--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/NMT/MallocSiteHashOverflow.java	Tue Aug 12 14:06:41 2014 -0700
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @key stress
+ * @test
+ * @summary Test corner case that overflows malloc site hashtable bucket
+ * @key nmt jcmd
+ * @library /testlibrary /testlibrary/whitebox
+ * @ignore - This test is disabled since it will stress NMT and timeout during normal testing
+ * @build MallocSiteHashOverflow
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ * @run main/othervm/timeout=480 -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail MallocSiteHashOverflow
+ */
+
+import com.oracle.java.testlibrary.*;
+import sun.hotspot.WhiteBox;
+
+public class MallocSiteHashOverflow {
+    private static long K = 1024;
+    public static void main(String args[]) throws Exception {
+        String vm_name = System.getProperty("java.vm.name");
+
+        // For 32-bit systems, create 257 malloc sites with the same hash bucket to overflow a hash bucket
+        // For 64-bit systems, create 64K + 1 malloc sites with the same hash bucket to overflow a hash bucket
+        long entries = 257;
+        if (Platform.is64bit()) {
+            entries = 64 * K + 1;
+        }
+
+        OutputAnalyzer output;
+        WhiteBox wb = WhiteBox.getWhiteBox();
+
+        // Grab my own PID
+        String pid = Integer.toString(ProcessTools.getProcessId());
+        ProcessBuilder pb = new ProcessBuilder();
+
+        wb.NMTOverflowHashBucket(entries);
+
+        // Run 'jcmd <pid> VM.native_memory summary'
+        pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "statistics"});
+        output = new OutputAnalyzer(pb.start());
+        output.shouldContain("Tracking level has been downgraded due to lack of resources");
+    }
+}