8329961: Buffer overflow in os::Linux::kernel_version

[jerboaa]

Follow-up fix to JDK-8321075 which is in 22.0.2. Should be low risk and avoids the potential buffer-overrun.

---

Progress

• JDK-8329961 needs maintainer approval
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8329961: Buffer overflow in os::Linux::kernel_version (Bug - P4 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk22u.git pull/141/head:pull/141
$ git checkout pull/141

Update a local copy of the PR:
$ git checkout pull/141
$ git pull https://git.openjdk.org/jdk22u.git pull/141/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 141

View PR using the GUI difftool:
$ git pr show -t 141

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk22u/pull/141.diff

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[bridgekeeper]

👋 Welcome back sgehwolf! 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]

@jerboaa 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:

8329961: Buffer overflow in os::Linux::kernel_version

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 20 new commits pushed to the master branch:

• 829d047: Merge
• 8ba20c7: 8327391: Add SipHash attribution file
• e351052: 8325313: Header format error in TestIntrinsicBailOut after JDK-8317299
• 1d7689d: Merge
• ae46fb7: Merge
• bf87bb7: Merge
• 733b837: 8322122: Enhance generation of addresses
• a7ac67c: Merge
• 0082d4c: Merge
• 8ac813a: 8315708: Enhance HTTP/2 client usage
• ... and 10 more: https://git.openjdk.org/jdk22u/compare/3d99b8fc2145456608fa90e823254c52b6c5302b...master

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.

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

[openjdk]

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

[mlbridge]

Webrevs

• 00: Full (583beb4a)

[bridgekeeper]

@jerboaa This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply add a new comment to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!

[jerboaa]

/integrate

[openjdk]

Going to push as commit f5ce46f.
Since your change was applied there have been 70 commits pushed to the master branch:

• 0f3b3fa: 8331942: On Linux aarch64, CDS archives should be using 64K alignment by default
• c3e9084: 8329862: libjli GetApplicationHome cleanups and enhance jli tracing
• bb3651f: 8331167: UBSan enabled build fails in adlc on macOS
• 5550682: 8330615: avoid signed integer overflows in zip_util.c readCen / hashN
• dd5581c: 8331331: :tier1 target explanation in doc/testing.md is incorrect
• 2cb2e6b: 8325255: jdk.internal.util.ReferencedKeySet::add using wrong test
• cbfaf28: 8329663: hs_err file event log entry for thread adding/removing should print current thread
• 61792bc: 8331344: No compiler replay file with CompilerCommand MemLimit
• 9b3187f: 8330027: Identity hashes of archived objects must be based on a reproducible random seed
• 9486b7c: 8324243: Compilation failures in java.desktop module with gcc 14
• ... and 60 more: https://git.openjdk.org/jdk22u/compare/3d99b8fc2145456608fa90e823254c52b6c5302b...master

Your commit was automatically rebased without conflicts.

[openjdk]

@jerboaa Pushed as commit f5ce46f.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.