RFR: 8337331: crash: pinned virtual thread will lead to jvm crash when running with the javaagent option [v11]

[Jaikiran Pai]

On Mon, 5 Aug 2024 10:34:56 GMT, Jaikiran Pai <jpai at openjdk.org> wrote:

>> Jiawei Tang has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   change the format of the testcase file
>
> test/hotspot/jtreg/serviceability/jvmti/vthread/TestPinCaseWithCFLH/TestPinCaseWithCFLH.java line 37:
> 
>> 35:  * @modules java.base/java.lang:+open
>> 36:  * @compile TestPinCaseWithCFLH.java
>> 37:  * @run driver jdk.test.lib.util.JavaAgentBuilder
> 
> Hello @jia-wei-tang, does adding an additional `@build jdk.test.lib.thread.VThreadPinner` line before the `@run` line help fix the `NoClassDefFoundError` you note in your comment?

Hello @jia-wei-tang, I see that a `@build jdk.test.lib.util.JavaAgentBuilder` was added in the latest update to the PR. Did that help solve the NoClassDefFoundError you were running into when running those tests? I find it surprising that this specific class is required in the `@build` declaration, since that class itself is part of the `@run` directive.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20373#discussion_r1704897105