8330275: Crash in XMark::follow_array

[ashu-mehra]

Backport of JDK-8330275 to fix crash in ZGC.

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8330275 needs maintainer approval

Issue

• JDK-8330275: Crash in XMark::follow_array (Bug - P2 - Approved)

Reviewers

• Thomas Stuefe (@tstuefe - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u-dev.git pull/612/head:pull/612
$ git checkout pull/612

Update a local copy of the PR:
$ git checkout pull/612
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/612/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 612

View PR using the GUI difftool:
$ git pr show -t 612

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u-dev/pull/612.diff

Webrev

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[bridgekeeper]

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[openjdk]

@ashu-mehra This change now passes all automated pre-integration checks.

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After integration, the commit message for the final commit will be:

8330275: Crash in XMark::follow_array

Reviewed-by: stuefe

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[openjdk]

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

[openjdk]

⚠️ @ashu-mehra 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]

Webrevs

• 00: Full (9ce458da)

[ashu-mehra]

/approval request This fixes a bug in ZGC that can result in crash when running with huge heap size. It only affects aarch64.

[openjdk]

@ashu-mehra
8330275: The approval request has been created successfully.

[tstuefe]

+1

[jerboaa]

Please create a backport for jdk22u as well.

[jerboaa]

GHA failure on mac os x (on x86_64) seems infra related.

[ashu-mehra]

@jerboaa @tstuefe thank you for approving it.

[ashu-mehra]

/integrate

[openjdk]

@ashu-mehra
Your change (at version 9ce458d) is now ready to be sponsored by a Committer.

[jerboaa]

/sponsor

[openjdk]

Going to push as commit 60402f8.

[openjdk]

@jerboaa @ashu-mehra Pushed as commit 60402f8.

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