[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 40.457839] audit: type=1800 audit(1549889046.132:25): pid=7742 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 40.493056] audit: type=1800 audit(1549889046.132:26): pid=7742 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 40.518478] audit: type=1800 audit(1549889046.142:27): pid=7742 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 '10.128.0.154' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 52.406922] kasan: CONFIG_KASAN_INLINE enabled [ 52.411610] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 52.419096] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 52.425329] CPU: 0 PID: 1171 Comm: kworker/u5:0 Not tainted 5.0.0-rc6 #67 [ 52.432263] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.441607] Workqueue: hci0 hci_power_on [ 52.445671] RIP: 0010:qca_setup+0x134/0x1550 [ 52.450072] 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 [ 52.468962] RSP: 0018:ffff8880a788fa00 EFLAGS: 00010202 [ 52.474307] RAX: dffffc0000000000 RBX: ffff8880a7902cc0 RCX: ffffffff84ecfa52 [ 52.481560] RDX: 000000000000001f RSI: ffffffff84ee0c01 RDI: 00000000000000f8 [ 52.488829] RBP: ffff8880a788fb50 R08: ffff8880a7880300 R09: 0000000000000004 [ 52.496098] R10: ffffed10140f3c7d R11: ffff8880a079e3ef R12: 0000000000000000 [ 52.503352] R13: ffff88809fdf1700 R14: ffff8880a788fb28 R15: 0000000000000000 [ 52.510606] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 52.518827] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.524690] CR2: 00007fe3ee47a000 CR3: 000000009806e000 CR4: 00000000001406f0 [ 52.531943] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.539198] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.546448] Call Trace: [ 52.549024] ? tty_termios_encode_baud_rate+0x3ca/0x4e0 [ 52.554374] ? qca_send_power_pulse+0x200/0x200 [ 52.559039] ? hci_uart_set_baudrate+0x157/0x1c0 [ 52.563794] ? debug_object_deactivate+0x1e4/0x360 [ 52.568735] ? qca_send_power_pulse+0x200/0x200 [ 52.573385] hci_uart_setup+0x1c4/0x490 [ 52.577353] ? hci_uart_set_baudrate+0x1c0/0x1c0 [ 52.582121] hci_dev_do_open+0x67e/0x14b0 [ 52.586249] ? hci_rx_work+0xaa0/0xaa0 [ 52.590343] ? kasan_check_read+0x11/0x20 [ 52.594491] ? process_one_work+0x890/0x1790 [ 52.598881] ? find_held_lock+0x35/0x130 [ 52.602927] hci_power_on+0x10d/0x580 [ 52.606721] ? hci_error_reset+0xf0/0xf0 [ 52.610757] ? __lock_is_held+0xb6/0x140 [ 52.614821] ? check_preemption_disabled+0x48/0x290 [ 52.619829] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 52.625271] process_one_work+0x98e/0x1790 [ 52.629486] ? pwq_dec_nr_in_flight+0x320/0x320 [ 52.634139] worker_thread+0x98/0xe40 [ 52.637938] kthread+0x357/0x430 [ 52.641301] ? process_one_work+0x1790/0x1790 [ 52.645778] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 52.651328] ret_from_fork+0x3a/0x50 [ 52.655022] Modules linked in: [ 52.658857] ---[ end trace 6b9bb8400c49617b ]--- [ 52.663683] RIP: 0010:qca_setup+0x134/0x1550 [ 52.668092] 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 [ 52.687006] RSP: 0018:ffff8880a788fa00 EFLAGS: 00010202 [ 52.692365] RAX: dffffc0000000000 RBX: ffff8880a7902cc0 RCX: ffffffff84ecfa52 [ 52.699645] RDX: 000000000000001f RSI: ffffffff84ee0c01 RDI: 00000000000000f8 [ 52.706927] RBP: ffff8880a788fb50 R08: ffff8880a7880300 R09: 0000000000000004 [ 52.714208] R10: ffffed10140f3c7d R11: ffff8880a079e3ef R12: 0000000000000000 [ 52.721475] R13: ffff88809fdf1700 R14: ffff8880a788fb28 R15: 0000000000000000 [ 52.728759] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 52.737042] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.742950] CR2: 00007fe3ee47a000 CR3: 000000009806e000 CR4: 00000000001406f0 [ 52.750217] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.757510] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.764837] Kernel panic - not syncing: Fatal exception [ 52.771181] Kernel Offset: disabled [ 52.774813] Rebooting in 86400 seconds..