[    3.619815] ------------[ cut here ]------------
[    3.619876] refcount_t: underflow; use-after-free.
[    3.619933] WARNING: CPU: 1 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    3.620012] Modules linked in: nf_conntrack_netlink tcp_diag inet_diag nf_conntrack_ftp nft_ct nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables veth
[    3.620140] CPU: 1 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    3.620223] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    3.620278] Workqueue: netns cleanup_net
[    3.620320] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    3.620370] Code: b8 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 b8 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
[    3.620522] RSP: 0018:ffffa40cc0257d50 EFLAGS: 00010286
[    3.620572] RAX: 0000000000000000 RBX: ffffa40cc0257d60 RCX: 00000000ffffdfff
[    3.620638] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    3.620705] RBP: ffffa40cc0257868 R08: ffffffffb8f56d28 R09: 00000000ffffdfff
[    3.620781] R10: ffffffffb8e76d40 R11: ffffffffb8f26d40 R12: dead000000000122
[    3.620848] R13: 00000000fffb79bb R14: 0000000000000001 R15: ffff95480318c000
[    3.620915] FS:  0000000000000000(0000) GS:ffff954885658000(0000) knlGS:0000000000000000
[    3.620988] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    3.621046] CR2: 00007f4b7d905760 CR3: 000000002f441004 CR4: 0000000000772ef0
[    3.621113] PKRU: 55555554
[    3.621134] Call Trace:
[    3.621157]  <TASK>
[    3.621214]  netdev_run_todo+0x21a/0x550
[    3.621255]  ops_undo_list+0x1e3/0x1f0
[    3.621293]  cleanup_net+0x1b7/0x2b0
[    3.621327]  process_one_work+0x162/0x380
[    3.621366]  worker_thread+0x299/0x3c0
[    3.621405]  ? rescuer_thread+0x4c0/0x4c0
[    3.621445]  kthread+0x101/0x1f0
[    3.621485]  ? kthreads_online_cpu+0x110/0x110
[    3.621536]  ? kthreads_online_cpu+0x110/0x110
[    3.621581]  ret_from_fork+0x11c/0x140
[    3.621620]  ? kthreads_online_cpu+0x110/0x110
[    3.621671]  ret_from_fork_asm+0x11/0x20
[    3.621712]  </TASK>
[    3.621732] ---[ end trace 0000000000000000 ]---