--- a/hotspot/src/share/vm/classfile/classLoaderData.cpp	Thu Jun 26 18:55:29 2014 -0700
+++ b/hotspot/src/share/vm/classfile/classLoaderData.cpp	Fri Jun 27 08:11:49 2014 -0700
@@ -550,6 +550,7 @@
 // GC root of class loader data created.
 ClassLoaderData* ClassLoaderDataGraph::_head = NULL;
 ClassLoaderData* ClassLoaderDataGraph::_unloading = NULL;
+ClassLoaderData* ClassLoaderDataGraph::_saved_unloading = NULL;
 ClassLoaderData* ClassLoaderDataGraph::_saved_head = NULL;
 
 bool ClassLoaderDataGraph::_should_purge = false;
@@ -657,7 +658,9 @@
 
 void ClassLoaderDataGraph::classes_unloading_do(void f(Klass* const)) {
   assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint!");
-  for (ClassLoaderData* cld = _unloading; cld != NULL; cld = cld->next()) {
+  // Only walk the head until any clds not purged from prior unloading
+  // (CMS doesn't purge right away).
+  for (ClassLoaderData* cld = _unloading; cld != _saved_unloading; cld = cld->next()) {
     cld->classes_do(f);
   }
 }
@@ -705,6 +708,11 @@
   ClassLoaderData* data = _head;
   ClassLoaderData* prev = NULL;
   bool seen_dead_loader = false;
+
+  // Save previous _unloading pointer for CMS which may add to unloading list before
+  // purging and we don't want to rewalk the previously unloaded class loader data.
+  _saved_unloading = _unloading;
+
   // mark metadata seen on the stack and code cache so we can delete
   // unneeded entries.
   bool has_redefined_a_class = JvmtiExport::has_redefined_a_class();

--- a/hotspot/src/share/vm/classfile/classLoaderData.hpp	Thu Jun 26 18:55:29 2014 -0700
+++ b/hotspot/src/share/vm/classfile/classLoaderData.hpp	Fri Jun 27 08:11:49 2014 -0700
@@ -66,6 +66,7 @@
   static ClassLoaderData* _unloading;
   // CMS support.
   static ClassLoaderData* _saved_head;
+  static ClassLoaderData* _saved_unloading;
   static bool _should_purge;
 
   static ClassLoaderData* add(Handle class_loader, bool anonymous, TRAPS);

--- a/hotspot/src/share/vm/trace/tracetypes.xml	Thu Jun 26 18:55:29 2014 -0700
+++ b/hotspot/src/share/vm/trace/tracetypes.xml	Fri Jun 27 08:11:49 2014 -0700
@@ -98,6 +98,7 @@
       <value type="SYMBOL" field="name" label="Name"/>
       <value type="SYMBOL" field="signature" label="Signature"/>
       <value type="SHORT" field="modifiers" label="Access modifiers"/>
+      <value type="BOOLEAN" field="hidden" label="Hidden"/>
     </content_type>
 
     <content_type id="UTFConstant" hr_name="UTF constant"

--- a/hotspot/test/runtime/Unsafe/RangeCheck.java	Thu Jun 26 18:55:29 2014 -0700
+++ b/hotspot/test/runtime/Unsafe/RangeCheck.java	Fri Jun 27 08:11:49 2014 -0700
@@ -43,6 +43,7 @@
                 true,
                 "-Xmx32m",
                 "-XX:-TransmitErrorReport",
+                "-XX:-InlineUnsafeOps", // The compiler intrinsics doesn't have the assert
                 DummyClassWithMainRangeCheck.class.getName());
 
         OutputAnalyzer output = new OutputAnalyzer(pb.start());