1 files changed, 1 insertions, 2 deletions

diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index 7cbdada51049..b32efae7688e 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -389,8 +389,7 @@ void *radix_tree_tag_set(struct radix_tree_root *root,
         struct radix_tree_node *slot;
 
         height = root->height;
-        if (index > radix_tree_maxindex(height))
-                return NULL;
+        BUG_ON(index > radix_tree_maxindex(height));
 
         slot = root->rnode;
         shift = (height - 1) * RADIX_TREE_MAP_SHIFT;