BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 13013 Comm: syz.3.10468 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x1a9/0x280
 register_lock_class+0x2dc/0x320
 __lock_acquire+0xad/0x2cf0
 lock_acquire+0x116/0x340
 _raw_spin_lock_bh+0x36/0x50
 dev_reset_queue+0x138/0x1b0
 dev_deactivate_many+0x720/0xd40
 __dev_close_many+0x17b/0x6d0
 netif_close_many+0x225/0x420
 unregister_netdevice_many_notify+0xb47/0x2370
 unregister_netdevice_queue+0x31f/0x360
 __tun_detach+0x6d9/0x15d0
 tun_chr_close+0x10a/0x1c0
 __fput+0x44f/0xa70
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0xfd/0x490
 do_syscall_64+0x2c6/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fafdcb9acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe00fed628 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffe00fed710 RCX: 00007fafdcb9acb9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00000000000e37b7 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b2fd20000 R11: 0000000000000246 R12: 00007ffe00fed750
R13: 00007fafdce05fac R14: 00000000000e3825 R15: 00007fafdce05fa0
 </TASK>
