RFR: 8361912: ThreadsListHandle::cv_internal_thread_to_JavaThread does not deal with a virtual thread's carrier thread [v2]

[Serguei Spitsyn]

On Thu, 24 Jul 2025 15:45:02 GMT, Serguei Spitsyn <sspitsyn at openjdk.org> wrote:

>> Note that `java_thread` may already be null so we don't get to execute line 836.
>
> Thanks, David. The potential issue I'm still concerned about is that a subsequent handshaking can also observe the JavaThread (and virtual thread as well) in a VTMS transition when there is no protection with a `VTMSTransitionDisabler`.

> Note that java_thread may already be null so we don't get to execute line 836.

Right. I guess, this answers my comment about the line 839.

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PR Review Comment: https://git.openjdk.org/jdk/pull/26287#discussion_r2229142376