BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 21886 Comm: syz.2.45889 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+0x189/0x250
 register_lock_class+0x2dc/0x320
 __lock_acquire+0xae/0x2cf0
 lock_acquire+0x117/0x340
 _raw_spin_lock_bh+0x36/0x50
 dev_reset_queue+0x138/0x1b0
 dev_deactivate_many+0x720/0xd40
 __dev_close_many+0x152/0x6b0
 netif_close_many+0x225/0x410
 unregister_netdevice_many_notify+0xb19/0x2310
 unregister_netdevice_queue+0x317/0x350
 __tun_detach+0x6d9/0x15d0
 tun_chr_close+0x10a/0x1c0
 __fput+0x44c/0xa70
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xff/0x4f0
 do_syscall_64+0x2e3/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcb8e38f7c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe2deab838 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 000000000029036c RCX: 00007fcb8e38f7c9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fcb8e5e7da0 R08: 0000000000000001 R09: 000000282deabb2f
R10: 0000001b30220000 R11: 0000000000000246 R12: 00007fcb8e5e5fac
R13: 00007fcb8e5e5fa0 R14: ffffffffffffffff R15: 00007ffe2deab950
 </TASK>
