[SCTP]: We need to be careful when copying to sockaddr_storage.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sctp/associola.c

@@ -733,7 +733,7 @@ void sctp_assoc_control_transport(struct sctp_association *asoc,
 	 * user.
 	 */
 	memset(&addr, 0, sizeof(struct sockaddr_storage));
-	flip_to_n((union sctp_addr *)&addr, &transport->ipaddr_h);
+	memcpy(&addr, &transport->ipaddr, transport->af_specific->sockaddr_len);
 	event = sctp_ulpevent_make_peer_addr_change(asoc, &addr,
 				0, spc_state, error, GFP_ATOMIC);
 	if (event)

net/sctp/socket.c

@@ -3202,8 +3202,8 @@ static int sctp_getsockopt_sctp_status(struct sock *sk, int len,
 	status.sstat_outstrms = asoc->c.sinit_num_ostreams;
 	status.sstat_fragmentation_point = asoc->frag_point;
 	status.sstat_primary.spinfo_assoc_id = sctp_assoc2id(transport->asoc);
-	flip_to_n((union sctp_addr *)&status.sstat_primary.spinfo_address,
-	       &transport->ipaddr_h);
+	memcpy(&status.sstat_primary.spinfo_address, &transport->ipaddr,
+			transport->af_specific->sockaddr_len);
 	/* Map ipv4 address into v4-mapped-on-v6 address.  */
 	sctp_get_pf_specific(sk->sk_family)->addr_v4map(sctp_sk(sk),
 		(union sctp_addr *)&status.sstat_primary.spinfo_address);
@@ -4173,8 +4173,8 @@ static int sctp_getsockopt_primary_addr(struct sock *sk, int len,
 	if (!asoc->peer.primary_path)
 		return -ENOTCONN;
 	
-	flip_to_n((union sctp_addr *)&prim.ssp_addr,
-		  &asoc->peer.primary_path->ipaddr_h);
+	memcpy(&prim.ssp_addr, &asoc->peer.primary_path->ipaddr,
+		asoc->peer.primary_path->af_specific->sockaddr_len);
 
 	sctp_get_pf_specific(sk->sk_family)->addr_v4map(sp,
 			(union sctp_addr *)&prim.ssp_addr);