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      <base href="https://bugs.webkit.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - ASSERTION FAILED: canvas()-&gt;securityOrigin()-&gt;toString() == cachedImage.origin()-&gt;toString()"
   href="https://bugs.webkit.org/show_bug.cgi?id=163242">163242</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>ASSERTION FAILED: canvas()-&gt;securityOrigin()-&gt;toString() == cachedImage.origin()-&gt;toString()
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>New Bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>ryanhaddad&#64;apple.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Encountered on El Capitan Debug WK2 with LayoutTest http/tests/security/canvas-remote-read-data-url-image.html

<a href="https://build.webkit.org/results/Apple%20El%20Capitan%20Debug%20WK1%20(Tests)/r206999%20(8941)/results.html">https://build.webkit.org/results/Apple%20El%20Capitan%20Debug%20WK1%20(Tests)/r206999%20(8941)/results.html</a>

ASSERTION FAILED: canvas()-&gt;securityOrigin()-&gt;toString() == cachedImage.origin()-&gt;toString()
/Volumes/Data/slave/elcapitan-debug/build/Source/WebCore/html/canvas/CanvasRenderingContext.cpp(72) : bool WebCore::CanvasRenderingContext::wouldTaintOrigin(const WebCore::HTMLImageElement *)
1   0x101db6790 WTFCrash
2   0x10720c6c4 WebCore::CanvasRenderingContext::wouldTaintOrigin(WebCore::HTMLImageElement const*)
3   0x10721cd8f void WebCore::CanvasRenderingContext::checkOrigin&lt;WebCore::HTMLImageElement&gt;(WebCore::HTMLImageElement const*)
4   0x1072140b8 WebCore::CanvasRenderingContext2D::drawImage(WebCore::HTMLImageElement&amp;, WebCore::FloatRect const&amp;, WebCore::FloatRect const&amp;, WebCore::CompositeOperator const&amp;, WebCore::BlendMode const&amp;, int&amp;)
5   0x1072134fc WebCore::CanvasRenderingContext2D::drawImage(WebCore::HTMLImageElement&amp;, WebCore::FloatRect const&amp;, WebCore::FloatRect const&amp;, int&amp;)
6   0x107213465 WebCore::CanvasRenderingContext2D::drawImage(WebCore::HTMLImageElement&amp;, float, float, float, float, int&amp;)
7   0x10804ea69 WebCore::jsCanvasRenderingContext2DPrototypeFunctionDrawImage2(JSC::ExecState*)
8   0x10803ceec WebCore::jsCanvasRenderingContext2DPrototypeFunctionDrawImage(JSC::ExecState*)
9   0x2b3f63a01028
10  0x10198d5a4 llint_entry
11  0x1019860be vmEntryToJavaScript
12  0x1017677dc JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*)
13  0x1016e503f JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&amp;, JSC::JSValue, JSC::ArgList const&amp;)
14  0x100f32b9e JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&amp;, JSC::JSValue, JSC::ArgList const&amp;)
15  0x100f32c79 JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&amp;, JSC::JSValue, JSC::ArgList const&amp;, WTF::NakedPtr&lt;JSC::Exception&gt;&amp;)
16  0x100f32ebb JSC::profiledCall(JSC::ExecState*, JSC::ProfilingReason, JSC::JSValue, JSC::CallType, JSC::CallData const&amp;, JSC::JSValue, JSC::ArgList const&amp;, WTF::NakedPtr&lt;JSC::Exception&gt;&amp;)
17  0x10802e5fb WebCore::JSMainThreadExecState::profiledCall(JSC::ExecState*, JSC::ProfilingReason, JSC::JSValue, JSC::CallType, JSC::CallData const&amp;, JSC::JSValue, JSC::ArgList const&amp;, WTF::NakedPtr&lt;JSC::Exception&gt;&amp;)
18  0x1082bdac4 WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext*, WebCore::Event*)
19  0x10786ca83 WebCore::EventTarget::fireEventListeners(WebCore::Event&amp;, WTF::Vector&lt;WTF::RefPtr&lt;WebCore::RegisteredEventListener&gt;, 1ul, WTF::CrashOnOverflow, 16ul&gt;)
20  0x10786c648 WebCore::EventTarget::fireEventListeners(WebCore::Event&amp;)
21  0x108c45984 WebCore::Node::handleLocalEvents(WebCore::Event&amp;)
22  0x10783b991 WebCore::EventContext::handleLocalEvents(WebCore::Event&amp;) const
23  0x10783c7bc WebCore::dispatchEventInDOM(WebCore::Event&amp;, WebCore::EventPath const&amp;, WebCore::WindowEventContext&amp;)
24  0x10783c4c8 WebCore::EventDispatcher::dispatchEvent(WebCore::Node*, WebCore::Event&amp;)
25  0x108c459dd WebCore::Node::dispatchEvent(WebCore::Event&amp;)
26  0x107c18921 WebCore::HTMLImageLoader::dispatchLoadEvent()
27  0x107e27835 WebCore::ImageLoader::dispatchPendingLoadEvent()
28  0x107e27756 WebCore::ImageLoader::dispatchPendingEvent(WebCore::EventSender&lt;WebCore::ImageLoader&gt;*)
29  0x107e27eea WebCore::EventSender&lt;WebCore::ImageLoader&gt;::dispatchPendingEvents()
30  0x107e27951 WebCore::ImageLoader::dispatchPendingLoadEvents()
31  0x10768dc77 WebCore::Document::implicitClose()</pre>
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