[    1.681239] ------------[ cut here ]------------
[    1.681329] refcount_t: underflow; use-after-free.
[    1.681395] WARNING: CPU: 0 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    1.681488] Modules linked in: veth
[    1.681536] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    1.681633] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    1.681704] Workqueue: netns cleanup_net
[    1.681750] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    1.681803] Code: b9 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 d1 b9 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
[    1.681993] RSP: 0018:ffffb2c08024fd50 EFLAGS: 00010286
[    1.682052] RAX: 0000000000000000 RBX: ffffb2c08024fd60 RCX: 00000000ffffdfff
[    1.682130] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    1.682206] RBP: ffffb2c08024f880 R08: ffffffffba156a28 R09: 00000000ffffdfff
[    1.682288] R10: ffffffffba076a40 R11: ffffffffba126a40 R12: dead000000000122
[    1.682371] R13: 00000000fffb722c R14: 0000000000000001 R15: ffff98508112b000
[    1.682451] FS:  0000000000000000(0000) GS:ffff9851043e2000(0000) knlGS:0000000000000000
[    1.682535] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    1.682605] CR2: 00007f52089dc000 CR3: 0000000005a6f006 CR4: 0000000000772ef0
[    1.682690] PKRU: 55555554
[    1.682721] Call Trace:
[    1.682749]  <TASK>
[    1.682780]  netdev_run_todo+0x21a/0x550
[    1.682824]  ops_undo_list+0x1e3/0x1f0
[    1.682870]  cleanup_net+0x1b7/0x2b0
[    1.682916]  process_one_work+0x162/0x380
[    1.682970]  worker_thread+0x299/0x3c0
[    1.683017]  ? rescuer_thread+0x4c0/0x4c0
[    1.683064]  kthread+0x101/0x1f0
[    1.683111]  ? kthreads_online_cpu+0x110/0x110
[    1.683162]  ? kthreads_online_cpu+0x110/0x110
[    1.683229]  ret_from_fork+0x11c/0x140
[    1.683278]  ? kthreads_online_cpu+0x110/0x110
[    1.683337]  ret_from_fork_asm+0x11/0x20
[    1.683387]  </TASK>
[    1.683418] ---[ end trace 0000000000000000 ]---
[   12.510155] bench-lookups_i (224) used greatest stack depth: 12488 bytes left