[    2.429337] ip (250) used greatest stack depth: 12136 bytes left
[   17.267483] ------------[ cut here ]------------
[   17.267557] refcount_t: underflow; use-after-free.
[   17.267622] WARNING: CPU: 1 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[   17.267714] Modules linked in: dummy veth nf_log_syslog nft_log nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nf_tables
[   17.267834] CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[   17.267930] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.267995] Workqueue: netns cleanup_net
[   17.268040] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[   17.268100] Code: 87 e8 18 ed b9 ff 90 0f 0b 90 90 c3 80 3d d9 ea ea 00 00 75 89 c6 05 d0 ea ea 00 01 90 48 c7 c7 78 de 31 87 e8 f5 ec b9 ff 90 <0f> 0b 90 90 c3 80 3d b4 ea ea 00 00 0f 85 62 ff ff ff c6 05 a7 ea
[   17.268289] RSP: 0018:ffffbd9ac0067d50 EFLAGS: 00010286
[   17.268348] RAX: 0000000000000000 RBX: ffffbd9ac0067d60 RCX: 00000000ffffdfff
[   17.268431] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   17.268514] RBP: ffffbd9ac0067868 R08: ffffffff87756d28 R09: 00000000ffffdfff
[   17.268591] R10: ffffffff87676d40 R11: ffffffff87726d40 R12: dead000000000122
[   17.268668] R13: 00000000fffbaf0a R14: 0000000000000001 R15: ffff9f4ec112e000
[   17.268747] FS:  0000000000000000(0000) GS:ffff9f4f76e58000(0000) knlGS:0000000000000000
[   17.268823] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.268889] CR2: 00007ffd5dcdb458 CR3: 0000000004a16004 CR4: 0000000000772ef0
[   17.268962] PKRU: 55555554
[   17.268992] Call Trace:
[   17.269017]  <TASK>
[   17.269040]  netdev_run_todo+0x21a/0x550
[   17.269087]  ops_undo_list+0x1e3/0x1f0
[   17.269131]  cleanup_net+0x1b7/0x2b0
[   17.269174]  process_one_work+0x162/0x380
[   17.269221]  worker_thread+0x299/0x3c0
[   17.269263]  ? rescuer_thread+0x4c0/0x4c0
[   17.269299]  kthread+0x101/0x1f0
[   17.269344]  ? kthreads_online_cpu+0x110/0x110
[   17.269398]  ? kthreads_online_cpu+0x110/0x110
[   17.269452]  ret_from_fork+0x11c/0x140
[   17.269499]  ? kthreads_online_cpu+0x110/0x110
[   17.269549]  ret_from_fork_asm+0x11/0x20
[   17.269598]  </TASK>
[   17.269623] ---[ end trace 0000000000000000 ]---