8283555: G1: Concurrent mark accesses uninitialized BOT of closed archive regions

[tschatzl]

Please review this backport of JDK-8283555 G1: Concurrent mark accesses uninitialized BOT of closed archive regions which removes a potential crash.

Applies cleanly.

Testing: gha, jdk19 ci

Thanks,
Thomas

---

Progress

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Issue

• JDK-8283555: G1: Concurrent mark accesses uninitialized BOT of closed archive regions

Reviewing

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Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk18u pull/54/head:pull/54
$ git checkout pull/54

Update a local copy of the PR:
$ git checkout pull/54
$ git pull https://git.openjdk.java.net/jdk18u pull/54/head

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$ git pr checkout 54

View PR using the GUI difftool:
$ git pr show -t 54

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Download this PR as a diff file:
https://git.openjdk.java.net/jdk18u/pull/54.diff

[bridgekeeper]

👋 Welcome back tschatzl! 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.

[openjdk]

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

[openjdk]

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

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

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

8283555: G1: Concurrent mark accesses uninitialized BOT of closed archive regions

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 3 new commits pushed to the master branch:

• b5ce23b: 8278065: Refactor subclassAudits to use ClassValue
• 27fbc08: 8280041: Retry loop issues in java.io.ClassCache
• 76e25e6: 8277072: ObjectStreamClass caches keep ClassLoaders alive

Please see this link for an up-to-date comparison between the source branch of this pull request and the master branch.
As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

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[mlbridge]

Webrevs

• 00: Full (b2e7d8c9)

[tschatzl]

/integrate

[openjdk]

Going to push as commit 9f39b4b.
Since your change was applied there have been 9 commits pushed to the master branch:

• 4b0818c: 8278381: [GCC 11] Address::make_raw() does not initialize rspec
• 3d289c1: 8281771: Crash in java_lang_invoke_MethodType::print_signature
• e642530: 8281274: deal with ActiveProcessorCount in os::Linux::print_container_info
• 9327634: 8278794: Infinite loop in DeflaterOutputStream.finish()
• bc630f8: 8278549: UNIX sun/font coding misses SUSE distro detection on recent distro SUSE 15
• 1ab6f93: 8283350: (tz) Update Timezone Data to 2022a
• b5ce23b: 8278065: Refactor subclassAudits to use ClassValue
• 27fbc08: 8280041: Retry loop issues in java.io.ClassCache
• 76e25e6: 8277072: ObjectStreamClass caches keep ClassLoaders alive

Your commit was automatically rebased without conflicts.

[openjdk]

@tschatzl Pushed as commit 9f39b4b.

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