1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c
index 3cb97fa4c11d..8261aa8c7fe1 100644
--- a/drivers/md/dm-flakey.c
+++ b/drivers/md/dm-flakey.c
@@ -213,7 +213,7 @@ static int flakey_ctr(struct dm_target *ti, unsigned int argc, char **argv)
         devname = dm_shift_arg(&as);
 
         r = -EINVAL;
-        if (sscanf(dm_shift_arg(&as), "%llu%c", &tmpll, &dummy) != 1) {
+        if (sscanf(dm_shift_arg(&as), "%llu%c", &tmpll, &dummy) != 1 || tmpll != (sector_t)tmpll) {
                 ti->error = "Invalid device sector";
                 goto bad;
         }