------------[ cut here ]------------
WARNING: CPU: 1 PID: 102 at kernel/workqueue.c:2257 __queue_work+0xc3a/0x1080 kernel/workqueue.c:2256
Modules linked in:
CPU: 1 UID: 0 PID: 102 Comm: kworker/u32:5 Not tainted 6.13.0-rc3-syzkaller-00136-g8faabc041a00 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: netns cleanup_net
RIP: 0010:__queue_work+0xc3a/0x1080 kernel/workqueue.c:2256
Code: 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 1f e7 98 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 10 7f 36 00 85 db 75 60 e8 c7 7c 36 00 90 <0f> 0b 90 e9 f9 f7 ff ff e8 b9 7c 36 00 90 0f 0b 90 e9 7e f6 ff ff
RSP: 0018:ffffc900005a0be8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000100 RCX: ffffffff8162d1d1
RDX: ffff88801f9d4880 RSI: ffffffff8162d229 RDI: 0000000000000005
RBP: ffff88805f604930 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000005 R12: 1ffff920000b418f
R13: 0000000000000001 R14: 0000000080000101 R15: ffff888069835800
FS:  0000000000000000(0000) GS:ffff88802b500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f329bba8 CR3: 000000004d794000 CR4: 0000000000352ef0
DR0: 0000000000000004 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x1a0/0x610 kernel/time/timer.c:1793
 expire_timers kernel/time/timer.c:1839 [inline]
 __run_timers+0x56a/0x930 kernel/time/timer.c:2418
 __run_timer_base kernel/time/timer.c:2430 [inline]
 __run_timer_base kernel/time/timer.c:2422 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2439
 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2449
 handle_softirqs+0x213/0x8f0 kernel/softirq.c:561
 __do_softirq kernel/softirq.c:595 [inline]
 invoke_softirq kernel/softirq.c:435 [inline]
 __irq_exit_rcu+0x109/0x170 kernel/softirq.c:662
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_single+0x1c7/0x580 kernel/smp.c:679
Code: c0 48 89 de 89 fa c1 e2 10 09 d0 89 44 24 4c e8 af fa ff ff 41 89 c5 0f 1f 44 00 00 e8 32 e2 0b 00 eb 07 e8 2b e2 0b 00 f3 90 <8b> 5c 24 48 31 ff 83 e3 01 89 de e8 59 e4 0b 00 85 db 75 e5 e8 10
RSP: 0018:ffffc900010ef7e0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff818d6cd7
RDX: ffff88801f9d4880 RSI: ffffffff818d6cc5 RDI: 0000000000000005
RBP: ffffc900010ef8a8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000005 R12: 1ffff9200021df00
R13: 0000000000000000 R14: 0000000000000001 R15: ffff88802b43fcc0
 rcu_barrier+0x28d/0x700 kernel/rcu/tree.c:4617
 wg_destruct+0x27f/0x3d0 drivers/net/wireguard/device.c:261
 netdev_run_todo+0x760/0x12d0 net/core/dev.c:10917
 default_device_exit_batch+0x745/0x9c0 net/core/dev.c:12074
 ops_exit_list+0x128/0x180 net/core/net_namespace.c:177
 cleanup_net+0x5b7/0xbd0 net/core/net_namespace.c:648
 process_one_work+0x958/0x1b30 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
----------------
Code disassembly (best guess):
   0:	c0 48 89 de          	rorb   $0xde,-0x77(%rax)
   4:	89 fa                	mov    %edi,%edx
   6:	c1 e2 10             	shl    $0x10,%edx
   9:	09 d0                	or     %edx,%eax
   b:	89 44 24 4c          	mov    %eax,0x4c(%rsp)
   f:	e8 af fa ff ff       	call   0xfffffac3
  14:	41 89 c5             	mov    %eax,%r13d
  17:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  1c:	e8 32 e2 0b 00       	call   0xbe253
  21:	eb 07                	jmp    0x2a
  23:	e8 2b e2 0b 00       	call   0xbe253
  28:	f3 90                	pause
* 2a:	8b 5c 24 48          	mov    0x48(%rsp),%ebx <-- trapping instruction
  2e:	31 ff                	xor    %edi,%edi
  30:	83 e3 01             	and    $0x1,%ebx
  33:	89 de                	mov    %ebx,%esi
  35:	e8 59 e4 0b 00       	call   0xbe493
  3a:	85 db                	test   %ebx,%ebx
  3c:	75 e5                	jne    0x23
  3e:	e8                   	.byte 0xe8
  3f:	10                   	.byte 0x10