Bluetooth: hci0 command 0x0419 tx timeout ------------[ cut here ]------------ WARNING: CPU: 0 PID: 26702 at kernel/signal.c:358 task_participate_group_stop+0x237/0x2b0 kernel/signal.c:358 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 26702 Comm: exe Not tainted 4.14.229-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 panic+0x1f9/0x42d kernel/panic.c:183 __warn.cold+0x20/0x44 kernel/panic.c:547 report_bug+0x208/0x250 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964 RIP: 0010:task_participate_group_stop+0x237/0x2b0 kernel/signal.c:358 RSP: 0018:ffff8880a233fbc0 EFLAGS: 00010097 RAX: ffff888098ac2440 RBX: 0000000000000000 RCX: 0000000000007cec RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888098ac2b40 RBP: ffff8880a5356e98 R08: ffffffff8b9ce220 R09: 00000000000c008d R10: ffff888098ac2cc8 R11: ffff888098ac2440 R12: ffff8880a5356e00 R13: ffff888098ac28d0 R14: 0000000000040000 R15: 0000000000000016 do_signal_stop+0x1ab/0x770 kernel/signal.c:2112 get_signal+0xd2c/0x1ca0 kernel/signal.c:2298 do_signal+0x7c/0x1550 arch/x86/kernel/signal.c:792 exit_to_usermode_loop+0x160/0x200 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x402e70 RSP: 002b:00007fffc91ac590 EFLAGS: 00000200 ORIG_RAX: 000000000000003b RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..