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<head>
<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 - Null dereference loading Blink layout test svg/custom/use-href-attr-removal-crash.html"
href="https://bugs.webkit.org/show_bug.cgi?id=149315">149315</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Null dereference loading Blink layout test svg/custom/use-href-attr-removal-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>SVG
</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, zimmermann@kde.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=261452" name="attach_261452" title="crashing test">attachment 261452</a> <a href="attachment.cgi?id=261452&action=edit" title="crashing test">[details]</a></span>
crashing test
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000058
Exception Note: EXC_CORPSE_NOTIFY
VM Regions Near 0x58:
-->
__TEXT 0000000104aa5000-0000000104aa7000 [ 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/svg/custom/use-href-attr-removal-crash.html
Global Trace Buffer (reverse chronological seconds):
42.604613 CFNetwork 0x00007fff88d43b97 Explicitly setting CF cookie storage singleton
42.604905 CFNetwork 0x00007fff88d8f211 Explicitly setting cookie storage singleton
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 com.apple.WebCore 0x000000010cb15d7d WebCore::Element::getAttribute(WebCore::QualifiedName const&) const + 13 (RefPtr.h:61)
1 com.apple.WebCore 0x000000010d6c7dbd WebCore::SVGUseElement::transferSizeAttributesToTargetClone(WebCore::SVGElement&) const + 365 (RefPtr.h:44)
2 com.apple.WebCore 0x000000010d6c81eb WebCore::SVGUseElement::svgAttributeChanged(WebCore::QualifiedName const&) + 187 (Node.h:448)
3 com.apple.WebCore 0x000000010cb1cc0e WebCore::Element::didAddAttribute(WebCore::QualifiedName const&, WTF::AtomicString const&) + 46 (InspectorInstrumentation.h:285)
4 com.apple.WebCore 0x000000010cb1cbcb WebCore::Element::addAttributeInternal(WebCore::QualifiedName const&, WTF::AtomicString const&, WebCore::Element::SynchronizationOfLazyAttribute) + 363 (Element.cpp:2034)
5 com.apple.WebCore 0x000000010cb19096 WebCore::Element::setAttribute(WTF::AtomicString const&, WTF::AtomicString const&, int&) + 678 (StdLibExtras.h:366)
6 com.apple.WebCore 0x000000010ceccda8 WebCore::jsElementPrototypeFunctionSetAttribute(JSC::ExecState*) + 504 (StdLibExtras.h:366)
7 ??? 0x0000263c79401028 0 + 42041174134824
8 com.apple.JavaScriptCore 0x000000010c1b676f llint_entry + 22696
9 com.apple.JavaScriptCore 0x000000010c1b0ce4 vmEntryToJavaScript + 299
10 com.apple.JavaScriptCore 0x000000010c0712d9 JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*) + 169 (JITCode.cpp:82)
11 com.apple.JavaScriptCore 0x000000010c057d12 JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 450 (Interpreter.cpp:1008)
12 com.apple.JavaScriptCore 0x000000010bd238b7 JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&) + 71 (MarkedBlock.h:241)
13 com.apple.WebCore 0x000000010cedefa4 WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext*, WebCore::Event*) + 996 (JSMainThreadExecState.h:56)
14 com.apple.WebCore 0x000000010cb454db WebCore::EventTarget::fireEventListeners(WebCore::Event*, WebCore::EventTargetData*, WTF::Vector<WebCore::RegisteredEventListener, 1ul, WTF::CrashOnOverflow, 16ul>&) + 635 (InspectorInstrumentation.h:285)
