<html>
    <head>
      <base href="https://bugs.webkit.org/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - REGRESSION: Multiple workers-related LayoutTests crashing in debug"
   href="https://bugs.webkit.org/show_bug.cgi?id=169729">169729</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>REGRESSION: Multiple workers-related LayoutTests crashing in debug
          </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>JavaScriptCore
          </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>Thread 12 Crashed:: WebCore: Worker
0   ???                               0x000056e5bf205ba4 0 + 95544754068388
1   com.apple.JavaScriptCore          0x000000012023a435 llint_entry + 29857
2   com.apple.JavaScriptCore          0x0000000120232d7e vmEntryToJavaScript + 334
3   com.apple.JavaScriptCore          0x000000012003238e JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*) + 350 (JITCode.cpp:81)
4   com.apple.JavaScriptCore          0x000000011ffe7922 JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&amp;, JSC::JSValue, JSC::ArgList const&amp;) + 1330 (Interpreter.cpp:947)
5   com.apple.JavaScriptCore          0x000000011f7eb918 JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&amp;, JSC::JSValue, JSC::ArgList const&amp;) + 184 (CallData.cpp:39)
6   com.apple.JavaScriptCore          0x000000011f7eba29 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;) + 201 (CallData.cpp:46)
7   com.apple.JavaScriptCore          0x000000011f7ebcbd 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;) + 125 (CallData.cpp:65)
8   com.apple.WebCore                 0x00000001159c3f73 WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext*, WebCore::Event*) + 1987 (JSEventListener.cpp:156)
9   com.apple.WebCore                 0x0000000114e6b496 WebCore::EventTarget::fireEventListeners(WebCore::Event&amp;, WTF::Vector&lt;WTF::RefPtr&lt;WebCore::RegisteredEventListener&gt;, 1ul, WTF::CrashOnOverflow, 16ul&gt;) + 742 (EventTarget.cpp:258)
10  com.apple.WebCore                 0x0000000114e6b05e WebCore::EventTarget::fireEventListeners(WebCore::Event&amp;) + 318 (EventTarget.cpp:201)
11  com.apple.WebCore                 0x0000000114e6aef9 WebCore::EventTarget::dispatchEvent(WebCore::Event&amp;) + 233 (EventTarget.cpp:158)
12  com.apple.WebCore                 0x00000001172e6d06 WebCore::WorkerMessagingProxy::postMessageToWorkerGlobalScope(WTF::RefPtr&lt;WebCore::SerializedScriptValue&gt;&amp;&amp;, std::__1::unique_ptr&lt;WTF::Vector&lt;std::__1::unique_ptr&lt;WebCore::MessagePortChannel, std::__1::default_delete&lt;WebCore::MessagePortChannel&gt; &gt;, 1ul, WTF::CrashOnOverflow, 16ul&gt;, std::__1::default_delete&lt;WTF::Vector&lt;std::__1::unique_ptr&lt;WebCore::MessagePortChannel, std::__1::default_delete&lt;WebCore::MessagePortChannel&gt; &gt;, 1ul, WTF::CrashOnOverflow, 16ul&gt; &gt; &gt;)::$_1::operator()(WebCore::ScriptExecutionContext&amp;) + 294 (WorkerMessagingProxy.cpp:119)
13  com.apple.WebCore                 0x00000001172e6a24 WTF::Function&lt;void (WebCore::ScriptExecutionContext&amp;)&gt;::CallableWrapper&lt;WebCore::WorkerMessagingProxy::postMessageToWorkerGlobalScope(WTF::RefPtr&lt;WebCore::SerializedScriptValue&gt;&amp;&amp;, std::__1::unique_ptr&lt;WTF::Vector&lt;std::__1::unique_ptr&lt;WebCore::MessagePortChannel, std::__1::default_delete&lt;WebCore::MessagePortChannel&gt; &gt;, 1ul, WTF::CrashOnOverflow, 16ul&gt;, std::__1::default_delete&lt;WTF::Vector&lt;std::__1::unique_ptr&lt;WebCore::MessagePortChannel, std::__1::default_delete&lt;WebCore::MessagePortChannel&gt; &gt;, 1ul, WTF::CrashOnOverflow, 16ul&gt; &gt; &gt;)::$_1&gt;::call(WebCore::ScriptExecutionContext&amp;) + 52 (Function.h:89)
14  com.apple.WebCore                 0x0000000114ca2611 WTF::Function&lt;void (WebCore::ScriptExecutionContext&amp;)&gt;::operator()(WebCore::ScriptExecutionContext&amp;) const + 113 (Function.h:50)
