1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 79eab1071ec2..5a51151f680d 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -943,7 +943,8 @@ static int get_mirror(struct mirror_set *ms, struct dm_target *ti,
         char dummy;
         int ret;
 
-        if (sscanf(argv[1], "%llu%c", &offset, &dummy) != 1) {
+        if (sscanf(argv[1], "%llu%c", &offset, &dummy) != 1 ||
+            offset != (sector_t)offset) {
                 ti->error = "Invalid offset";
                 return -EINVAL;
         }