[    6.915859] ------------[ cut here ]------------
[    6.915933] refcount_t: underflow; use-after-free.
[    6.916008] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    6.916091] Modules linked in: nf_conntrack_netlink nft_masq nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables
[    6.916194] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    6.916276] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    6.916329] Workqueue: netns cleanup_net
[    6.916375] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    6.916426] Code: a8 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 d1 a8 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
[    6.916566] RSP: 0018:ffffb86c80257d50 EFLAGS: 00010286
[    6.916618] RAX: 0000000000000000 RBX: ffffb86c80257d60 RCX: 00000000ffffdfff
[    6.916685] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    6.916757] RBP: ffffb86c80257868 R08: ffffffffa9156d28 R09: 00000000ffffdfff
[    6.916831] R10: ffffffffa9076d40 R11: ffffffffa9126d40 R12: dead000000000122
[    6.916895] R13: 00000000fffb869a R14: 0000000000000001 R15: ffff9869c5174000
[    6.916961] FS:  0000000000000000(0000) GS:ffff986a553d8000(0000) knlGS:0000000000000000
[    6.917025] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    6.917083] CR2: 0000562fd1411dec CR3: 000000000318d002 CR4: 0000000000772ef0
[    6.917136] PKRU: 55555554
[    6.917165] Call Trace:
[    6.917186]  <TASK>
[    6.917208]  netdev_run_todo+0x21a/0x550
[    6.917250]  ops_undo_list+0x1e3/0x1f0
[    6.917289]  cleanup_net+0x1b7/0x2b0
[    6.917328]  process_one_work+0x162/0x380
[    6.917374]  worker_thread+0x299/0x3c0
[    6.917418]  ? rescuer_thread+0x4c0/0x4c0
[    6.917453]  kthread+0x101/0x1f0
[    6.917488]  ? kthreads_online_cpu+0x110/0x110
[    6.917526]  ? kthreads_online_cpu+0x110/0x110
[    6.917567]  ret_from_fork+0x11c/0x140
[    6.917614]  ? kthreads_online_cpu+0x110/0x110
[    6.917657]  ret_from_fork_asm+0x11/0x20
[    6.917694]  </TASK>
[    6.917737] ---[ end trace 0000000000000000 ]---