net: fix infinite loop in __skb_recv_datagram()

[karo-tx-linux.git] / net / core / datagram.c

diff --git a/net/core/datagram.c b/net/core/datagram.c
index 0337e2b768628d353936dc09ba4fe483b2c5b638..368f9c3f9dc6505e693f56066da6dcb19ec2ebd6 100644 (file)
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -187,7 +187,7 @@ struct sk_buff *__skb_recv_datagram(struct sock *sk, unsigned int flags,
                skb_queue_walk(queue, skb) {
                        *peeked = skb->peeked;
                        if (flags & MSG_PEEK) {
-                               if (*off >= skb->len) {
+                               if (*off >= skb->len && skb->len) {
                                        *off -= skb->len;
                                        continue;
                                }