http://trac.webkit.org/changeset/122621 broke Chrome's about:gpu page. The page comes up blank, rather than containing some initial content which is then expanded as the GPU process gathers and provides information. Unfortunately, there was a simultaneous bad V8 roll which causes assertion failures when visiting this page in a top of tree debug build. However, one can either manually roll back V8 to r11956 or (probably) run with a release build to see the effect. I'm marking this P1 because it's broken some of QA's tests, and may also indicate incorrect invalidation which could be affecting other web pages.
Do you have a reduction for this?
Sorry, I don't, at least not yet. I only just finished a multi-hour triage to get it to this point. Can you please try to investigate it without one?
(In reply to comment #2) > Sorry, I don't, at least not yet. I only just finished a multi-hour triage to get it to this point. Can you please try to investigate it without one? There have been at least two known regressions with reductions so I'll work on those two first. I've already fixed one of them today and will be working on the other one tonight or tomorrow morning. Hopefully fixing those two will resolve this one as well.
Fixed in http://trac.webkit.org/changeset/122930.