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Diffstat (limited to 'net/ipv6/ah6.c')
-rw-r--r--net/ipv6/ah6.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index d4b59ecb0b5..1b51d1eedbd 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -370,6 +370,7 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
ip6h->flow_lbl[2] = 0;
ip6h->hop_limit = 0;
+ spin_lock(&x->lock);
{
u8 auth_data[MAX_AH_AUTH_LEN];
@@ -378,13 +379,17 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
skb_push(skb, hdr_len);
err = ah_mac_digest(ahp, skb, ah->auth_data);
if (err)
- goto free_out;
+ goto unlock;
if (memcmp(ahp->work_icv, auth_data, ahp->icv_trunc_len)) {
LIMIT_NETDEBUG(KERN_WARNING "ipsec ah authentication error\n");
err = -EBADMSG;
- goto free_out;
}
}
+unlock:
+ spin_unlock(&x->lock);
+
+ if (err)
+ goto free_out;
skb->network_header += ah_hlen;
memcpy(skb_network_header(skb), tmp_hdr, hdr_len);