[ 36.319129][ T26] audit: type=1800 audit(1555473770.706:27): pid=7513 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 36.351856][ T26] audit: type=1800 audit(1555473770.736:28): pid=7513 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. [ 37.040832][ T26] audit: type=1800 audit(1555473771.426:29): pid=7513 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 37.061113][ T26] audit: type=1800 audit(1555473771.426:30): pid=7513 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 '10.128.1.39' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 66.942889][ T1174] WARNING: CPU: 0 PID: 1174 at drivers/tty/tty_ioctl.c:319 tty_set_termios+0x7a9/0x8d0 [ 66.952772][ T1174] Kernel panic - not syncing: panic_on_warn set ... [ 66.959446][ T1174] CPU: 0 PID: 1174 Comm: kworker/u5:0 Not tainted 5.1.0-rc5+ #71 [ 66.967845][ T1174] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.978134][ T1174] Workqueue: hci0 hci_power_on [ 66.982904][ T1174] Call Trace: [ 66.986273][ T1174] dump_stack+0x172/0x1f0 [ 66.990614][ T1174] ? tty_set_termios+0x700/0x8d0 [ 66.995577][ T1174] panic+0x2cb/0x65c [ 66.999609][ T1174] ? __warn_printk+0xf3/0xf3 [ 67.004208][ T1174] ? tty_set_termios+0x7a9/0x8d0 [ 67.009321][ T1174] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.015745][ T1174] ? __warn.cold+0x5/0x45 [ 67.020187][ T1174] ? __warn+0xe8/0x1d0 [ 67.024273][ T1174] ? tty_set_termios+0x7a9/0x8d0 [ 67.029223][ T1174] __warn.cold+0x20/0x45 [ 67.033476][ T1174] ? tty_set_termios+0x7a9/0x8d0 [ 67.038546][ T1174] report_bug+0x263/0x2b0 [ 67.042867][ T1174] do_error_trap+0x11b/0x200 [ 67.047472][ T1174] do_invalid_op+0x37/0x50 [ 67.052059][ T1174] ? tty_set_termios+0x7a9/0x8d0 [ 67.056991][ T1174] invalid_op+0x14/0x20 [ 67.061133][ T1174] RIP: 0010:tty_set_termios+0x7a9/0x8d0 [ 67.066733][ T1174] 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 07 7c fd fd <0f> 0b e9 3a f9 ff ff e8 8b 8b 35 fe e9 d2 fa ff ff e8 81 8b 35 fe [ 67.086612][ T1174] RSP: 0018:ffff8880a789f968 EFLAGS: 00010293 [ 67.092738][ T1174] RAX: ffff8880a78943c0 RBX: ffff8880a789fa28 RCX: ffffffff837309dd [ 67.100718][ T1174] RDX: 0000000000000000 RSI: ffffffff837310a9 RDI: 0000000000000005 [ 67.108686][ T1174] RBP: ffff8880a789fa50 R08: ffff8880a78943c0 R09: fffffbfff162a18d [ 67.116658][ T1174] R10: fffffbfff162a18c R11: 0000000000000003 R12: ffff8880a789fa90 [ 67.124726][ T1174] R13: 0000000000010004 R14: 1ffff11014f13f4c R15: ffff8880903ecdc0 [ 67.132705][ T1174] ? tty_set_termios+0xdd/0x8d0 [ 67.137883][ T1174] ? tty_set_termios+0x7a9/0x8d0 [ 67.142905][ T1174] ? tty_set_termios+0x7a9/0x8d0 [ 67.147848][ T1174] ? hci_dev_do_open+0xa3/0x1780 [ 67.152789][ T1174] ? tty_wait_until_sent+0x580/0x580 [ 67.158085][ T1174] ? __mutex_lock+0x3cd/0x1310 [ 67.162858][ T1174] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.169213][ T1174] ? tty_termios_encode_baud_rate+0x3ca/0x4e0 [ 67.175413][ T1174] hci_uart_set_baudrate+0x157/0x1c0 [ 67.180682][ T1174] ? hci_uart_set_speeds+0x90/0x90 [ 67.185804][ T1174] ? ret_from_fork+0x3a/0x50 [ 67.190538][ T1174] ? kasan_check_write+0x14/0x20 [ 67.195656][ T1174] ? graph_lock+0x7b/0x200 [ 67.200194][ T1174] hci_uart_setup+0xa2/0x490 [ 67.205072][ T1174] ? hci_uart_set_baudrate+0x1c0/0x1c0 [ 67.210535][ T1174] hci_dev_do_open+0x78c/0x1780 [ 67.215570][ T1174] ? hci_rx_work+0xaa0/0xaa0 [ 67.220267][ T1174] ? mark_held_locks+0xf0/0xf0 [ 67.225101][ T1174] hci_power_on+0x10d/0x580 [ 67.229749][ T1174] ? hci_error_reset+0xf0/0xf0 [ 67.234583][ T1174] process_one_work+0x98e/0x1790 [ 67.239638][ T1174] ? pwq_dec_nr_in_flight+0x320/0x320 [ 67.245235][ T1174] worker_thread+0x98/0xe40 [ 67.249765][ T1174] kthread+0x357/0x430 [ 67.253931][ T1174] ? process_one_work+0x1790/0x1790 [ 67.259246][ T1174] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 67.265748][ T1174] ret_from_fork+0x3a/0x50 [ 67.271717][ T1174] Kernel Offset: disabled [ 67.276454][ T1174] Rebooting in 86400 seconds..