Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.25

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.25: (1470 commits)
  [IPV6] ADDRLABEL: Fix double free on label deletion.
  [PPP]: Sparse warning fixes.
  [IPV4] fib_trie: remove unneeded NULL check
  [IPV4] fib_trie: More whitespace cleanup.
  [NET_SCHED]: Use nla_policy for attribute validation in ematches
  [NET_SCHED]: Use nla_policy for attribute validation in actions
  [NET_SCHED]: Use nla_policy for attribute validation in classifiers
  [NET_SCHED]: Use nla_policy for attribute validation in packet schedulers
  [NET_SCHED]: sch_api: introduce constant for rate table size
  [NET_SCHED]: Use typeful attribute parsing helpers
  [NET_SCHED]: Use typeful attribute construction helpers
  [NET_SCHED]: Use NLA_PUT_STRING for string dumping
  [NET_SCHED]: Use nla_nest_start/nla_nest_end
  [NET_SCHED]: Propagate nla_parse return value
  [NET_SCHED]: act_api: use PTR_ERR in tcf_action_init/tcf_action_get
  [NET_SCHED]: act_api: use nlmsg_parse
  [NET_SCHED]: act_api: fix netlink API conversion bug
  [NET_SCHED]: sch_netem: use nla_parse_nested_compat
  [NET_SCHED]: sch_atm: fix format string warning
  [NETNS]: Add namespace for ICMP replying code.
  ...

1 files changed, 11 insertions, 6 deletions

diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c
index 5fc346d..d76803a 100644
--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -169,6 +169,8 @@ static int ah_input(struct xfrm_state *x, struct sk_buff *skb)
 		if (ip_clear_mutable_options(iph, &dummy))
 			goto out;
 	}
+
+	spin_lock(&x->lock);
 	{
 		u8 auth_data[MAX_AH_AUTH_LEN];
 
@@ -176,13 +178,16 @@ static int ah_input(struct xfrm_state *x, struct sk_buff *skb)
 		skb_push(skb, ihl);
 		err = ah_mac_digest(ahp, skb, ah->auth_data);
 		if (err)
-			goto out;
-		err = -EINVAL;
-		if (memcmp(ahp->work_icv, auth_data, ahp->icv_trunc_len)) {
-			x->stats.integrity_failed++;
-			goto out;
-		}
+			goto unlock;
+		if (memcmp(ahp->work_icv, auth_data, ahp->icv_trunc_len))
+			err = -EBADMSG;
 	}
+unlock:
+	spin_unlock(&x->lock);
+
+	if (err)
+		goto out;
+
 	skb->network_header += ah_hlen;
 	memcpy(skb_network_header(skb), work_buf, ihl);
 	skb->transport_header = skb->network_header;