diff -r e92153ed8bdc -r 29b0d0b61615 src/hotspot/share/runtime/os.cpp
--- a/src/hotspot/share/runtime/os.cpp	Mon Nov 25 12:30:24 2019 +0100
+++ b/src/hotspot/share/runtime/os.cpp	Mon Nov 25 12:31:39 2019 +0100
@@ -668,7 +668,7 @@
     if ((cur_malloc_words + words) > MallocMaxTestWords) {
       return true;
     }
-    Atomic::add(words, &cur_malloc_words);
+    Atomic::add(&cur_malloc_words, words);
   }
   return false;
 }