[    2.608132] ip (258) used greatest stack depth: 12296 bytes left
[    3.640301] ------------[ cut here ]------------
[    3.640384] refcount_t: underflow; use-after-free.
[    3.640472] WARNING: CPU: 0 PID: 68 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    3.640570] Modules linked in: nft_masq nft_chain_nat nf_nat nf_conntrack_netlink nft_ct nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables tcp_diag inet_diag veth
[    3.640743] CPU: 0 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    3.640840] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    3.640910] Workqueue: netns cleanup_net
[    3.640957] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    3.641014] Code: b2 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 b2 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
[    3.641215] RSP: 0000:ffffae75c025fd50 EFLAGS: 00010286
[    3.641275] RAX: 0000000000000000 RBX: ffffae75c025fd60 RCX: 00000000ffffdfff
[    3.641363] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    3.641447] RBP: ffffae75c025f868 R08: ffffffffb2b56d28 R09: 00000000ffffdfff
[    3.641538] R10: ffffffffb2a76d40 R11: ffffffffb2b26d40 R12: dead000000000122
[    3.641623] R13: 00000000fffb79d8 R14: 0000000000000001 R15: ffff8eff4112d000
[    3.641707] FS:  0000000000000000(0000) GS:ffff8effcb9d8000(0000) knlGS:0000000000000000
[    3.641796] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    3.641869] CR2: 00007f6caa29cb80 CR3: 0000000009893006 CR4: 0000000000772ef0
[    3.641953] PKRU: 55555554
[    3.641979] Call Trace:
[    3.642007]  <TASK>
[    3.642034]  netdev_run_todo+0x21a/0x550
[    3.642089]  ops_undo_list+0x1e3/0x1f0
[    3.642135]  cleanup_net+0x1b7/0x2b0
[    3.642177]  process_one_work+0x162/0x380
[    3.642233]  worker_thread+0x299/0x3c0
[    3.642288]  ? rescuer_thread+0x4c0/0x4c0
[    3.642338]  kthread+0x101/0x1f0
[    3.642387]  ? kthreads_online_cpu+0x110/0x110
[    3.642448]  ? kthreads_online_cpu+0x110/0x110
[    3.642504]  ret_from_fork+0x11c/0x140
[    3.642554]  ? kthreads_online_cpu+0x110/0x110
[    3.642610]  ret_from_fork_asm+0x11/0x20
[    3.642658]  </TASK>
[    3.642686] ---[ end trace 0000000000000000 ]---