[    4.069784] ip (397) used greatest stack depth: 12072 bytes left
[   40.812571] ------------[ cut here ]------------
[   40.812706] refcount_t: underflow; use-after-free.
[   40.812836] WARNING: CPU: 2 PID: 68 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[   40.812938] Modules linked in: tcp_diag inet_diag nft_masq nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables veth
[   40.813074] CPU: 2 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[   40.813173] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   40.813267] Workqueue: netns cleanup_net
[   40.813305] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[   40.813366] Code: 8a 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 11 8a 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
[   40.813553] RSP: 0018:ffff98a60025fd50 EFLAGS: 00010286
[   40.813655] RAX: 0000000000000000 RBX: ffff98a60025fd60 RCX: 00000000ffffdfff
[   40.813752] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   40.813838] RBP: ffff98a60025f868 R08: ffffffff8a556d28 R09: 00000000ffffdfff
[   40.813916] R10: ffffffff8a476d40 R11: ffffffff8a526d40 R12: dead000000000122
[   40.813996] R13: 00000000fffc0b0e R14: 0000000000000001 R15: ffff8c2504b71000
[   40.814110] FS:  0000000000000000(0000) GS:ffff8c25b40d8000(0000) knlGS:0000000000000000
[   40.814191] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   40.814262] CR2: 00007ffde29d2688 CR3: 0000000004acf001 CR4: 0000000000772ef0
[   40.814350] PKRU: 55555554
[   40.814424] Call Trace:
[   40.814452]  <TASK>
[   40.814496]  netdev_run_todo+0x21a/0x550
[   40.814584]  ops_undo_list+0x1e3/0x1f0
[   40.814647]  cleanup_net+0x1b7/0x2b0
[   40.814702]  process_one_work+0x162/0x380
[   40.814763]  worker_thread+0x299/0x3c0
[   40.814819]  ? rescuer_thread+0x4c0/0x4c0
[   40.814873]  kthread+0x101/0x1f0
[   40.814928]  ? kthreads_online_cpu+0x110/0x110
[   40.814995]  ? kthreads_online_cpu+0x110/0x110
[   40.815064]  ret_from_fork+0x11c/0x140
[   40.815120]  ? kthreads_online_cpu+0x110/0x110
[   40.815181]  ret_from_fork_asm+0x11/0x20
[   40.815239]  </TASK>
[   40.815284] ---[ end trace 0000000000000000 ]---