--- old/src/hotspot/share/gc/z/zLiveMap.inline.hpp	2019-11-21 11:53:11.846961508 +0100
+++ new/src/hotspot/share/gc/z/zLiveMap.inline.hpp	2019-11-21 11:53:11.638958111 +0100
@@ -121,8 +121,8 @@
 }
 
 inline void ZLiveMap::inc_live(uint32_t objects, size_t bytes) {
-  Atomic::add(objects, &_live_objects);
-  Atomic::add(bytes, &_live_bytes);
+  Atomic::add(&_live_objects, objects);
+  Atomic::add(&_live_bytes, bytes);
 }
 
 inline BitMap::idx_t ZLiveMap::segment_start(BitMap::idx_t segment) const {