[    1.857055] ------------[ cut here ]------------
[    1.857127] refcount_t: underflow; use-after-free.
[    1.857192] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    1.857292] Modules linked in: veth
[    1.857327] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    1.857418] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    1.857467] Workqueue: netns cleanup_net
[    1.857506] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    1.857545] Code: 91 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 91 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
[    1.857669] RSP: 0018:ffffb2f700257d50 EFLAGS: 00010286
[    1.857709] RAX: 0000000000000000 RBX: ffffb2f700257d60 RCX: 00000000ffffdfff
[    1.857770] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    1.857827] RBP: ffffb2f700257880 R08: ffffffff91956a28 R09: 00000000ffffdfff
[    1.857877] R10: ffffffff91876a40 R11: ffffffff91926a40 R12: dead000000000122
[    1.857927] R13: 00000000fffb72de R14: 0000000000000001 R15: ffff9f0bc4ee4000
[    1.857984] FS:  0000000000000000(0000) GS:ffff9f0c6cbe2000(0000) knlGS:0000000000000000
[    1.858059] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    1.858114] CR2: 000000000aff4688 CR3: 0000000004dae003 CR4: 0000000000772ef0
[    1.858173] PKRU: 55555554
[    1.858194] Call Trace:
[    1.858219]  <TASK>
[    1.858250]  netdev_run_todo+0x21a/0x550
[    1.858292]  ops_undo_list+0x1e3/0x1f0
[    1.858327]  cleanup_net+0x1b7/0x2b0
[    1.858357]  process_one_work+0x162/0x380
[    1.858420]  worker_thread+0x299/0x3c0
[    1.861751]  ? rescuer_thread+0x4c0/0x4c0
[    1.861813]  kthread+0x101/0x1f0
[    1.861845]  ? kthreads_online_cpu+0x110/0x110
[    1.861886]  ? kthreads_online_cpu+0x110/0x110
[    1.861922]  ret_from_fork+0x11c/0x140
[    1.861968]  ? kthreads_online_cpu+0x110/0x110
[    1.862019]  ret_from_fork_asm+0x11/0x20
[    1.862058]  </TASK>
[    1.862082] ---[ end trace 0000000000000000 ]---
[   12.669362] bench-lookups_i (227) used greatest stack depth: 12488 bytes left