------------[ cut here ]------------
workqueue: work disable count underflowed
WARNING: kernel/workqueue.c:4436 at work_offqd_enable kernel/workqueue.c:4436 [inline], CPU#1: syz.4.476/7812
WARNING: kernel/workqueue.c:4436 at enable_work+0x1c7/0x230 kernel/workqueue.c:4607, CPU#1: syz.4.476/7812
Modules linked in:
CPU: 1 UID: 0 PID: 7812 Comm: syz.4.476 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:work_offqd_enable kernel/workqueue.c:4436 [inline]
RIP: 0010:enable_work+0x1c7/0x230 kernel/workqueue.c:4607
Code: af 0d 38 00 4d 85 f6 75 48 e8 a5 0d 38 00 eb 47 e8 9e 0d 38 00 90 0f 0b 90 e9 bc fe ff ff e8 90 0d 38 00 48 8d 3d 09 82 a8 0e <67> 48 0f b9 3a e9 d2 fe ff ff e8 7a 0d 38 00 90 0f 0b 90 e9 1d ff
RSP: 0018:ffffc900026d7998 EFLAGS: 00010087
RAX: ffffffff818db120 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90006131000 RSI: 0000000000000573 RDI: ffffffff90363330
RBP: 0000000000000000 R08: ffff8880769bcef7 R09: 1ffff1100ed379de
R10: dffffc0000000000 R11: ffffed100ed379df R12: 1ffff1100ed379de
R13: 001fffffffc00001 R14: ffff8880769bcef0 R15: 0000000000000000
FS:  00007efd1f5876c0(0000) GS:ffff888125325000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f30069d5d58 CR3: 000000005522c000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __cancel_work_sync+0xf7/0x110 kernel/workqueue.c:4477
 lec_arp_destroy net/atm/lec.c:1501 [inline]
 lec_atm_close+0x171/0x9e0 net/atm/lec.c:497
 vcc_destroy_socket net/atm/common.c:181 [inline]
 vcc_release+0x10f/0x580 net/atm/common.c:205
 svc_release+0x6c/0xd0 net/atm/svc.c:95
 __sock_release net/socket.c:722 [inline]
 sock_close+0xc3/0x240 net/socket.c:1514
 __fput+0x44f/0xa60 fs/file_table.c:510
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 get_signal+0x11eb/0x1330 kernel/signal.c:2809
 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
 exit_to_user_mode_loop+0x86/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:238 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:328 [inline]
 do_syscall_64+0x33e/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efd1e79c819
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:00007efd1f587028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007efd1ea15fa0 RCX: 00007efd1e79c819
RDX: 0000000000000000 RSI: 00000000000061d0 RDI: 000000000000000a
RBP: 00007efd1e832c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efd1ea16038 R14: 00007efd1ea15fa0 R15: 00007fff88d60078
 </TASK>
----------------
Code disassembly (best guess):
   0:	af                   	scas   %es:(%rdi),%eax
   1:	0d 38 00 4d 85       	or     $0x854d0038,%eax
   6:	f6 75 48             	divb   0x48(%rbp)
   9:	e8 a5 0d 38 00       	call   0x380db3
   e:	eb 47                	jmp    0x57
  10:	e8 9e 0d 38 00       	call   0x380db3
  15:	90                   	nop
  16:	0f 0b                	ud2
  18:	90                   	nop
  19:	e9 bc fe ff ff       	jmp    0xfffffeda
  1e:	e8 90 0d 38 00       	call   0x380db3
  23:	48 8d 3d 09 82 a8 0e 	lea    0xea88209(%rip),%rdi        # 0xea88233
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 d2 fe ff ff       	jmp    0xffffff06
  34:	e8 7a 0d 38 00       	call   0x380db3
  39:	90                   	nop
  3a:	0f 0b                	ud2
  3c:	90                   	nop
  3d:	e9                   	.byte 0xe9
  3e:	1d                   	.byte 0x1d
  3f:	ff                   	.byte 0xff