------------[ cut here ]------------ WARNING: CPU: 0 PID: 8558 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: 8558 Comm: syz-executor.0 Not tainted 6.1.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: [<817513c4>] (dump_backtrace) from [<817514b8>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:253) r7:81cf8850 r6:822228ec r5:60000093 r4:81d06c38 [<817514a0>] (show_stack) from [<8176d168>] (__dump_stack lib/dump_stack.c:88 [inline]) [<817514a0>] (show_stack) from [<8176d168>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<8176d120>] (dump_stack_lvl) from [<8176d18c>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000000 r4:82445d14 [<8176d174>] (dump_stack) from [<81752060>] (panic+0x11c/0x360 kernel/panic.c:274) [<81751f44>] (panic) from [<80241604>] (__warn+0x98/0x1a4 kernel/panic.c:621) r3:00000001 r2:00000000 r1:00000000 r0:81cf8850 r7:80263588 [<8024156c>] (__warn) from [<8175230c>] (warn_slowpath_fmt+0x68/0xd4 kernel/panic.c:644) r8:00000009 r7:80263588 r6:0000115a r5:81cf9c68 r4:00000000 [<817522a8>] (warn_slowpath_fmt) from [<80263588>] (destroy_workqueue+0x100/0x240 kernel/workqueue.c:4442) r8:83e77d90 r7:8536b410 r6:8536b400 r5:83dcb800 r4:83dcb81c [<80263488>] (destroy_workqueue) from [<816df16c>] (nci_unregister_device+0x30/0x98 net/nfc/nci/core.c:1293) r7:85c3e000 r6:85c3e000 r5:000e001b r4:824fa0e4 [<816df13c>] (nci_unregister_device) from [<809f57c4>] (virtual_ncidev_close+0x64/0x7c drivers/nfc/virtual_ncidev.c:166) r9:7efffd08 r8:83e77d90 r7:833ebc50 r6:82f0e770 r5:000e001b r4:824fa0e4 [<809f5760>] (virtual_ncidev_close) from [<804a9b1c>] (__fput+0x84/0x264 fs/file_table.c:320) r5:000e001b r4:84fb6e40 [<804a9a98>] (__fput) from [<804a9d78>] (____fput+0x10/0x14 fs/file_table.c:348) r9:7efffd08 r8:828efb44 r7:824465dc r6:828ef300 r5:828efb14 r4:00000000 [<804a9d68>] (____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:ec6b9fb0 r4:828ef300 [<8020bc50>] (do_work_pending) from [<80200088>] (slow_work_pending+0xc/0x20) Exception stack(0xec6b9fb0 to 0xec6b9ff8) 9fa0: 00000000 00000002 00000000 00000003 9fc0: 00000004 010564c0 00000000 00000006 00140000 000003e8 0014c168 0014c168 9fe0: 2f560000 7ee62408 0002993c 00029df8 80000010 00000003 r10:00000006 r9:828ef300 r8:80200288 r7:00000006 r6:00000000 r5:010564c0 r4:00000004 Rebooting in 86400 seconds..