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<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 - Null dereference loading Blink layout test fast/loader/unload-mutation-crash.html"
href="https://bugs.webkit.org/show_bug.cgi?id=149305">149305</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Null dereference loading Blink layout test fast/loader/unload-mutation-crash.html
</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>Keywords</th>
<td>BlinkMergeCandidate, HasReduction, NeedsRadar
</td>
</tr>
<tr>
<th>Severity</th>
<td>Normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P2
</td>
</tr>
<tr>
<th>Component</th>
<td>Page Loading
</td>
</tr>
<tr>
<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jhoneycutt@apple.com
</td>
</tr>
<tr>
<th>CC</th>
<td>webkit-bug-importer@group.apple.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=261441" name="attach_261441" title="crashing test">attachment 261441</a> <a href="attachment.cgi?id=261441&action=edit" title="crashing test">[details]</a></span>
crashing test
Null dereference loading Blink layout test fast/loader/unload-mutation-crash.html.
Stack trace:
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000008
Exception Note: EXC_CORPSE_NOTIFY
VM Regions Near 0x8:
-->
__TEXT 0000000103d82000-0000000103d84000 [ 8K] r-x/rwx SM=COW /Users/USER/*/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.WebContent.Development.xpc/Contents/MacOS/com.apple.WebKit.WebContent.Development
Application Specific Information:
CRASHING TEST: temp-tests/fast/loader/unload-mutation-crash.html
Global Trace Buffer (reverse chronological seconds):
48.357176 CFNetwork 0x00007fff88d43b97 Explicitly setting CF cookie storage singleton
48.357532 CFNetwork 0x00007fff88d8f211 Explicitly setting cookie storage singleton
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 com.apple.WebCore 0x000000010bcd7e8e WebCore::Document::recalcStyle(WebCore::Style::Change) + 46 (RefCounted.h:47)
1 com.apple.WebCore 0x000000010bcd933f WebCore::Document::createRenderTree() + 175 (Document.cpp:2192)
2 com.apple.WebCore 0x000000010bcd938b WebCore::Document::didBecomeCurrentDocumentInFrame() + 59 (Document.cpp:1710)
3 com.apple.WebCore 0x000000010be5eccc WebCore::Frame::setDocument(WTF::RefPtr<WebCore::Document>&&) + 108 (InspectorInstrumentation.h:285)
4 com.apple.WebCore 0x000000010bd1348e WebCore::DocumentWriter::begin(WebCore::URL const&, bool, WebCore::Document*) + 462 (StdLibExtras.h:366)
5 com.apple.WebCore 0x000000010bd131b3 WebCore::DocumentWriter::replaceDocument(WTF::String const&, WebCore::Document*) + 67 (RefPtr.h:71)
6 com.apple.WebCore 0x000000010c76d800 WebCore::ScriptController::executeIfJavaScriptURL(WebCore::URL const&, WebCore::ShouldReplaceDocumentIfJavaScriptURL) + 464 (RefCounted.h:99)
7 com.apple.WebCore 0x000000010c89f08f WebCore::SubframeLoader::requestFrame(WebCore::HTMLFrameOwnerElement&, WTF::String const&, WTF::AtomicString const&, WebCore::LockHistory, WebCore::LockBackForwardList) + 815 (SubframeLoader.cpp:92)
8 com.apple.WebCore 0x000000010bf2d4ab WebCore::HTMLFrameElementBase::openURL(WebCore::LockHistory, WebCore::LockBackForwardList) + 187 (HTMLFrameElementBase.cpp:91)
9 com.apple.WebCore 0x000000010bf2d7c6 WebCore::HTMLFrameElementBase::setLocation(WTF::String const&) + 166 (HTMLFrameElementBase.cpp:182)
10 com.apple.WebCore 0x000000010bf2d62e WebCore::HTMLFrameElementBase::parseAttribute(WebCore::QualifiedName const&, WTF::AtomicString const&) + 366 (StdLibExtras.h:366)
11 com.apple.WebCore 0x000000010bdb74c8 WebCore::Element::attributeChanged(WebCore::QualifiedName const&, WTF::AtomicString const&, WTF::AtomicString const&, WebCore::Element::AttributeModificationReason) + 712 (Document.h:942)
