$ jtreg -va jdk/test/sun/management/jmxremote/bootstrap/RmiBootstrapTest.sh (fails 1/100)

*** Testing configuration (port=36587): /home/hedongbo/myprojects/testJDK/JVM/test/testsuite/openjdk/test_result-RmiBootstrapTest/jtwork-42/classes/sun/management/jmxremote/bootstrap/management_test06_ok.properties
***
PasswordFileName: /home/hedongbo/myprojects/testJDK/JVM/test/testsuite/openjdk/test_result-RmiBootstrapTest/jtwork-42/classes/sun/management/jmxremote/bootstrap/jmxremote_test06_ok.password
accessFileName: /home/hedongbo/myprojects/openJDK/bak/jdk8u-dev/build/linux-x86_64-normal-server-release/images/j2sdk-image/jre/lib/management/jmxremote.access
Communication succeeded as expected for {controlRole, R&D}: found 1MBean
Communication succeeded as expected for {monitorRole, QED}: found 1MBean
Connection failed as expected for {bad.user, R&D}: java.lang.SecurityException: Authentication failed! Invalid username or password
Connection failed as expected for {measure, bad.password}: java.lang.SecurityException: Authentication failed! Invalid username or password
Configuration /home/hedongbo/myprojects/testJDK/JVM/test/testsuite/openjdk/test_result-RmiBootstrapTest/jtwork-42/classes/sun/management/jmxremote/bootstrap/management_test06_ok.properties successfully tested
***
*** Testing configuration (port=36588): /home/hedongbo/myprojects/testJDK/JVM/test/testsuite/openjdk/test_result-RmiBootstrapTest/jtwork-42/classes/sun/management/jmxremote/bootstrap/management_test02_ok.properties
***
***
*** Testing configuration (port=36589): /home/hedongbo/myprojects/testJDK/JVM/test/testsuite/openjdk/test_result-RmiBootstrapTest/jtwork-42/classes/sun/management/jmxremote/bootstrap/management_test01_ok.properties
***
Test Failed: 4
STDERR:
rerun:
cd /home/hedongbo/myprojects/testJDK/JVM/test/testsuite/openjdk/test_result-RmiBootstrapTest/jtwork-42/scratch && \
HOME=/home/hedongbo \
LANG=en_US.UTF-8 \
LC_CTYPE=zh_CN.UTF-8 \
PATH=/bin:/usr/bin \
TESTSRC=/home/hedongbo/myprojects/testJDK/JVM/test/testsuite/openjdk/jdk8u/jdk/test/sun/management/jmxremote/bootstrap \
TESTSRCPATH=/home/hedongbo/myprojects/testJDK/JVM/test/testsuite/openjdk/jdk8u/jdk/test/sun/management/jmxremote/bootstrap \
TESTCLASSES=/home/hedongbo/myprojects/testJDK/JVM/test/testsuite/openjdk/test_result-RmiBootstrapTest/jtwork-42/classes/sun/management/jmxremote/bootstrap \
TESTCLASSPATH=/home/hedongbo/myprojects/testJDK/JVM/test/testsuite/openjdk/test_result-RmiBootstrapTest/jtwork-42/classes/sun/management/jmxremote/bootstrap \
COMPILEJAVA=/home/hedongbo/myprojects/openJDK/bak/jdk8u-dev/build/linux-x86_64-normal-server-release/images/j2sdk-image \
TESTJAVA=/home/hedongbo/myprojects/openJDK/bak/jdk8u-dev/build/linux-x86_64-normal-server-release/images/j2sdk-image \
TESTVMOPTS= \
TESTTOOLVMOPTS= \
TESTJAVACOPTS= \
TESTJAVAOPTS= \
TESTTIMEOUTFACTOR=10.0 \
    sh \
        /home/hedongbo/myprojects/testJDK/JVM/test/testsuite/openjdk/jdk8u/jdk/test/sun/management/jmxremote/bootstrap/RmiBootstrapTest.sh

TEST RESULT: Failed. Execution failed: exit code 20
--------------------------------------------------
Test results: failed: 1
Results written to /home/hedongbo/myprojects/testJDK/JVM/test/testsuite/openjdk/test_result-RmiBootstrapTest/jtwork-42

I think the reason for the error is in the following use case, the increment variable of the inner loop should be j
// jdk/test/sun/management/jmxremote/bootstrap/RmiBootstrapTest.java
 public void runok() {
        final String portStr = System.getProperty("rmi.port",null);
        final int port = portStr != null ?
                                Integer.parseInt(portStr) : basePort;
        final File[] conf = findConfigurationFilesOk();
        if ((conf == null)||(conf.length == 0))
            throw new RuntimeException("No configuration found");

        String errStr = null;
        for (int i=0;i<conf.length;i++) { // conf.length = 4
            for (int j = 0; j < PORT_TEST_LEN; i++) { // j should be here
                try {
                    errStr = testConfiguration(conf[i],port+testPort++); // ArrayIndexOutOfBoundsException is thrown when i = 4
                    break;
                } catch (BindException e) {
                    // port conflict; try another port
                }
            }
            if (errStr != null) {
                throw new RuntimeException(errStr);
            }
        }