1 files changed, 1 insertions, 1 deletions

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 12bba0880345..98aa50c11dd6 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -475,7 +475,7 @@ int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
         lifetime = ntohl(rinfo->lifetime);
         if (lifetime == 0xffffffff) {
                 /* infinity */
-        } else if (lifetime > 0x7fffffff/HZ) {
+        } else if (lifetime > 0x7fffffff/HZ - 1) {
                 /* Avoid arithmetic overflow */
                 lifetime = 0x7fffffff/HZ - 1;
         }