[    1.669398] ------------[ cut here ]------------
[    1.669471] refcount_t: underflow; use-after-free.
[    1.669546] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    1.669618] Modules linked in: veth
[    1.669654] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    1.669725] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    1.669778] Workqueue: netns cleanup_net
[    1.669824] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    1.669864] Code: aa e8 f8 c3 ba ff 90 0f 0b 90 90 c3 80 3d 39 c1 eb 00 00 75 89 c6 05 30 c1 eb 00 01 90 48 c7 c7 30 a0 51 aa e8 d5 c3 ba ff 90 <0f> 0b 90 90 c3 80 3d 14 c1 eb 00 00 0f 85 62 ff ff ff c6 05 07 c1
[    1.670013] RSP: 0018:ffffb6a840067d50 EFLAGS: 00010286
[    1.670060] RAX: 0000000000000000 RBX: ffffb6a840067d60 RCX: 00000000ffffdfff
[    1.670125] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    1.670188] RBP: ffffb6a840067880 R08: ffffffffaa956a28 R09: 00000000ffffdfff
[    1.670250] R10: ffffffffaa876a40 R11: ffffffffaa926a40 R12: dead000000000122
[    1.670310] R13: 00000000fffb7228 R14: 0000000000000001 R15: ffff988fc51a4000
[    1.670379] FS:  0000000000000000(0000) GS:ffff989053be2000(0000) knlGS:0000000000000000
[    1.670445] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    1.670497] CR2: 00007f57f8cab000 CR3: 0000000003347001 CR4: 0000000000772ef0
[    1.670553] PKRU: 55555554
[    1.670578] Call Trace:
[    1.670609]  <TASK>
[    1.670632]  netdev_run_todo+0x21a/0x550
[    1.670674]  ops_undo_list+0x1e3/0x1f0
[    1.670716]  cleanup_net+0x1b7/0x2b0
[    1.670749]  process_one_work+0x162/0x380
[    1.670790]  worker_thread+0x299/0x3c0
[    1.670827]  ? rescuer_thread+0x4c0/0x4c0
[    1.670860]  kthread+0x101/0x1f0
[    1.670902]  ? kthreads_online_cpu+0x110/0x110
[    1.670941]  ? kthreads_online_cpu+0x110/0x110
[    1.670995]  ret_from_fork+0x11c/0x140
[    1.671042]  ? kthreads_online_cpu+0x110/0x110
[    1.671083]  ret_from_fork_asm+0x11/0x20
[    1.671123]  </TASK>
[    1.671147] ---[ end trace 0000000000000000 ]---
[    1.717930] TCP: TCP-AO: the keyid 100 from SYN packet is not present - not sending SYNACK
[    2.782433] TCP: TCP-AO: the keyid 100 from SYN packet is not present - not sending SYNACK
[    2.782608] TCP: TCP-AO: the keyid 100 from SYN packet is not present - not sending SYNACK
[    3.806400] TCP: TCP-AO: the keyid 100 from SYN packet is not present - not sending SYNACK
[    3.806582] TCP: TCP-AO: the keyid 100 from SYN packet is not present - not sending SYNACK
[    4.830399] TCP: TCP-AO: the keyid 100 from SYN packet is not present - not sending SYNACK
[    4.830544] TCP: TCP-AO: the keyid 100 from SYN packet is not present - not sending SYNACK
[    5.854403] TCP: TCP-AO: the keyid 100 from SYN packet is not present - not sending SYNACK
[    5.854582] TCP: TCP-AO: the keyid 100 from SYN packet is not present - not sending SYNACK
[    6.877407] TCP: TCP-AO: the keyid 100 from SYN packet is not present - not sending SYNACK
[    6.877610] TCP: TCP-AO: the keyid 100 from SYN packet is not present - not sending SYNACK
[    7.901399] TCP: TCP-AO: the keyid 100 from SYN packet is not present - not sending SYNACK
[    8.436703] connect-deny_ip (224) used greatest stack depth: 12488 bytes left