WARNING: CPU: 0 PID: 1171 at drivers/tty/tty_ioctl.c:319 tty_set_termios+0x93a/0xac0 drivers/tty/tty_ioctl.c:319 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 1171 Comm: kworker/u5:0 Not tainted 5.0.0-rc1+ #22 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+0x1db/0x2d0 lib/dump_stack.c:113 panic+0x2cb/0x65c kernel/panic.c:214 __warn.cold+0x20/0x48 kernel/panic.c:571 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+0x11b/0x200 arch/x86/kernel/traps.c:271 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:290 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 RIP: 0010:tty_set_termios+0x93a/0xac0 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 ec 00 00 00 41 89 9f d0 03 00 00 e9 f6 fd ff ff e8 d6 18 a8 fd <0f> 0b e9 a9 f7 ff ff e8 4a 04 ec fd e9 48 f9 ff ff 4c 89 ef e8 9d RSP: 0018:ffff8880a756f600 EFLAGS: 00010293 RAX: ffff8880a7534300 RBX: ffff8880a756f6c0 RCX: ffffffff83d9d62d RDX: 0000000000000000 RSI: ffffffff83d9de8a RDI: 0000000000000005 RBP: ffff8880a756f6e8 R08: ffff8880a7534300 R09: fffffbfff181d7b5 R10: fffffbfff181d7b4 R11: 0000000000000003 R12: ffff8880a756f728 R13: 0000000000010004 R14: 000000000001c200 R15: ffff88808f78a8c0 hci_uart_set_baudrate+0x1cc/0x250 drivers/bluetooth/hci_ldisc.c:378 hci_uart_setup+0xa2/0x490 drivers/bluetooth/hci_ldisc.c:401 hci_dev_do_open+0x6b1/0x1920 net/bluetooth/hci_core.c:1423 hci_power_on+0x10d/0x880 net/bluetooth/hci_core.c:2130 process_one_work+0xd0c/0x1ce0 kernel/workqueue.c:2153 worker_thread+0x143/0x14a0 kernel/workqueue.c:2296 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds..