[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.17' (ECDSA) to the list of known hosts. syzkaller login: [ 32.818330] audit: type=1400 audit(1598520665.992:8): avc: denied { execmem } for pid=6367 comm="syz-executor937" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 executing program [ 33.952697] IPVS: ftp: loaded support on port[0] = 21 [ 33.984212] kasan: CONFIG_KASAN_INLINE enabled [ 33.988912] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.998785] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 34.005030] Modules linked in: [ 34.008237] CPU: 1 PID: 6375 Comm: kworker/u5:2 Not tainted 4.14.195-syzkaller #0 [ 34.015827] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.025189] Workqueue: hci0 hci_rx_work [ 34.029137] task: ffff8880970b8600 task.stack: ffff8880976c0000 [ 34.035170] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x1f3/0x6c0 [ 34.041492] RSP: 0018:ffff8880976c7ad0 EFLAGS: 00010202 [ 34.046838] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11012e171e0 [ 34.054118] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000010 [ 34.061365] RBP: ffff888096dd2980 R08: 0000000000000000 R09: 0000000000000003 [ 34.068622] R10: 0000000000000000 R11: ffff8880970b8600 R12: ffff8880972597a8 [ 34.075912] R13: 00000000000000c9 R14: ffff8880a51a6a8b R15: ffff888097258850 [ 34.083166] FS: 0000000000000000(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 34.091369] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.097224] CR2: 00007ffecbbe7ff8 CR3: 00000000944c5000 CR4: 00000000001406e0 [ 34.104469] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.111712] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.118954] Call Trace: [ 34.121518] ? static_obj+0x50/0x50 [ 34.125122] hci_event_packet+0x19d6/0x7d1d [ 34.129415] ? trace_hardirqs_on+0x10/0x10 [ 34.133622] ? hci_cmd_complete_evt+0x9590/0x9590 [ 34.138437] ? trace_hardirqs_on+0x10/0x10 [ 34.142646] ? debug_object_deactivate+0x1da/0x2e0 [ 34.147660] ? trace_hardirqs_on+0x10/0x10 [ 34.151876] ? skb_dequeue+0x120/0x170 [ 34.155736] ? mark_held_locks+0xa6/0xf0 [ 34.159771] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 34.164872] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 34.169874] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 34.174949] hci_rx_work+0x3e6/0x970 [ 34.178636] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 34.184058] process_one_work+0x793/0x14a0 [ 34.188263] ? work_busy+0x320/0x320 [ 34.191970] ? worker_thread+0x158/0xff0 [ 34.196002] ? _raw_spin_unlock_irq+0x24/0x80 [ 34.200483] worker_thread+0x5cc/0xff0 [ 34.204347] ? rescuer_thread+0xc80/0xc80 [ 34.208466] kthread+0x30d/0x420 [ 34.211804] ? kthread_create_on_node+0xd0/0xd0 [ 34.216464] ret_from_fork+0x24/0x30 [ 34.220150] Code: fa 48 c1 ea 03 80 3c 02 00 0f 85 dd 04 00 00 48 8b 9d 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 a0 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 [ 34.239256] RIP: hci_phy_link_complete_evt.isra.0+0x1f3/0x6c0 RSP: ffff8880976c7ad0 [ 34.256944] ---[ end trace 77dec0bcd2f6117e ]--- [ 34.261747] Kernel panic - not syncing: Fatal exception [ 34.268274] Kernel Offset: disabled [ 34.271884] Rebooting in 86400 seconds..