af_iucv: recvmsg problem for SOCK_STREAM sockets

Commit f9c41a6 introduced a problem for SOCK_STREAM sockets, when only part of the incoming iucv message is received by user space. In this case the remaining data of the iucv message is lost. This patch makes sure an incompletely received iucv message is queued back to the receive queue. Signed-off-by: Ursula Braun <[email protected]> Signed-off-by: Frank Blaschka <[email protected]> Reported-by: Hendrik Brueckner <[email protected]> Signed-off-by: David S. Miller <[email protected]>
mpe · Mar 20, 2014 · 2f139a5 · 2f139a5
1 parent 2024816
commit 2f139a5
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
@@ -1382,6 +1382,7 @@ static int iucv_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
 		if (sk->sk_type == SOCK_STREAM) {
 			if (copied < rlen) {
 				IUCV_SKB_CB(skb)->offset = offset + copied;
+				skb_queue_head(&sk->sk_receive_queue, skb);
 				goto done;
 			}
 		}