------------[ cut here ]------------
WARNING: CPU: 0 PID: 4332 at kernel/workqueue.c:1441 __queue_work+0xddc/0xf90 kernel/workqueue.c:-1
Modules linked in:
CPU: 0 PID: 4332 Comm: kworker/u4:6 Not tainted 6.1.133-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: netns cleanup_net
RIP: 0010:__queue_work+0xddc/0xf90 kernel/workqueue.c:1441
Code: 8b 3c 24 e8 96 55 88 00 e9 d9 fc ff ff e8 5c f4 30 00 89 ee 48 c7 c7 00 c6 1d 8d e8 fe 5d 15 03 e9 1e fc ff ff e8 44 f4 30 00 <0f> 0b 48 83 c4 50 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 2e f4 30 00
RSP: 0018:ffffc90000007bb8 EFLAGS: 00010046
RAX: ffffffff8159b60c RBX: 00000000000b0012 RCX: ffff888025893b80
RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000
RBP: 0000000000010000 R08: ffffffff815aa2a5 R09: fffffbfff1d41776
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000008 R15: ffff88807a6bf000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff70ed9800 CR3: 000000007e56d000 CR4: 00000000003506f0
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:578
 do_softirq+0x162/0x240 kernel/softirq.c:479
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x1b1/0x1f0 kernel/softirq.c:403
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 del_nbp+0x17b/0xb30 net/bridge/br_if.c:344
 br_dev_delete+0x68/0x100 net/bridge/br_if.c:386
 default_device_exit_batch+0x8ee/0xa20 net/core/dev.c:11486
 ops_exit_list net/core/net_namespace.c:177 [inline]
 cleanup_net+0x886/0xd20 net/core/net_namespace.c:640
 process_one_work+0x917/0x1260 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>