[    6.301898] ------------[ cut here ]------------
[    6.301988] refcount_t: underflow; use-after-free.
[    6.302042] WARNING: CPU: 3 PID: 808 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    6.302117] Modules linked in:
[    6.302155] CPU: 3 UID: 0 PID: 808 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    6.302221] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    6.302262] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    6.302313] Code: 86 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 d5 86 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
[    6.302488] RSP: 0018:ffffb50940fd7730 EFLAGS: 00010282
[    6.302540] RAX: 0000000000000000 RBX: ffffb50940fd7740 RCX: 00000000ffffdfff
[    6.302622] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    6.302680] RBP: ffffb50940fd7238 R08: ffffffff8755ba28 R09: 00000000ffffdfff
[    6.302736] R10: ffffffff8747ba40 R11: ffffffff8752ba40 R12: dead000000000122
[    6.302787] R13: 00000000fffb8427 R14: 0000000000000001 R15: ffff9c4d01133000
[    6.302839] FS:  00007f4c2c6f8800(0000) GS:ffff9c4db7111000(0000) knlGS:0000000000000000
[    6.302897] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    6.302943] CR2: 00000000004e5ae0 CR3: 0000000007fa5004 CR4: 0000000000772ef0
[    6.302993] PKRU: 55555554
[    6.303014] Call Trace:
[    6.303033]  <TASK>
[    6.303054]  netdev_run_todo+0x21a/0x550
[    6.303088]  rtnl_dellink+0x15b/0x350
[    6.303125]  ? virtio_fs_enqueue_req+0x352/0x570
[    6.303167]  ? netdev_run_todo+0x63/0x550
[    6.303197]  ? rtnl_bridge_getlink+0x1a0/0x1a0
[    6.303236]  rtnetlink_rcv_msg+0x358/0x400
[    6.303270]  ? get_page_from_freelist+0x15b4/0x1770
[    6.303316]  ? rtnl_calcit.isra.0+0x110/0x110
[    6.303356]  netlink_rcv_skb+0x57/0x100
[    6.303391]  netlink_unicast+0x252/0x380
[    6.303420]  ? __alloc_skb+0xdb/0x190
[    6.303452]  netlink_sendmsg+0x1be/0x3e0
[    6.303483]  ____sys_sendmsg+0x132/0x260
[    6.303519]  ? copy_msghdr_from_user+0x6c/0xa0
[    6.303559]  ___sys_sendmsg+0x87/0xd0
[    6.303585]  ? do_wp_page+0x369/0xe90
[    6.303615]  ? ___pte_offset_map+0x1b/0xd0
[    6.303646]  ? nfulnl_rcv_nl_event+0x36/0xa0
[    6.303689]  ? fsnotify_grab_connector+0x48/0x80
[    6.303731]  ? fsnotify_destroy_marks+0x29/0x150
[    6.303765]  __sys_sendmsg+0x71/0xd0
[    6.303792]  do_syscall_64+0xa4/0xfd0
[    6.303827]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    6.303871] RIP: 0033:0x7f4c2c8c61d7
[    6.303911] 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
[    6.304034] RSP: 002b:00007fff9be3e048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[    6.304091] RAX: ffffffffffffffda RBX: 00007fff9be3e780 RCX: 00007f4c2c8c61d7
[    6.304141] RDX: 0000000000000000 RSI: 00007fff9be3e0b0 RDI: 0000000000000005
[    6.304191] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[    6.304240] R10: 00007f4c2c7c2510 R11: 0000000000000246 R12: 0000000000000002
[    6.304309] R13: 00000000690de9b4 R14: 0000000000499600 R15: 0000000000000000
[    6.304358]  </TASK>
[    6.304373] ---[ end trace 0000000000000000 ]---
[    6.305117] ip (808) used greatest stack depth: 11744 bytes left