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 #11 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:ffff8880a6067968 EFLAGS: 00010293 RAX: ffff8880a6bfc640 RBX: ffff8880a6067a28 RCX: ffffffff8376fafd RDX: 0000000000000000 RSI: ffffffff837701c5 RDI: 0000000000000005 RBP: ffff8880a6067a50 R08: ffff8880a6bfc640 R09: fffffbfff163c5f5 R10: fffffbfff163c5f4 R11: 0000000000000003 R12: ffff8880a6067a90 R13: 0000000000010004 R14: 1ffff11014c0cf4c R15: ffff8880851fb3c0 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..