8327743: JVM crash in hotspot/share/runtime/javaThread.cpp - failed: held monitor count should be equal to jni: 0 != 1

[shipilev]

WIP.

Uncleanliness comes from JDK 21 not having JDK-8313882, so I had to rewrite the incoming hunks back to INT64_FORMAT and int64_t casts. Another uncleanliness is from not having JDK-8310906, which introduced pointer_delta_as_int.

I would probably wait for that to land, which would make this backport clean.

Additional testing:

• MacOS AArch64 server fastdebug, new regression tests fail without the fix, pass with it
• Linux x86_64 server fastdebug, all

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Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• JDK-8327743 needs maintainer approval
• Commit message must refer to an issue

Issue

• JDK-8327743: JVM crash in hotspot/share/runtime/javaThread.cpp - failed: held monitor count should be equal to jni: 0 != 1 (Bug - P3)

Reviewing

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Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u-dev.git pull/523/head:pull/523
$ git checkout pull/523

Update a local copy of the PR:
$ git checkout pull/523
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/523/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 523

View PR using the GUI difftool:
$ git pr show -t 523

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Download this PR as a diff file:
https://git.openjdk.org/jdk21u-dev/pull/523.diff

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[openjdk]

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