[ 2.424174] 8021q: 802.1Q VLAN Support v1.8 [ 13.752819] ------------[ cut here ]------------ [ 13.752934] refcount_t: underflow; use-after-free. [ 13.753005] WARNING: CPU: 0 PID: 507 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 13.753095] Modules linked in: 8021q vrf veth [ 13.753156] CPU: 0 UID: 0 PID: 507 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 13.753249] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.753313] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 13.753362] Code: a2 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 51 a2 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 [ 13.753544] RSP: 0018:ffffae77c0867730 EFLAGS: 00010282 [ 13.753594] RAX: 0000000000000000 RBX: ffffae77c0867740 RCX: 00000000ffffdfff [ 13.753672] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 13.753753] RBP: ffffae77c0867248 R08: ffffffffa2956a28 R09: 00000000ffffdfff [ 13.753830] R10: ffffffffa2876a40 R11: ffffffffa2926a40 R12: dead000000000122 [ 13.753913] R13: 00000000fffba13a R14: 0000000000000001 R15: ffff97e2c30fa000 [ 13.753992] FS: 00007f2557bdc800(0000) GS:ffff97e35bbd9000(0000) knlGS:0000000000000000 [ 13.754075] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 13.754145] CR2: 00000000004e73b8 CR3: 0000000006c33001 CR4: 0000000000772ef0 [ 13.754225] PKRU: 55555554 [ 13.754257] Call Trace: [ 13.754283] [ 13.754308] netdev_run_todo+0x21a/0x550 [ 13.754354] rtnl_dellink+0x15b/0x350 [ 13.754402] ? virtio_fs_enqueue_req+0x352/0x570 [ 13.754465] ? netdev_run_todo+0x63/0x550 [ 13.754504] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 13.754562] rtnetlink_rcv_msg+0x358/0x400 [ 13.754601] ? get_page_from_freelist+0x15b4/0x1770 [ 13.754661] ? rtnl_calcit.isra.0+0x110/0x110 [ 13.754720] netlink_rcv_skb+0x57/0x100 [ 13.754772] netlink_unicast+0x252/0x380 [ 13.754823] ? __alloc_skb+0xdb/0x190 [ 13.754869] netlink_sendmsg+0x1be/0x3e0 [ 13.754907] ____sys_sendmsg+0x132/0x260 [ 13.754952] ? copy_msghdr_from_user+0x6c/0xa0 [ 13.755004] ___sys_sendmsg+0x87/0xd0 [ 13.755044] ? do_wp_page+0x369/0xe90 [ 13.755091] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 13.755148] ? fsnotify_grab_connector+0x48/0x80 [ 13.755207] ? fsnotify_destroy_marks+0x29/0x150 [ 13.755252] __sys_sendmsg+0x71/0xd0 [ 13.755285] do_syscall_64+0xa4/0xfd0 [ 13.755342] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.755401] RIP: 0033:0x7f2557daa1d7 [ 13.755439] 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 [ 13.755618] RSP: 002b:00007fffff748ce8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 13.755694] RAX: ffffffffffffffda RBX: 00007fffff749410 RCX: 00007f2557daa1d7 [ 13.755772] RDX: 0000000000000000 RSI: 00007fffff748d50 RDI: 0000000000000005 [ 13.755857] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 13.755934] R10: 00007f2557ca6f60 R11: 0000000000000246 R12: 0000000000000002 [ 13.756011] R13: 00000000690de80c R14: 0000000000499600 R15: 0000000000000000 [ 13.756089] [ 13.756114] ---[ end trace 0000000000000000 ]--- [ 13.756645] ip (507) used greatest stack depth: 11744 bytes left