[ 36.984027] audit: type=1800 audit(1550526629.861:28): pid=7574 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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. [ 37.523728] audit: type=1800 audit(1550526630.491:29): pid=7574 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 37.543139] audit: type=1800 audit(1550526630.491:30): pid=7574 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 [....] startpar: service(s) returned failure: rsyslog ssh ...[?25l[?1c7[FAIL8[?25h[?0c failed! Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.204' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 48.161139] WARNING: CPU: 1 PID: 1171 at drivers/tty/tty_ioctl.c:319 tty_set_termios+0x7a9/0x8d0 [ 48.170240] Kernel panic - not syncing: panic_on_warn set ... [ 48.176117] CPU: 1 PID: 1171 Comm: kworker/u5:0 Not tainted 5.0.0-rc7 #78 [ 48.183025] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.192373] Workqueue: hci0 hci_power_on [ 48.196421] Call Trace: [ 48.198999] dump_stack+0x172/0x1f0 [ 48.202797] ? tty_set_termios+0x700/0x8d0 [ 48.207025] panic+0x2cb/0x65c [ 48.210200] ? __warn_printk+0xf3/0xf3 [ 48.214080] ? tty_set_termios+0x7a9/0x8d0 [ 48.218367] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.223893] ? __warn.cold+0x5/0x45 [ 48.227504] ? __warn+0xe8/0x1d0 [ 48.230863] ? tty_set_termios+0x7a9/0x8d0 [ 48.235086] __warn.cold+0x20/0x45 [ 48.238610] ? tty_set_termios+0x7a9/0x8d0 [ 48.242828] report_bug+0x263/0x2b0 [ 48.246441] do_error_trap+0x11b/0x200 [ 48.250321] do_invalid_op+0x37/0x50 [ 48.254020] ? tty_set_termios+0x7a9/0x8d0 [ 48.258240] invalid_op+0x14/0x20 [ 48.261674] RIP: 0010:tty_set_termios+0x7a9/0x8d0 [ 48.266513] 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 [ 48.287202] RSP: 0018:ffff8880a79a7990 EFLAGS: 00010293 [ 48.292556] RAX: ffff8880a798c300 RBX: ffff8880a79a7a50 RCX: ffffffff836c9add [ 48.299815] RDX: 0000000000000000 RSI: ffffffff836ca1a9 RDI: 0000000000000005 [ 48.307171] RBP: ffff8880a79a7a78 R08: ffff8880a798c300 R09: fffffbfff161bcad [ 48.314432] R10: fffffbfff161bcac R11: 0000000000000003 R12: ffff8880a79a7ab8 [ 48.321691] R13: 0000000000010004 R14: 1ffff11014f34f51 R15: ffff88808f4de980 [ 48.328961] ? tty_set_termios+0xdd/0x8d0 [ 48.333098] ? tty_set_termios+0x7a9/0x8d0 [ 48.337324] ? tty_wait_until_sent+0x580/0x580 [ 48.341900] ? __mutex_lock+0x3cd/0x1310 [ 48.345954] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.351477] ? tty_termios_encode_baud_rate+0x3ca/0x4e0 [ 48.356835] hci_uart_set_baudrate+0x157/0x1c0 [ 48.361402] ? hci_uart_set_speeds+0x90/0x90 [ 48.365803] ? debug_object_deactivate+0x1e4/0x360 [ 48.370721] hci_uart_setup+0xa2/0x490 [ 48.374598] ? hci_uart_set_baudrate+0x1c0/0x1c0 [ 48.379342] hci_dev_do_open+0x67e/0x14b0 [ 48.383472] ? hci_rx_work+0xaa0/0xaa0 [ 48.387342] ? kasan_check_read+0x11/0x20 [ 48.391480] ? process_one_work+0x890/0x1790 [ 48.395873] ? find_held_lock+0x35/0x130 [ 48.399926] hci_power_on+0x10d/0x580 [ 48.403711] ? hci_error_reset+0xf0/0xf0 [ 48.407800] ? __lock_is_held+0xb6/0x140 [ 48.411846] ? check_preemption_disabled+0x48/0x290 [ 48.416849] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 48.422291] process_one_work+0x98e/0x1790 [ 48.426543] ? pwq_dec_nr_in_flight+0x320/0x320 [ 48.431231] worker_thread+0x98/0xe40 [ 48.435028] kthread+0x357/0x430 [ 48.438387] ? process_one_work+0x1790/0x1790 [ 48.442872] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 48.448403] ret_from_fork+0x3a/0x50 [ 48.453569] Kernel Offset: disabled [ 48.457253] Rebooting in 86400 seconds..