RFR: 8316401: sun/tools/jhsdb/JStackStressTest.java failed with "InternalError: We should have found a thread that owns the anonymous lock"

[Chris Plummer]

On Tue, 26 Sep 2023 20:41:33 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> I'm not seeing that this code has much impact on the failure rate. I've tried changing the order and also have tried adding a nanosleep(). Always fails at about the same rate.
>
> Switching the order did not fix the problem.
> 
> Even if we end up resolving that this is just something that can happen when SA inspects things, I'd prefer to understand how this can arise. I guess I need to look into how the SA tries to find the owner.

Yeah, I also haven't seen a good explanation for why this is happening yet. I'll also look into SA, but I don't understand the hotspot code it is trying to emulate that well so not sure how useful I'll be.

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PR Review Comment: https://git.openjdk.org/jdk/pull/15907#discussion_r1337832556