[Webkit-unassigned] [Bug 229401] New: Experimental GPU Process: Canvas Rendering

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=229401

            Bug ID: 229401
           Summary: Experimental GPU Process: Canvas Rendering
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: All
                OS: macOS 10.15
            Status: NEW
          Severity: Major
          Priority: P2
         Component: Canvas
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: wayne.langman at gmail.com
                CC: dino at apple.com

Created attachment 436175

  --> https://bugs.webkit.org/attachment.cgi?id=436175&action=review

Code and Screenshots

I've managed to replicate a hard crash using Safari Release 130 on MacOS and iOS when configuring a custom loaded font with the 'small-caps' property.

Running the attached code sample will cause Safari to stall, restart and display the This webpage was reloaded because a problem occurred." warning.

I've also included a screenshot of the crash as detected in Instruments which shows a "Exceeded timeout while waiting for flush in remote rendering backend." error.

This issue goes away when disabled the experimental "GPU Process: Canvas Rendering" flag.

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