12 com.apple.WebCore 0x000000010bdbac0e WebCore::Element::didAddAttribute(WebCore::QualifiedName const&, WTF::AtomicString const&) + 46 (InspectorInstrumentation.h:285)
13 com.apple.WebCore 0x000000010bdbabcb WebCore::Element::addAttributeInternal(WebCore::QualifiedName const&, WTF::AtomicString const&, WebCore::Element::SynchronizationOfLazyAttribute) + 363 (Element.cpp:2034)
14 com.apple.WebCore 0x000000010c1dd65a WebCore::setJSHTMLIFrameElementSrc(JSC::ExecState*, JSC::JSObject*, long long, long long) + 410 (StdLibExtras.h:366)
15 com.apple.JavaScriptCore 0x000000010b3aae0c JSC::JSObject::put(JSC::JSCell*, JSC::ExecState*, JSC::PropertyName, JSC::JSValue, JSC::PutPropertySlot&) + 1468 (CustomGetterSetter.h:52)
16 com.apple.JavaScriptCore 0x000000010b444973 llint_slow_path_put_by_id + 531 (JSCJSValueInlines.h:751)
17 com.apple.JavaScriptCore 0x000000010b451ae5 llint_entry + 11294
18 com.apple.JavaScriptCore 0x000000010b45476f llint_entry + 22696
19 com.apple.JavaScriptCore 0x000000010b44ece4 vmEntryToJavaScript + 299
20 com.apple.JavaScriptCore 0x000000010b30f2d9 JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*) + 169 (JITCode.cpp:82)
21 com.apple.JavaScriptCore 0x000000010b2f5a10 JSC::Interpreter::execute(JSC::ProgramExecutable*, JSC::ExecState*, JSC::JSObject*) + 10448 (Interpreter.cpp:945)
22 com.apple.JavaScriptCore 0x000000010b0084c5 JSC::evaluate(JSC::ExecState*, JSC::SourceCode const&, JSC::JSValue, WTF::NakedPtr<JSC::Exception>&) + 469 (Completion.cpp:104)
23 com.apple.WebCore 0x000000010c76b8ec WebCore::ScriptController::evaluateInWorld(WebCore::ScriptSourceCode const&, WebCore::DOMWrapperWorld&) + 284 (JSMainThreadExecState.h:62)
24 com.apple.WebCore 0x000000010c76d5f0 WebCore::ScriptController::executeScript(WTF::String const&, bool) + 320 (Ref.h:55)
25 com.apple.WebCore 0x000000010c76d716 WebCore::ScriptController::executeIfJavaScriptURL(WebCore::URL const&, WebCore::ShouldReplaceDocumentIfJavaScriptURL) + 230 (StdLibExtras.h:366)
26 com.apple.WebCore 0x000000010c89f08f WebCore::SubframeLoader::requestFrame(WebCore::HTMLFrameOwnerElement&, WTF::String const&, WTF::AtomicString const&, WebCore::LockHistory, WebCore::LockBackForwardList) + 815 (SubframeLoader.cpp:92)
27 com.apple.WebCore 0x000000010bf2d4ab WebCore::HTMLFrameElementBase::openURL(WebCore::LockHistory, WebCore::LockBackForwardList) + 187 (HTMLFrameElementBase.cpp:91)
28 com.apple.WebCore 0x000000010bb835ec WebCore::ContainerNode::notifyChildInserted(WebCore::Node&, WebCore::ContainerNode::ChildChangeSource) + 348 (ContainerNode.cpp:341)
29 com.apple.WebCore 0x000000010bb8309e WebCore::ContainerNode::updateTreeAfterInsertion(WebCore::Node&) + 30 (ContainerNode.cpp:826)
30 com.apple.WebCore 0x000000010bb82ead WebCore::ContainerNode::appendChild(WTF::Ref<WebCore::Node>&&, int&) + 509 (ContainerNode.cpp:691)
31 com.apple.WebCore 0x000000010c4f1688 WebCore::Node::appendChild(WTF::PassRefPtr<WebCore::Node>, int&) + 56 (Node.cpp:479)
32 com.apple.WebCore 0x000000010c2941b9 WebCore::JSNode::appendChild(JSC::ExecState*) + 73 (JSNodeCustom.cpp:149)
33 ??? 0x0000361116001028 0 + 59447011446824
34 com.apple.JavaScriptCore 0x000000010b45476f llint_entry + 22696
35 com.apple.JavaScriptCore 0x000000010b45476f llint_entry + 22696
36 com.apple.JavaScriptCore 0x000000010b44ece4 vmEntryToJavaScript + 299
37 com.apple.JavaScriptCore 0x000000010b30f2d9 JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*) + 169 (JITCode.cpp:82)
38 com.apple.JavaScriptCore 0x000000010b2f5d12 JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 450 (Interpreter.cpp:1008)
39 com.apple.JavaScriptCore 0x000000010afc18b7 JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&) + 71 (MarkedBlock.h:241)
