------------[ cut here ]------------
WARNING: CPU: 1 PID: 4562 at kernel/workqueue.c:1441 __queue_work+0xddc/0xf90
Modules linked in:
CPU: 1 PID: 4562 Comm: kworker/u4:15 Not tainted 6.1.111-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: netns cleanup_net
RIP: 0010:__queue_work+0xddc/0xf90 kernel/workqueue.c:1441
Code: 8b 3c 24 e8 a6 a0 88 00 e9 d9 fc ff ff e8 6c 1e 31 00 89 ee 48 c7 c7 80 99 1d 8d e8 1e 20 0b 03 e9 1e fc ff ff e8 54 1e 31 00 <0f> 0b 48 83 c4 50 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 3e 1e 31 00
RSP: 0018:ffffc900001e0af8 EFLAGS: 00010046
RAX: ffffffff815990ec RBX: 00000000000b0012 RCX: ffff8880266a3b80
RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000
RBP: 0000000000010000 R08: ffffffff815a7e95 R09: fffffbfff1d33cae
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000008 R15: ffff888024ca0800
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8f12fd3f98 CR3: 000000007774b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1544 [inline]
 __run_timers+0x6a8/0x890 kernel/time/timer.c:1820
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
 __do_softirq kernel/softirq.c:605 [inline]
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:preempt_schedule_irq+0xf2/0x1c0 kernel/sched/core.c:6870
Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 97 00 00 00 bf 01 00 00 00 e8 e9 f2 ae f6 e8 14 ef e1 f6 fb bf 01 00 00 00 <e8> 79 b4 ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 d9 ae 32 f7 48
RSP: 0018:ffffc90017f675e0 EFLAGS: 00000282
RAX: 77a167025bd65a00 RBX: 1ffff92002fecec4 RCX: ffffffff816af0fa
RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: 0000000000000001
RBP: ffffc90017f67690 R08: dffffc0000000000 R09: fffffbfff223b846
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92002fecebc
R13: 1ffff92002fecec0 R14: ffffc90017f67600 R15: dffffc0000000000
 irqentry_exit+0x53/0x80 kernel/entry/common.c:439
 asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:658
RIP: 0010:synchronize_rcu+0x0/0x3f0 kernel/rcu/tree.c:3566
Code: 5e 41 5f e9 62 00 e6 ff 5b 41 5c 41 5e 41 5f c3 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c d9 fe ff ff e8 d5 95 6e 00 e9 cf fe ff ff <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 40 01
RSP: 0018:ffffc90017f67758 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92002fecef4 RCX: ffffffff97333103
RDX: 0000000000000001 RSI: ffffffff8b0c1020 RDI: ffffffff8b5d6dc0
RBP: ffffc90017f67840 R08: dffffc0000000000 R09: fffffbfff2e5c8ac
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888076b80a98
R13: 1ffff92002fecef0 R14: 0000000000000203 R15: ffffc90017f677a0
 lockdep_unregister_key+0x537/0x5e0 kernel/locking/lockdep.c:6355
 __qdisc_destroy+0x127/0x450 net/sched/sch_generic.c:1069
 netdev_for_each_tx_queue include/linux/netdevice.h:2453 [inline]
 dev_shutdown+0x9d/0x440 net/sched/sch_generic.c:1480
 unregister_netdevice_many+0xaac/0x17a0 net/core/dev.c:10873
 default_device_exit_batch+0x956/0x9d0 net/core/dev.c:11395
 ops_exit_list net/core/net_namespace.c:177 [inline]
 cleanup_net+0x763/0xb60 net/core/net_namespace.c:604
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
----------------
Code disassembly (best guess):
   0:	89 f5                	mov    %esi,%ebp
   2:	49 c1 ed 03          	shr    $0x3,%r13
   6:	eb 0d                	jmp    0x15
   8:	48 f7 03 08 00 00 00 	testq  $0x8,(%rbx)
   f:	0f 84 97 00 00 00    	je     0xac
  15:	bf 01 00 00 00       	mov    $0x1,%edi
  1a:	e8 e9 f2 ae f6       	call   0xf6aef308
  1f:	e8 14 ef e1 f6       	call   0xf6e1ef38
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 79 b4 ff ff       	call   0xffffb4a8 <-- trapping instruction
  2f:	43 80 7c 3d 00 00    	cmpb   $0x0,0x0(%r13,%r15,1)
  35:	74 08                	je     0x3f
  37:	4c 89 f7             	mov    %r14,%rdi
  3a:	e8 d9 ae 32 f7       	call   0xf732af18
  3f:	48                   	rex.W