<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>150211</bug_id>
          
          <creation_ts>2015-10-15 17:05:02 -0700</creation_ts>
          <short_desc>Null dereference loading Blink layout test fast/css/background-repeat-null-y-crash.html</short_desc>
          <delta_ts>2015-11-02 21:36:31 -0800</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>CSS</component>
          <version>WebKit Local Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>BlinkMergeCandidate, HasReduction, InRadar</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Jon Honeycutt">jhoneycutt</reporter>
          <assigned_to name="Jiewen Tan">jiewen_tan</assigned_to>
          <cc>commit-queue</cc>
    
    <cc>jiewen_tan</cc>
    
    <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1133694</commentid>
    <comment_count>0</comment_count>
      <attachid>263228</attachid>
    <who name="Jon Honeycutt">jhoneycutt</who>
    <bug_when>2015-10-15 17:05:02 -0700</bug_when>
    <thetext>Created attachment 263228
crashing test

Null dereference loading Blink layout test fast/css/background-repeat-null-y-crash.html.

Stack trace:

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_ACCESS (SIGABRT)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000004

VM Regions Near 0x4:
--&gt; 
    __TEXT                 000000010ba77000-000000010bb11000 [  616K] r-x/rwx SM=COW  /Users/USER/*

Application Specific Information:
CRASHING TEST: blink-tests-that-are-unknown/fast/css/background-repeat-null-y-crash.html
================================================================
==22030==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000004 (pc 0x0001116375e9 bp 0x7fff54181c70 sp 0x7fff54181c70 T0)
    #0 0x1116375e8 in WebCore::CSSValue::isValueList() const CSSValue.h:66
    #1 0x1134376f1 in WebCore::StyleProperties::getLayeredShorthandValue(WebCore::StylePropertyShorthand const&amp;) const StyleProperties.cpp:426
    #2 0x113436aa3 in WebCore::StyleProperties::getPropertyValue(WebCore::CSSPropertyID) const StyleProperties.cpp:130
    #3 0x112cd55f3 in WebCore::PropertySetCSSStyleDeclaration::getPropertyValueInternal(WebCore::CSSPropertyID) PropertySetCSSStyleDeclaration.cpp:274
    #4 0x11226fdbb in WebCore::getPropertyValueFallback(JSC::ExecState*, WebCore::JSCSSStyleDeclaration*, unsigned int) JSCSSStyleDeclarationCustom.cpp:281
    #5 0x11226e180 in WebCore::cssPropertyGetter(JSC::ExecState*, WebCore::JSCSSStyleDeclaration*, unsigned int) JSCSSStyleDeclarationCustom.cpp:307
    #6 0x11226d3f4 in WebCore::JSCSSStyleDeclaration::getOwnPropertySlotDelegate(JSC::ExecState*, JSC::PropertyName, JSC::PropertySlot&amp;) JSCSSStyleDeclarationCustom.cpp:319
    #7 0x112269b3b in WebCore::JSCSSStyleDeclaration::getOwnPropertySlot(JSC::JSObject*, JSC::ExecState*, JSC::PropertyName, JSC::PropertySlot&amp;) JSCSSStyleDeclaration.cpp:195
    #8 0x10c88d969 in llint_slow_path_get_by_id JSObject.h:1123
    #9 0x10c8a35ff in llint_entry (/Users/jhoneycutt/src/OpenSource/WebKitBuild2/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore+0xab15ff)
    #10 0x10c8a0a0a in vmEntryToJavaScript (/Users/jhoneycutt/src/OpenSource/WebKitBuild2/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore+0xaaea0a)
    #11 0x10c60207d in JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*) JITCode.cpp:80
    #12 0x10c5becc6 in JSC::Interpreter::execute(JSC::ProgramExecutable*, JSC::ExecState*, JSC::JSObject*) Interpreter.cpp:961
