[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Update UTMP about System Runlevel Changes.
[  OK  ] Started Load/Save RF Kill Switch Status.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.1.101' (ECDSA) to the list of known hosts.
syzkaller login: [   28.187512] IPVS: ftp: loaded support on port[0] = 21
executing program
[   28.305864] ------------[ cut here ]------------
[   28.310756] WARNING: CPU: 0 PID: 7979 at drivers/tty/tty_ioctl.c:318 tty_set_termios+0x708/0x810
[   28.320801] Kernel panic - not syncing: panic_on_warn set ...
[   28.320801] 
[   28.328158] CPU: 0 PID: 7979 Comm: kworker/u5:1 Not tainted 4.14.291-syzkaller #0
[   28.335857] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
[   28.345203] Workqueue: hci1 hci_power_on
[   28.349244] Call Trace:
[   28.351814]  dump_stack+0x1b2/0x281
[   28.355420]  panic+0x1f9/0x42d
[   28.358587]  ? add_taint.cold+0x16/0x16
[   28.362542]  ? tty_set_termios+0x708/0x810
[   28.366760]  ? tty_set_termios+0x708/0x810
[   28.370973]  __warn.cold+0x20/0x44
[   28.374499]  ? ist_end_non_atomic+0x10/0x10
[   28.378815]  ? tty_set_termios+0x708/0x810
[   28.383028]  report_bug+0x208/0x250
[   28.386635]  do_error_trap+0x195/0x2d0
[   28.390503]  ? math_error+0x2d0/0x2d0
[   28.394284]  ? deref_stack_reg+0x1a0/0x1a0
[   28.398494]  ? unwind_next_frame+0x404/0x17d0
[   28.402969]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   28.407819]  invalid_op+0x1b/0x40
[   28.411251] RIP: 0010:tty_set_termios+0x708/0x810
[   28.416067] RSP: 0018:ffff8880958dfb20 EFLAGS: 00010297
[   28.421406] RAX: ffff88809c9e4680 RBX: ffff8880958dfc28 RCX: dffffc0000000000
[   28.428669] RDX: 0000000000000000 RSI: ffff8880958dfc28 RDI: ffff8880b0afc338
[   28.435928] RBP: ffff8880b0afc300 R08: 0000000000000000 R09: 0000000000040581
[   28.443182] R10: ffff88809c9e4f58 R11: ffff88809c9e4680 R12: ffff8880b39516c0
[   28.450432] R13: ffff8880a31b1d40 R14: 000000000001c200 R15: ffff8880b2c99cd8
[   28.457698]  ? tty_wait_until_sent+0x470/0x470
[   28.462274]  ? hci_dev_do_open+0x3d/0xe30
[   28.466422]  ? __mutex_lock+0x360/0x1310
[   28.470470]  ? tty_termios_encode_baud_rate+0x2f9/0x410
[   28.475821]  hci_uart_set_baudrate+0x13d/0x270
[   28.480387]  ? hci_uart_set_speeds+0x90/0x90
[   28.484776]  ? lock_downgrade+0x740/0x740
[   28.488906]  ? hci_sock_dev_event+0x7e/0x510
[   28.493296]  hci_uart_setup+0x8c/0x410
[   28.497196]  ? hci_uart_set_baudrate+0x270/0x270
[   28.501957]  hci_dev_do_open+0x34c/0xe30
[   28.506004]  ? lock_acquire+0x170/0x3f0
[   28.509961]  hci_power_on+0x97/0x3b0
[   28.513682]  process_one_work+0x793/0x14a0
[   28.517899]  ? work_busy+0x320/0x320
[   28.521590]  ? worker_thread+0x158/0xff0
[   28.525631]  ? _raw_spin_unlock_irq+0x24/0x80
[   28.530105]  worker_thread+0x5cc/0xff0
[   28.533976]  ? rescuer_thread+0xc80/0xc80
[   28.538101]  kthread+0x30d/0x420
[   28.541446]  ? kthread_create_on_node+0xd0/0xd0
[   28.546092]  ret_from_fork+0x24/0x30
[   28.550019] Kernel Offset: disabled
[   28.553682] Rebooting in 86400 seconds..