1 files changed, 3 insertions, 1 deletions

diff --git a/net/xfrm/xfrm_replay.c b/net/xfrm/xfrm_replay.c
index 765f6fe951eb..35754cc8a9e5 100644
--- a/net/xfrm/xfrm_replay.c
+++ b/net/xfrm/xfrm_replay.c
@@ -242,11 +242,13 @@ static void xfrm_replay_advance_bmp(struct xfrm_state *x, __be32 net_seq)
         u32 diff;
         struct xfrm_replay_state_esn *replay_esn = x->replay_esn;
         u32 seq = ntohl(net_seq);
-        u32 pos = (replay_esn->seq - 1) % replay_esn->replay_window;
+        u32 pos;
 
         if (!replay_esn->replay_window)
                 return;
 
+        pos = (replay_esn->seq - 1) % replay_esn->replay_window;
+
         if (seq > replay_esn->seq) {
                 diff = seq - replay_esn->seq;