Bluetooth: hci2: command 0x1009 tx timeout Bluetooth: hci3: command 0x1009 tx timeout WARNING: CPU: 1 PID: 16596 at kernel/locking/lockdep.c:4539 remove_class_from_lock_chain kernel/locking/lockdep.c:4519 [inline] WARNING: CPU: 1 PID: 16596 at kernel/locking/lockdep.c:4539 remove_class_from_lock_chains kernel/locking/lockdep.c:4559 [inline] WARNING: CPU: 1 PID: 16596 at kernel/locking/lockdep.c:4539 zap_class+0x741/0xe20 kernel/locking/lockdep.c:4598 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 16596 Comm: kworker/1:1 Not tainted 5.0.0-next-20190306 #4 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events pwq_unbound_release_workfn 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:remove_class_from_lock_chain kernel/locking/lockdep.c:4539 [inline] RIP: 0010:remove_class_from_lock_chains kernel/locking/lockdep.c:4559 [inline] RIP: 0010:zap_class+0x741/0xe20 kernel/locking/lockdep.c:4598 Code: 0f b6 14 38 4c 89 e0 83 e0 07 83 c0 01 38 d0 0f 8c 79 ff ff ff 84 d2 0f 84 71 ff ff ff 4c 89 e7 e8 f4 f4 51 00 e9 64 ff ff ff <0f> 0b e8 08 b5 d6 01 e9 4e fb ff ff 48 89 55 c0 4c 89 4d c8 e8 16 RSP: 0018:ffff888068927c10 EFLAGS: 00010012 RAX: 0000000000010000 RBX: e4222f2398534da2 RCX: ffffffff832f346e RDX: 00000000000029e7 RSI: ffffffff832f34ba RDI: 0000000000000006 RBP: ffff888068927c68 R08: ffff8880381a2500 R09: ffffffff8a083618 R10: 0000000000000bad R11: 000000000bad098a R12: ffffffff89c63e28 R13: 0000000000000000 R14: ffffffff89c63e20 R15: dffffc0000000000 __lockdep_free_key_range+0x64/0x120 kernel/locking/lockdep.c:4721 lockdep_unregister_key+0x201/0x4c0 kernel/locking/lockdep.c:4917 wq_unregister_lockdep kernel/workqueue.c:3453 [inline] pwq_unbound_release_workfn+0x233/0x2f0 kernel/workqueue.c:3673 process_one_work+0x98e/0x1790 kernel/workqueue.c:2269 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x357/0x430 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Shutting down cpus with NMI Kernel Offset: disabled Rebooting in 86400 seconds..