------------[ cut here ]------------
WARNING: CPU: 1 PID: 42 at kernel/workqueue.c:1441 __queue_work+0xe2d/0xfb0 kernel/workqueue.c:1441
Modules linked in:
CPU: 1 PID: 42 Comm: kworker/u4:3 Not tainted 6.1.140-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: netns cleanup_net
RIP: 0010:__queue_work+0xe2d/0xfb0 kernel/workqueue.c:1441
Code: e9 9d fc ff ff 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 0f 8c c7 fc ff ff 48 8b 3c 24 e8 8d 2d 7f 00 e9 b9 fc ff ff e8 93 b7 2d 00 <0f> 0b 48 83 c4 60 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 7d b7 2d 00
RSP: 0018:ffffc900001e0ae8 EFLAGS: 00010046
RAX: ffffffff81531f7d RBX: 0000000000010000 RCX: ffff88801be83b80
RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1bfd006
R10: fffffbfff1bfd006 R11: 1ffffffff1bfd005 R12: ffff888026088000
R13: ffff8880260881c0 R14: 0000000000000008 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffb7b6ae28 CR3: 000000005799d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 call_timer_fn+0x1a0/0x670 kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1544 [inline]
 __run_timers+0x550/0x7c0 kernel/time/timer.c:1820
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:661
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:lockdep_unregister_key+0x4c3/0x530 kernel/locking/lockdep.c:6370
Code: 81 86 90 48 c7 c6 e0 90 63 81 e8 88 93 07 00 e8 d3 a6 07 00 e9 86 fc ff ff e8 89 a0 ab 08 41 f7 c4 00 02 00 00 74 d1 fb 84 db <75> d0 eb e1 0f 0b eb a1 0f 0b e9 11 ff ff ff 0f 0b e9 5e ff ff ff
RSP: 0018:ffffc90000b375c0 EFLAGS: 00000246
RAX: e528cc0fecd4f700 RBX: 0000000000000000 RCX: e528cc0fecd4f700
RDX: 0000000000000001 RSI: ffffffff8a6c0ce0 RDI: ffffffff8abf1260
RBP: ffffc90000b376a0 R08: dffffc0000000000 R09: fffffbfff210d2b0
R10: fffffbfff210d2b0 R11: 1ffffffff210d2af R12: 0000000000000207
R13: ffff888076596299 R14: ffffffff90868198 R15: 1ffff92000166ebc
 __qdisc_destroy+0x128/0x430 net/sched/sch_generic.c:1078
 netdev_for_each_tx_queue include/linux/netdevice.h:2465 [inline]
 dev_shutdown+0x92/0x440 net/sched/sch_generic.c:1489
 unregister_netdevice_many+0xa32/0x1840 net/core/dev.c:10969
 ieee80211_remove_interfaces+0x429/0x6d0 net/mac80211/iface.c:2382
 ieee80211_unregister_hw+0x59/0x290 net/mac80211/main.c:1478
 mac80211_hwsim_del_radio+0x270/0x450 drivers/net/wireless/mac80211_hwsim.c:4683
 hwsim_exit_net+0x581/0x640 drivers/net/wireless/mac80211_hwsim.c:5470
 ops_exit_list net/core/net_namespace.c:172 [inline]
 cleanup_net+0x6f0/0xb80 net/core/net_namespace.c:640
 process_one_work+0x898/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
----------------
Code disassembly (best guess):
   0:	81 86 90 48 c7 c6 e0 	addl   $0x816390e0,-0x3938b770(%rsi)
   7:	90 63 81
   a:	e8 88 93 07 00       	call   0x79397
   f:	e8 d3 a6 07 00       	call   0x7a6e7
  14:	e9 86 fc ff ff       	jmp    0xfffffc9f
  19:	e8 89 a0 ab 08       	call   0x8aba0a7
  1e:	41 f7 c4 00 02 00 00 	test   $0x200,%r12d
  25:	74 d1                	je     0xfffffff8
  27:	fb                   	sti
  28:	84 db                	test   %bl,%bl
* 2a:	75 d0                	jne    0xfffffffc <-- trapping instruction
  2c:	eb e1                	jmp    0xf
  2e:	0f 0b                	ud2
  30:	eb a1                	jmp    0xffffffd3
  32:	0f 0b                	ud2
  34:	e9 11 ff ff ff       	jmp    0xffffff4a
  39:	0f 0b                	ud2
  3b:	e9 5e ff ff ff       	jmp    0xffffff9e