RFR: 8343321: Bad verify in LockStack::oops_do()
Coleen Phillimore
coleenp at openjdk.org
Fri Nov 1 19:12:27 UTC 2024
On Thu, 31 Oct 2024 12:46:26 GMT, Joel Sikström <jsikstro at openjdk.org> wrote:
> Hello,
>
> Verifying the lock stack's consistency before calling do_oop on the content in the lock stack is unnecessary and may result in a crash. The call to do_oop will (potentially) only change oops already stored in the lock stack, not add or remove anything. If two (or more) oops were equal before doing do_oop on all oops, they will still be the equivalent after the operation. Hence, the consistensy check only needs to happen once, either before or after do_oops, and doing it before might crash, so I propose we remove it.
>
> See exact crash details in the linked issue.
Makes sense.
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Marked as reviewed by coleenp (Reviewer).
PR Review: https://git.openjdk.org/jdk/pull/21806#pullrequestreview-2410729669
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