[ 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 '10.128.0.161' (ECDSA) to the list of known hosts. syzkaller login: [ 33.324846] audit: type=1400 audit(1596477950.009:8): avc: denied { execmem } for pid=6341 comm="syz-executor712" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 33.594581] IPVS: ftp: loaded support on port[0] = 21 executing program [ 35.458563] kasan: CONFIG_KASAN_INLINE enabled [ 35.469516] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.480582] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 35.486830] Modules linked in: [ 35.490002] CPU: 0 PID: 6371 Comm: kworker/u5:2 Not tainted 4.14.191-syzkaller #0 [ 35.497623] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.507050] Workqueue: hci0 hci_rx_work [ 35.510997] task: ffff8880975c8680 task.stack: ffff888097a30000 [ 35.517141] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x1f3/0x6c0 [ 35.523530] RSP: 0018:ffff888097a37ad0 EFLAGS: 00010202 [ 35.528867] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11012eb91f0 [ 35.536191] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000010 [ 35.543436] RBP: ffff88809744cbc0 R08: 0000000000000000 R09: 0000000000000003 [ 35.550859] R10: 0000000000000000 R11: ffff8880975c8680 R12: ffff888098229668 [ 35.558165] R13: 00000000000000c8 R14: ffff88809ad3fc8b R15: ffff888098228710 [ 35.565415] FS: 0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 35.573614] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.579475] CR2: 000056352b2f6af0 CR3: 00000000a5463000 CR4: 00000000001406f0 [ 35.586812] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.594070] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.601342] Call Trace: [ 35.604040] ? static_obj+0x50/0x50 [ 35.607659] hci_event_packet+0x2592/0x7c7a [ 35.611966] ? trace_hardirqs_on+0x10/0x10 [ 35.616188] ? hci_cmd_complete_evt+0x9590/0x9590 [ 35.621007] ? trace_hardirqs_on+0x10/0x10 [ 35.625220] ? debug_object_deactivate+0x1da/0x2e0 [ 35.630124] ? trace_hardirqs_on+0x10/0x10 [ 35.634339] ? skb_dequeue+0x120/0x170 [ 35.638205] ? mark_held_locks+0xa6/0xf0 [ 35.642266] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 35.647366] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 35.652358] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 35.657543] hci_rx_work+0x3e6/0x970 [ 35.661254] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 35.666684] process_one_work+0x793/0x14a0 [ 35.670897] ? work_busy+0x320/0x320 [ 35.674600] ? worker_thread+0x158/0xff0 [ 35.678661] ? _raw_spin_unlock_irq+0x24/0x80 [ 35.683130] worker_thread+0x5cc/0xff0 [ 35.686997] ? rescuer_thread+0xc80/0xc80 [ 35.691157] kthread+0x30d/0x420 [ 35.694619] ? kthread_create_on_node+0xd0/0xd0 [ 35.699271] ret_from_fork+0x24/0x30 [ 35.702959] 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 [ 35.722330] RIP: hci_phy_link_complete_evt.isra.0+0x1f3/0x6c0 RSP: ffff888097a37ad0 [ 35.732144] ---[ end trace b6a73152be312e83 ]--- [ 35.736909] Kernel panic - not syncing: Fatal exception [ 35.743692] Kernel Offset: disabled [ 35.747313] Rebooting in 86400 seconds..