[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 37.578929] audit: type=1800 audit(1549877846.391:25): pid=7587 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 37.614784] audit: type=1800 audit(1549877846.391:26): pid=7587 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 37.641132] audit: type=1800 audit(1549877846.401:27): pid=7587 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.0' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 47.986794] kasan: CONFIG_KASAN_INLINE enabled [ 47.991430] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 47.999421] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 48.005655] CPU: 0 PID: 1171 Comm: kworker/u5:0 Not tainted 5.0.0-rc6 #67 [ 48.012554] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.021895] Workqueue: hci0 hci_power_on [ 48.025942] RIP: 0010:qca_setup+0x134/0x1550 [ 48.030326] Code: c1 ea 03 80 3c 02 00 0f 85 08 12 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 49 8d bc 24 f8 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d7 11 00 00 4d 8b ac 24 f8 00 00 00 49 8d 85 f0 [ 48.049205] RSP: 0018:ffff8880a792fa00 EFLAGS: 00010202 [ 48.054546] RAX: dffffc0000000000 RBX: ffff888091104040 RCX: ffffffff84ecfa52 [ 48.061800] RDX: 000000000000001f RSI: ffffffff84ee0c01 RDI: 00000000000000f8 [ 48.069047] RBP: ffff8880a792fb50 R08: ffff8880a7914300 R09: 0000000000000004 [ 48.076295] R10: ffffed1012500d55 R11: ffff888092806aaf R12: 0000000000000000 [ 48.083558] R13: ffff88808dcdd580 R14: ffff8880a792fb28 R15: 0000000000000000 [ 48.090808] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 48.099012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.104873] CR2: 00007fcd2046c000 CR3: 00000000980ae000 CR4: 00000000001406f0 [ 48.112123] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 48.119371] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 48.126614] Call Trace: [ 48.129184] ? tty_termios_encode_baud_rate+0x3ca/0x4e0 [ 48.134531] ? qca_send_power_pulse+0x200/0x200 [ 48.139176] ? hci_uart_set_baudrate+0x157/0x1c0 [ 48.143913] ? debug_object_deactivate+0x1e4/0x360 [ 48.148822] ? qca_send_power_pulse+0x200/0x200 [ 48.153466] hci_uart_setup+0x1c4/0x490 [ 48.157419] ? hci_uart_set_baudrate+0x1c0/0x1c0 [ 48.162153] hci_dev_do_open+0x67e/0x14b0 [ 48.166278] ? hci_rx_work+0xaa0/0xaa0 [ 48.170142] ? kasan_check_read+0x11/0x20 [ 48.174268] ? process_one_work+0x890/0x1790 [ 48.178656] ? find_held_lock+0x35/0x130 [ 48.182694] hci_power_on+0x10d/0x580 [ 48.186475] ? hci_error_reset+0xf0/0xf0 [ 48.190516] ? __lock_is_held+0xb6/0x140 [ 48.194554] ? check_preemption_disabled+0x48/0x290 [ 48.199557] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 48.205013] process_one_work+0x98e/0x1790 [ 48.209227] ? pwq_dec_nr_in_flight+0x320/0x320 [ 48.213892] worker_thread+0x98/0xe40 [ 48.217676] kthread+0x357/0x430 [ 48.221019] ? process_one_work+0x1790/0x1790 [ 48.225489] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 48.231005] ret_from_fork+0x3a/0x50 [ 48.234699] Modules linked in: [ 48.238068] ---[ end trace 1167adce2e28dfca ]--- [ 48.242829] RIP: 0010:qca_setup+0x134/0x1550 [ 48.247253] Code: c1 ea 03 80 3c 02 00 0f 85 08 12 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 49 8d bc 24 f8 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d7 11 00 00 4d 8b ac 24 f8 00 00 00 49 8d 85 f0 [ 48.266187] RSP: 0018:ffff8880a792fa00 EFLAGS: 00010202 [ 48.271533] RAX: dffffc0000000000 RBX: ffff888091104040 RCX: ffffffff84ecfa52 [ 48.278829] RDX: 000000000000001f RSI: ffffffff84ee0c01 RDI: 00000000000000f8 [ 48.286127] RBP: ffff8880a792fb50 R08: ffff8880a7914300 R09: 0000000000000004 [ 48.293390] R10: ffffed1012500d55 R11: ffff888092806aaf R12: 0000000000000000 [ 48.300730] R13: ffff88808dcdd580 R14: ffff8880a792fb28 R15: 0000000000000000 [ 48.308018] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 48.316257] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.322133] CR2: 00007fcd2046c000 CR3: 00000000980ae000 CR4: 00000000001406f0 [ 48.329433] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 48.336716] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 48.344015] Kernel panic - not syncing: Fatal exception [ 48.350296] Kernel Offset: disabled [ 48.353916] Rebooting in 86400 seconds..