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

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


From: Tommi Rantala <tt.rant...@gmail.com>

[ Upstream commit 41ab3e31bd50b42c85ac0aa0469642866aee2a9a ]

ip6gre_tunnel_xmit() is leaking the skb when we hit this error branch,
and the -1 return value from this function is bogus. Use the error
handling we already have in place in ip6gre_tunnel_xmit() for this error
case to fix this.

Signed-off-by: Tommi Rantala <tt.rant...@gmail.com>
Acked-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/ipv6/ip6_gre.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -976,7 +976,7 @@ static netdev_tx_t ip6gre_tunnel_xmit(st
        int ret;
 
        if (!ip6_tnl_xmit_ctl(t))
-               return -1;
+               goto tx_err;
 
        switch (skb->protocol) {
        case htons(ETH_P_IP):


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