--- libmalloc/libmalloc-166.251.2/tests/tsan.c
+++ libmalloc/libmalloc-283.100.6/tests/tsan.c
@@ -2,6 +2,8 @@
 #include <dlfcn.h>
 #include <pthread.h>
 #include <stdlib.h>
+
+T_GLOBAL_META(T_META_RUN_CONCURRENTLY(true));
 
 T_DECL(tsan_sanity, "TSan Sanity Check", T_META_CHECK_LEAKS(NO))
 {