netdev - [PATCH net] qfq: don't leak skb if kzalloc fails

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Message-Id: <1465389093-29674-1-git-send-email-fw@strlen.de>
Date:	Wed,  8 Jun 2016 14:31:33 +0200
From:	Florian Westphal <fw@...len.de>
To:	<netdev@...r.kernel.org>
Cc:	Florian Westphal <fw@...len.de>
Subject: [PATCH net] qfq: don't leak skb if kzalloc fails

When we need to create a new aggregate to enqueue the skb we need
to kzalloc the new struct.

If that fails we returned ENOBUFS without freeing the skb.

Spotted during code review.

Signed-off-by: Florian Westphal <fw@...len.de>
---
 net/sched/sch_qfq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c
index 8d2d8d9..435b970 100644
--- a/net/sched/sch_qfq.c
+++ b/net/sched/sch_qfq.c
@@ -1236,7 +1236,7 @@ static int qfq_enqueue(struct sk_buff *skb, struct Qdisc *sch)
 		err = qfq_change_agg(sch, cl, cl->agg->class_weight,
 				     qdisc_pkt_len(skb));
 		if (err)
-			return err;
+			return qdisc_drop(skb, sch);
 	}
 
 	err = qdisc_enqueue(skb, cl->qdisc);
-- 
2.7.3