[ 36.980665][ T26] audit: type=1800 audit(1555469001.909:27): pid=7554 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 37.002522][ T26] audit: type=1800 audit(1555469001.909:28): pid=7554 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. [ 37.668955][ T26] audit: type=1800 audit(1555469002.669:29): pid=7554 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 [ 37.689693][ T26] audit: type=1800 audit(1555469002.679:30): pid=7554 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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 '10.128.1.43' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 72.505675][ T1174] WARNING: CPU: 0 PID: 1174 at drivers/tty/tty_ioctl.c:319 tty_set_termios+0x7a9/0x8d0 [ 72.515410][ T1174] Kernel panic - not syncing: panic_on_warn set ... [ 72.521981][ T1174] CPU: 0 PID: 1174 Comm: kworker/u5:0 Not tainted 5.1.0-rc5+ #73 [ 72.529767][ T1174] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.539814][ T1174] Workqueue: hci0 hci_power_on [ 72.544557][ T1174] Call Trace: [ 72.547827][ T1174] dump_stack+0x172/0x1f0 [ 72.552147][ T1174] ? tty_set_termios+0x700/0x8d0 [ 72.557088][ T1174] panic+0x2cb/0x65c [ 72.561060][ T1174] ? __warn_printk+0xf3/0xf3 [ 72.565753][ T1174] ? tty_set_termios+0x7a9/0x8d0 [ 72.570675][ T1174] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.576988][ T1174] ? __warn.cold+0x5/0x45 [ 72.581337][ T1174] ? __warn+0xe8/0x1d0 [ 72.585518][ T1174] ? tty_set_termios+0x7a9/0x8d0 [ 72.590442][ T1174] __warn.cold+0x20/0x45 [ 72.594671][ T1174] ? tty_set_termios+0x7a9/0x8d0 [ 72.599643][ T1174] report_bug+0x263/0x2b0 [ 72.604077][ T1174] do_error_trap+0x11b/0x200 [ 72.608663][ T1174] do_invalid_op+0x37/0x50 [ 72.613206][ T1174] ? tty_set_termios+0x7a9/0x8d0 [ 72.618135][ T1174] invalid_op+0x14/0x20 [ 72.622274][ T1174] RIP: 0010:tty_set_termios+0x7a9/0x8d0 [ 72.627802][ 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 [ 72.647455][ T1174] RSP: 0018:ffff8880a7f77968 EFLAGS: 00010293 [ 72.653516][ T1174] RAX: ffff8880a7f6e3c0 RBX: ffff8880a7f77a28 RCX: ffffffff837309dd [ 72.661467][ T1174] RDX: 0000000000000000 RSI: ffffffff837310a9 RDI: 0000000000000005 [ 72.669421][ T1174] RBP: ffff8880a7f77a50 R08: ffff8880a7f6e3c0 R09: fffffbfff162a18d [ 72.677373][ T1174] R10: fffffbfff162a18c R11: 0000000000000003 R12: ffff8880a7f77a90 [ 72.685381][ T1174] R13: 0000000000010004 R14: 1ffff11014feef4c R15: ffff88808705d580 [ 72.693357][ T1174] ? tty_set_termios+0xdd/0x8d0 [ 72.698202][ T1174] ? tty_set_termios+0x7a9/0x8d0 [ 72.703193][ T1174] ? tty_set_termios+0x7a9/0x8d0 [ 72.708224][ T1174] ? hci_dev_do_open+0xa3/0x1780 [ 72.713145][ T1174] ? tty_wait_until_sent+0x580/0x580 [ 72.718412][ T1174] ? __mutex_lock+0x3cd/0x1310 [ 72.723159][ T1174] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.729387][ T1174] ? tty_termios_encode_baud_rate+0x3ca/0x4e0 [ 72.735646][ T1174] hci_uart_set_baudrate+0x157/0x1c0 [ 72.740922][ T1174] ? hci_uart_set_speeds+0x90/0x90 [ 72.746289][ T1174] ? ret_from_fork+0x3a/0x50 [ 72.750870][ T1174] ? kasan_check_write+0x14/0x20 [ 72.755878][ T1174] ? graph_lock+0x7b/0x200 [ 72.760401][ T1174] hci_uart_setup+0xa2/0x490 [ 72.764977][ T1174] ? hci_uart_set_baudrate+0x1c0/0x1c0 [ 72.770413][ T1174] hci_dev_do_open+0x78c/0x1780 [ 72.775304][ T1174] ? hci_rx_work+0xaa0/0xaa0 [ 72.779887][ T1174] ? mark_held_locks+0xf0/0xf0 [ 72.784639][ T1174] hci_power_on+0x10d/0x580 [ 72.789128][ T1174] ? hci_error_reset+0xf0/0xf0 [ 72.793888][ T1174] process_one_work+0x98e/0x1790 [ 72.798812][ T1174] ? pwq_dec_nr_in_flight+0x320/0x320 [ 72.804263][ T1174] worker_thread+0x98/0xe40 [ 72.808752][ T1174] kthread+0x357/0x430 [ 72.812954][ T1174] ? process_one_work+0x1790/0x1790 [ 72.818156][ T1174] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 72.824437][ T1174] ret_from_fork+0x3a/0x50 [ 72.829904][ T1174] Kernel Offset: disabled [ 72.834295][ T1174] Rebooting in 86400 seconds..