: 00007f6e45151420 R08: 00007f6e45039700 R09: 0000000000000000 [ 859.709044][ T28] R10: 00007f6e45039700 R11: 0000000000000246 R12: 00007f6e4515142c [ 859.717049][ T28] R13: 00007f6e4511f074 R14: 64626e2f7665642f R15: 0000000000022000 [ 859.725083][ T28] [ 859.728199][ T28] [ 859.728199][ T28] Showing all locks held in the system: [ 859.735969][ T28] 1 lock held by rcu_tasks_kthre/12: [ 859.741358][ T28] #0: ffffffff8bf888b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 [ 859.751941][ T28] 1 lock held by rcu_tasks_trace/13: [ 859.757238][ T28] #0: ffffffff8bf885b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 [ 859.768234][ T28] 1 lock held by khungtaskd/28: [ 859.773163][ T28] #0: ffffffff8bf89400 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 859.783076][ T28] 2 locks held by getty/3284: [ 859.787865][ T28] #0: ffff88814abb4098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 [ 859.797920][ T28] #1: ffffc90002d232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef0/0x13e0 [ 859.808073][ T28] 1 lock held by syz-executor411/3654: [ 859.813585][ T28] #0: ffff88801decc198 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x151/0xbd0 [ 859.822965][ T28] 1 lock held by syz-executor411/3655: [ 859.828402][ T28] #0: ffff88801decc198 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x151/0xbd0 [ 859.837749][ T28] 1 lock held by syz-executor411/3656: [ 859.843226][ T28] #0: ffff88801decc198 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x151/0xbd0 [ 859.852684][ T28] [ 859.855013][ T28] ============================================= [ 859.855013][ T28] [ 859.863460][ T28] NMI backtrace for cpu 1 [ 859.867795][ T28] CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.0.0-rc4-syzkaller-00062-g0066f1b0e275 #0 [ 859.877592][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 859.887647][ T28] Call Trace: [ 859.890917][ T28] [ 859.893838][ T28] dump_stack_lvl+0xcd/0x134 [ 859.898437][ T28] nmi_cpu_backtrace.cold+0x46/0x14f [ 859.903818][ T28] ? lapic_can_unplug_cpu+0x80/0x80 [ 859.909011][ T28] nmi_trigger_cpumask_backtrace+0x206/0x250 [ 859.914986][ T28] watchdog+0xc18/0xf50 [ 859.919140][ T28] ? proc_dohung_task_timeout_secs+0x80/0x80 [ 859.925117][ T28] kthread+0x2e4/0x3a0 [ 859.929178][ T28] ? kthread_complete_and_exit+0x40/0x40 [ 859.935154][ T28] ret_from_fork+0x1f/0x30 [ 859.939577][ T28] [ 859.942686][ T28] Sending NMI from CPU 1 to CPUs 0: [ 859.948001][ C0] NMI backtrace for cpu 0 [ 859.948011][ C0] CPU: 0 PID: 41 Comm: kworker/u4:2 Not tainted 6.0.0-rc4-syzkaller-00062-g0066f1b0e275 #0 [ 859.948026][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 859.948043][ C0] Workqueue: events_unbound toggle_allocation_gate [ 859.948060][ C0] RIP: 0010:memcmp+0x68/0x1c0 [ 859.948077][ C0] Code: e5 eb 15 4b 8d 04 2c 48 83 c5 01 48 83 c3 01 48 39 c5 0f 84 1e 01 00 00 48 89 e8 48 89 ea 48 c1 e8 03 83 e2 07 42 0f b6 04 30 <38> d0 7f 08 84 c0 0f 85 24 01 00 00 48 89 da 48 89 d9 0f b6 45 00 [ 859.948090][ C0] RSP: 0018:ffffc90000b27ae0 EFLAGS: 00000202 [ 859.948100][ C0] RAX: 0000000000000000 RBX: ffffffff8f4f2364 RCX: 0000000000000003 [ 859.948109][ C0] RDX: 0000000000000002 RSI: ffffffff8f4f2360 RDI: ffffffff81c7f7ee [ 859.948118][ C0] RBP: ffffffff81c7f7f2 R08: 0000000000000001 R09: 0000000000000000 [ 859.948126][ C0] R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff81c7f7ee [ 859.948134][ C0] R13: 0000000000000005 R14: dffffc0000000000 R15: 0000000000000005 [ 859.948145][ C0] FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 859.948158][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 859.948167][ C0] CR2: 000055ffb9ec0600 CR3: 000000000bc8e000 CR4: 0000000000350ef0 [ 859.948176][ C0] Call Trace: [ 859.948180][ C0] [ 859.948185][ C0] ? __kmalloc+0xce/0x340 [ 859.948198][ C0] __jump_label_patch+0x173/0x330 [ 859.948217][ C0] arch_jump_label_transform_queue+0x63/0x100 [ 859.948235][ C0] __jump_label_update+0x12e/0x410 [ 859.948253][ C0] jump_label_update+0x32f/0x410 [ 859.948269][ C0] static_key_disable_cpuslocked+0x152/0x1b0 [ 859.948284][ C0] static_key_disable+0x16/0x20 [ 859.948299][ C0] toggle_allocation_gate+0x183/0x390 [ 859.948312][ C0] ? lock_release+0x780/0x780 [ 859.948325][ C0] ? wake_up_kfence_timer+0x20/0x20 [ 859.948338][ C0] ? lockdep_hardirqs_on+0x79/0x100 [ 859.948355][ C0] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 859.948373][ C0] process_one_work+0x991/0x1610 [ 859.948392][ C0] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 859.948409][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 859.948422][ C0] ? _raw_spin_lock_irq+0x41/0x50 [ 859.948439][ C0] worker_thread+0x665/0x1080 [ 859.948460][ C0] ? __kthread_parkme+0x15f/0x220 [ 859.948474][ C0] ? process_one_work+0x1610/0x1610 [ 859.948490][ C0] kthread+0x2e4/0x3a0 [ 859.948503][ C0] ? kthread_complete_and_exit+0x40/0x40 [ 859.948518][ C0] ret_from_fork+0x1f/0x30 [ 859.948537][ C0] [ 859.948995][ T28] Kernel panic - not syncing: hung_task: blocked tasks [ 860.201231][ T28] CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.0.0-rc4-syzkaller-00062-g0066f1b0e275 #0 [ 860.211033][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 860.221087][ T28] Call Trace: [ 860.224359][ T28] [ 860.227283][ T28] dump_stack_lvl+0xcd/0x134 [ 860.231877][ T28] panic+0x2c8/0x627 [ 860.235772][ T28] ? panic_print_sys_info.part.0+0x10b/0x10b [ 860.241752][ T28] ? irq_work_claim+0x76/0x90 [ 860.246422][ T28] ? lapic_can_unplug_cpu+0x80/0x80 [ 860.251616][ T28] ? irq_work_queue+0x29/0x80 [ 860.256286][ T28] ? watchdog.cold+0x130/0x158 [ 860.261061][ T28] watchdog.cold+0x141/0x158 [ 860.265646][ T28] ? proc_dohung_task_timeout_secs+0x80/0x80 [ 860.271624][ T28] kthread+0x2e4/0x3a0 [ 860.275685][ T28] ? kthread_complete_and_exit+0x40/0x40 [ 860.281490][ T28] ret_from_fork+0x1f/0x30 [ 860.285914][ T28] [ 860.289755][ T28] Kernel Offset: disabled [ 860.294072][ T28] Rebooting in 86400 seconds..