40 com.apple.WebCore 0x000000010c17cfa4 WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext*, WebCore::Event*) + 996 (JSMainThreadExecState.h:56)
41 com.apple.WebCore 0x000000010bde34db WebCore::EventTarget::fireEventListeners(WebCore::Event*, WebCore::EventTargetData*, WTF::Vector<WebCore::RegisteredEventListener, 1ul, WTF::CrashOnOverflow, 16ul>&) + 635 (InspectorInstrumentation.h:285)
42 com.apple.WebCore 0x000000010bde31a0 WebCore::EventTarget::fireEventListeners(WebCore::Event*) + 224 (EventTarget.cpp:208)
43 com.apple.WebCore 0x000000010bd6fbf4 WebCore::DOMWindow::dispatchEvent(WTF::PassRefPtr<WebCore::Event>, WTF::PassRefPtr<WebCore::EventTarget>) + 260 (DOMWindow.cpp:1900)
44 com.apple.WebCore 0x000000010bd7530b WebCore::DOMWindow::dispatchLoadEvent() + 347 (StdLibExtras.h:366)
45 com.apple.WebCore 0x000000010bcd8294 WebCore::Document::implicitClose() + 324 (Document.cpp:4077)
46 com.apple.WebCore 0x000000010be65003 WebCore::FrameLoader::checkCompleted() + 275 (FrameLoader.cpp:839)
47 com.apple.WebCore 0x000000010be6395b WebCore::FrameLoader::finishedParsing() + 123 (FrameLoader.cpp:760)
48 com.apple.WebCore 0x000000010bce3281 WebCore::Document::finishedParsing() + 417 (Frame.h:377)
49 com.apple.WebCore 0x000000010bf0fe05 WebCore::HTMLDocumentParser::prepareToStopParsing() + 165 (RefCounted.h:99)
50 com.apple.WebCore 0x000000010bd1369a WebCore::DocumentWriter::end() + 58 (StdLibExtras.h:366)
51 com.apple.WebCore 0x000000010bcfb9ec WebCore::DocumentLoader::finishedLoading(double) + 268 (ResourceErrorBase.h:42)
52 com.apple.WebCore 0x000000010bb2c179 WebCore::CachedResource::checkNotify() + 153 (CachedResourceClientWalker.h:51)
53 com.apple.WebCore 0x000000010bb28433 WebCore::CachedRawResource::finishLoading(WebCore::SharedBuffer*) + 227 (CachedRawResource.cpp:104)
54 com.apple.WebCore 0x000000010c8a3501 WebCore::SubresourceLoader::didFinishLoading(double) + 1153 (ResourceLoader.h:154)
55 com.apple.WebKit 0x000000010a3e998d WebKit::WebResourceLoader::didReceiveWebResourceLoaderMessage(IPC::Connection&, IPC::MessageDecoder&) + 561 (HandleMessage.h:16)
56 com.apple.WebKit 0x000000010a1c31f1 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::MessageDecoder, std::__1::default_delete<IPC::MessageDecoder> >) + 127 (memory:2636)
57 com.apple.WebKit 0x000000010a1c5b4a IPC::Connection::dispatchOneMessage() + 126 (memory:2656)
58 com.apple.JavaScriptCore 0x000000010b607b52 WTF::RunLoop::performWork() + 898 (functional:1793)
59 com.apple.JavaScriptCore 0x000000010b607d32 WTF::RunLoop::performWork(void*) + 34 (RunLoopCF.cpp:39)
60 com.apple.CoreFoundation 0x00007fff949e2c01 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
61 com.apple.CoreFoundation 0x00007fff949d4b1c __CFRunLoopDoSources0 + 556
62 com.apple.CoreFoundation 0x00007fff949d403f __CFRunLoopRun + 927
63 com.apple.CoreFoundation 0x00007fff949d3a38 CFRunLoopRunSpecific + 296
64 com.apple.HIToolbox 0x00007fff88e673bd RunCurrentEventLoopInMode + 235
65 com.apple.HIToolbox 0x00007fff88e67153 ReceiveNextEventCommon + 432
66 com.apple.HIToolbox 0x00007fff88e66f93 _BlockUntilNextEventMatchingListInModeWithFilter + 71
67 com.apple.AppKit 0x00007fff870b81e7 _DPSNextEvent + 1076
68 com.apple.AppKit 0x00007fff8748490d -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 454
69 com.apple.AppKit 0x00007fff870ae0b8 -[NSApplication run] + 682
70 com.apple.AppKit 0x00007fff87030396 NSApplicationMain + 1176
71 libxpc.dylib 0x00007fff8c70ff70 _xpc_objc_main + 793
72 libxpc.dylib 0x00007fff8c7116bf xpc_main + 494
73 com.apple.WebKit.WebContent.Development 0x0000000103d83424 main + 409 (XPCServiceMain.Development.mm:187)
74 libdyld.dylib 0x00007fff93aa15ad start + 1</pre>
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