[    2.426621] ip (241) used greatest stack depth: 12136 bytes left
[    3.535364] ------------[ cut here ]------------
[    3.535449] refcount_t: underflow; use-after-free.
[    3.535528] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    3.535630] Modules linked in: nf_tables
[    3.535679] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    3.535772] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    3.535837] Workqueue: netns cleanup_net
[    3.535884] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    3.535942] Code: b8 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 11 b8 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
[    3.536131] RSP: 0018:ffffab7680257d50 EFLAGS: 00010286
[    3.536191] RAX: 0000000000000000 RBX: ffffab7680257d60 RCX: 00000000ffffdfff
[    3.536269] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    3.536347] RBP: ffffab7680257868 R08: ffffffffb8556d28 R09: 00000000ffffdfff
[    3.536432] R10: ffffffffb8476d40 R11: ffffffffb8526d40 R12: dead000000000122
[    3.536511] R13: 00000000fffb7950 R14: 0000000000000001 R15: ffff9dfac32c1000
[    3.536596] FS:  0000000000000000(0000) GS:ffff9dfb45fd8000(0000) knlGS:0000000000000000
[    3.536683] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    3.536753] CR2: 00007f3806aca4d8 CR3: 0000000038841001 CR4: 0000000000772ef0
[    3.536845] PKRU: 55555554
[    3.536875] Call Trace:
[    3.536905]  <TASK>
[    3.536942]  netdev_run_todo+0x21a/0x550
[    3.536993]  ops_undo_list+0x1e3/0x1f0
[    3.537044]  cleanup_net+0x1b7/0x2b0
[    3.537090]  process_one_work+0x162/0x380
[    3.537146]  worker_thread+0x299/0x3c0
[    3.537358]  ? rescuer_thread+0x4c0/0x4c0
[    3.537529]  kthread+0x101/0x1f0
[    3.537584]  ? kthreads_online_cpu+0x110/0x110
[    3.537644]  ? kthreads_online_cpu+0x110/0x110
[    3.537695]  ret_from_fork+0x11c/0x140
[    3.537741]  ? kthreads_online_cpu+0x110/0x110
[    3.537800]  ret_from_fork_asm+0x11/0x20
[    3.537847]  </TASK>
[    3.537872] ---[ end trace 0000000000000000 ]---