diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index 694f7491731dba82cc2c5365adf62f60398f811c..8674d49195561fc7ed33a5b086eb4014d80f46a7 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -1533,7 +1533,8 @@ static int sctp_cmd_interpreter(sctp_event_t event_type,
 		case SCTP_CMD_PROCESS_CTSN:
 			/* Dummy up a SACK for processing. */
 			sackh.cum_tsn_ack = cmd->obj.be32;
-			sackh.a_rwnd = 0;
+			sackh.a_rwnd = asoc->peer.rwnd +
+					asoc->outqueue.outstanding_bytes;
 			sackh.num_gap_ack_blocks = 0;
 			sackh.num_dup_tsns = 0;
 			sctp_add_cmd_sf(commands, SCTP_CMD_PROCESS_SACK,
@@ -1632,9 +1633,9 @@ static int sctp_cmd_interpreter(sctp_event_t event_type,
 	 */
 	if (asoc && SCTP_EVENT_T_CHUNK == event_type && chunk) {
 		if (chunk->end_of_packet || chunk->singleton)
-			sctp_outq_uncork(&asoc->outqueue);
+			error = sctp_outq_uncork(&asoc->outqueue);
 	} else if (local_cork)
-			sctp_outq_uncork(&asoc->outqueue);
+		error = sctp_outq_uncork(&asoc->outqueue);
 	return error;
 nomem:
 	error = -ENOMEM;