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8373120: Virtual thread stuck in BLOCKED state#111

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shipilev wants to merge 1 commit intoopenjdk:masterfrom
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8373120: Virtual thread stuck in BLOCKED state#111
shipilev wants to merge 1 commit intoopenjdk:masterfrom
openjdk-bots:backport-shipilev-26aab3cc-master

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@shipilev shipilev commented Mar 13, 2026

Fixes another Virtual Thread issue that manifests in JDK 26.

Additional testing:

  • New regression test passes; 1000x iterations
  • Linux x86_64 server fastdebug, jdk_loom hotspot_loom, 10x
  • Linux x86_64 server fastdebug, java/lang/Thread/virtual/stress/, 10x

Progress

  • Change must not contain extraneous whitespace
  • JDK-8373120 needs maintainer approval
  • Commit message must refer to an issue

Issue

  • JDK-8373120: Virtual thread stuck in BLOCKED state (Bug - P3 - Approved)

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Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk26u.git pull/111/head:pull/111
$ git checkout pull/111

Update a local copy of the PR:
$ git checkout pull/111
$ git pull https://git.openjdk.org/jdk26u.git pull/111/head

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Checkout this PR locally:
$ git pr checkout 111

View PR using the GUI difftool:
$ git pr show -t 111

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Download this PR as a diff file:
https://git.openjdk.org/jdk26u/pull/111.diff

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bridgekeeper bot commented Mar 13, 2026

👋 Welcome back shade! 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.

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openjdk bot commented Mar 13, 2026

@shipilev 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:

8373120: Virtual thread stuck in BLOCKED state

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 5 new commits pushed to 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.

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

@openjdk openjdk bot changed the title Backport 26aab3cccdbcf98c329c8d67093eb2dbf4b164e5 8373120: Virtual thread stuck in BLOCKED state Mar 13, 2026
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openjdk bot commented Mar 13, 2026

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

@openjdk openjdk bot added backport Port of a pull request already in a different code base clean Identical backport; no merge resolution required labels Mar 13, 2026
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openjdk bot commented Mar 13, 2026

⚠️ @shipilev 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.

@openjdk openjdk bot added the rfr Pull request is ready for review label Mar 13, 2026
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mlbridge bot commented Mar 13, 2026

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/approval request Fixes another Virtual Threads issue. This JDK 26 backport is inclusive backport on the way to 25u. Applies cleanly. Stress tests pass. Was in mainline for 1.5 months without bugtail.

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openjdk bot commented Mar 13, 2026

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8373120: The approval request has been created successfully.

@openjdk openjdk bot added approval Requires approval; will be removed when approval is received ready Pull request is ready to be integrated and removed approval Requires approval; will be removed when approval is received labels Mar 13, 2026
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Push approval granted.

/integrate

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openjdk bot commented Mar 16, 2026

Going to push as commit 0ce90c2.
Since your change was applied there have been 6 commits pushed to the master branch:

Your commit was automatically rebased without conflicts.

@openjdk openjdk bot added the integrated Pull request has been integrated label Mar 16, 2026
@openjdk openjdk bot closed this Mar 16, 2026
@openjdk openjdk bot removed ready Pull request is ready to be integrated rfr Pull request is ready for review labels Mar 16, 2026
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openjdk bot commented Mar 16, 2026

@shipilev Pushed as commit 0ce90c2.

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

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