[ 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 '10.128.0.214' (ECDSA) to the list of known hosts. syzkaller login: [ 41.339196] audit: type=1400 audit(1596399020.025:8): avc: denied { execmem } for pid=6450 comm="syz-executor274" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 41.354111] IPVS: ftp: loaded support on port[0] = 21 executing program [ 42.436154] kasan: CONFIG_KASAN_INLINE enabled [ 42.440849] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.450584] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 42.456838] CPU: 0 PID: 6477 Comm: kworker/u5:2 Not tainted 4.19.136-syzkaller #0 [ 42.464567] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.473943] Workqueue: hci0 hci_rx_work [ 42.477900] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x24a/0x7a0 [ 42.484194] Code: 48 c1 ea 03 80 3c 02 00 0f 85 60 05 00 00 48 8b 9d 28 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 23 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b [ 42.503075] RSP: 0018:ffff8880950cfa78 EFLAGS: 00010202 [ 42.508699] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff867c041f [ 42.515964] RDX: 0000000000000002 RSI: ffffffff867c042c RDI: 0000000000000010 [ 42.523217] RBP: ffff888084e8ee40 R08: 0000000000000000 R09: 0000000000000000 [ 42.530754] R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 [ 42.538013] R13: ffff8880a4985dc0 R14: 00000000000000c8 R15: ffff8880a4984e90 [ 42.545397] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 42.553614] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.559471] CR2: 00007ff36f25f6c0 CR3: 0000000093d3c000 CR4: 00000000001406f0 [ 42.566720] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.573984] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.581231] Call Trace: [ 42.584297] hci_event_packet+0x1973/0x858f [ 42.588597] ? mark_held_locks+0xf0/0xf0 [ 42.592638] ? __lock_acquire+0x6de/0x3ff0 [ 42.596852] ? hci_cmd_complete_evt+0xb5e0/0xb5e0 [ 42.601671] ? __update_load_avg_se+0x5ec/0xa00 [ 42.606405] ? debug_object_deactivate+0x1f9/0x2e0 [ 42.611314] ? mark_held_locks+0xa6/0xf0 [ 42.615355] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 42.620438] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 42.625172] hci_rx_work+0x46b/0xa90 [ 42.628881] process_one_work+0x864/0x1570 [ 42.633634] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 42.638335] worker_thread+0x64c/0x1130 [ 42.642291] ? __kthread_parkme+0xfd/0x1b0 [ 42.646515] ? process_one_work+0x1570/0x1570 [ 42.651778] kthread+0x30b/0x410 [ 42.655151] ? kthread_park+0x180/0x180 [ 42.659455] ret_from_fork+0x24/0x30 [ 42.663252] Modules linked in: [ 42.667009] ---[ end trace fd1e7de13da80971 ]--- [ 42.671796] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x24a/0x7a0 [ 42.678546] Code: 48 c1 ea 03 80 3c 02 00 0f 85 60 05 00 00 48 8b 9d 28 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 23 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b [ 42.699231] RSP: 0018:ffff8880950cfa78 EFLAGS: 00010202 [ 42.704712] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff867c041f [ 42.712485] RDX: 0000000000000002 RSI: ffffffff867c042c RDI: 0000000000000010 [ 42.719748] RBP: ffff888084e8ee40 R08: 0000000000000000 R09: 0000000000000000 [ 42.727154] R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 [ 42.734805] R13: ffff8880a4985dc0 R14: 00000000000000c8 R15: ffff8880a4984e90 [ 42.742108] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 42.753434] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.760197] CR2: 00007ff36f25f6c0 CR3: 0000000093d3c000 CR4: 00000000001406f0 [ 42.767942] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.775342] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.782920] Kernel panic - not syncing: Fatal exception [ 42.789646] Kernel Offset: disabled [ 42.793265] Rebooting in 86400 seconds..