--- old/src/hotspot/share/jfr/periodic/jfrPeriodic.cpp	2018-09-10 08:57:52.032783020 -0400
+++ new/src/hotspot/share/jfr/periodic/jfrPeriodic.cpp	2018-09-10 08:57:51.780783030 -0400
@@ -466,9 +466,9 @@
 
   bool do_entry(oop const& key, ClassLoaderStats* const& cls) {
     const ClassLoaderData* this_cld = cls->_class_loader != NULL ?
-      java_lang_ClassLoader::loader_data(cls->_class_loader) : (ClassLoaderData*)NULL;
+      java_lang_ClassLoader::loader_data_acquire(cls->_class_loader) : NULL;
     const ClassLoaderData* parent_cld = cls->_parent != NULL ?
-      java_lang_ClassLoader::loader_data(cls->_parent) : (ClassLoaderData*)NULL;
+      java_lang_ClassLoader::loader_data_acquire(cls->_parent) : NULL;
     EventClassLoaderStatistics event;
     event.set_classLoader(this_cld);
     event.set_parentClassLoader(parent_cld);