RFR: 8343129: Disable unstable check of ThreadsListHandle.sanity_vm ThreadList values

[David Holmes]

On Mon, 28 Oct 2024 06:20:39 GMT, SendaoYan <syan at openjdk.org> wrote:

> Hi all,
> We have observed `ThreadsListHandle.sanity_vm failed with unequal ThreadList values` several times on linux-x64 and linux-aarch64, by jdk17u/jdk21u/jdk24 etc.
> Before the root cause of the test failure has been fixed, should we disable the unstable check of ThreadsListHandle.sanity_vm ThreadList values, to make less of CI noisy.
> 
> Additional testing:
> 
> - [x] release build and run the `gtest/GTestWrapper.java` on linux-x64
> - [x] fastdebug build and run the `gtest/GTestWrapper.java` on linux-x64
> - [x] slowdebug build and run the `gtest/GTestWrapper.java` on linux-x64

test/hotspot/gtest/runtime/test_ThreadsListHandle.cpp line 175:

> 173:           << "thr->_threads_hazard_ptr must match tlh2.list()";
> 174:     // Disable unstable check of ThreadsListHandle.sanity_vm ThreadList values,
> 175:     // util the root cause of test failure(JDK-8315141) has been fixed

Suggestion:

    // until the root cause of test failure(JDK-8315141) has been fixed

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PR Review Comment: https://git.openjdk.org/jdk/pull/21734#discussion_r1843219949