15 com.apple.WebCore 0x000000010cb451a0 WebCore::EventTarget::fireEventListeners(WebCore::Event*) + 224 (EventTarget.cpp:208)
16 com.apple.WebCore 0x000000010cad1bf4 WebCore::DOMWindow::dispatchEvent(WTF::PassRefPtr<WebCore::Event>, WTF::PassRefPtr<WebCore::EventTarget>) + 260 (DOMWindow.cpp:1900)
17 com.apple.WebCore 0x000000010cad730b WebCore::DOMWindow::dispatchLoadEvent() + 347 (StdLibExtras.h:366)
18 com.apple.WebCore 0x000000010ca3a294 WebCore::Document::implicitClose() + 324 (Document.cpp:4077)
19 com.apple.WebCore 0x000000010cbc7003 WebCore::FrameLoader::checkCompleted() + 275 (FrameLoader.cpp:839)
20 com.apple.WebCore 0x000000010cbc595b WebCore::FrameLoader::finishedParsing() + 123 (FrameLoader.cpp:760)
21 com.apple.WebCore 0x000000010ca45281 WebCore::Document::finishedParsing() + 417 (Frame.h:377)
22 com.apple.WebCore 0x000000010cc71e05 WebCore::HTMLDocumentParser::prepareToStopParsing() + 165 (RefCounted.h:99)
23 com.apple.WebCore 0x000000010ca7569a WebCore::DocumentWriter::end() + 58 (StdLibExtras.h:366)
24 com.apple.WebCore 0x000000010ca5d9ec WebCore::DocumentLoader::finishedLoading(double) + 268 (ResourceErrorBase.h:42)
25 com.apple.WebCore 0x000000010c88e179 WebCore::CachedResource::checkNotify() + 153 (CachedResourceClientWalker.h:51)
26 com.apple.WebCore 0x000000010c88a433 WebCore::CachedRawResource::finishLoading(WebCore::SharedBuffer*) + 227 (CachedRawResource.cpp:104)
27 com.apple.WebCore 0x000000010d605501 WebCore::SubresourceLoader::didFinishLoading(double) + 1153 (ResourceLoader.h:154)
28 com.apple.WebKit 0x000000010b14b98d WebKit::WebResourceLoader::didReceiveWebResourceLoaderMessage(IPC::Connection&, IPC::MessageDecoder&) + 561 (HandleMessage.h:16)
29 com.apple.WebKit 0x000000010af251f1 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::MessageDecoder, std::__1::default_delete<IPC::MessageDecoder> >) + 127 (memory:2636)
30 com.apple.WebKit 0x000000010af27b4a IPC::Connection::dispatchOneMessage() + 126 (memory:2656)
31 com.apple.JavaScriptCore 0x000000010c369985 WTF::RunLoop::performWork() + 437 (functional:1742)
32 com.apple.JavaScriptCore 0x000000010c369d32 WTF::RunLoop::performWork(void*) + 34 (RunLoopCF.cpp:39)
33 com.apple.CoreFoundation 0x00007fff949e2c01 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
34 com.apple.CoreFoundation 0x00007fff949d4b1c __CFRunLoopDoSources0 + 556
35 com.apple.CoreFoundation 0x00007fff949d403f __CFRunLoopRun + 927
36 com.apple.CoreFoundation 0x00007fff949d3a38 CFRunLoopRunSpecific + 296
37 com.apple.HIToolbox 0x00007fff88e673bd RunCurrentEventLoopInMode + 235
38 com.apple.HIToolbox 0x00007fff88e67153 ReceiveNextEventCommon + 432
39 com.apple.HIToolbox 0x00007fff88e66f93 _BlockUntilNextEventMatchingListInModeWithFilter + 71
40 com.apple.AppKit 0x00007fff870b81e7 _DPSNextEvent + 1076
41 com.apple.AppKit 0x00007fff8748490d -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 454
42 com.apple.AppKit 0x00007fff870ae0b8 -[NSApplication run] + 682
43 com.apple.AppKit 0x00007fff87030396 NSApplicationMain + 1176
44 libxpc.dylib 0x00007fff8c70ff70 _xpc_objc_main + 793
45 libxpc.dylib 0x00007fff8c7116bf xpc_main + 494
46 com.apple.WebKit.WebContent.Development 0x0000000104aa6424 main + 409 (XPCServiceMain.Development.mm:187)
47 libdyld.dylib 0x00007fff93aa15ad start + 1</pre>
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