Subject: [PATCH 1/1] net:sched fix a bug about memery leak

From: Jing Wang <[email-masked]>
Date: Thu, 24 Oct 2013 17:06:20 +0800

From: Jing Wang <[email-masked]>

the code isn't properly release memory

Signed-off-by: Jing Wang <[email-masked]>
---
 net/sched/cls_route.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/net/sched/cls_route.c b/net/sched/cls_route.c
index 37da567..118f8d5 100644
--- a/net/sched/cls_route.c
+++ b/net/sched/cls_route.c
@@ -466,11 +466,11 @@ static int route4_change(struct net *net, struct sk_buff *in_skb,
 		goto reinsert;
 	}
 
-	err = -ENOBUFS;
+	err = -ENOMEM;
 	if (head == NULL) {
 		head = kzalloc(sizeof(struct route4_head), GFP_KERNEL);
 		if (head == NULL)
-			goto errout;
+			goto errhead;
 
 		tcf_tree_lock(tp);
 		tp->root = head;
@@ -479,7 +479,7 @@ static int route4_change(struct net *net, struct sk_buff *in_skb,
 
 	f = kzalloc(sizeof(struct route4_filter), GFP_KERNEL);
 	if (f == NULL)
-		goto errout;
+		goto errflt;
 
 	err = route4_set_parms(net, tp, base, f, handle, head, tb,
 		tca[TCA_RATE], 1);
@@ -517,6 +517,9 @@ reinsert:
 
 errout:
 	kfree(f);
+errflt:
+    kfree(head);
+errhead:
 	return err;
 }
 
-- 
1.7.1