[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.42' (ECDSA) to the list of known hosts. syzkaller login: [ 80.564659] IPVS: ftp: loaded support on port[0] = 21 [ 80.656777] IPVS: ftp: loaded support on port[0] = 21 [ 80.711206] IPVS: ftp: loaded support on port[0] = 21 [ 80.765749] IPVS: ftp: loaded support on port[0] = 21 [ 80.839318] IPVS: ftp: loaded support on port[0] = 21 [ 80.939757] IPVS: ftp: loaded support on port[0] = 21 [ 82.601339] Bluetooth: hci4 command 0x0409 tx timeout [ 82.606993] Bluetooth: hci5 command 0x0409 tx timeout [ 82.620900] Bluetooth: hci0 command 0x0409 tx timeout [ 82.626153] Bluetooth: hci1 command 0x0409 tx timeout [ 82.649728] Bluetooth: hci3 command 0x0409 tx timeout [ 82.663443] Bluetooth: hci2 command 0x0409 tx timeout [ 84.680512] Bluetooth: hci2 command 0x041b tx timeout [ 84.686887] Bluetooth: hci3 command 0x041b tx timeout [ 84.703033] Bluetooth: hci1 command 0x041b tx timeout [ 84.720186] Bluetooth: hci0 command 0x041b tx timeout [ 84.738082] Bluetooth: hci5 command 0x041b tx timeout [ 84.758110] Bluetooth: hci4 command 0x041b tx timeout [ 108.306948] watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [kworker/u5:3:8015] [ 108.314606] Modules linked in: [ 108.317776] irq event stamp: 196410 [ 108.321386] hardirqs last enabled at (196409): [] kvm_wait+0x14b/0x240 [ 108.329682] hardirqs last disabled at (196410): [] apic_timer_interrupt+0x8e/0xa0 [ 108.338844] softirqs last enabled at (196406): [] __do_softirq+0x68b/0x9ff [ 108.347486] softirqs last disabled at (196395): [] irq_exit+0x193/0x240 [ 108.355864] CPU: 0 PID: 8015 Comm: kworker/u5:3 Not tainted 4.14.231-syzkaller #0 [ 108.364066] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 108.373454] Workqueue: hci4 connectable_update_work [ 108.378449] task: ffff8880b2f90200 task.stack: ffff8880b2c78000 [ 108.384486] RIP: 0010:native_safe_halt+0xe/0x10 [ 108.389130] RSP: 0000:ffff8880b2c7fab0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 [ 108.396850] RAX: 1ffffffff11e125c RBX: ffffffff89dd442c RCX: 1ffff110165f2169 [ 108.404098] RDX: dffffc0000000000 RSI: ffff8880b2f90b28 RDI: ffff8880b2f90a84 [ 108.411345] RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000000 [ 108.418596] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000286 [ 108.425857] R13: dffffc0000000000 R14: ffffffff89dd442d R15: ffffed10174855d8 [ 108.433113] FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 108.441320] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 108.447182] CR2: 0000000020000000 CR3: 000000009a580000 CR4: 00000000001406f0 [ 108.454454] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 108.461791] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 108.469040] Call Trace: [ 108.471613] kvm_wait+0x179/0x240 [ 108.475051] __pv_queued_spin_lock_slowpath+0x722/0x910 [ 108.480394] ? hci_send_to_channel+0x3c/0x200 [ 108.484868] queued_read_lock_slowpath+0x150/0x190 [ 108.489776] hci_send_to_channel+0x3c/0x200 [ 108.494093] hci_send_monitor_ctrl_event+0x3dd/0x500 [ 108.499193] mgmt_send_event+0x2b3/0x330 [ 108.503236] mgmt_set_connectable_complete+0x299/0x310 [ 108.508492] ? mgmt_set_discoverable_complete+0x430/0x430 [ 108.514027] connectable_update_work+0xbf/0xf0 [ 108.518608] ? discoverable_update_work+0xf0/0xf0 [ 108.523433] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 108.528862] process_one_work+0x793/0x14a0 [ 108.533163] ? work_busy+0x320/0x320 [ 108.536853] ? worker_thread+0x158/0xff0 [ 108.540913] ? _raw_spin_unlock_irq+0x24/0x80 [ 108.545415] worker_thread+0x5cc/0xff0 [ 108.549287] ? rescuer_thread+0xc80/0xc80 [ 108.553414] kthread+0x30d/0x420 [ 108.556758] ? kthread_create_on_node+0xd0/0xd0 [ 108.561404] ret_from_fork+0x24/0x30 [ 108.565099] Code: 2a 5c fa e9 4f ff ff ff 48 89 ef e8 8d 2a 5c fa eb 93 90 90 90 90 90 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 94 e4 64 00 fb f4 90 e9 07 00 00 00 0f 00 2d 84 e4 64 00 f4 c3 90 90 41 55 41 [ 108.584233] Kernel panic - not syncing: softlockup: hung tasks [ 108.590183] CPU: 0 PID: 8015 Comm: kworker/u5:3 Tainted: G L 4.14.231-syzkaller #0 [ 108.599010] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 108.608347] Workqueue: hci4 connectable_update_work [ 108.613340] Call Trace: [ 108.615903] [ 108.618033] dump_stack+0x1b2/0x281 [ 108.621639] panic+0x1f9/0x42d [ 108.624808] ? add_taint.cold+0x16/0x16 [ 108.628783] watchdog_timer_fn.cold+0x16/0x25 [ 108.633256] __hrtimer_run_queues+0x30b/0xc80 [ 108.637730] ? watchdog+0x50/0x50 [ 108.641161] ? retrigger_next_event+0x310/0x310 [ 108.645806] ? ktime_get_update_offsets_now+0x272/0x3f0 [ 108.651149] hrtimer_interrupt+0x1e6/0x5e0 [ 108.655368] smp_apic_timer_interrupt+0x117/0x5e0 [ 108.660188] apic_timer_interrupt+0x93/0xa0 [ 108.664484] [ 108.666701] RIP: 0010:native_safe_halt+0xe/0x10 [ 108.671373] RSP: 0000:ffff8880b2c7fab0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 [ 108.679058] RAX: 1ffffffff11e125c RBX: ffffffff89dd442c RCX: 1ffff110165f2169 [ 108.686304] RDX: dffffc0000000000 RSI: ffff8880b2f90b28 RDI: ffff8880b2f90a84 [ 108.693992] RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000000 [ 108.701245] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000286 [ 108.708492] R13: dffffc0000000000 R14: ffffffff89dd442d R15: ffffed10174855d8 [ 108.715752] kvm_wait+0x179/0x240 [ 108.719186] __pv_queued_spin_lock_slowpath+0x722/0x910 [ 108.724529] ? hci_send_to_channel+0x3c/0x200 [ 108.729003] queued_read_lock_slowpath+0x150/0x190 [ 108.733911] hci_send_to_channel+0x3c/0x200 [ 108.738213] hci_send_monitor_ctrl_event+0x3dd/0x500 [ 108.743318] mgmt_send_event+0x2b3/0x330 [ 108.747361] mgmt_set_connectable_complete+0x299/0x310 [ 108.752629] ? mgmt_set_discoverable_complete+0x430/0x430 [ 108.758145] connectable_update_work+0xbf/0xf0 [ 108.762705] ? discoverable_update_work+0xf0/0xf0 [ 108.767531] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 108.772961] process_one_work+0x793/0x14a0 [ 108.777198] ? work_busy+0x320/0x320 [ 108.780890] ? worker_thread+0x158/0xff0 [ 108.784929] ? _raw_spin_unlock_irq+0x24/0x80 [ 108.789403] worker_thread+0x5cc/0xff0 [ 108.793293] ? rescuer_thread+0xc80/0xc80 [ 108.797432] kthread+0x30d/0x420 [ 108.800776] ? kthread_create_on_node+0xd0/0xd0 [ 108.805421] ret_from_fork+0x24/0x30 [ 108.809887] Kernel Offset: disabled [ 108.813563] Rebooting in 86400 seconds..