[ 97.810265][ T8802] kmalloc-96 1786KB 1816KB [ 97.816321][ T8802] kmalloc-64 4478KB 4548KB [ 97.823211][ T8802] kmalloc-32 362KB 576KB [ 97.829824][ T8802] kmalloc-16 282KB 296KB [ 97.835872][ T8802] kmalloc-8 469KB 478KB [ 97.842993][ T8802] kmem_cache_node 194KB 196KB [ 97.849617][ T8802] kmem_cache 165KB 165KB [ 97.855662][ T8802] oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0-1,global_oom,task_memcg=/,task=syz-execprog,pid=8802,uid=0 [ 97.871175][ T8802] Out of memory (oom_kill_allocating_task): Killed process 8799 (syz-execprog) total-vm:847824kB, anon-rss:16112kB, file-rss:0kB, shmem-rss:0kB, UID:0 pgtables:188kB oom_score_adj:0 [ 97.915769][ T1655] oom_reaper: reaped process 8799 (syz-execprog), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB Warning: Permanently added '10.128.1.3' (ECDSA) to the list of known hosts. [ 126.870528][ T3261] ieee802154 phy0 wpan0: encryption failed: -22 [ 126.877050][ T3261] ieee802154 phy1 wpan1: encryption failed: -22 [ 188.313243][ T3261] ieee802154 phy0 wpan0: encryption failed: -22 [ 188.319745][ T3261] ieee802154 phy1 wpan1: encryption failed: -22 [ 249.759487][ T3261] ieee802154 phy0 wpan0: encryption failed: -22 [ 249.765887][ T3261] ieee802154 phy1 wpan1: encryption failed: -22 [ 251.038727][ T1552] INFO: task kworker/u4:6:10223 blocked for more than 143 seconds. [ 251.047023][ T1552] Not tainted 5.14.0-rc7-syzkaller #0 [ 251.068637][ T1552] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 251.077435][ T1552] task:kworker/u4:6 state:D stack:26072 pid:10223 ppid: 2 flags:0x00004000 [ 251.108625][ T1552] Workqueue: events_unbound fsnotify_connector_destroy_workfn [ 251.116271][ T1552] Call Trace: [ 251.128618][ T1552] __schedule+0x907/0x26b0 [ 251.133032][ T1552] ? io_schedule_timeout+0x140/0x140 [ 251.138292][ T1552] ? lock_chain_count+0x20/0x20 [ 251.158618][ T1552] schedule+0xd3/0x270 [ 251.162943][ T1552] schedule_timeout+0x19d/0x250 [ 251.167772][ T1552] ? usleep_range+0x150/0x150 [ 251.178613][ T1552] ? wait_for_completion+0x16e/0x280 [ 251.184403][ T1552] ? mark_held_locks+0x9f/0xe0 [ 251.208610][ T1552] ? rwlock_bug.part.0+0x90/0x90 [ 251.213748][ T1552] ? lockdep_hardirqs_on_prepare+0x17b/0x400 [ 251.228612][ T1552] ? _raw_spin_unlock_irq+0x1f/0x40 [ 251.233794][ T1552] wait_for_completion+0x176/0x280 [ 251.248616][ T1552] ? bit_wait_io_timeout+0x160/0x160 [ 251.253880][ T1552] ? srcu_gp_start_if_needed+0x1dc/0xbc0 [ 251.268622][ T1552] __synchronize_srcu+0x1f4/0x290 [ 251.273807][ T1552] ? call_srcu+0xc0/0xc0 [ 251.278022][ T1552] ? rcu_tasks_pregp_step+0x10/0x10 [ 251.298616][ T1552] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 251.304494][ T1552] ? lockdep_hardirqs_on+0x79/0x100 [ 251.318619][ T1552] ? _raw_spin_unlock_irqrestore+0x3d/0x70 [ 251.324411][ T1552] fsnotify_connector_destroy_workfn+0x4a/0xa0 [ 251.348616][ T1552] process_one_work+0x84c/0x13d0 [ 251.353650][ T1552] ? lock_release+0x720/0x720 [ 251.358306][ T1552] ? pwq_dec_nr_in_flight+0x2b0/0x2b0 [ 251.378650][ T1552] ? rwlock_bug.part.0+0x90/0x90 [ 251.383584][ T1552] ? _raw_spin_lock_irq+0x41/0x50 [ 251.398617][ T1552] worker_thread+0x598/0x1040 [ 251.403292][ T1552] ? process_one_work+0x13d0/0x13d0 [ 251.408554][ T1552] kthread+0x38b/0x460 [ 251.428611][ T1552] ? _raw_spin_unlock_irq+0x1f/0x40 [ 251.433794][ T1552] ? set_kthread_struct+0x100/0x100 [ 251.448615][ T1552] ret_from_fork+0x1f/0x30 [ 251.453170][ T1552] [ 251.453170][ T1552] Showing all locks held in the system: [ 251.468634][ T1552] 2 locks held by kworker/u4:1/10: [ 251.473731][ T1552] #0: ffff88800fc69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x771/0x13d0 [ 251.508614][ T1552] #1: ffffc90000cf7db8 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x79e/0x13d0 [ 251.528645][ T1552] 5 locks held by kworker/u4:3/183: [ 251.533838][ T1552] 1 lock held by khungtaskd/1552: [ 251.548625][ T1552] #0: ffffffff8ab72940 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 251.568626][ T1552] 1 lock held by khugepaged/1661: [ 251.573647][ T1552] #0: ffffffff8ac4fcc8 (lock#6){+.