[    5.466608] ------------[ cut here ]------------
[    5.466683] refcount_t: underflow; use-after-free.
[    5.466744] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    5.466823] Modules linked in: nft_synproxy nf_synproxy_core nft_ct nf_tables veth nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4
[    5.466925] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    5.467002] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    5.467058] Workqueue: netns cleanup_net
[    5.467096] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    5.467144] Code: a3 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 71 a3 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
[    5.467297] RSP: 0018:ffffae6e40067d50 EFLAGS: 00010286
[    5.467336] RAX: 0000000000000000 RBX: ffffae6e40067d60 RCX: 00000000ffffdfff
[    5.467398] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    5.467462] RBP: ffffae6e40067868 R08: ffffffffa3b56d28 R09: 00000000ffffdfff
[    5.467523] R10: ffffffffa3a76d40 R11: ffffffffa3b26d40 R12: dead000000000122
[    5.467593] R13: 00000000fffb80db R14: 0000000000000001 R15: ffff9fd404f3c000
[    5.467661] FS:  0000000000000000(0000) GS:ffff9fd49a9d8000(0000) knlGS:0000000000000000
[    5.467725] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    5.467784] CR2: 0000561f28050f38 CR3: 00000000072b0003 CR4: 0000000000772ef0
[    5.467844] PKRU: 55555554
[    5.467867] Call Trace:
[    5.467889]  <TASK>
[    5.467914]  netdev_run_todo+0x21a/0x550
[    5.467955]  ops_undo_list+0x1e3/0x1f0
[    5.467995]  cleanup_net+0x1b7/0x2b0
[    5.468026]  process_one_work+0x162/0x380
[    5.468068]  worker_thread+0x299/0x3c0
[    5.468104]  ? rescuer_thread+0x4c0/0x4c0
[    5.468140]  kthread+0x101/0x1f0
[    5.468178]  ? kthreads_online_cpu+0x110/0x110
[    5.468222]  ? kthreads_online_cpu+0x110/0x110
[    5.468267]  ret_from_fork+0x11c/0x140
[    5.468309]  ? kthreads_online_cpu+0x110/0x110
[    5.468355]  ret_from_fork_asm+0x11/0x20
[    5.468393]  </TASK>
[    5.468418] ---[ end trace 0000000000000000 ]---