[    2.232019] eth0: renamed from r1h0
[    2.300016] eth1: renamed from r1h1
[    2.369041] eth2: renamed from r1h2
[    2.441011] eth3: renamed from r1h3
[    5.363924] ------------[ cut here ]------------
[    5.363985] refcount_t: underflow; use-after-free.
[    5.364034] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    5.364098] Modules linked in:
[    5.364129] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    5.364192] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    5.364235] Workqueue: netns cleanup_net
[    5.364267] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    5.364307] Code: ae 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 95 ae 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
[    5.364431] RSP: 0018:ffffadac00067d50 EFLAGS: 00010286
[    5.364472] RAX: 0000000000000000 RBX: ffffadac00067d60 RCX: 00000000ffffdfff
[    5.364530] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    5.364590] RBP: ffffadac00067858 R08: ffffffffaf15ba28 R09: 00000000ffffdfff
[    5.364640] R10: ffffffffaf07ba40 R11: ffffffffaf12ba40 R12: dead000000000122
[    5.364691] R13: 00000000fffb8096 R14: 0000000000000001 R15: ffff97fe4515a000
[    5.364742] FS:  0000000000000000(0000) GS:ffff97fecf391000(0000) knlGS:0000000000000000
[    5.364798] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    5.364839] CR2: 00007f6647491000 CR3: 000000002c246006 CR4: 0000000000772ef0
[    5.364902] PKRU: 55555554
[    5.364924] Call Trace:
[    5.364941]  <TASK>
[    5.364956]  netdev_run_todo+0x21a/0x550
[    5.364983]  ops_undo_list+0x1e3/0x1f0
[    5.365013]  cleanup_net+0x1b7/0x300
[    5.365044]  process_one_work+0x162/0x380
[    5.365078]  worker_thread+0x299/0x3c0
[    5.365110]  ? rescuer_thread+0x4c0/0x4c0
[    5.365141]  kthread+0x101/0x1f0
[    5.365172]  ? kthreads_online_cpu+0x110/0x110
[    5.365211]  ? kthreads_online_cpu+0x110/0x110
[    5.365245]  ret_from_fork+0x11c/0x140
[    5.365277]  ? kthreads_online_cpu+0x110/0x110
[    5.365317]  ret_from_fork_asm+0x11/0x20
[    5.365354]  </TASK>
[    5.365376] ---[ end trace 0000000000000000 ]---