    #13 0x10bf81689 in JSC::evaluate(JSC::ExecState*, JSC::SourceCode const&amp;, JSC::JSValue, WTF::NakedPtr&lt;JSC::Exception&gt;&amp;) Completion.cpp:104
    #14 0x1125763ad in WebCore::JSMainThreadExecState::evaluate(JSC::ExecState*, JSC::SourceCode const&amp;, JSC::JSValue, WTF::NakedPtr&lt;JSC::Exception&gt;&amp;) JSMainThreadExecState.h:62
    #15 0x1131b2410 in WebCore::ScriptController::evaluateInWorld(WebCore::ScriptSourceCode const&amp;, WebCore::DOMWrapperWorld&amp;) ScriptController.cpp:164
    #16 0x1131b2618 in WebCore::ScriptController::evaluate(WebCore::ScriptSourceCode const&amp;) ScriptController.cpp:180
    #17 0x1131c4586 in WebCore::ScriptElement::executeScript(WebCore::ScriptSourceCode const&amp;) ScriptElement.cpp:309
    #18 0x1131c1e6a in WebCore::ScriptElement::prepareScript(WTF::TextPosition const&amp;, WebCore::ScriptElement::LegacyTypeSupport) ScriptElement.cpp:242
    #19 0x111eb79cb in WebCore::HTMLScriptRunner::runScript(WebCore::Element*, WTF::TextPosition const&amp;) HTMLScriptRunner.cpp:308
    #20 0x111eb7705 in WebCore::HTMLScriptRunner::execute(WTF::PassRefPtr&lt;WebCore::Element&gt;, WTF::TextPosition const&amp;) HTMLScriptRunner.cpp:177
    #21 0x111de2a6f in WebCore::HTMLDocumentParser::runScriptsForPausedTreeBuilder() HTMLDocumentParser.cpp:195
    #22 0x111de2ce3 in WebCore::HTMLDocumentParser::canTakeNextToken(WebCore::HTMLDocumentParser::SynchronousMode, WebCore::PumpSession&amp;) HTMLDocumentParser.cpp:213
    #23 0x111de22a8 in WebCore::HTMLDocumentParser::pumpTokenizer(WebCore::HTMLDocumentParser::SynchronousMode) HTMLDocumentParser.cpp:259
    #24 0x111de3c9d in WebCore::HTMLDocumentParser::resumeParsingAfterScriptExecution() HTMLDocumentParser.cpp:496
    #25 0x111de3f61 in WebCore::HTMLDocumentParser::notifyFinished(WebCore::CachedResource*) HTMLDocumentParser.cpp:536
    #26 0x111405ca7 in WebCore::CachedResource::checkNotify() CachedResource.cpp:297
    #27 0x11348e588 in WebCore::SubresourceLoader::didFinishLoading(double) SubresourceLoader.cpp:372
    #28 0x7fff8c4a3850 in __65-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]_block_invoke (/System/Library/Frameworks/CFNetwork.framework/Versions/A/CFNetwork+0x2e850)
    #29 0x7fff8c4a3765 in -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:] (/System/Library/Frameworks/CFNetwork.framework/Versions/A/CFNetwork+0x2e765)
    #30 0x7fff8c4a366a in -[NSURLConnectionInternal _withActiveConnectionAndDelegate:] (/System/Library/Frameworks/CFNetwork.framework/Versions/A/CFNetwork+0x2e66a)
    #31 0x7fff8c4a8491 in ___ZN27URLConnectionClient_Classic26_delegate_didFinishLoadingEU13block_pointerFvvE_block_invoke (/System/Library/Frameworks/CFNetwork.framework/Versions/A/CFNetwork+0x33491)
    #32 0x7fff8c63c976 in ___ZN27URLConnectionClient_Classic18_withDelegateAsyncEPKcU13block_pointerFvP16_CFURLConnectionPK33CFURLConnectionClientCurrent_VMaxE_block_invoke_2 (/System/Library/Frameworks/CFNetwork.framework/Versions/A/CFNetwork+0x1c7976)
    #33 0x7fff9a99c3c2 in _dispatch_client_callout (/usr/lib/system/libdispatch.dylib+0x23c2)
    #34 0x7fff9a9aa0bd in _dispatch_block_invoke (/usr/lib/system/libdispatch.dylib+0x100bd)
    #35 0x7fff8c4a3527 in RunloopBlockContext::_invoke_block(void const*, void*) (/System/Library/Frameworks/CFNetwork.framework/Versions/A/CFNetwork+0x2e527)
    #36 0x7fff96f5ce63 in CFArrayApplyFunction (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0x4ce63)
