The WhiteBox.lockCompilation method is broken under UseJVMCICompiler as shown by the serviceability/dcmd/compiler/CompilerQueueTest.java test failing:

test CompilerQueueTest.jmx(): failure
java.lang.AssertionError: expected [false] but found [true]
    at org.testng.Assert.fail(Assert.java:99)
    at org.testng.Assert.failNotEquals(Assert.java:1037)
    at org.testng.Assert.assertEqualsImpl(Assert.java:140)
    at org.testng.Assert.assertEquals(Assert.java:122)
    at org.testng.Assert.assertEquals(Assert.java:819)
    at org.testng.Assert.assertEquals(Assert.java:829)
    at CompilerQueueTest.run(CompilerQueueTest.java:107)
    at CompilerQueueTest.jmx(CompilerQueueTest.java:144)

There is a similar failure in compiler/whitebox/LockCompilationTest.java:

java.lang.RuntimeException: private int compiler.whitebox.SimpleTestCaseHelper.method() must be in queue: expected true, was false
    at jdk.test.lib.Asserts.fail(Asserts.java:594)
    at jdk.test.lib.Asserts.assertTrue(Asserts.java:486)
    at compiler.whitebox.LockCompilationTest.test(LockCompilationTest.java:73)
    at compiler.whitebox.CompilerWhiteBoxTest.runTest(CompilerWhiteBoxTest.java:168)
    at compiler.whitebox.CompilerWhiteBoxTest.main(CompilerWhiteBoxTest.java:131)
    at compiler.whitebox.LockCompilationTest.main(LockCompilationTest.java:49)
    at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
    at java.base/java.lang.reflect.Method.invoke(Method.java:578)
    at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
    at java.base/java.lang.Thread.run(Thread.java:1583)
java.lang.RuntimeException: private int compiler.whitebox.SimpleTestCaseHelper.method() must be in queue: expected true, was false
    at jdk.test.lib.Asserts.fail(Asserts.java:594)
    at jdk.test.lib.Asserts.assertTrue(Asserts.java:486)
    at compiler.whitebox.LockCompilationTest.test(LockCompilationTest.java:73)
    at compiler.whitebox.CompilerWhiteBoxTest.runTest(CompilerWhiteBoxTest.java:168)
    at compiler.whitebox.CompilerWhiteBoxTest.main(CompilerWhiteBoxTest.java:131)
    at compiler.whitebox.LockCompilationTest.main(LockCompilationTest.java:49)
    at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
    at java.base/java.lang.reflect.Method.invoke(Method.java:578)
    at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
    at java.base/java.lang.Thread.run(Thread.java:1583)