[ 36.794252] audit: type=1800 audit(1550526717.952:27): pid=7509 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 36.814376] audit: type=1800 audit(1550526717.952:28): pid=7509 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 37.595576] audit: type=1800 audit(1550526718.812:29): pid=7509 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 37.614198] audit: type=1800 audit(1550526718.812:30): pid=7509 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.43' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 48.977943] WARNING: CPU: 0 PID: 1171 at drivers/tty/tty_ioctl.c:319 tty_set_termios+0x7a9/0x8d0 [ 48.987002] Kernel panic - not syncing: panic_on_warn set ... [ 48.992881] CPU: 0 PID: 1171 Comm: kworker/u5:0 Not tainted 5.0.0-rc7 #77 [ 48.999787] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.009129] Workqueue: hci0 hci_power_on [ 49.013215] Call Trace: [ 49.015793] dump_stack+0x172/0x1f0 [ 49.019408] ? tty_set_termios+0x700/0x8d0 [ 49.023627] panic+0x2cb/0x65c [ 49.026803] ? __warn_printk+0xf3/0xf3 [ 49.030676] ? tty_set_termios+0x7a9/0x8d0 [ 49.034893] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.040415] ? __warn.cold+0x5/0x45 [ 49.044028] ? __warn+0xe8/0x1d0 [ 49.047387] ? tty_set_termios+0x7a9/0x8d0 [ 49.051617] __warn.cold+0x20/0x45 [ 49.055139] ? tty_set_termios+0x7a9/0x8d0 [ 49.059365] report_bug+0x263/0x2b0 [ 49.062979] do_error_trap+0x11b/0x200 [ 49.066851] do_invalid_op+0x37/0x50 [ 49.070547] ? tty_set_termios+0x7a9/0x8d0 [ 49.074771] invalid_op+0x14/0x20 [ 49.078214] RIP: 0010:tty_set_termios+0x7a9/0x8d0 [ 49.083065] Code: 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a3 00 00 00 45 89 a7 d0 03 00 00 e9 47 fe ff ff e8 d7 3f 03 fe <0f> 0b e9 3a f9 ff ff e8 db 3e 3a fe e9 d2 fa ff ff e8 d1 3e 3a fe [ 49.102151] RSP: 0018:ffff8880a7947990 EFLAGS: 00010293 [ 49.107504] RAX: ffff8880a78c8300 RBX: ffff8880a7947a50 RCX: ffffffff836c9add [ 49.114755] RDX: 0000000000000000 RSI: ffffffff836ca1a9 RDI: 0000000000000005 [ 49.122359] RBP: ffff8880a7947a78 R08: ffff8880a78c8300 R09: fffffbfff161bcad [ 49.130097] R10: fffffbfff161bcac R11: 0000000000000003 R12: ffff8880a7947ab8 [ 49.137357] R13: 0000000000010004 R14: 1ffff11014f28f51 R15: ffff8880842fb5c0 [ 49.144641] ? tty_set_termios+0xdd/0x8d0 [ 49.148780] ? tty_set_termios+0x7a9/0x8d0 [ 49.153018] ? tty_wait_until_sent+0x580/0x580 [ 49.157589] ? __mutex_lock+0x3cd/0x1310 [ 49.161634] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.167192] ? tty_termios_encode_baud_rate+0x3ca/0x4e0 [ 49.172561] hci_uart_set_baudrate+0x157/0x1c0 [ 49.177127] ? hci_uart_set_speeds+0x90/0x90 [ 49.181526] ? debug_object_deactivate+0x1e4/0x360 [ 49.186455] hci_uart_setup+0xa2/0x490 [ 49.190323] ? hci_uart_set_baudrate+0x1c0/0x1c0 [ 49.195071] hci_dev_do_open+0x67e/0x14b0 [ 49.199203] ? hci_rx_work+0xaa0/0xaa0 [ 49.203075] ? kasan_check_read+0x11/0x20 [ 49.207223] ? process_one_work+0x890/0x1790 [ 49.211634] ? find_held_lock+0x35/0x130 [ 49.215709] hci_power_on+0x10d/0x580 [ 49.219514] ? hci_error_reset+0xf0/0xf0 [ 49.223568] ? __lock_is_held+0xb6/0x140 [ 49.227610] ? check_preemption_disabled+0x48/0x290 [ 49.232615] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 49.238050] process_one_work+0x98e/0x1790 [ 49.242288] ? pwq_dec_nr_in_flight+0x320/0x320 [ 49.246950] worker_thread+0x98/0xe40 [ 49.250741] kthread+0x357/0x430 [ 49.254094] ? process_one_work+0x1790/0x1790 [ 49.258588] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 49.264119] ret_from_fork+0x3a/0x50 [ 49.269102] Kernel Offset: disabled [ 49.272797] Rebooting in 86400 seconds..