diff -r 3628aefe13d5 -r d238cd8170fc hotspot/src/share/vm/gc/g1/g1CollectorPolicy.cpp
--- a/hotspot/src/share/vm/gc/g1/g1CollectorPolicy.cpp	Fri Sep 11 10:02:35 2015 +0200
+++ b/hotspot/src/share/vm/gc/g1/g1CollectorPolicy.cpp	Fri Sep 11 13:20:05 2015 +0200
@@ -2037,7 +2037,7 @@
       // We will add this region to the CSet.
       time_remaining_ms = MAX2(time_remaining_ms - predicted_time_ms, 0.0);
       predicted_old_time_ms += predicted_time_ms;
-      cset_chooser->remove_and_move_to_next(hr);
+      cset_chooser->pop(); // already have region via peek()
       _g1->old_set_remove(hr);
       add_old_region_to_cset(hr);