[Webkit-unassigned] [Bug 264111] New: [WebGPU] Buffer synchronization is implemented incorrectly leading to data races between the CPU and GPU

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=264111

            Bug ID: 264111
           Summary: [WebGPU] Buffer synchronization is implemented
                    incorrectly leading to data races between the CPU and
                    GPU
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGPU
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mwyrzykowski at apple.com

[WebGPU] Buffer synchronization is implemented incorrectly leading to data races between the CPU and GPU

Specifically, calling GPUCommandEncoder.copyXToBuffer() and then mapping the buffer contents returns the pointer, but the copy command may still be in flight.

This leads to data races

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