------------[ cut here ]------------
WARNING: CPU: 0 PID: 1517 at drivers/tty/tty_ioctl.c:319 tty_set_termios.cold+0x11/0x23 drivers/tty/tty_ioctl.c:319
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 1517 Comm: kworker/u5:0 Not tainted 5.3.0-rc2+ #108
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: hci0 hci_power_on
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2dc/0x755 kernel/panic.c:219
 __warn.cold+0x20/0x4c kernel/panic.c:576
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1026
RIP: 0010:tty_set_termios.cold+0x11/0x23 drivers/tty/tty_ioctl.c:319
Code: ef e8 86 0b 2c fe e9 e8 fe ff ff e8 7c 0b 2c fe eb ae e8 75 0b 2c fe eb 84 e8 3e f4 f1 fd 48 c7 c7 60 d4 d0 87 e8 86 94 db fd <0f> 0b e9 d5 d5 ff ff 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5
RSP: 0018:ffff8880a672f978 EFLAGS: 00010282
RAX: 0000000000000024 RBX: ffff8880a672fa38 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815c51f6 RDI: ffffed1014ce5f21
RBP: ffff8880a672fa60 R08: 0000000000000024 R09: ffffed1015d060d1
R10: ffffed1015d060d0 R11: ffff8880ae830687 R12: ffff8880a672faa0
R13: 0000000000010004 R14: 1ffff11014ce5f4e R15: ffff8880642112c0
 hci_uart_set_baudrate+0x157/0x1c0 drivers/bluetooth/hci_ldisc.c:371
 hci_uart_setup+0xa2/0x4a0 drivers/bluetooth/hci_ldisc.c:394
 hci_dev_do_open+0x3e3/0x1940 net/bluetooth/hci_core.c:1450
 hci_power_on+0x12d/0x680 net/bluetooth/hci_core.c:2171
 process_one_work+0x9af/0x1740 kernel/workqueue.c:2269
 worker_thread+0x98/0xe40 kernel/workqueue.c:2415
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..