[Webkit-unassigned] [Bug 253927] New: ReleaseSerializedImageBuffer doesn't release the underlying IOSurface

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=253927

            Bug ID: 253927
           Summary: ReleaseSerializedImageBuffer doesn't release the
                    underlying IOSurface
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mattwoodrow at apple.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

We're adding a read reference in the RemoteSerializedImageBufferProxy constructor, and we never have any reads happen if we destroy the RemoteSerializedImageBufferProxy without transferring to an ImageBuffer.

This shouldn't happen often, but can happen if you draw to an OffscreenCanvas, call `commit()`, and then draw again quickly (not waiting for rAF).

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