--- old/src/hotspot/share/gc/cms/parNewGeneration.cpp	2018-04-17 15:16:15.240319187 +0200
+++ new/src/hotspot/share/gc/cms/parNewGeneration.cpp	2018-04-17 15:16:14.961310603 +0200
@@ -1472,13 +1472,13 @@
   if (_ref_processor == NULL) {
     // Allocate and initialize a reference processor
     _ref_processor =
-      new ReferenceProcessor(_reserved,                  // span
-                             ParallelRefProcEnabled && (ParallelGCThreads > 1), // mt processing
-                             ParallelGCThreads,          // mt processing degree
-                             refs_discovery_is_mt(),     // mt discovery
-                             ParallelGCThreads,          // mt discovery degree
-                             refs_discovery_is_atomic(), // atomic_discovery
-                             NULL);                      // is_alive_non_header
+      new SpanReferenceProcessor(_reserved,                  // span
+                                 ParallelRefProcEnabled && (ParallelGCThreads > 1), // mt processing
+                                 ParallelGCThreads,          // mt processing degree
+                                 refs_discovery_is_mt(),     // mt discovery
+                                 ParallelGCThreads,          // mt discovery degree
+                                 refs_discovery_is_atomic(), // atomic_discovery
+                                 NULL);                      // is_alive_non_header
   }
 }