15  com.apple.WebCore                 0x0000000114c8db4d WebCore::ScriptExecutionContext::Task::performTask(WebCore::ScriptExecutionContext&amp;) + 29 (ScriptExecutionContext.h:165)
16  com.apple.WebCore                 0x00000001172ec2f9 WebCore::WorkerRunLoop::Task::performTask(WebCore::WorkerRunLoop const&amp;, WebCore::WorkerGlobalScope*) + 105 (WorkerRunLoop.cpp:244)
17  com.apple.WebCore                 0x00000001172eb43e WebCore::WorkerRunLoop::runInMode(WebCore::WorkerGlobalScope*, WebCore::ModePredicate const&amp;, WebCore::WorkerRunLoop::WaitMode) + 1214 (WorkerRunLoop.cpp:191)
18  com.apple.WebCore                 0x00000001172eaee6 WebCore::WorkerRunLoop::run(WebCore::WorkerGlobalScope*) + 86 (WorkerRunLoop.cpp:137)
19  com.apple.WebCore                 0x00000001172f42b3 WebCore::WorkerThread::runEventLoop() + 51 (WorkerThread.cpp:231)
20  com.apple.WebCore                 0x0000000114c014d8 WebCore::DedicatedWorkerThread::runEventLoop() + 88 (DedicatedWorkerThread.cpp:61)
21  com.apple.WebCore                 0x00000001172f401d WebCore::WorkerThread::workerThread() + 1389 (WorkerThread.cpp:196)
22  com.apple.WebCore                 0x00000001172f3aa5 WebCore::WorkerThread::workerThreadStart(void*) + 21 (WorkerThread.cpp:150)
23  com.apple.JavaScriptCore          0x00000001206dbb39 WTF::createThread(void (*)(void*), void*, char const*)::$_0::operator()() const + 25 (Threading.cpp:109)
24  com.apple.JavaScriptCore          0x00000001206dbb0d void std::__1::__invoke_void_return_wrapper&lt;void&gt;::__call&lt;WTF::createThread(void (*)(void*), void*, char const*)::$_0&amp;&gt;(WTF::createThread(void (*)(void*), void*, char const*)::$_0&amp;&amp;&amp;) + 45 (__functional_base:469)
25  com.apple.JavaScriptCore          0x00000001206dbab9 std::__1::__function::__func&lt;WTF::createThread(void (*)(void*), void*, char const*)::$_0, std::__1::allocator&lt;WTF::createThread(void (*)(void*), void*, char const*)::$_0&gt;, void ()&gt;::operator()() + 41 (functional:1437)
26  com.apple.JavaScriptCore          0x000000011fc2922a std::__1::function&lt;void ()&gt;::operator()() const + 26 (functional:1817)
27  com.apple.JavaScriptCore          0x00000001206da547 WTF::threadEntryPoint(void*) + 151 (Threading.cpp:92)
28  com.apple.JavaScriptCore          0x00000001206dc121 WTF::wtfThreadEntryPoint(void*) + 289 (ThreadingPthreads.cpp:168)
29  libsystem_pthread.dylib           0x00007fffc6d59aab _pthread_body + 180
30  libsystem_pthread.dylib           0x00007fffc6d599f7 _pthread_start + 286
31  libsystem_pthread.dylib           0x00007fffc6d591fd thread_start + 13


<a href="https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&amp;tests=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fdom%2Finterfaces.worker.html">https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&amp;tests=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fdom%2Finterfaces.worker.html</a>

<a href="https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&amp;tests=fast%2Fworkers%2Fworker-context-gc.html">https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&amp;tests=fast%2Fworkers%2Fworker-context-gc.html</a>

<a href="https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&amp;tests=fast%2Fworkers%2Fself-hasOwnProperty.html">https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&amp;tests=fast%2Fworkers%2Fself-hasOwnProperty.html</a>

<a href="https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&amp;tests=fast%2Fworkers%2Ftermination-early.html">https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&amp;tests=fast%2Fworkers%2Ftermination-early.html</a>

<a href="https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&amp;tests=fast%2Fworkers%2Fworker-terminate.html">https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&amp;tests=fast%2Fworkers%2Fworker-terminate.html</a></pre>
        </div>
      </p>
      <hr>
      <span>You are receiving this mail because:</span>
      
      <ul>
          <li>You are the assignee for the bug.</li>
      </ul>
    </body>
</html>