[ 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 '10.128.0.78' (ECDSA) to the list of known hosts. syzkaller login: [ 44.625166] audit: type=1400 audit(1596406259.346:8): avc: denied { execmem } for pid=6454 comm="syz-executor923" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 44.641263] IPVS: ftp: loaded support on port[0] = 21 executing program [ 45.789132] kasan: CONFIG_KASAN_INLINE enabled [ 45.793891] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 45.816558] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 45.823362] CPU: 0 PID: 6484 Comm: kworker/u5:2 Not tainted 4.19.136-syzkaller #0 [ 45.830982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.840371] Workqueue: hci0 hci_rx_work [ 45.844449] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x24a/0x7a0 [ 45.850774] 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 [ 45.869993] RSP: 0018:ffff8880849c7a78 EFLAGS: 00010202 [ 45.875362] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff867c041f [ 45.882687] RDX: 0000000000000002 RSI: ffffffff867c042c RDI: 0000000000000010 [ 45.889964] RBP: ffff8880a83a0980 R08: 0000000000000000 R09: 0000000000000000 [ 45.897255] R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 [ 45.904523] R13: ffff8880a56b5b00 R14: 00000000000000c8 R15: ffff8880a56b4bd0 [ 45.911786] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 45.920023] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.925910] CR2: 0000558031243990 CR3: 0000000099fe5000 CR4: 00000000001406f0 [ 45.933267] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.940533] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.948023] Call Trace: [ 45.950666] hci_event_packet+0x1973/0x858f [ 45.954997] ? mark_held_locks+0xf0/0xf0 [ 45.960105] ? hci_cmd_complete_evt+0xb5e0/0xb5e0 [ 45.964960] ? update_curr+0x3b9/0x870 [ 45.968846] ? debug_object_deactivate+0x1f9/0x2e0 [ 45.973763] ? mark_held_locks+0xa6/0xf0 [ 45.977811] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 45.982969] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 45.987572] hci_rx_work+0x46b/0xa90 [ 45.991286] process_one_work+0x864/0x1570 [ 45.995514] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 46.000180] worker_thread+0x64c/0x1130 [ 46.004482] ? __kthread_parkme+0xfd/0x1b0 [ 46.008767] ? process_one_work+0x1570/0x1570 [ 46.013281] kthread+0x30b/0x410 [ 46.016629] ? kthread_park+0x180/0x180 [ 46.020595] ret_from_fork+0x24/0x30 [ 46.024313] Modules linked in: [ 46.028267] ---[ end trace 2a589a65f93dc869 ]--- [ 46.033053] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x24a/0x7a0 [ 46.039462] 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 [ 46.058709] RSP: 0018:ffff8880849c7a78 EFLAGS: 00010202 [ 46.064078] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff867c041f [ 46.071496] RDX: 0000000000000002 RSI: ffffffff867c042c RDI: 0000000000000010 [ 46.079471] RBP: ffff8880a83a0980 R08: 0000000000000000 R09: 0000000000000000 [ 46.086884] R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 [ 46.094163] R13: ffff8880a56b5b00 R14: 00000000000000c8 R15: ffff8880a56b4bd0 [ 46.101614] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 46.109936] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.115822] CR2: 0000558031243990 CR3: 0000000099fe5000 CR4: 00000000001406f0 [ 46.123394] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.131095] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.138442] Kernel panic - not syncing: Fatal exception [ 46.145144] Kernel Offset: disabled [ 46.148771] Rebooting in 86400 seconds..