BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 2 UID: 0 PID: 14 Comm: kworker/u32:1 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 register_lock_class+0x4a4/0x560 kernel/locking/lockdep.c:1332
 __lock_acquire+0x3cb/0x2630 kernel/locking/lockdep.c:5112
 lock_acquire kernel/locking/lockdep.c:5868 [inline]
 lock_acquire+0x17c/0x330 kernel/locking/lockdep.c:5825
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 dev_reset_queue+0xa9/0x1e0 net/sched/sch_generic.c:1308
 netdev_for_each_tx_queue include/linux/netdevice.h:2680 [inline]
 dev_deactivate_many+0x40b/0xc50 net/sched/sch_generic.c:1374
 __dev_close_many+0x150/0x700 net/core/dev.c:1753
 netif_close_many+0x233/0x630 net/core/dev.c:1794
 unregister_netdevice_many_notify+0x840/0x2580 net/core/dev.c:12366
 ops_exit_rtnl_list net/core/net_namespace.c:187 [inline]
 ops_undo_list+0x8ff/0xab0 net/core/net_namespace.c:248
 cleanup_net+0x419/0x830 net/core/net_namespace.c:696
 process_one_work+0x9c2/0x1840 kernel/workqueue.c:3257
 process_scheduled_works kernel/workqueue.c:3340 [inline]
 worker_thread+0x5da/0xe40 kernel/workqueue.c:3421
 kthread+0x3b3/0x730 kernel/kthread.c:463
 ret_from_fork+0x754/0xaf0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>