--- a/src/hotspot/share/gc/cms/concurrentMarkSweepGeneration.cpp	Wed Oct 18 14:31:10 2017 +0200
+++ b/src/hotspot/share/gc/cms/concurrentMarkSweepGeneration.cpp	Wed Oct 18 21:13:35 2017 +0200
@@ -55,6 +55,7 @@
 #include "gc/shared/referencePolicy.hpp"
 #include "gc/shared/strongRootsScope.hpp"
 #include "gc/shared/taskqueue.inline.hpp"
+#include "gc/shared/weakProcessor.hpp"
 #include "logging/log.hpp"
 #include "logging/logStream.hpp"
 #include "memory/allocation.hpp"
@@ -5224,6 +5225,11 @@
     pt.print_all_references();
   }
 
+  {
+    GCTraceTime(Debug, gc, phases) t("Weak Processing", _gc_timer_cm);
+    WeakProcessor::weak_oops_do(&_is_alive_closure, &cmsKeepAliveClosure, &cmsDrainMarkingStackClosure);
+  }
+
   // This is the point where the entire marking should have completed.
   verify_work_stacks_empty();