[Webkit-unassigned] [Bug 73325] New: Crash due to m_resource being released while SubresourceLoader::didFinishLoading is executing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=73325

           Summary: Crash due to m_resource being released while
                    SubresourceLoader::didFinishLoading is executing
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Windows 7
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: marshall at chromium.org
                CC: abarth at webkit.org


If a load is canceled m_resource might be released in the call hierarchy originating from m_resource->data(). This causes the subsequent call to m_reosurce->finish() to crash. This problem can be fixed by protecting m_resource in SubresourceLoader::didFinishLoading() before calling any of the m_resource methods:

CachedResourceHandle<CachedResource> protect_res(m_resource);

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