[Webkit-unassigned] [Bug 267388] New: [GPU Process] Possible null dereferencing when destroying the cached RenderingResources of a WebPage

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=267388

            Bug ID: 267388
           Summary: [GPU Process] Possible null dereferencing when
                    destroying the cached RenderingResources of a WebPage
           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: sabouhallawa at apple.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

The destructor of WebPage calls RemoteResourceCacheProxy::clearRenderingResourceMap() via other calls. Because RemoteResourceCacheProxy stores the cached RenderingResources in a HashMap of WeakPtrs, we need to ensure the WeakPtr of the RenderingResource is not null before using it.

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