8386085: Livelock in AbstractQueuedSyncronizer.cleanQueue() when multiple threads do tryAcquire() with a short timeout and no permits available

[kirill-shirokov]

Testing done:

• 8386085-BugReproducer2-27-linux-x64.log
• juc-tests-27-linux-x64.log
• juc-tests-27-macosx-aarch64.log
• juc-tests-27-windows-x64.log

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Progress

• Change must not contain extraneous whitespace
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• JDK-8386085 needs maintainer approval

Issue

• JDK-8386085: Livelock in AbstractQueuedSyncronizer.cleanQueue() when multiple threads do tryAcquire() with a short timeout and no permits available (Bug - P3)

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[bridgekeeper]

👋 Welcome back kshiroko! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

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[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

⚠️ @kirill-shirokov This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[mlbridge]

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• 00: Full (b9777833)

[AlanBateman]

I think Viktor plans to backport this to jdk27 while that release is in RDP1.

[kirill-shirokov]

@AlanBateman, oh, I see. I'm just trying to expedite the backports (especially 17). Goetz deferred some of the backports until there is a PR for jdk27 / 27u (openjdk/jdk25u-dev#624 (comment)), so it was quite easy for me to create 27 backports as well. I hope it will not create any disturbance to the process.