[Webkit-unassigned] [Bug 27465] New: CSS on site locks up WebKit with 100% CPU

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=27465

           Summary: CSS on site locks up WebKit with 100% CPU
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
               URL: http://mashable.com/2009/07/16/ie6-must-die/
        OS/Version: Mac OS X 10.5
            Status: NEW
          Keywords: InChromiumBugs
          Severity: Major
          Priority: P1
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jon at chromium.org


Repo steps:

1.  Open http://mashable.com/2009/07/16/ie6-must-die/

Expected:
   Site Opens

Actual:
    CPU goes to 100%
    Nothing renders

>From Chromium bug report:

Comment 3 by iposva at chromium.org, Today (74 minutes ago)
On my Mac I ran Shark on Safari and got the following functions as top of the
profile:
13.0%    WebCore   
WebCore::CSSStyleSelector::SelectorChecker::checkSelector(...)
10.8%    WebCore   
WebCore::CSSStyleSelector::SelectorChecker::checkOneSelector(...)
2.6%    WebCore    WebCore::RenderLayer::paintLayer(...)

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