[ OK ] Reached target Login Prompts. [ 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 '10.128.1.22' (ECDSA) to the list of known hosts. syzkaller login: [ 33.647807] audit: type=1400 audit(1596531361.851:8): avc: denied { execmem } for pid=6357 comm="syz-executor003" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 33.891039] IPVS: ftp: loaded support on port[0] = 21 executing program [ 35.785707] kasan: CONFIG_KASAN_INLINE enabled [ 35.790797] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.798194] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 35.804513] Modules linked in: [ 35.807815] CPU: 1 PID: 1201 Comm: kworker/u5:0 Not tainted 4.14.191-syzkaller #0 [ 35.817010] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.826380] Workqueue: hci0 hci_rx_work [ 35.833301] task: ffff8880a7a36680 task.stack: ffff8880a7a38000 [ 35.839362] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x1f3/0x6c0 [ 35.845655] RSP: 0018:ffff8880a7a3fad0 EFLAGS: 00010202 [ 35.853639] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11014f46df0 [ 35.860906] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000010 [ 35.868179] RBP: ffff888088324140 R08: 0000000000000000 R09: 0000000000000003 [ 35.875453] R10: 0000000000000000 R11: ffff8880a7a36680 R12: ffff88809a321968 [ 35.883500] R13: 00000000000000c8 R14: ffff88808f92b04b R15: ffff88809a320a10 [ 35.890769] FS: 0000000000000000(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 35.907037] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.912925] CR2: 00007f02739e2f60 CR3: 0000000007c6a000 CR4: 00000000001406e0 [ 35.920217] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.927490] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.934774] Call Trace: [ 35.937362] ? static_obj+0x50/0x50 [ 35.940978] hci_event_packet+0x2592/0x7c7a [ 35.945365] ? trace_hardirqs_on+0x10/0x10 [ 35.949866] ? hci_cmd_complete_evt+0x9590/0x9590 [ 35.954692] ? trace_hardirqs_on+0x10/0x10 [ 35.958934] ? trace_hardirqs_on+0x10/0x10 [ 35.963185] ? debug_object_deactivate+0x1da/0x2e0 [ 35.968098] ? trace_hardirqs_on+0x10/0x10 [ 35.972328] ? skb_dequeue+0x120/0x170 [ 35.976201] ? mark_held_locks+0xa6/0xf0 [ 35.980620] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 35.985734] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 35.990747] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 35.995850] hci_rx_work+0x3e6/0x970 [ 35.999574] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 36.005030] process_one_work+0x793/0x14a0 [ 36.009259] ? work_busy+0x320/0x320 [ 36.012977] ? worker_thread+0x158/0xff0 [ 36.017105] ? _raw_spin_unlock_irq+0x24/0x80 [ 36.021576] worker_thread+0x5cc/0xff0 [ 36.025457] ? rescuer_thread+0xc80/0xc80 [ 36.029606] kthread+0x30d/0x420 [ 36.032959] ? kthread_create_on_node+0xd0/0xd0 [ 36.037605] ret_from_fork+0x24/0x30 [ 36.041307] 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 [ 36.061181] RIP: hci_phy_link_complete_evt.isra.0+0x1f3/0x6c0 RSP: ffff8880a7a3fad0 [ 36.071354] ---[ end trace 052a360967be549c ]--- [ 36.076120] Kernel panic - not syncing: Fatal exception [ 36.082902] Kernel Offset: disabled [ 36.086530] Rebooting in 86400 seconds..