RFR: 8355556: JVM crash because archived method handle intrinsics are not restored
Ioi Lam
iklam at openjdk.org
Fri Jun 13 16:15:00 UTC 2025
On Thu, 12 Jun 2025 09:25:50 GMT, Andrew Dinn <adinn at openjdk.org> wrote:
>> `AOTLinkedClassBulkLoader::finish_loading_javabase_classes()` can execute Java bytecodes (from `<clinit>`). If one of these bytecodes is an AOT-resolved `invokedynamic`, it may be dispatched using an archived method handle intrinsic. Therefore, we should call `SystemDictionary::restore_archived_method_handle_intrinsics()` first to make sure that the method handle intrinsics are ready to be used.
>>
>> In the JDK mainline, we only execute a very limited set of Java methods which happens to not include any `invokedynamic` bytecodes. That's why this bug has not been found in the mainline.
>>
>> However, in the Leyden repo, we have other optimizations, such as archived ProtectionDomains, which will cause `invokedynamic` bytecodes to be executed inside `AOTLinkedClassBulkLoader::finish_loading_javabase_classes()`.
>>
>> Since this is a potential issue even for the JDK mainline, we should fix it (and also backport to JDK 25).
>>
>> Thanks to @iwanowww for providing the fix!
>
> Looks good.
Thanks @adinn @iwanowww @shipilev for the review
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PR Comment: https://git.openjdk.org/jdk/pull/25766#issuecomment-2970861716
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