Merge branch 'sctp-fixes'

Marcelo Ricardo Leitner says:

====================
couple of sctp fixes for 0ca50d12fe46

These are two fixes for sctp after my patch on 0ca50d12fe46 ("sctp: fix
src address selection if using secondary addresses")

The first, fix a dst leak on those it decided to skip.

The second, adds the fallback on src selection that Vlad had asked
about. Unfortunatelly a lot of ipvs setups relies on the old behavior
and I don't see a better fix for it.

Please consider both to -stable tree.
====================

Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sctp/protocol.c

@@ -506,14 +506,22 @@ static void sctp_v4_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
 		if (IS_ERR(rt))
 			continue;
 
+		if (!dst)
+			dst = &rt->dst;
+
 		/* Ensure the src address belongs to the output
 		 * interface.
 		 */
 		odev = __ip_dev_find(sock_net(sk), laddr->a.v4.sin_addr.s_addr,
 				     false);
-		if (!odev || odev->ifindex != fl4->flowi4_oif)
+		if (!odev || odev->ifindex != fl4->flowi4_oif) {
+			if (&rt->dst != dst)
+				dst_release(&rt->dst);
 			continue;
+		}
 
+		if (dst != &rt->dst)
+			dst_release(dst);
 		dst = &rt->dst;
 		break;
 	}