BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 1 PID: 4330 Comm: kworker/u4:1 Not tainted 5.6.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 add_chain_cache kernel/locking/lockdep.c:2840 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:2914 [inline]
 validate_chain kernel/locking/lockdep.c:2935 [inline]
 __lock_acquire.cold+0x263/0x288 kernel/locking/lockdep.c:3954
 lock_acquire+0x197/0x420 kernel/locking/lockdep.c:4484
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:343 [inline]
 netif_addr_lock_bh include/linux/netdevice.h:4162 [inline]
 dev_uc_flush+0x19/0x30 net/core/dev_addr_lists.c:710
 rollback_registered_many+0x801/0xe70 net/core/dev.c:8820
 unregister_netdevice_many.part.0+0x16/0x1e0 net/core/dev.c:9966
 unregister_netdevice_many net/core/dev.c:9965 [inline]
 default_device_exit_batch+0x311/0x3d0 net/core/dev.c:10442
 ops_exit_list.isra.0+0x103/0x150 net/core/net_namespace.c:175
 cleanup_net+0x511/0xa50 net/core/net_namespace.c:589
 process_one_work+0x94b/0x1690 kernel/workqueue.c:2266
 worker_thread+0x96/0xe20 kernel/workqueue.c:2412
 kthread+0x357/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
device team_slave_1 left promiscuous mode
@þ (unregistering): Port device team_slave_1 removed
@þ (unregistering): Port device team_slave_0 removed
bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
device bond_slave_1 left promiscuous mode
bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
device bond_slave_0 left promiscuous mode
bond0 (unregistering): Released all slaves