Patch "net: sched: fix missing free per cpu on qstats" has been added to the 4.3-stable tree

Patch "net: sched: fix missing free per cpu on qstats" has been added to the 4.3-stable tree

[gregkh]

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

    net: sched: fix missing free per cpu on qstats

to the 4.3-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:
     net-sched-fix-missing-free-per-cpu-on-qstats.patch
and it can be found in the queue-4.3 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 Tue Jan 26 21:35:03 PST 2016
From: John Fastabend <john.fastabend@gmail.com>
Date: Tue, 5 Jan 2016 09:11:36 -0800
Subject: net: sched: fix missing free per cpu on qstats

From: John Fastabend <john.fastabend@gmail.com>

[ Upstream commit 73c20a8b7245273125cfe92c4b46e6fdb568a801 ]

When a qdisc is using per cpu stats (currently just the ingress
qdisc) only the bstats are being freed. This also free's the qstats.

Fixes: b0ab6f92752b9f9d8 ("net: sched: enable per cpu qstats")
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/sched/sch_generic.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -658,8 +658,10 @@ static void qdisc_rcu_free(struct rcu_he
 {
 	struct Qdisc *qdisc = container_of(head, struct Qdisc, rcu_head);
 
-	if (qdisc_is_percpu_stats(qdisc))
+	if (qdisc_is_percpu_stats(qdisc)) {
 		free_percpu(qdisc->cpu_bstats);
+		free_percpu(qdisc->cpu_qstats);
+	}
 
 	kfree((char *) qdisc - qdisc->padded);
 }


Patches currently in stable-queue which might be from john.fastabend@gmail.com are

queue-4.3/net-sched-fix-missing-free-per-cpu-on-qstats.patch
queue-4.3/net-pktgen-fix-null-ptr-deref-in-skb-allocation.patch