RFR: 8314225: SIGSEGV in JavaThread::is_lock_owned [v10]

[David Holmes]

On Wed, 8 May 2024 08:30:30 GMT, Kevin Walls <kevinw at openjdk.org> wrote:

>> Removal of JavaThread's MonitorChunks member.  This held lock information during deoptimization, but access to it is unnecessary for anything other than the deoptimization itself.
>> 
>> Access to it in is_lock_owned() was racy, and caused rare crashes.
>
> Kevin Walls has updated the pull request incrementally with one additional commit since the last revision:
> 
>   null nullptr oops

Looks good! Thanks for such a detailed and thorough investigation of this issue @kevinjwalls  and @dean-long .

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Marked as reviewed by dholmes (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/18940#pullrequestreview-2047381821