------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(1)
WARNING: kernel/locking/lockdep.c:238 at __lock_acquire+0x39d/0x2cf0, CPU#0: syz.0.2353/14350
Modules linked in:
CPU: 0 UID: 0 PID: 14350 Comm: syz.0.2353 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
RIP: 0010:__lock_acquire+0x3a4/0x2cf0
Code: 18 00 4c 8b 74 24 08 75 27 90 e8 97 c5 f5 02 85 c0 74 1c 83 3d 40 e1 2f 0e 00 75 13 48 8d 3d b3 f7 32 0e 48 c7 c6 8a e5 be 8d <67> 48 0f b9 3a 90 31 c0 0f b6 98 c4 00 00 00 41 8b 45 20 25 ff 1f
RSP: 0018:ffffc90003607680 EFLAGS: 00010046
RAX: 0000000000000001 RBX: 0000000000040000 RCX: 0000000000080000
RDX: ffffc90009d11000 RSI: ffffffff8dbee58a RDI: ffffffff8fd23020
RBP: 0000000000000003 R08: ffffffff8fcf19a3 R09: 1ffffffff1f9e334
R10: dffffc0000000000 R11: fffffbfff1f9e335 R12: 0000000000001535
R13: ffff888113ad4628 R14: ffff888113ad3a80 R15: ffff888113ad45b0
FS:  00007f1d365d46c0(0000) GS:ffff88818e323000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff7441a020 CR3: 0000000117f76000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lock_acquire+0x106/0x330
 touch_wq_lockdep_map+0xcb/0x180
 __flush_workqueue+0x14b/0x14f0
 nci_close_device+0x302/0x630
 nci_dev_down+0x3b/0x50
 nfc_dev_down+0x152/0x290
 nfc_rfkill_set_block+0x2d/0x100
 rfkill_set_block+0x1d2/0x440
 rfkill_fop_write+0x461/0x5a0
 vfs_write+0x29a/0xb90
 ksys_write+0x150/0x270
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1d3579acb9
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:00007f1d365d4028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1d35a15fa0 RCX: 00007f1d3579acb9
RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003
RBP: 00007f1d35808bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1d35a16038 R14: 00007f1d35a15fa0 R15: 00007fff74419c28
 </TASK>
