WARNING: CPU: 0 PID: 1503 at drivers/tty/tty_ioctl.c:319 tty_set_termios+0x7a5/0x8d0 drivers/tty/tty_ioctl.c:319
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 1503 Comm: kworker/u5:0 Not tainted 5.2.0-rc3 #18
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/0x744 kernel/panic.c:219
 __warn.cold+0x20/0x4d 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+0x14/0x20 arch/x86/entry/entry_64.S:986
RIP: 0010:tty_set_termios+0x7a5/0x8d0 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 49 fe ff ff e8 eb a4 f9 fd <0f> 0b e9 3e f9 ff ff e8 ef 42 32 fe e9 d6 fa ff ff e8 e5 42 32 fe
RSP: 0018:ffff8880a669f968 EFLAGS: 00010293
RAX: ffff8880a6692640 RBX: ffff8880a669fa28 RCX: ffffffff8376fafd
RDX: 0000000000000000 RSI: ffffffff837701c5 RDI: 0000000000000005
RBP: ffff8880a669fa50 R08: ffff8880a6692640 R09: fffffbfff163c5f5
R10: fffffbfff163c5f4 R11: 0000000000000003 R12: ffff8880a669fa90
R13: 0000000000010004 R14: 1ffff11014cd3f4c R15: ffff8880a3938180
 hci_uart_set_baudrate+0x157/0x1c0 drivers/bluetooth/hci_ldisc.c:363
 hci_uart_setup+0xa2/0x490 drivers/bluetooth/hci_ldisc.c:386
 hci_dev_do_open+0x784/0x1760 net/bluetooth/hci_core.c:1450
 hci_power_on+0x10d/0x580 net/bluetooth/hci_core.c:2171
 process_one_work+0x989/0x1790 kernel/workqueue.c:2269
 worker_thread+0x98/0xe40 kernel/workqueue.c:2415
 kthread+0x354/0x420 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..