diff -r e92153ed8bdc -r 29b0d0b61615 src/hotspot/share/memory/metaspace.cpp
--- a/src/hotspot/share/memory/metaspace.cpp	Mon Nov 25 12:30:24 2019 +0100
+++ b/src/hotspot/share/memory/metaspace.cpp	Mon Nov 25 12:31:39 2019 +0100
@@ -394,7 +394,7 @@
 }
 
 static void inc_stat_atomically(volatile size_t* pstat, size_t words) {
-  Atomic::add(words, pstat);
+  Atomic::add(pstat, words);
 }
 
 static void dec_stat_atomically(volatile size_t* pstat, size_t words) {