[SCTP]: Fix bug in restart of peeled-off associations.

Signed-off-by: Vladislav Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sctp/socket.c

@@ -4686,6 +4686,7 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
 	struct sctp_endpoint *newep = newsp->ep;
 	struct sk_buff *skb, *tmp;
 	struct sctp_ulpevent *event;
+	int flags = 0;
 
 	/* Migrate socket buffer sizes and all the socket level options to the
 	 * new socket.
@@ -4707,6 +4708,17 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
 	sctp_sk(newsk)->bind_hash = pp;
 	inet_sk(newsk)->num = inet_sk(oldsk)->num;
 
+	/* Copy the bind_addr list from the original endpoint to the new
+	 * endpoint so that we can handle restarts properly
+	 */
+	if (assoc->peer.ipv4_address)
+		flags |= SCTP_ADDR4_PEERSUPP;
+	if (assoc->peer.ipv6_address)
+		flags |= SCTP_ADDR6_PEERSUPP;
+	sctp_bind_addr_copy(&newsp->ep->base.bind_addr,
+			     &oldsp->ep->base.bind_addr,
+			     SCTP_SCOPE_GLOBAL, GFP_KERNEL, flags);
+
 	/* Move any messages in the old socket's receive queue that are for the
 	 * peeled off association to the new socket's receive queue.
 	 */