[PATCH 4/7] [IPV4]: Fix DST leak in icmp_push_reply()

[Chris Wright <chrisw@osdl.org>]

[-- Attachment #1: fix-dst-leak-in-icmp_push_reply.patch --]
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-stable review patch.  If anyone has any  objections, please let us know.
------------------

Based upon a bug report and initial patch by
Ollie Wild.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Chris Wright <chrisw@osdl.org>
---
 net/ipv4/icmp.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)

Index: linux-2.6.12.y/net/ipv4/icmp.c
===================================================================
--- linux-2.6.12.y.orig/net/ipv4/icmp.c
+++ linux-2.6.12.y/net/ipv4/icmp.c
@@ -349,12 +349,12 @@ static void icmp_push_reply(struct icmp_
 {
 	struct sk_buff *skb;
 
-	ip_append_data(icmp_socket->sk, icmp_glue_bits, icmp_param,
-		       icmp_param->data_len+icmp_param->head_len,
-		       icmp_param->head_len,
-		       ipc, rt, MSG_DONTWAIT);
-
-	if ((skb = skb_peek(&icmp_socket->sk->sk_write_queue)) != NULL) {
+	if (ip_append_data(icmp_socket->sk, icmp_glue_bits, icmp_param,
+		           icmp_param->data_len+icmp_param->head_len,
+		           icmp_param->head_len,
+		           ipc, rt, MSG_DONTWAIT) < 0)
+		ip_flush_pending_frames(icmp_socket->sk);
+	else if ((skb = skb_peek(&icmp_socket->sk->sk_write_queue)) != NULL) {
 		struct icmphdr *icmph = skb->h.icmph;
 		unsigned int csum = 0;
 		struct sk_buff *skb1;

--