[    6.937269] ------------[ cut here ]------------
[    6.937356] refcount_t: underflow; use-after-free.
[    6.937428] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    6.937531] Modules linked in: nf_conntrack_netlink nft_masq nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables
[    6.937659] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    6.937750] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    6.937811] Workqueue: netns cleanup_net
[    6.937850] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    6.937897] Code: 9b 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 31 9b 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
[    6.938076] RSP: 0018:ffffb15a40257d50 EFLAGS: 00010286
[    6.938123] RAX: 0000000000000000 RBX: ffffb15a40257d60 RCX: 00000000ffffdfff
[    6.938191] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    6.938269] RBP: ffffb15a40257868 R08: ffffffff9b756d28 R09: 00000000ffffdfff
[    6.938335] R10: ffffffff9b676d40 R11: ffffffff9b726d40 R12: dead000000000122
[    6.938396] R13: 00000000fffb86a5 R14: 0000000000000001 R15: ffff98fa83821000
[    6.938465] FS:  0000000000000000(0000) GS:ffff98fb22dd8000(0000) knlGS:0000000000000000
[    6.938532] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    6.938604] CR2: 000055b75e662dec CR3: 000000000398c006 CR4: 0000000000772ef0
[    6.938689] PKRU: 55555554
[    6.938718] Call Trace:
[    6.938752]  <TASK>
[    6.938776]  netdev_run_todo+0x21a/0x550
[    6.938820]  ops_undo_list+0x1e3/0x1f0
[    6.938864]  cleanup_net+0x1b7/0x2b0
[    6.938900]  process_one_work+0x162/0x380
[    6.938947]  worker_thread+0x299/0x3c0
[    6.938992]  ? rescuer_thread+0x4c0/0x4c0
[    6.939035]  kthread+0x101/0x1f0
[    6.939098]  ? kthreads_online_cpu+0x110/0x110
[    6.939145]  ? kthreads_online_cpu+0x110/0x110
[    6.939193]  ret_from_fork+0x11c/0x140
[    6.939249]  ? kthreads_online_cpu+0x110/0x110
[    6.939297]  ret_from_fork_asm+0x11/0x20
[    6.939340]  </TASK>
[    6.939365] ---[ end trace 0000000000000000 ]---