[    2.328748] ip (251) used greatest stack depth: 12376 bytes left
[    2.528542] ip (264) used greatest stack depth: 12344 bytes left
[    2.539286] ip (266) used greatest stack depth: 12200 bytes left
[   21.317562] ------------[ cut here ]------------
[   21.317642] refcount_t: underflow; use-after-free.
[   21.317715] WARNING: CPU: 3 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[   21.317816] Modules linked in: nft_ct nf_conntrack_netlink nft_redir nft_masq tcp_diag inet_diag nft_nat nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables veth
[   21.317993] CPU: 3 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[   21.318099] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.318165] Workqueue: netns cleanup_net
[   21.318212] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[   21.318273] Code: ae 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 ae 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
[   21.318456] RSP: 0018:ffff9cf580067d50 EFLAGS: 00010286
[   21.318509] RAX: 0000000000000000 RBX: ffff9cf580067d60 RCX: 00000000ffffdfff
[   21.318593] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   21.318678] RBP: ffff9cf580067868 R08: ffffffffaeb56d28 R09: 00000000ffffdfff
[   21.318756] R10: ffffffffaea76d40 R11: ffffffffaeb26d40 R12: dead000000000122
[   21.318836] R13: 00000000fffbbedf R14: 0000000000000001 R15: ffff90264112f000
[   21.318937] FS:  0000000000000000(0000) GS:ffff9026cfb58000(0000) knlGS:0000000000000000
[   21.319021] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.319092] CR2: 00007fde92c8f600 CR3: 0000000004c56005 CR4: 0000000000772ef0
[   21.319178] PKRU: 55555554
[   21.319211] Call Trace:
[   21.319238]  <TASK>
[   21.319272]  netdev_run_todo+0x21a/0x550
[   21.319332]  ops_undo_list+0x1e3/0x1f0
[   21.319384]  cleanup_net+0x1b7/0x2b0
[   21.319423]  process_one_work+0x162/0x380
[   21.319480]  worker_thread+0x299/0x3c0
[   21.319531]  ? rescuer_thread+0x4c0/0x4c0
[   21.319580]  kthread+0x101/0x1f0
[   21.319631]  ? kthreads_online_cpu+0x110/0x110
[   21.319698]  ? kthreads_online_cpu+0x110/0x110
[   21.319759]  ret_from_fork+0x11c/0x140
[   21.319809]  ? kthreads_online_cpu+0x110/0x110
[   21.319869]  ret_from_fork_asm+0x11/0x20
[   21.319921]  </TASK>
[   21.319958] ---[ end trace 0000000000000000 ]---