    #37 0x7fff8c4a3420 in RunloopBlockContext::perform() (/System/Library/Frameworks/CFNetwork.framework/Versions/A/CFNetwork+0x2e420)
    #38 0x7fff8c4a32c1 in MultiplexerSource::perform() (/System/Library/Frameworks/CFNetwork.framework/Versions/A/CFNetwork+0x2e2c1)
    #39 0x7fff8c4a30e3 in MultiplexerSource::_perform(void*) (/System/Library/Frameworks/CFNetwork.framework/Versions/A/CFNetwork+0x2e0e3)
    #40 0x7fff96fba8b0 in __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0xaa8b0)
    #41 0x7fff96f9a0ab in __CFRunLoopDoSources0 (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0x8a0ab)
    #42 0x7fff96f995ce in __CFRunLoopRun (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0x895ce)
    #43 0x7fff96f98fc7 in CFRunLoopRunSpecific (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0x88fc7)
    #44 0x10ba9998d in runTest(std::__1::basic_string&lt;char, std::__1::char_traits&lt;char&gt;, std::__1::allocator&lt;char&gt; &gt; const&amp;) DumpRenderTree.mm:2030
    #45 0x10ba98f39 in runTestingServerLoop() DumpRenderTree.mm:1180
    #46 0x10ba98267 in dumpRenderTree(int, char const**) DumpRenderTree.mm:1288
    #47 0x10ba9a2b1 in DumpRenderTreeMain(int, char const**) DumpRenderTree.mm:1418
    #48 0x7fff931e95ac in start (/usr/lib/system/libdyld.dylib+0x35ac)
    #49 0x1  (&lt;unknown module&gt;)</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1133695</commentid>
    <comment_count>1</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2015-10-15 17:06:23 -0700</bug_when>
    <thetext>&lt;rdar://problem/23137321&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1138781</commentid>
    <comment_count>2</comment_count>
      <attachid>264648</attachid>
    <who name="Jiewen Tan">jiewen_tan</who>
    <bug_when>2015-11-02 17:28:15 -0800</bug_when>
    <thetext>Created attachment 264648
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1138838</commentid>
    <comment_count>3</comment_count>
      <attachid>264648</attachid>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2015-11-02 21:36:27 -0800</bug_when>
    <thetext>Comment on attachment 264648
Patch

Clearing flags on attachment: 264648

Committed r191938: &lt;http://trac.webkit.org/changeset/191938&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1138839</commentid>
    <comment_count>4</comment_count>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2015-11-02 21:36:31 -0800</bug_when>
    <thetext>All reviewed patches have been landed.  Closing bug.</thetext>
  </long_desc>
      
          <attachment
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            <attachid>263228</attachid>
            <date>2015-10-15 17:05:02 -0700</date>
            <delta_ts>2015-10-15 17:05:02 -0700</delta_ts>
            <desc>crashing test</desc>
            <filename>background-repeat-null-y-crash.html</filename>
            <type>text/html</type>
            <size>242</size>
            <attacher name="Jon Honeycutt">jhoneycutt</attacher>
            
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            <attachid>264648</attachid>
            <date>2015-11-02 17:28:15 -0800</date>
            <delta_ts>2015-11-02 21:36:27 -0800</delta_ts>
            <desc>Patch</desc>
            <filename>bug-150211-20151102172720.patch</filename>
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          </attachment>
      

    </bug>

</bugzilla>