WARNING: CPU: 1 PID: 3883 at kernel/locking/lockdep.c:4548 remove_class_from_lock_chain kernel/locking/lockdep.c:4528 [inline] WARNING: CPU: 1 PID: 3883 at kernel/locking/lockdep.c:4548 remove_class_from_lock_chains kernel/locking/lockdep.c:4568 [inline] WARNING: CPU: 1 PID: 3883 at kernel/locking/lockdep.c:4548 zap_class+0x745/0xde0 kernel/locking/lockdep.c:4607 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 3883 Comm: kworker/1:2 Not tainted 5.1.0-rc5+ #69 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:4548 [inline] RIP: 0010:remove_class_from_lock_chains kernel/locking/lockdep.c:4568 [inline] RIP: 0010:zap_class+0x745/0xde0 kernel/locking/lockdep.c:4607 Code: 0f b6 14 30 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 10 fe 51 00 e9 64 ff ff ff <0f> 0b e8 94 c9 d6 01 e9 4e fb ff ff 48 89 55 c0 4c 89 4d c8 e8 32 RSP: 0018:ffff8880572c7ba8 EFLAGS: 00010012 RAX: 0000000000010000 RBX: dec92e86d35e0da7 RCX: ffffffff832f45de RDX: 0000000000005e6a RSI: ffffffff832f462a RDI: 0000000000000006 RBP: ffff8880572c7c00 R08: ffff888096588080 R09: ffffffff8a09ea70 R10: 0000000000210391 R11: 000000000391081e R12: ffffffff89c33688 R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff89c33680 __lockdep_free_key_range+0x64/0x120 kernel/locking/lockdep.c:4730 lockdep_unregister_key+0x2bf/0x510 kernel/locking/lockdep.c:4921 wq_unregister_lockdep kernel/workqueue.c:3455 [inline] pwq_unbound_release_workfn+0x233/0x2f0 kernel/workqueue.c:3675 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 Kernel Offset: disabled Rebooting in 86400 seconds..