--- old/src/share/vm/gc/g1/g1RemSet.cpp	2017-05-31 10:01:16.088053762 +0200
+++ new/src/share/vm/gc/g1/g1RemSet.cpp	2017-05-31 10:01:15.967050021 +0200
@@ -187,7 +187,6 @@
       _iter_states[i] = Unclaimed;
     }
 
-    memset(_scan_top, 0, _max_regions * sizeof(HeapWord*));
     G1ResetScanTopClosure cl(_scan_top);
     G1CollectedHeap::heap()->heap_region_iterate(&cl);