[ICMP]: Restore pskb_pull calls in receive function

Somewhere along the development of my ICMP relookup patch the header
length check went AWOL on the non-IPsec path.  This patch restores the
check.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index a7321a82df6d..a13c074dac09 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -1015,7 +1015,8 @@ int icmp_rcv(struct sk_buff *skb)
                         goto error;
         }
 
-        __skb_pull(skb, sizeof(*icmph));
+        if (!pskb_pull(skb, sizeof(*icmph)))
+                goto error;
 
         icmph = icmp_hdr(skb);