8387206: G1: Code root verification crashes because of stale table scanner

[tschatzl]

Hi all,

This pull request contains a backport of commit 22313f85 from the openjdk/jdk repository.

The commit being backported was authored by Thomas Schatzl on 29 Jun 2026 and was reviewed by Ivan Walulya.

Thanks!

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Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8387206: G1: Code root verification crashes because of stale table scanner (Bug - P3)

Reviewers

• Albert Mingkun Yang (@albertnetymk - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/31711/head:pull/31711
$ git checkout pull/31711

Update a local copy of the PR:
$ git checkout pull/31711
$ git pull https://git.openjdk.org/jdk.git pull/31711/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 31711

View PR using the GUI difftool:
$ git pr show -t 31711

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/31711.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back tschatzl! A progress list of the required criteria for merging this PR into jdk27 will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[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:

8387206: G1: Code root verification crashes because of stale table scanner

Reviewed-by: ayang

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 no new commits pushed to the jdk27 branch. If another commit should be pushed before you perform the /integrate command, your PR will be automatically rebased. If you prefer to avoid any potential automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the jdk27 branch, type /integrate in a new comment.

[openjdk]

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

[openjdk]

@tschatzl The following label will be automatically applied to this pull request:

• hotspot-gc

When this pull request is ready to be reviewed, an "RFR" email will be sent to the corresponding mailing list. If you would like to change these labels, use the /label pull request command.

[mlbridge]

Webrevs

• 00: Full (7a61ee04)