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Diffstat (limited to 'net/ipv6/ah6.c')
-rw-r--r--net/ipv6/ah6.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index ff904a711f3a..c51d77564b44 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -29,6 +29,7 @@
#include <net/ah.h>
#include <linux/crypto.h>
#include <linux/pfkeyv2.h>
+#include <linux/spinlock.h>
#include <linux/string.h>
#include <net/icmp.h>
#include <net/ipv6.h>
@@ -284,12 +285,14 @@ static int ah6_output(struct xfrm_state *x, struct sk_buff *skb)
ah->reserved = 0;
ah->spi = x->id.spi;
ah->seq_no = htonl(XFRM_SKB_CB(skb)->seq);
+
+ spin_lock_bh(&x->lock);
err = ah_mac_digest(ahp, skb, ah->auth_data);
- if (err)
- goto error_free_iph;
memcpy(ah->auth_data, ahp->work_icv, ahp->icv_trunc_len);
+ spin_unlock_bh(&x->lock);
- err = 0;
+ if (err)
+ goto error_free_iph;
memcpy(top_iph, tmp_base, sizeof(tmp_base));
if (tmp_ext) {