------------[ cut here ]------------
WARNING: CPU: 0 PID: 1283 at drivers/tty/tty_ioctl.c:319 tty_set_termios.cold+0x11/0x1f drivers/tty/tty_ioctl.c:319
kobject: 'kvm' (000000002b3cb486): kobject_uevent_env
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 1283 Comm: kworker/u5:0 Not tainted 4.19.63 #37
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+0x263/0x507 kernel/panic.c:185
kobject: 'kvm' (000000002b3cb486): fill_kobj_path: path = '/devices/virtual/misc/kvm'
 __warn.cold+0x20/0x4a kernel/panic.c:540
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x204/0x360 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1035
RIP: 0010:tty_set_termios.cold+0x11/0x1f drivers/tty/tty_ioctl.c:319
Code: ff e8 c2 04 3b fe e9 f5 fe ff ff e8 b8 04 3b fe eb c7 e8 b1 04 3b fe eb 9d e8 9a 71 04 fe 48 c7 c7 40 d1 8c 87 e8 c2 e2 ee fd <0f> 0b e9 d1 d7 ff ff 90 90 90 90 90 90 90 55 48 89 e5 41 55 41 54
RSP: 0018:ffff8880a6557990 EFLAGS: 00010282
RAX: 0000000000000024 RBX: ffff8880a6557a50 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8155d556 RDI: ffffed1014caaf24
RBP: ffff8880a6557a78 R08: 0000000000000024 R09: ffffed1015d05079
R10: ffffed1015d05078 R11: ffff8880ae8283c7 R12: ffff8880a6557ab8
R13: 0000000000010004 R14: 1ffff11014caaf51 R15: ffff88805535b380
 hci_uart_set_baudrate+0x157/0x1c0 drivers/bluetooth/hci_ldisc.c:378
 hci_uart_setup+0xa2/0x490 drivers/bluetooth/hci_ldisc.c:401
 hci_dev_do_open+0x674/0x14a0 net/bluetooth/hci_core.c:1423
 hci_power_on+0x10d/0x580 net/bluetooth/hci_core.c:2130
 process_one_work+0x989/0x1750 kernel/workqueue.c:2153
 worker_thread+0x98/0xe40 kernel/workqueue.c:2296
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Kernel Offset: disabled
Rebooting in 86400 seconds..