RFR: 8261391: ZGC crash - SEGV in RevokeOneBias::do_thread

[Erik Österlund]

On Mon, 15 Feb 2021 10:23:24 GMT, Robbin Ehn <rehn at openjdk.org> wrote:

> Handshakes may contain oop Handles from the requesting thread.
> A handshake may be executed by another thread than the requester.
> We must make sure any such Handle is safe to use by other threads before executing the handshake.
> This change-set adds SWS::start_process() for the requesting thread also (we already do this for the target JavaThread).
> 
> Passes t1-5

Looks good. Thanks for fixing!

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Marked as reviewed by eosterlund (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/2571