radix tree test suite: Fix leaks in regression2.c

None of the malloc'ed data structures were ever being freed.  Found with
-fsanitize=address.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/tools/testing/radix-tree/regression2.c b/tools/testing/radix-tree/regression2.c
index a24d1beec7c8..42dd2a33ed24 100644
--- a/tools/testing/radix-tree/regression2.c
+++ b/tools/testing/radix-tree/regression2.c
@@ -103,7 +103,7 @@ void regression2_test(void)
 
         /* 4. */
         for (i = max_slots - 1; i >= 0; i--)
-                radix_tree_delete(&mt_tree, i);
+                free(radix_tree_delete(&mt_tree, i));
 
         /* 5. */
         // NOTE: start should not be 0 because radix_tree_gang_lookup_tag_slot
@@ -114,7 +114,9 @@ void regression2_test(void)
                 PAGECACHE_TAG_TOWRITE);
 
         /* We remove all the remained nodes */
-        radix_tree_delete(&mt_tree, max_slots);
+        free(radix_tree_delete(&mt_tree, max_slots));
+
+        BUG_ON(!radix_tree_empty(&mt_tree));
 
         printv(1, "regression test 2, done\n");
 }