Patch "fq_codel: fix a use-after-free" has been added to the 4.1-stable tree

Patch "fq_codel: fix a use-after-free" has been added to the 4.1-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    fq_codel: fix a use-after-free

to the 4.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     fq_codel-fix-a-use-after-free.patch
and it can be found in the queue-4.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Sat Sep 26 11:13:07 PDT 2015
From: WANG Cong <xiyou.wangcong@gmail.com>
Date: Mon, 13 Jul 2015 12:30:07 -0700
Subject: fq_codel: fix a use-after-free

From: WANG Cong <xiyou.wangcong@gmail.com>

[ Upstream commit 052cbda41fdc243a8d40cce7ab3a6327b4b2887e ]

Fixes: 25331d6ce42b ("net: sched: implement qstat helper routines")
Cc: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/sched/sch_fq_codel.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/sched/sch_fq_codel.c
+++ b/net/sched/sch_fq_codel.c
@@ -162,10 +162,10 @@ static unsigned int fq_codel_drop(struct
 	skb = dequeue_head(flow);
 	len = qdisc_pkt_len(skb);
 	q->backlogs[idx] -= len;
-	kfree_skb(skb);
 	sch->q.qlen--;
 	qdisc_qstats_drop(sch);
 	qdisc_qstats_backlog_dec(sch, skb);
+	kfree_skb(skb);
 	flow->dropped++;
 	return idx;
 }


Patches currently in stable-queue which might be from xiyou.wangcong@gmail.com are

queue-4.1/fq_codel-fix-a-use-after-free.patch