[    1.938159] ip (254) used greatest stack depth: 12136 bytes left
[    2.000288] ip_local_port_range: prefer different parity for start/end values.
[    2.028717] ------------[ cut here ]------------
[    2.028770] refcount_t: underflow; use-after-free.
[    2.028827] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    2.028899] Modules linked in:
[    2.028939] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    2.029004] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.029047] Workqueue: netns cleanup_net
[    2.029084] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    2.029131] Code: 95 e8 e8 54 ba ff 90 0f 0b 90 90 c3 80 3d 00 e6 2b 01 00 75 89 c6 05 f7 e5 2b 01 01 90 48 c7 c7 f8 48 35 95 e8 c5 54 ba ff 90 <0f> 0b 90 90 c3 80 3d db e5 2b 01 00 0f 85 62 ff ff ff c6 05 ce e5
[    2.029251] RSP: 0018:ffffb37880067d50 EFLAGS: 00010286
[    2.029285] RAX: 0000000000000000 RBX: ffffb37880067d60 RCX: 00000000ffffdfff
[    2.029337] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    2.029390] RBP: ffffb37880067858 R08: ffffffff95b5ba28 R09: 00000000ffffdfff
[    2.029447] R10: ffffffff95a7ba40 R11: ffffffff95b2ba40 R12: dead000000000122
[    2.029498] R13: 00000000fffb7379 R14: 0000000000000001 R15: ffff9d3e44f7a000
[    2.029559] FS:  0000000000000000(0000) GS:ffff9d3ee8991000(0000) knlGS:0000000000000000
[    2.029621] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.029678] CR2: 00007f6378123050 CR3: 0000000004e2c005 CR4: 0000000000772ef0
[    2.029737] PKRU: 55555554
[    2.029755] Call Trace:
[    2.029772]  <TASK>
[    2.029804]  netdev_run_todo+0x21a/0x550
[    2.029842]  ops_undo_list+0x1e3/0x1f0
[    2.029873]  cleanup_net+0x1b7/0x300
[    2.029904]  process_one_work+0x162/0x380
[    2.029941]  worker_thread+0x299/0x3c0
[    2.029972]  ? rescuer_thread+0x4c0/0x4c0
[    2.030005]  kthread+0x101/0x1f0
[    2.030038]  ? kthreads_online_cpu+0x110/0x110
[    2.030078]  ? kthreads_online_cpu+0x110/0x110
[    2.030124]  ret_from_fork+0x11c/0x140
[    2.030164]  ? kthreads_online_cpu+0x110/0x110
[    2.030204]  ret_from_fork_asm+0x11/0x20
[    2.030243]  </TASK>
[    2.030264] ---[ end trace 0000000000000000 ]---
[    2.085632] ip_local_port_range: prefer different parity for start/end values.
[    2.164609] ip_local_port_range: prefer different parity for start/end values.
[    2.247971] ip_local_port_range: prefer different parity for start/end values.