[SCTP]: Return socket errors only if the receive queue is empty.
This patch fixes an issue where it is possible to get valid data after
a ENOTCONN error. It returns socket errors only after data queued on
socket receive queue is consumed.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index abab81f..d890dfa 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -4743,11 +4743,6 @@
struct sk_buff *skb;
long timeo;
- /* Caller is allowed not to check sk->sk_err before calling. */
- error = sock_error(sk);
- if (error)
- goto no_packet;
-
timeo = sock_rcvtimeo(sk, noblock);
SCTP_DEBUG_PRINTK("Timeout: timeo: %ld, MAX: %ld.\n",
@@ -4774,6 +4769,11 @@
if (skb)
return skb;
+ /* Caller is allowed not to check sk->sk_err before calling. */
+ error = sock_error(sk);
+ if (error)
+ goto no_packet;
+
if (sk->sk_shutdown & RCV_SHUTDOWN)
break;