------------[ cut here ]------------
WARNING: CPU: 1 PID: 8006 at drivers/tty/tty_ioctl.c:318 tty_set_termios+0x708/0x810 drivers/tty/tty_ioctl.c:318
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 8006 Comm: kworker/u5:7 Not tainted 4.14.259-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: hci6 hci_power_on
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:tty_set_termios+0x708/0x810 drivers/tty/tty_ioctl.c:318
RSP: 0018:ffff8880aa287b20 EFLAGS: 00010297
RAX: ffff88809245a080 RBX: ffff8880aa287c28 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffff8880aa287c28 RDI: ffff8880b08b3238
RBP: ffff8880b08b3200 R08: 0000000000000000 R09: 00000000000405ad
R10: ffff88809245a958 R11: ffff88809245a080 R12: ffff88808bb4b1c0
R13: ffff8880ab3007c0 R14: 000000000001c200 R15: ffff8880496f4318
 hci_uart_set_baudrate+0x13d/0x270 drivers/bluetooth/hci_ldisc.c:389
 hci_uart_setup+0x8c/0x410 drivers/bluetooth/hci_ldisc.c:412
 hci_dev_do_open+0x34c/0xe30 net/bluetooth/hci_core.c:1392
 hci_power_on+0x97/0x3b0 net/bluetooth/hci_core.c:2101
 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117
 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Kernel Offset: disabled
Rebooting in 86400 seconds..