WARNING: CPU: 0 PID: 1173 at drivers/tty/tty_ioctl.c:319 tty_set_termios+0x7a9/0x8d0 drivers/tty/tty_ioctl.c:319
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 1173 Comm: kworker/u5:0 Not tainted 5.0.0-rc6-next-20190218 #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+0x2cb/0x65c kernel/panic.c:214
 __warn.cold+0x20/0x45 kernel/panic.c:571
 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+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:tty_set_termios+0x7a9/0x8d0 drivers/tty/tty_ioctl.c:319
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 87 e8 fe fd <0f> 0b e9 3a f9 ff ff e8 0b b6 36 fe e9 d2 fa ff ff e8 01 b6 36 fe
RSP: 0018:ffff8880a7ff7990 EFLAGS: 00010293
RAX: ffff8880a7fe8380 RBX: ffff8880a7ff7a50 RCX: ffffffff837172bd
RDX: 0000000000000000 RSI: ffffffff83717989 RDI: 0000000000000005
RBP: ffff8880a7ff7a78 R08: ffff8880a7fe8380 R09: fffffbfff161e52d
R10: fffffbfff161e52c R11: 0000000000000003 R12: ffff8880a7ff7ab8
R13: 0000000000010004 R14: 1ffff11014ffef51 R15: ffff8880909ac440
 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+0x67e/0x14b0 net/bluetooth/hci_core.c:1423
 hci_power_on+0x10d/0x580 net/bluetooth/hci_core.c:2130
 process_one_work+0x98e/0x1790 kernel/workqueue.c:2267
 worker_thread+0x98/0xe40 kernel/workqueue.c:2413
 kthread+0x357/0x430 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..