[ OK ] Started Getty on tty1. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.81' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.699627] IPVS: ftp: loaded support on port[0] = 21 [ 29.733268] kasan: CONFIG_KASAN_INLINE enabled [ 29.737986] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.747524] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 29.753757] Modules linked in: [ 29.756955] CPU: 1 PID: 7991 Comm: kworker/u5:1 Not tainted 4.14.203-syzkaller #0 [ 29.764558] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.774046] Workqueue: hci0 hci_rx_work [ 29.778021] task: ffff8880b3396380 task.stack: ffff8880b2e48000 [ 29.784120] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x201/0x840 [ 29.790478] RSP: 0018:ffff8880b2e4fae0 EFLAGS: 00010202 [ 29.795825] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11016672d90 [ 29.803085] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000010 [ 29.810331] RBP: ffff88809242cb10 R08: 0000000000000000 R09: 0000000000000003 [ 29.817594] R10: 0000000000000000 R11: ffff8880b3396380 R12: ffff88809242da68 [ 29.824842] R13: 00000000000000c9 R14: ffff8880b4770a4b R15: ffff8880954e62c0 [ 29.832110] FS: 0000000000000000(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 29.840314] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.846169] CR2: 00007f4a27d9c6c0 CR3: 00000000a212f000 CR4: 00000000001406e0 [ 29.853416] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.860660] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.867908] Call Trace: [ 29.870501] hci_event_packet+0x224b/0x750f [ 29.874800] ? trace_hardirqs_on+0x10/0x10 [ 29.879025] ? check_preemption_disabled+0x35/0x240 [ 29.884065] ? hci_cmd_complete_evt+0xb490/0xb490 [ 29.888894] ? trace_hardirqs_on+0x10/0x10 [ 29.893112] ? debug_object_deactivate+0x1da/0x2e0 [ 29.898021] ? skb_dequeue+0x125/0x180 [ 29.901884] ? mark_held_locks+0xa6/0xf0 [ 29.905936] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 29.911013] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 29.916015] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 29.921092] hci_rx_work+0x427/0xb40 [ 29.924800] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.930227] process_one_work+0x793/0x14a0 [ 29.934439] ? work_busy+0x320/0x320 [ 29.938125] ? worker_thread+0x158/0xff0 [ 29.942160] ? _raw_spin_unlock_irq+0x24/0x80 [ 29.946629] worker_thread+0x5cc/0xff0 [ 29.950493] ? rescuer_thread+0xc80/0xc80 [ 29.954613] kthread+0x30d/0x420 [ 29.957952] ? kthread_create_on_node+0xd0/0xd0 [ 29.962738] ret_from_fork+0x24/0x30 [ 29.966441] Code: fa 48 c1 ea 03 80 3c 02 00 0f 85 85 05 00 00 49 8b 9f 40 08 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 69 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 [ 29.985518] RIP: hci_phy_link_complete_evt.isra.0+0x201/0x840 RSP: ffff8880b2e4fae0 [ 29.999798] ---[ end trace 938d0aafcd0b8d19 ]--- [ 30.004575] Kernel panic - not syncing: Fatal exception [ 30.010790] Kernel Offset: disabled [ 30.014637] Rebooting in 86400 seconds..