---

yaml
---
r: 97082
b: refs/heads/master
c: 090c48d
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 066b2118976e6e7cc50eed39e2747c75343a23c4
+refs/heads/master: 090c48d3dd5ea90b37350334aaed9a93b0c1e0a1

trunk/drivers/net/pppol2tp.c

@@ -980,6 +980,8 @@ static int pppol2tp_xmit(struct ppp_channel *chan, struct sk_buff *skb)
 	__wsum csum = 0;
 	struct udphdr *uh;
 	unsigned int len;
+	int old_headroom;
+	int new_headroom;
 
 	if (sock_flag(sk, SOCK_DEAD) || !(sk->sk_state & PPPOX_CONNECTED))
 		goto abort;
@@ -1001,16 +1003,18 @@ static int pppol2tp_xmit(struct ppp_channel *chan, struct sk_buff *skb)
 
 	/* Check that there's enough headroom in the skb to insert IP,
 	 * UDP and L2TP and PPP headers. If not enough, expand it to
-	 * make room. Note that a new skb (or a clone) is
-	 * allocated. If we return an error from this point on, make
-	 * sure we free the new skb but do not free the original skb
-	 * since that is done by the caller for the error case.
+	 * make room. Adjust truesize.
 	 */
 	headroom = NET_SKB_PAD + sizeof(struct iphdr) +
 		sizeof(struct udphdr) + hdr_len + sizeof(ppph);
+	old_headroom = skb_headroom(skb);
 	if (skb_cow_head(skb, headroom))
 		goto abort;
 
+	new_headroom = skb_headroom(skb);
+	skb_orphan(skb);
+	skb->truesize += new_headroom - old_headroom;
+
 	/* Setup PPP header */
 	__skb_push(skb, sizeof(ppph));
 	skb->data[0] = ppph[0];
@@ -1065,7 +1069,6 @@ static int pppol2tp_xmit(struct ppp_channel *chan, struct sk_buff *skb)
 	/* Get routing info from the tunnel socket */
 	dst_release(skb->dst);
 	skb->dst = dst_clone(__sk_dst_get(sk_tun));
-	skb_orphan(skb);
 	skb->sk = sk_tun;
 
 	/* Queue the packet to IP for output */