[    2.230535] ip (248) used greatest stack depth: 12344 bytes left
[   19.114431] Initializing XFRM netlink socket
[   24.302910] ------------[ cut here ]------------
[   24.303079] refcount_t: underflow; use-after-free.
[   24.303152] WARNING: CPU: 2 PID: 435 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[   24.303231] Modules linked in: xfrm_user vrf veth
[   24.303312] CPU: 2 UID: 0 PID: 435 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[   24.303425] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.303503] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[   24.303597] Code: a7 e8 18 df ba ff 90 0f 0b 90 90 c3 80 3d f9 da eb 00 00 75 89 c6 05 f0 da eb 00 01 90 48 c7 c7 28 e0 b1 a7 e8 f5 de ba ff 90 <0f> 0b 90 90 c3 80 3d d4 da eb 00 00 0f 85 62 ff ff ff c6 05 c7 da
[   24.303781] RSP: 0018:ffffb95d402f3730 EFLAGS: 00010282
[   24.303841] RAX: 0000000000000000 RBX: ffffb95d402f3740 RCX: 00000000ffffdfff
[   24.303920] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   24.304000] RBP: ffffb95d402f3248 R08: ffffffffa7f56a28 R09: 00000000ffffdfff
[   24.304074] R10: ffffffffa7e76a40 R11: ffffffffa7f26a40 R12: dead000000000122
[   24.304170] R13: 00000000fffbca8f R14: 0000000000000001 R15: ffff9b2184e94000
[   24.304244] FS:  00007f444e6d4800(0000) GS:ffff9b22166d9000(0000) knlGS:0000000000000000
[   24.304316] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.304386] CR2: 00000000004e73c8 CR3: 0000000002f92001 CR4: 0000000000772ef0
[   24.304465] PKRU: 55555554
[   24.304509] Call Trace:
[   24.304557]  <TASK>
[   24.304596]  netdev_run_todo+0x21a/0x550
[   24.304681]  rtnl_dellink+0x15b/0x350
[   24.304746]  ? virtio_fs_enqueue_req+0x352/0x570
[   24.304822]  ? netdev_run_todo+0x63/0x550
[   24.304881]  ? rtnl_bridge_getlink+0x1a0/0x1a0
[   24.304949]  rtnetlink_rcv_msg+0x358/0x400
[   24.304999]  ? get_page_from_freelist+0x15b4/0x1770
[   24.305059]  ? rtnl_calcit.isra.0+0x110/0x110
[   24.305117]  netlink_rcv_skb+0x57/0x100
[   24.305193]  netlink_unicast+0x252/0x380
[   24.305242]  ? __alloc_skb+0xdb/0x190
[   24.305292]  netlink_sendmsg+0x1be/0x3e0
[   24.305341]  ____sys_sendmsg+0x132/0x260
[   24.305393]  ? copy_msghdr_from_user+0x6c/0xa0
[   24.305455]  ___sys_sendmsg+0x87/0xd0
[   24.305508]  ? do_wp_page+0x369/0xe90
[   24.305562]  ? nfulnl_rcv_nl_event+0x36/0xa0
[   24.305626]  ? fsnotify_grab_connector+0x48/0x80
[   24.305688]  ? fsnotify_destroy_marks+0x29/0x150
[   24.305746]  __sys_sendmsg+0x71/0xd0
[   24.305795]  do_syscall_64+0xa4/0xfd0
[   24.305847]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   24.305926] RIP: 0033:0x7f444e8a21d7
[   24.305986] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
[   24.306132] RSP: 002b:00007ffd97439638 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.306204] RAX: ffffffffffffffda RBX: 00007ffd97439d60 RCX: 00007f444e8a21d7
[   24.306274] RDX: 0000000000000000 RSI: 00007ffd974396a0 RDI: 0000000000000005
[   24.306345] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[   24.306428] R10: 00007f444e79ef60 R11: 0000000000000246 R12: 0000000000000002
[   24.306499] R13: 00000000690de716 R14: 0000000000499600 R15: 0000000000000000
[   24.306578]  </TASK>
[   24.306617] ---[ end trace 0000000000000000 ]---
[   24.307292] ip (435) used greatest stack depth: 11744 bytes left