------------[ cut here ]------------
WARNING: CPU: 1 PID: 4342 at kernel/locking/lockdep.c:4819 remove_class_from_lock_chain kernel/locking/lockdep.c:4799 [inline]
WARNING: CPU: 1 PID: 4342 at kernel/locking/lockdep.c:4819 remove_class_from_lock_chains kernel/locking/lockdep.c:4839 [inline]
WARNING: CPU: 1 PID: 4342 at kernel/locking/lockdep.c:4819 zap_class+0x76b/0xe60 kernel/locking/lockdep.c:4879
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 4342 Comm: kworker/1:0 Not tainted 5.4.0-rc3-next-20191015 #0
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+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x35 kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 fixup_bug arch/x86/kernel/traps.c:169 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028
RIP: 0010:remove_class_from_lock_chain kernel/locking/lockdep.c:4819 [inline]
RIP: 0010:remove_class_from_lock_chains kernel/locking/lockdep.c:4839 [inline]
RIP: 0010:zap_class+0x76b/0xe60 kernel/locking/lockdep.c:4879
Code: c1 e8 03 42 0f b6 14 30 4c 89 e0 83 e0 07 83 c0 01 38 d0 7c 80 84 d2 0f 84 78 ff ff ff 4c 89 e7 e8 6a 3a 56 00 e9 6b ff ff ff <0f> 0b e8 0e e2 e6 01 e9 4e fb ff ff 48 89 4d a8 48 89 55 c0 e8 8c
RSP: 0018:ffff88807f38fc00 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffffff8a2bbf20 RCX: 0000000000000b02
RDX: 0000000000000000 RSI: ffffffff8341567a RDI: 0000000000000006
RBP: ffff88807f38fc68 R08: ffff88806089a440 R09: fffffbfff14eef22
R10: fffffbfff14eef21 R11: ffffffff8a77790f R12: ffffffff8a7330d0
R13: ffffffff8a303b88 R14: dffffc0000000000 R15: ffffffff8a303b80
 __lockdep_free_key_range+0x64/0x120 kernel/locking/lockdep.c:5002
 lockdep_unregister_key+0x201/0x4c0 kernel/locking/lockdep.c:5194
 wq_unregister_lockdep kernel/workqueue.c:3455 [inline]
 pwq_unbound_release_workfn+0x233/0x2f0 kernel/workqueue.c:3675
 process_one_work+0x9af/0x1740 kernel/workqueue.c:2269
 worker_thread+0x98/0xe40 kernel/workqueue.c:2415
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Shutting down cpus with NMI
Kernel Offset: disabled
Rebooting in 86400 seconds..