[    2.723356] xdummy0: entered promiscuous mode
[    2.727657] xdummy0: left promiscuous mode
[    2.735080] ------------[ cut here ]------------
[    2.735177] refcount_t: underflow; use-after-free.
[    2.735235] WARNING: CPU: 1 PID: 313 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    2.735307] Modules linked in:
[    2.735340] CPU: 1 UID: 0 PID: 313 Comm: tap Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    2.735405] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.735453] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    2.735495] Code: a9 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 55 a9 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
[    2.735634] RSP: 0018:ffffb4fac0677868 EFLAGS: 00010286
[    2.735675] RAX: 0000000000000000 RBX: ffffb4fac0677878 RCX: 00000000ffffdfff
[    2.735730] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    2.735780] RBP: ffffb4fac0677370 R08: ffffffffa9d5ba28 R09: 00000000ffffdfff
[    2.735841] R10: ffffffffa9c7ba40 R11: ffffffffa9d2ba40 R12: dead000000000122
[    2.735896] R13: 00000000fffb764e R14: 0000000000000001 R15: ffffa03bc1c02000
[    2.735954] FS:  00007f2c1f2a8b80(0000) GS:ffffa03c54811000(0000) knlGS:0000000000000000
[    2.736013] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.736075] CR2: 00007f0e32bdfd20 CR3: 00000000046a4005 CR4: 0000000000772ef0
[    2.736135] PKRU: 55555554
[    2.736156] Call Trace:
[    2.736180]  <TASK>
[    2.736201]  netdev_run_todo+0x21a/0x550
[    2.736245]  rtnl_dellink+0x15b/0x350
[    2.736288]  ? get_page_from_freelist+0x15b4/0x1770
[    2.736331]  ? rtnl_bridge_getlink+0x1a0/0x1a0
[    2.736371]  rtnetlink_rcv_msg+0x358/0x400
[    2.736402]  ? free_percpu+0x126/0x290
[    2.736440]  ? rtnl_calcit.isra.0+0x110/0x110
[    2.736479]  netlink_rcv_skb+0x57/0x100
[    2.736518]  netlink_unicast+0x252/0x380
[    2.736560]  ? __alloc_skb+0xdb/0x190
[    2.736595]  netlink_sendmsg+0x1be/0x3e0
[    2.736634]  __sys_sendto+0x12a/0x1b0
[    2.736673]  ? alloc_file_pseudo+0xae/0x110
[    2.736708]  ? sock_alloc_file+0x63/0xc0
[    2.736742]  ? __sys_socket+0xca/0x110
[    2.736773]  __x64_sys_sendto+0x24/0x30
[    2.736809]  do_syscall_64+0xa4/0xfd0
[    2.736853]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.736896] RIP: 0033:0x7f2c1f3bb120
[    2.736929] Code: Unable to access opcode bytes at 0x7f2c1f3bb0f6.
[    2.736976] RSP: 002b:00007ffcac1c6b58 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[    2.737047] RAX: ffffffffffffffda RBX: 0000000000000030 RCX: 00007f2c1f3bb120
[    2.737103] RDX: 0000000000000030 RSI: 00007ffcac1c6b60 RDI: 0000000000000005
[    2.737154] RBP: 00000000004047d0 R08: 0000000000000000 R09: 0000000000000000
[    2.737204] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
[    2.737271] R13: 00007ffcac1c6b60 R14: 00007f2c1f2a7000 R15: 0000000000407160
[    2.737330]  </TASK>
[    2.737351] ---[ end trace 0000000000000000 ]---
[    2.743414] tap (313) used greatest stack depth: 12048 bytes left
[    2.744907] xdummy0: entered promiscuous mode
[    2.751165] xdummy0: left promiscuous mode
[    2.765804] xdummy0: entered promiscuous mode
[    2.771342] xdummy0: left promiscuous mode