RFR: 8340401: DcmdMBeanPermissionsTest.java and SystemDumpMapTest.java fail with assert(_stack_base != nullptr) failed: Sanity check [v2]

[Simon Tooke]

On Wed, 13 Nov 2024 13:48:12 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> [JDK-8342482](https://bugs.openjdk.org/browse/JDK-8342482) didn't work out.
>
>> [JDK-8342482](https://bugs.openjdk.org/browse/JDK-8342482) didn't work out.
> 
> Thank you for putting the work into this and documenting the result. A negative result is still a result.

@tstuefe I have created a branch with my proposed fix, with a more robust vma_touches_thread_stack() using the new Thread::stack_base_or_null()  method.  It's at [this branch](https://github.com/stooke/jdk/tree/pr_windows_system_dump_fixes2)  I will merge it back here if you approve of the changes.

Should I un-problemlist the tests in this PR, or should that be a separate PR?

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PR Comment: https://git.openjdk.org/jdk/pull/21091#issuecomment-2532668845