[Webkit-unassigned] [Bug 59671] New: Race condition with scrollbar animations and closing a page can cause a crash in WebCore::FrameView::setVisibleScrollerThumbRect + 15

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=59671

           Summary: Race condition with scrollbar animations and closing a
                    page can cause a crash in
                    WebCore::FrameView::setVisibleScrollerThumbRect + 15
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: bdakin at apple.com


I have not been able to catch it in a debugger, but there are numerous reports indicating a crash in WebCore::FrameView::setVisibleScrollerThumbRect(). Looks like we are de-referencing page. 

Patch forthcoming.

<rdar://problem/9329253>

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