[    2.317648] ip (247) used greatest stack depth: 12136 bytes left
[    8.523316] ------------[ cut here ]------------
[    8.523414] refcount_t: underflow; use-after-free.
[    8.523499] WARNING: CPU: 0 PID: 68 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    8.523595] Modules linked in: nft_masq nft_chain_nat nf_nat nft_ct nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables veth
[    8.523733] CPU: 0 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    8.523834] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    8.523909] Workqueue: netns cleanup_net
[    8.523958] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    8.524017] Code: af 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 b1 af 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
[    8.524204] RSP: 0018:ffffb3eec025fd50 EFLAGS: 00010286
[    8.524274] RAX: 0000000000000000 RBX: ffffb3eec025fd60 RCX: 00000000ffffdfff
[    8.524358] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    8.524439] RBP: ffffb3eec025f868 R08: ffffffffaff56d28 R09: 00000000ffffdfff
[    8.524514] R10: ffffffffafe76d40 R11: ffffffffaff26d40 R12: dead000000000122
[    8.524594] R13: 00000000fffb8ce7 R14: 0000000000000001 R15: ffff9e1f83091000
[    8.524671] FS:  0000000000000000(0000) GS:ffff9e200e5d8000(0000) knlGS:0000000000000000
[    8.524758] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    8.524827] CR2: 00005576292636e8 CR3: 00000000033d1003 CR4: 0000000000772ef0
[    8.524908] PKRU: 55555554
[    8.524938] Call Trace:
[    8.524966]  <TASK>
[    8.525000]  netdev_run_todo+0x21a/0x550
[    8.525052]  ops_undo_list+0x1e3/0x1f0
[    8.525105]  cleanup_net+0x1b7/0x2b0
[    8.525145]  process_one_work+0x162/0x380
[    8.525200]  worker_thread+0x299/0x3c0
[    8.525254]  ? rescuer_thread+0x4c0/0x4c0
[    8.525303]  kthread+0x101/0x1f0
[    8.525350]  ? kthreads_online_cpu+0x110/0x110
[    8.525409]  ? kthreads_online_cpu+0x110/0x110
[    8.525469]  ret_from_fork+0x11c/0x140
[    8.525525]  ? kthreads_online_cpu+0x110/0x110
[    8.525586]  ret_from_fork_asm+0x11/0x20
[    8.525636]  </TASK>
[    8.525668] ---[ end trace 0000000000000000 ]---