+.}-{3:3}, at: __lru_add_drain_all+0x5a/0x6e0 [ 251.598659][ T1552] 3 locks held by kworker/0:3/3167: [ 251.603895][ T1552] 1 lock held by in:imklog/8092: [ 251.618648][ T1552] #0: ffff88802bcdc0f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x9c/0xb0 [ 251.627709][ T1552] 3 locks held by kworker/1:3/8666: [ 251.648643][ T1552] 3 locks held by syz-executor.2/8823: [ 251.654141][ T1552] #0: ffff88802c69cff0 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0xa8/0xee0 [ 251.678636][ T1552] #1: ffff88802c69c078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_do_close+0x1d4/0xee0 [ 251.688109][ T1552] #2: ffffffff8c401dc8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xb9/0x210 [ 251.718624][ T1552] 4 locks held by syz-executor.3/8825: [ 251.724277][ T1552] #0: ffff88802cbbcff0 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0xa8/0xee0 [ 251.748630][ T1552] #1: ffff88802cbbc078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_do_close+0x1d4/0xee0 [ 251.758196][ T1552] #2: ffffffff8c401dc8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xb9/0x210 [ 251.788626][ T1552] #3: ffffffff8ab7bda8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2d5/0x620 [ 251.808620][ T1552] 3 locks held by syz-executor.5/8826: [ 251.814244][ T1552] #0: ffff88802cbb8ff0 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0xa8/0xee0 [ 251.838623][ T1552] #1: ffff88802cbb8078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_do_close+0x1d4/0xee0 [ 251.848195][ T1552] #2: ffffffff8c401dc8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xb9/0x210 [ 251.878621][ T1552] 3 locks held by syz-executor.4/8830: [ 251.884315][ T1552] #0: ffff88801fa60ff0 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0xa8/0xee0 [ 251.908627][ T1552] #1: ffff88801fa60078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_do_close+0x1d4/0xee0 [ 251.918071][ T1552] #2: ffffffff8c401dc8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xb9/0x210 [ 251.964025][ T1552] 3 locks held by syz-executor.0/8832: [ 251.970104][ T1552] #0: ffff88801fa8cff0 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0xa8/0xee0 [ 251.998695][ T1552] #1: ffff88801fa8c078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_do_close+0x1d4/0xee0 [ 252.018657][ T1552] #2: ffffffff8c401dc8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xb9/0x210 [ 252.038672][ T1552] 3 locks held by kworker/1:6/10107: [ 252.044025][ T1552] #0: ffff88800fc64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x771/0x13d0 [ 252.083896][ T1552] #1: ffffc9000aa37db8 (free_ipc_work){+.+.}-{0:0}, at: process_one_work+0x79e/0x13d0 [ 252.103217][ T1552] #2: ffffffff8ab7bda8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2d5/0x620 [ 252.128611][ T1552] 2 locks held by kworker/u4:6/10223: [ 252.134223][ T1552] #0: ffff88800fc69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x771/0x13d0 [ 252.158612][ T1552] #1: ffffc9008af77db8 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x79e/0x13d0 [ 252.178621][ T1552] 1 lock held by syz-executor672/10358: [ 252.184156][ T1552] #0: ffffffff8ac8eca8 (pcpu_drain_mutex){+.+.}-{3:3}, at: __drain_all_pages+0x4f/0x6c0 [ 252.205310][ T1552] [ 252.207638][ T1552] ============================================= [ 252.207638][ T1552] [ 252.228622][ T1552] NMI backtrace for cpu 1 [ 252.233044][ T1552] CPU: 1 PID: 1552 Comm: khungtaskd Not tainted 5.14.0-rc7-syzkaller #0 [ 252.241430][ T1552] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 252.251463][ T1552] Call Trace: [ 252.254723][ T1552] dump_stack_lvl+0x57/0x7d [ 252.259208][ T1552] nmi_cpu_backtrace.cold+0x30/0x99 [ 252.264382][ T1552] ? lapic_can_unplug_cpu+0x80/0x80 [ 252.269557][ T1552] nmi_trigger_cpumask_backtrace+0x11f/0x170 [ 252.275696][ T1552] watchdog+0x92e/0xc40 [ 252.279829][ T1552] ? reset_hung_task_detector+0x20/0x20 [ 252.285434][ T1552] kthread+0x38b/0x460 [ 252.289564][ T1552] ? _raw_spin_unlock_irq+0x1f/0x40 [ 252.294737][ T1552] ? set_kthread_struct+0x100/0x100 [ 252.299907][ T1552] ret_from_fork+0x1f/0x30 [ 252.304670][ T1552] Sending NMI from CPU 1 to CPUs 0: [ 252.310522][ C0] NMI backtrace for cpu 0 [ 252.310525][ C0] CPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 5.14.0-rc7-syzkaller #0 [ 252.310526][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 252.310528][ C0] RIP: 0010:__lock_acquire+0x1049/0x5410 [ 252.310529][ C0] Code: 10 be 08 00 00 00 48 8d 43 3f 48 85 db 48 0f 49 c3 48 c1 f8 06 48 8d 3c c5 e0 58 dd 8e e8 ff b4 53 00 48 0f a3 1d 27 b9 8a 0d <0f> 82 c7 f8 ff ff e8 2c 50 2e 02 85 c0 0f 84 f1 fd ff ff 48 c7 c0 [ 252.310531][ C0] RSP: 0018:ffffc90000d27ac0 EFLAGS: 00000047 [ 252.310534][ C0] RAX: 0000000000000001 RBX: 000000000000005c RCX: ffffffff81529fb1 [ 252.310535][ C0] RDX: fffffbfff1dbab1e RSI: 0000000000000008 RDI: ffffffff8edd58e8 [ 252.310537][ C0] RBP: ffff888010f78a12 R08: 0000000000000000 R09: ffffffff8edd58ef [ 252.310538][ C0] R10: fffffbfff1dbab1d R11: 000000000007a088 R12: ffff888010f789f0 [ 252.310539][ C0] R13: ffff888010f78000 R14: 0000000000000000 R15: 0000000000000002 [ 252.310540][ C0] FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 252.310542][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 252.310543][ C0] CR2: 00007f842a801000 CR3: 000000000a88e000 CR4: 0000000000350ef0 [ 252.310544][ C0] Call Trace: [ 252.310545][ C0] ? find_held_lock+0x2d/0x110 [ 252.310546][ C0] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 252.310547][ C0] ? call_timer_fn+0x1a4/0x4a0 [ 252.310548][ C0] ? lock_downgrade+0x6e0/0x6e0 [ 252.310548][ C0] lock_acquire+0x1ab/0x510 [ 252.310549][ C0] ? __run_timers.part.0+0x3b8/0x890 [ 252.310550][ C0] ? lock_release+0x720/0x720 [ 252.310551][ C0] ? add_timer_on+0x410/0x410 [ 252.310552][ C0] ? lock_downgrade+0x6e0/0x6e0 [ 252.310553][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 252.310554][ C0] ? queue_work_node+0x190/0x190 [ 252.310555][ C0] _raw_spin_lock+0x2a/0x40 [ 252.310556][ C0] ? __run_timers.part.0+0x3b8/0x890 [ 252.310557][ C0] __run_timers.part.0+0x3b8/0x890 [ 252.310558][ C0] ? call_timer_fn+0x4a0/0x4a0 [ 252.310559][ C0] ? smpboot_thread_fn+0x66/0x8c0 [ 252.310560][ C0] ? kvm_sched_clock_read+0x14/0x40 [ 252.310561][ C0] ? sched_clock_cpu+0x15/0x1f0 [ 252.310562][ C0] run_timer_softirq+0x9c/0x190 [ 252.310563][ C0] __do_softirq+0x29b/0x9c2 [ 252.310564][ C0] ? __irq_exit_rcu+0x1c0/0x1c0 [ 252.310565][ C0] ? smpboot_thread_fn+0x66/0x8c0 [ 252.310565][ C0] run_ksoftirqd+0x2d/0x60 [ 252.310566][ C0] smpboot_thread_fn+0x548/0x8c0 [ 252.310567][ C0] ? __smpboot_create_thread.part.0+0x2f0/0x2f0 [ 252.310568][ C0] kthread+0x38b/0x460 [ 252.310569][ C0] ? _raw_spin_unlock_irq+0x1f/0x40 [ 252.310570][ C0] ? set_kthread_struct+0x100/0x100 [ 252.310571][ C0] ret_from_fork+0x1f/0x30 [ 252.398616][ T1552] Kernel panic - not syncing: hung_task: blocked tasks [ 252.581447][ T1552] CPU: 1 PID: 1552 Comm: khungtaskd Not tainted 5.14.0-rc7-syzkaller #0 [ 252.589744][ T1552] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 252.599798][ T1552] Call Trace: [ 252.603057][ T1552] dump_stack_lvl+0x57/0x7d [ 252.607535][ T1552] panic+0x256/0x4eb [ 252.611660][ T1552] ? __warn_printk+0xee/0xee [ 252.616218][ T1552] ? lapic_can_unplug_cpu+0x80/0x80 [ 252.621385][ T1552] ? preempt_schedule_thunk+0x16/0x18 [ 252.626732][ T1552] watchdog.cold+0x11/0x157 [ 252.631214][ T1552] ? reset_hung_task_detector+0x20/0x20 [ 252.636726][ T1552] kthread+0x38b/0x460 [ 252.640762][ T1552] ? _raw_spin_unlock_irq+0x1f/0x40 [ 252.645929][ T1552] ? set_kthread_struct+0x100/0x100 [ 252.651095][ T1552] ret_from_fork+0x1f/0x30 [ 252.662480][ T1552] Kernel Offset: disabled [ 252.666871][ T1552] Rebooting in 86400 seconds..