net: bridge: fix a possible memory leak in __vlan_add
After per-port vlan stats, vlan stats should be released
when fail to add vlan
Fixes: 9163a0fc1f0c0 ("net: bridge: add support for per-port vlan stats")
CC: bridge@lists.linux-foundation.org
cc: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
CC: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index 9b70723..8c9297a 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -303,6 +303,10 @@ static int __vlan_add(struct net_bridge_vlan *v, u16 flags)
if (p) {
__vlan_vid_del(dev, br, v->vid);
if (masterv) {
+ if (v->stats && masterv->stats != v->stats)
+ free_percpu(v->stats);
+ v->stats = NULL;
+
br_vlan_put_master(masterv);
v->brvlan = NULL;
}