[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 38.566540] audit: type=1800 audit(1549522303.897:25): pid=7648 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 38.586448] audit: type=1800 audit(1549522303.897:26): pid=7648 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 38.605769] audit: type=1800 audit(1549522303.907:27): pid=7648 uid=0 auid=4294967295 ses=4294967295 subj=_ 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 '10.128.0.85' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 50.502614] Bluetooth: hci0: Frame reassembly failed (-84) [ 52.521439] Bluetooth: hci0: command 0x1003 tx timeout [ 52.527156] Bluetooth: hci0: sending frame failed (-49) [ 54.600856] Bluetooth: hci0: command 0x1001 tx timeout [ 54.606251] Bluetooth: hci0: sending frame failed (-49) [ 56.680881] Bluetooth: hci0: command 0x1009 tx timeout executing program [ 60.769920] Bluetooth: hci0: Frame reassembly failed (-84) [ 60.776041] BUG: unable to handle kernel paging request at ffffffffffffffd6 [ 60.783155] #PF error: [normal kernel read fault] [ 60.787975] PGD 8874067 P4D 8874067 PUD 8876067 PMD 0 [ 60.793317] Oops: 0000 [#1] PREEMPT SMP KASAN [ 60.797806] CPU: 0 PID: 44 Comm: kworker/u4:2 Not tainted 5.0.0-rc5 #60 [ 60.804547] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.813899] Workqueue: events_unbound flush_to_ldisc [ 60.819122] RIP: 0010:h4_recv_buf+0x1ea/0xda0 [ 60.823604] Code: b6 14 10 48 89 c8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 d7 0a 00 00 48 ba 00 00 00 00 00 fc ff df 48 8b 45 d0 4c 8d 60 70 <0f> b7 58 2a 4c 89 e0 48 c1 e8 03 0f b6 04 10 84 c0 74 08 3c 03 0f [ 60.842618] RSP: 0018:ffff8880a9ae7b10 EFLAGS: 00010246 [ 60.848089] RAX: ffffffffffffffac RBX: 0000000000000000 RCX: ffffffffffffffd6 [ 60.855350] RDX: dffffc0000000000 RSI: ffffffff84ecf372 RDI: 0000000000000005 [ 60.862618] RBP: ffff8880a9ae7b98 R08: ffff8880a9af4400 R09: 0000000000000003 [ 60.870020] R10: ffffed1015d05bcf R11: ffff8880ae82de7b R12: 000000000000001c [ 60.877541] R13: ffff8880a9ad57c0 R14: ffff88808d4ba020 R15: 0000000000000006 [ 60.884916] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 60.893132] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.899004] CR2: ffffffffffffffd6 CR3: 0000000087309000 CR4: 00000000001406f0 [ 60.906265] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.913523] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.920785] Call Trace: [ 60.923540] ? __lock_is_held+0xb6/0x140 [ 60.927599] ? check_preemption_disabled+0x48/0x290 [ 60.932606] h4_recv+0xe4/0x200 [ 60.935876] hci_uart_tty_receive+0x22b/0x530 [ 60.940360] ? hci_uart_write_work+0x710/0x710 [ 60.944947] tty_ldisc_receive_buf+0x164/0x1c0 [ 60.949668] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.955197] tty_port_default_receive_buf+0x7d/0xb0 [ 60.960200] flush_to_ldisc+0x228/0x390 [ 60.964170] process_one_work+0x98e/0x1790 [ 60.968397] ? pwq_dec_nr_in_flight+0x320/0x320 [ 60.973051] ? lock_acquire+0x16f/0x3f0 [ 60.977029] worker_thread+0x98/0xe40 [ 60.980857] ? trace_hardirqs_on+0x67/0x230 [ 60.985167] kthread+0x357/0x430 [ 60.988546] ? process_one_work+0x1790/0x1790 [ 60.993029] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 60.998683] ret_from_fork+0x3a/0x50 [ 61.002387] Modules linked in: [ 61.005560] CR2: ffffffffffffffd6 [ 61.008996] ---[ end trace 7052334c669bd77e ]--- [ 61.013743] RIP: 0010:h4_recv_buf+0x1ea/0xda0 [ 61.018219] Code: b6 14 10 48 89 c8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 d7 0a 00 00 48 ba 00 00 00 00 00 fc ff df 48 8b 45 d0 4c 8d 60 70 <0f> b7 58 2a 4c 89 e0 48 c1 e8 03 0f b6 04 10 84 c0 74 08 3c 03 0f [ 61.037231] RSP: 0018:ffff8880a9ae7b10 EFLAGS: 00010246 [ 61.042579] RAX: ffffffffffffffac RBX: 0000000000000000 RCX: ffffffffffffffd6 [ 61.049906] RDX: dffffc0000000000 RSI: ffffffff84ecf372 RDI: 0000000000000005 [ 61.057829] RBP: ffff8880a9ae7b98 R08: ffff8880a9af4400 R09: 0000000000000003 [ 61.065353] R10: ffffed1015d05bcf R11: ffff8880ae82de7b R12: 000000000000001c [ 61.072649] R13: ffff8880a9ad57c0 R14: ffff88808d4ba020 R15: 0000000000000006 [ 61.080222] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 61.088443] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.094474] CR2: ffffffffffffffd6 CR3: 0000000087309000 CR4: 00000000001406f0 [ 61.101890] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.109146] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.116502] Kernel panic - not syncing: Fatal exception [ 61.123015] Kernel Offset: disabled [ 61.126638] Rebooting in 86400 seconds..