diff --git a/src/bin/scripts/reindexdb.c b/src/bin/scripts/reindexdb.c
index b2c0400cb9..14a4f4a91c 100644
--- a/src/bin/scripts/reindexdb.c
+++ b/src/bin/scripts/reindexdb.c
@@ -473,6 +473,12 @@ reindex_one_database(const char *dbname, ReindexType type,
 		failed = true;
 
 finish:
+	if (process_list != user_list)
+	{
+		simple_string_list_destroy(process_list);
+		pg_free(process_list);
+	}
+
 	ParallelSlotsTerminate(slots, concurrentCons);
 	pfree(slots);
 
diff --git a/src/fe_utils/simple_list.c b/src/fe_utils/simple_list.c
index 8d605140a7..cfdb7dc87a 100644
--- a/src/fe_utils/simple_list.c
+++ b/src/fe_utils/simple_list.c
@@ -99,6 +99,44 @@ simple_string_list_member(SimpleStringList *list, const char *val)
 	return false;
 }
 
+/*
+ * Destroy an OID list
+ */
+void
+simple_oid_list_destroy(SimpleOidList *list)
+{
+	SimpleOidListCell *cell;
+
+	cell = list->head;
+	while (cell != NULL)
+	{
+		SimpleOidListCell *next;
+
+		next = cell->next;
+		pg_free(cell);
+		cell = next;
+	}
+}
+
+/*
+ * Destroy a string list
+ */
+void
+simple_string_list_destroy(SimpleStringList *list)
+{
+	SimpleStringListCell *cell;
+
+	cell = list->head;
+	while (cell != NULL)
+	{
+		SimpleStringListCell *next;
+
+		next = cell->next;
+		pg_free(cell);
+		cell = next;
+	}
+}
+
 /*
  * Find first not-touched list entry, if there is one.
  */
diff --git a/src/include/fe_utils/simple_list.h b/src/include/fe_utils/simple_list.h
index 8a95cbb3a8..75738becf4 100644
--- a/src/include/fe_utils/simple_list.h
+++ b/src/include/fe_utils/simple_list.h
@@ -46,9 +46,11 @@ typedef struct SimpleStringList
 
 extern void simple_oid_list_append(SimpleOidList *list, Oid val);
 extern bool simple_oid_list_member(SimpleOidList *list, Oid val);
+extern void simple_oid_list_destroy(SimpleOidList *list);
 
 extern void simple_string_list_append(SimpleStringList *list, const char *val);
 extern bool simple_string_list_member(SimpleStringList *list, const char *val);
+extern void simple_string_list_destroy(SimpleStringList *list);
 
 extern const char *simple_string_list_not_touched(SimpleStringList *list);