8382166: [AOT Cache] CRC was not checked on Code Region

[Delawen]

Hi folks,

This pull request contains a backport of commit 3dcd3653 from the openjdk/jdk repository.

The commit being backported was authored by me (with a cherry pick of Ioi's test suggestion) on 21 Apr 2026 and was reviewed by Vladimir Kozlov, Ashutosh Mehra, Ioi Lam and Andrew Dinn.

While other regions check the CRC when loading the cache, the code cache region does not check it. This may bring issues with corrupted (or tainted) caches that load corrupted (or malicious) code into memory.

On this PR, we add a CRC check that cleans up memory if it fails.

Thanks!

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Progress

• Change must not contain extraneous whitespace
• JDK-8382166 needs maintainer approval
• Commit message must refer to an issue

Issue

• JDK-8382166: [AOT Cache] CRC was not checked on Code Region (Bug - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk25u-dev.git pull/488/head:pull/488
$ git checkout pull/488

Update a local copy of the PR:
$ git checkout pull/488
$ git pull https://git.openjdk.org/jdk25u-dev.git pull/488/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 488

View PR using the GUI difftool:
$ git pr show -t 488

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk25u-dev/pull/488.diff

[bridgekeeper]

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[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

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

[Delawen]

I will need to adapt the tests for the backports.