--- old/src/hotspot/share/runtime/biasedLocking.cpp	Tue Nov 21 15:20:27 2017
+++ new/src/hotspot/share/runtime/biasedLocking.cpp	Tue Nov 21 15:20:26 2017
@@ -215,12 +215,8 @@
   if (requesting_thread == biased_thread) {
     thread_is_alive = true;
   } else {
-    for (JavaThreadIteratorWithHandle jtiwh; JavaThread *cur_thread = jtiwh.next(); ) {
-      if (cur_thread == biased_thread) {
-        thread_is_alive = true;
-        break;
-      }
-    }
+    ThreadsListHandle tlh;
+    thread_is_alive = tlh.includes(biased_thread);
   }
   if (!thread_is_alive) {
     if (allow_rebias) {