3.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andrey Utkin <andrey.krieger.ut...@gmail.com>

[ Upstream commit 36beddc272c111689f3042bf3d10a64d8a805f93 ]

Setting just skb->sk without taking its reference and setting a
destructor is invalid. However, in the places where this was done, skb
is used in a way not requiring skb->sk setting. So dropping the setting
of skb->sk.
Thanks to Eric Dumazet <eric.duma...@gmail.com> for correct solution.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=79441
Reported-by: Ed Martin <edman...@edman007.com>
Signed-off-by: Andrey Utkin <andrey.krieger.ut...@gmail.com>
Signed-off-by: Eric Dumazet <eduma...@google.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 net/appletalk/ddp.c |    3 ---
 1 file changed, 3 deletions(-)

--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1489,8 +1489,6 @@ static int atalk_rcv(struct sk_buff *skb
                goto drop;
 
        /* Queue packet (standard) */
-       skb->sk = sock;
-
        if (sock_queue_rcv_skb(sock, skb) < 0)
                goto drop;
 
@@ -1644,7 +1642,6 @@ static int atalk_sendmsg(struct kiocb *i
        if (!skb)
                goto out;
 
-       skb->sk = sk;
        skb_reserve(skb, ddp_dl->header_length);
        skb_reserve(skb, dev->hard_header_len);
        skb->dev = dev;


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