------------[ cut here ]------------
WARNING: CPU: 0 PID: 6574 at kernel/workqueue.c:4442 destroy_workqueue+0x100/0x240 kernel/workqueue.c:4442
Modules linked in:
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 6574 Comm: syz-executor.1 Not tainted 6.1.0-rc6-syzkaller #0
Hardware name: ARM-Versatile Express
Backtrace: 
[<81751604>] (dump_backtrace) from [<817516f8>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:253)
 r7:81cf8970 r6:822228ec r5:60000093 r4:81d06d58
[<817516e0>] (show_stack) from [<8176d3c0>] (__dump_stack lib/dump_stack.c:88 [inline])
[<817516e0>] (show_stack) from [<8176d3c0>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106)
[<8176d378>] (dump_stack_lvl) from [<8176d3e4>] (dump_stack+0x18/0x1c lib/dump_stack.c:113)
 r5:00000000 r4:82445d14
[<8176d3cc>] (dump_stack) from [<817522a0>] (panic+0x11c/0x360 kernel/panic.c:274)
[<81752184>] (panic) from [<80241604>] (__warn+0x98/0x1a4 kernel/panic.c:621)
 r3:00000001 r2:00000000 r1:00000000 r0:81cf8970
 r7:80263588
[<8024156c>] (__warn) from [<8175254c>] (warn_slowpath_fmt+0x68/0xd4 kernel/panic.c:644)
 r8:00000009 r7:80263588 r6:0000115a r5:81cf9d88 r4:00000000
[<817524e8>] (warn_slowpath_fmt) from [<80263588>] (destroy_workqueue+0x100/0x240 kernel/workqueue.c:4442)
 r8:830b4850 r7:82adb210 r6:82adb200 r5:83bbd400 r4:83bbd41c
[<80263488>] (destroy_workqueue) from [<816df39c>] (nci_unregister_device+0x30/0x98 net/nfc/nci/core.c:1293)
 r7:8501f800 r6:8501f800 r5:000e001b r4:824fa0e4
[<816df36c>] (nci_unregister_device) from [<809f597c>] (virtual_ncidev_close+0x64/0x7c drivers/nfc/virtual_ncidev.c:166)
 r9:7efffd08 r8:830b4850 r7:83b98450 r6:83526110 r5:000e001b r4:824fa0e4
[<809f5918>] (virtual_ncidev_close) from [<804a9d54>] (__fput+0x84/0x264 fs/file_table.c:320)
 r5:000e001b r4:8505fd80
[<804a9cd0>] (__fput) from [<804a9fb0>] (____fput+0x10/0x14 fs/file_table.c:348)
 r9:7efffd08 r8:828e6444 r7:824465dc r6:828e5c00 r5:828e6414 r4:00000000
[<804a9fa0>] (____fput) from [<8026618c>] (task_work_run+0x8c/0xb4 kernel/task_work.c:179)
[<80266100>] (task_work_run) from [<8020c070>] (resume_user_mode_work include/linux/resume_user_mode.h:49 [inline])
[<80266100>] (task_work_run) from [<8020c070>] (do_work_pending+0x420/0x524 arch/arm/kernel/signal.c:630)
 r9:7efffd08 r8:80200288 r7:fffffe30 r6:80200288 r5:eae01fb0 r4:828e5c00
[<8020bc50>] (do_work_pending) from [<80200088>] (slow_work_pending+0xc/0x20)
Exception stack(0xeae01fb0 to 0xeae01ff8)
1fa0:                                     00000000 00000002 00000000 00000005
1fc0: 00000006 014664c0 00000000 00000006 00140000 000003e8 0014c550 0014c550
1fe0: 2f960000 7ec0c400 0002a428 0002a8e4 80000010 00000005
 r10:00000006 r9:828e5c00 r8:80200288 r7:00000006 r6:00000000 r5:014664c0
 r4:00000006
SMP: failed to stop secondary CPUs
Rebooting in 86400 seconds..