qfq: don't leak skb if kzalloc fails
When we need to create a new aggregate to enqueue the skb we call kzalloc.
If that fails we returned ENOBUFS without freeing the skb.
Spotted during code review.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c
index 8d2d8d9..f18857f 100644
--- a/net/sched/sch_qfq.c
+++ b/net/sched/sch_qfq.c
@@ -1235,8 +1235,10 @@
cl->agg->lmax, qdisc_pkt_len(skb), cl->common.classid);
err = qfq_change_agg(sch, cl, cl->agg->class_weight,
qdisc_pkt_len(skb));
- if (err)
- return err;
+ if (err) {
+ cl->qstats.drops++;
+ return qdisc_drop(skb, sch);
+ }
}
err = qdisc_enqueue(skb, cl->qdisc);