From: Dan Carpenter dan.carpenter@oracle.com
[ Upstream commit 8bdc2acd420c6f3dd1f1c78750ec989f02a1e2b9 ]
We can't use "skb" again after passing it to qdisc_enqueue(). This is basically identical to commit 2f09707d0c97 ("sch_sfb: Also store skb len before calling child enqueue").
Fixes: d7f4f332f082 ("sch_red: update backlog as well") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Reviewed-by: Eric Dumazet edumazet@google.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- net/sched/sch_red.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c index d6abf5c5a5b8..27142950827a 100644 --- a/net/sched/sch_red.c +++ b/net/sched/sch_red.c @@ -61,6 +61,7 @@ static int red_enqueue(struct sk_buff *skb, struct Qdisc *sch, { struct red_sched_data *q = qdisc_priv(sch); struct Qdisc *child = q->qdisc; + unsigned int len; int ret;
q->vars.qavg = red_calc_qavg(&q->parms, @@ -96,9 +97,10 @@ static int red_enqueue(struct sk_buff *skb, struct Qdisc *sch, break; }
+ len = qdisc_pkt_len(skb); ret = qdisc_enqueue(skb, child, to_free); if (likely(ret == NET_XMIT_SUCCESS)) { - qdisc_qstats_backlog_inc(sch, skb); + sch->qstats.backlog += len; sch->q.qlen++; } else if (net_xmit_drop_count(ret)) { q->stats.pdrop++;