1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 6a386ab4f7eb..d880299334e9 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -553,6 +553,12 @@ static int parse_path_selector(struct arg_set *as, struct priority_group *pg,
                 return -EINVAL;
         }
 
+        if (ps_argc > as->argc) {
+                dm_put_path_selector(pst);
+                ti->error = "not enough arguments for path selector";
+                return -EINVAL;
+        }
+
         r = pst->create(&pg->ps, ps_argc, as->argv);
         if (r) {
                 dm_put_path_selector(pst);