[IPV6]: Repair IPv6 Fragments

The commit "[IPV6]: Use kmemdup" (commit-id:
af879cc704372ef762584e916129d19ffb39e844) broke IPv6 fragments.

Bug was spotted by Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index e05ecbb1412d..e9212c7ff5cf 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -624,13 +624,13 @@ static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
                 skb_shinfo(skb)->frag_list = NULL;
                 /* BUILD HEADER */
 
+                *prevhdr = NEXTHDR_FRAGMENT;
                 tmp_hdr = kmemdup(skb->nh.raw, hlen, GFP_ATOMIC);
                 if (!tmp_hdr) {
                         IP6_INC_STATS(ip6_dst_idev(skb->dst), IPSTATS_MIB_FRAGFAILS);
                         return -ENOMEM;
                 }
 
-                *prevhdr = NEXTHDR_FRAGMENT;
                 __skb_pull(skb, hlen);
                 fh = (struct frag_hdr*)__skb_push(skb, sizeof(struct frag_hdr));
                 skb->nh.raw = __skb_push(skb, hlen);