BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 9923 Comm: syz.5.10908 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 register_lock_class+0x419/0x4c0 kernel/locking/lockdep.c:1332
 __lock_acquire+0x9f/0x1ce0 kernel/locking/lockdep.c:5112
 lock_acquire kernel/locking/lockdep.c:5868 [inline]
 lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5825
 touch_wq_lockdep_map+0xad/0x1c0 kernel/workqueue.c:3907
 __flush_workqueue+0x128/0x1230 kernel/workqueue.c:3949
 nci_close_device+0xcb/0x390 net/nfc/nci/core.c:567
 nci_unregister_device+0x38/0x300 net/nfc/nci/core.c:1312
 virtual_ncidev_close+0x4b/0xa0 drivers/nfc/virtual_ncidev.c:172
 __fput+0x402/0xb70 fs/file_table.c:468
 task_work_run+0x150/0x240 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x86f/0x2bf0 kernel/exit.c:961
 __do_sys_exit kernel/exit.c:1069 [inline]
 __se_sys_exit kernel/exit.c:1067 [inline]
 __x64_sys_exit+0x42/0x50 kernel/exit.c:1067
 x64_sys_call+0x14f5/0x1720 arch/x86/include/generated/asm/syscalls_64.h:61
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0e1fb8eba9
Code: Unable to access opcode bytes at 0x7f0e1fb8eb7f.
RSP: 002b:00007f0e2092ffe8 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
RAX: ffffffffffffffda RBX: 00007f0e1fdd5fa0 RCX: 00007f0e1fb8eba9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f0e1fc11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0e1fdd6038 R14: 00007f0e1fdd5fa0 R15: 00007ffcda3f30d8
 </TASK>