---

yaml
---
r: 97928
b: refs/heads/master
c: 6b6707a
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2e761e0532a784816e7e822dbaaece8c5d4be14d
+refs/heads/master: 6b6707a50c7598a83820077393f8823ab791abf8

trunk/drivers/net/pppol2tp.c

@@ -783,14 +783,18 @@ static int pppol2tp_recvmsg(struct kiocb *iocb, struct socket *sock,
 	err = 0;
 	skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
 				flags & MSG_DONTWAIT, &err);
-	if (skb) {
-		err = memcpy_toiovec(msg->msg_iov, (unsigned char *) skb->data,
-				     skb->len);
-		if (err < 0)
-			goto do_skb_free;
-		err = skb->len;
-	}
-do_skb_free:
+	if (!skb)
+		goto end;
+
+	if (len > skb->len)
+		len = skb->len;
+	else if (len < skb->len)
+		msg->msg_flags |= MSG_TRUNC;
+
+	err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, len);
+	if (likely(err == 0))
+		err = len;
+
 	kfree_skb(skb);
 end:
 	return err;