Re: linux-next 20141208 - net/sched/sch_fq_codel.c:97 suspicious RCU

[Eric Dumazet]

On Tue, Dec 9, 2014 at 10:54 AM,  <Valdis.Kletnieks@xxxxxx> wrote:

> You want a patch, or you got it already?
>

If you could submit it formally, this would be great , thanks !

diff --git a/net/sched/sch_fq_codel.c b/net/sched/sch_fq_codel.c
index b9ca32ebc1de..1e52decb7b59 100644
--- a/net/sched/sch_fq_codel.c
+++ b/net/sched/sch_fq_codel.c
@@ -94,7 +94,7 @@ static unsigned int fq_codel_classify(struct sk_buff
*skb, struct Qdisc *sch,
            TC_H_MIN(skb->priority) <= q->flows_cnt)
                return TC_H_MIN(skb->priority);

-       filter = rcu_dereference(q->filter_list);
+filter = rcu_dereference_bh(q->filter_list);
        if (!filter)
                return fq_codel_hash(q, skb) + 1;
--
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