[ 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 '10.128.1.1' (ECDSA) to the list of known hosts. syzkaller login: [ 39.027398] audit: type=1400 audit(1596398400.667:8): avc: denied { execmem } for pid=6467 comm="syz-executor937" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 39.045800] IPVS: ftp: loaded support on port[0] = 21 executing program [ 40.142868] kasan: CONFIG_KASAN_INLINE enabled [ 40.148119] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 40.156458] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 40.162694] CPU: 0 PID: 6497 Comm: kworker/u5:2 Not tainted 4.19.136-syzkaller #0 [ 40.170292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.179631] Workqueue: hci0 hci_rx_work [ 40.183629] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x24a/0x7a0 [ 40.189923] 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 [ 40.208803] RSP: 0018:ffff88808d63fa78 EFLAGS: 00010202 [ 40.214176] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff867c041f [ 40.221421] RDX: 0000000000000002 RSI: ffffffff867c042c RDI: 0000000000000010 [ 40.228664] RBP: ffff88808d634340 R08: 0000000000000000 R09: 0000000000000000 [ 40.235908] R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 [ 40.243152] R13: ffff888084dadf80 R14: 00000000000000c8 R15: ffff888084dad050 [ 40.250396] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 40.258596] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.264452] CR2: 0000000020000000 CR3: 0000000094478000 CR4: 00000000001406f0 [ 40.271726] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.278983] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.286226] Call Trace: [ 40.288795] hci_event_packet+0x1973/0x858f [ 40.293095] ? mark_held_locks+0xf0/0xf0 [ 40.297133] ? hci_cmd_complete_evt+0xb5e0/0xb5e0 [ 40.301949] ? update_curr+0x3b9/0x870 [ 40.305854] ? debug_object_deactivate+0x1f9/0x2e0 [ 40.310763] ? mark_held_locks+0xa6/0xf0 [ 40.314803] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 40.319881] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 40.324439] hci_rx_work+0x46b/0xa90 [ 40.328129] process_one_work+0x864/0x1570 [ 40.332362] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 40.337009] worker_thread+0x64c/0x1130 [ 40.340963] ? __kthread_parkme+0xfd/0x1b0 [ 40.345173] ? process_one_work+0x1570/0x1570 [ 40.349642] kthread+0x30b/0x410 [ 40.352997] ? kthread_park+0x180/0x180 [ 40.356962] ret_from_fork+0x24/0x30 [ 40.360650] Modules linked in: [ 40.365229] ---[ end trace cb0e628c314070a0 ]--- [ 40.369999] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x24a/0x7a0 [ 40.376862] 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 [ 40.395790] RSP: 0018:ffff88808d63fa78 EFLAGS: 00010202 [ 40.401150] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff867c041f [ 40.408434] RDX: 0000000000000002 RSI: ffffffff867c042c RDI: 0000000000000010 [ 40.415741] RBP: ffff88808d634340 R08: 0000000000000000 R09: 0000000000000000 [ 40.423025] R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 [ 40.430308] R13: ffff888084dadf80 R14: 00000000000000c8 R15: ffff888084dad050 [ 40.437669] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 40.445909] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.451791] CR2: 00007f169e27b740 CR3: 00000000a0e83000 CR4: 00000000001406e0 [ 40.459084] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.466387] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.473644] Kernel panic - not syncing: Fatal exception [ 40.480162] Kernel Offset: disabled [ 40.485078] Rebooting in 86400 seconds..