From e43eb9472deddd987436b3c6be755ff838f23b01 Mon Sep 17 00:00:00 2001
From: mtaylor <mtaylor@0192ed92-7a03-0410-a25b-9323aeb14dbd>
Date: Wed, 16 Jan 2008 00:02:50 +0000
Subject: [PATCH] Fix for NULL dereference in skb tracking code

git-svn-id: http://madwifi-project.org/svn/madwifi/trunk@3136 0192ed92-7a03-0410-a25b-9323aeb14dbd
---
 net80211/ieee80211_skb.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net80211/ieee80211_skb.c b/net80211/ieee80211_skb.c
index 6b09375..c476247 100644
--- a/net80211/ieee80211_skb.c
+++ b/net80211/ieee80211_skb.c
@@ -268,7 +268,8 @@ static void print_skb_trackchange_message(
 
 static struct sk_buff *
 clean_clone_or_copy(struct sk_buff *skb) {
-	SKB_CB(skb)->tracked = 0;
+	if (skb != NULL)
+		SKB_CB(skb)->tracked = 0;
 	return skb;
 }