[IPV6] XFRM: Don't use old copy of pointer after pskb_may_pull().

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
git-mirror · Apr 18, 2006 · e3cae90 · e3cae90
1 parent ec67009
commit e3cae90
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
@@ -193,14 +193,16 @@ _decode_session6(struct sk_buff *skb, struct flowi *fl)
 {
 	u16 offset = sizeof(struct ipv6hdr);
 	struct ipv6hdr *hdr = skb->nh.ipv6h;
-	struct ipv6_opt_hdr *exthdr = (struct ipv6_opt_hdr*)(skb->nh.raw + offset);
+	struct ipv6_opt_hdr *exthdr;
 	u8 nexthdr = skb->nh.ipv6h->nexthdr;
 
 	memset(fl, 0, sizeof(struct flowi));
 	ipv6_addr_copy(&fl->fl6_dst, &hdr->daddr);
 	ipv6_addr_copy(&fl->fl6_src, &hdr->saddr);
 
 	while (pskb_may_pull(skb, skb->nh.raw + offset + 1 - skb->data)) {
+		exthdr = (struct ipv6_opt_hdr*)(skb->nh.raw + offset);
+
 		switch (nexthdr) {
 		case NEXTHDR_ROUTING:
 		case NEXTHDR_HOP: