Bug ID: JDK-8307478 Implementation of Prepare to Restrict The Dynamic Loading of Agents

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JDK 21
21 b26Fixed

Hi [~alanb] here is the new issue : https://bugs.openjdk.org/browse/JDK-8309549 .
06-06-2023
[~mbaesken] It might be better to create a new bug rather adding comments here. From the AssertionFailedError and the stack trace then I suspect the issue is that loading the same shared library twice (with dlopen) is given a different address so it's not recognized as the same agent library, hence a second warning is printed when the test expects only one warning.
06-06-2023
The added test com/sun/tools/attach/warnings/DynamicLoadWarningTest.java always fails on AIX with the output : ----------System.err:(294/28579)---------- STARTED DynamicLoadWarningTest::testLoadJavaAgent 'testLoadJavaAgent()' SUCCESSFUL DynamicLoadWarningTest::testLoadJavaAgent 'testLoadJavaAgent()' STARTED DynamicLoadWarningTest::testLoadOneJvmtiAgent '[1] DynamicLoadWarningTest$$Lambda/0x000000040020bd88@600d90bb' org.opentest4j.AssertionFailedError: expected: <1> but was: <2> at org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:151) at org.junit.jupiter.api.AssertionFailureBuilder.buildAndThrow(AssertionFailureBuilder.java:132) at org.junit.jupiter.api.AssertEquals.failNotEqual(AssertEquals.java:197) at org.junit.jupiter.api.AssertEquals.assertEquals(AssertEquals.java:150) at org.junit.jupiter.api.AssertEquals.assertEquals(AssertEquals.java:145) at org.junit.jupiter.api.Assertions.assertEquals(Assertions.java:528) at DynamicLoadWarningTest$AppRunner.stderrShouldContain(DynamicLoadWarningTest.java:298) at DynamicLoadWarningTest.testLoadOneJvmtiAgent(DynamicLoadWarningTest.java:125) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) at java.base/java.lang.reflect.Method.invoke(Method.java:580) Maybe something is missing on AIX ?
06-06-2023
Changeset: 5bd2af26 Author: Alan Bateman <alanb@openjdk.org> Date: 2023-06-02 05:57:01 +0000 URL: https://git.openjdk.org/jdk/commit/5bd2af26e66a863edc670229444b3282ba639563
02-06-2023
A pull request was submitted for review. URL: https://git.openjdk.org/jdk/pull/13899 Date: 2023-05-10 11:12:49 +0000
11-05-2023

CSR :	JDK-8307479 - Implementation of Prepare to Restrict The Dynamic Loading of Agents
Relates :	JDK-8306275 - JEP 451: Prepare to Disallow the Dynamic Loading of Agents
Relates :	JDK-8309549 - com/sun/tools/attach/warnings/DynamicLoadWarningTest.java fails on AIX
Relates :	JDK-8325530 - Dynamic Attach returns 0 even when library fails to load