[Webkit-unassigned] [Bug 163905] New: ASSERTION FAILED: m_parsedStyleSheetCache->isInMemoryCache()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=163905

            Bug ID: 163905
           Summary: ASSERTION FAILED:
                    m_parsedStyleSheetCache->isInMemoryCache()
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ryanhaddad at apple.com

Flaky assertion failure seen with http/tests/misc/acid2.html

ASSERTION FAILED: m_parsedStyleSheetCache->isInMemoryCache()
/Volumes/Data/slave/elcapitan-debug/build/Source/WebCore/loader/cache/CachedCSSStyleSheet.cpp(167) : PassRefPtr<WebCore::StyleSheetContents> WebCore::CachedCSSStyleSheet::restoreParsedStyleSheet(const WebCore::CSSParserContext &, WebCore::CachePolicy)
1   0x10fe69310 WTFCrash
2   0x1153778fd WebCore::CachedCSSStyleSheet::restoreParsedStyleSheet(WebCore::CSSParserContext const&, WebCore::CachePolicy)
3   0x115e261f5 WebCore::HTMLLinkElement::setCSSStyleSheet(WTF::String const&, WebCore::URL const&, WTF::String const&, WebCore::CachedCSSStyleSheet const*)
4   0x115e265c7 non-virtual thunk to WebCore::HTMLLinkElement::setCSSStyleSheet(WTF::String const&, WebCore::URL const&, WTF::String const&, WebCore::CachedCSSStyleSheet const*)
5   0x1153770ea WebCore::CachedCSSStyleSheet::didAddClient(WebCore::CachedResourceClient&)
6   0x11538e430 WebCore::CachedResource::addClient(WebCore::CachedResourceClient&)
7   0x115e25541 WebCore::HTMLLinkElement::process()
8   0x115e25e2c WebCore::HTMLLinkElement::insertedInto(WebCore::ContainerNode&)
9   0x1154af9c8 WebCore::notifyNodeInsertedIntoDocument(WebCore::ContainerNode&, WebCore::Node&, WTF::Vector<WTF::Ref<WebCore::Node>, 11ul, WTF::CrashOnOverflow, 16ul>&)
10  0x1154afdf0 WebCore::notifyChildNodeInserted(WebCore::ContainerNode&, WebCore::Node&, WTF::Vector<WTF::Ref<WebCore::Node>, 11ul, WTF::CrashOnOverflow, 16ul>&)
11  0x1154a09a6 WebCore::ContainerNode::notifyChildInserted(WebCore::Node&, WebCore::ContainerNode::ChildChangeSource)
12  0x11549fa2c WebCore::ContainerNode::parserAppendChild(WebCore::Node&)
13  0x115d94a63 WebCore::insert(WebCore::HTMLConstructionSiteTask&)
14  0x115d946ee WebCore::executeInsertTask(WebCore::HTMLConstructionSiteTask&)
15  0x115d90ed2 WebCore::executeTask(WebCore::HTMLConstructionSiteTask&)
16  0x115d90e66 WebCore::HTMLConstructionSite::executeQueuedTasks()
17  0x115ee4f0e WebCore::HTMLTreeBuilder::constructTree(WebCore::AtomicHTMLToken&)
18  0x115dc45e3 WebCore::HTMLDocumentParser::constructTreeFromHTMLToken(WebCore::HTMLTokenizer::TokenPtr&)
19  0x115dc44ef WebCore::HTMLDocumentParser::pumpTokenizerLoop(WebCore::HTMLDocumentParser::SynchronousMode, bool, WebCore::PumpSession&)
20  0x115dc31ed WebCore::HTMLDocumentParser::pumpTokenizer(WebCore::HTMLDocumentParser::SynchronousMode)
21  0x115dc2dee WebCore::HTMLDocumentParser::pumpTokenizerIfPossible(WebCore::HTMLDocumentParser::SynchronousMode)
22  0x115dc4fd3 WebCore::HTMLDocumentParser::append(WTF::RefPtr<WTF::StringImpl>&&)
23  0x1157ff2f5 WebCore::DecodedDataDocumentParser::appendBytes(WebCore::DocumentWriter&, char const*, unsigned long)
24  0x115941e93 WebCore::DocumentWriter::addData(char const*, unsigned long)
25  0x1158fd01e WebCore::DocumentLoader::commitData(char const*, unsigned long)
26  0x11ec903fd -[WebFrame(WebInternal) _commitData:]
27  0x11ecce610 -[WebHTMLRepresentation receivedData:withDataSource:]
28  0x11ec6cbea -[WebDataSource(WebInternal) _receivedData:]
29  0x11eca09d7 WebFrameLoaderClient::committedLoad(WebCore::DocumentLoader*, char const*, int)
30  0x1158ffb30 WebCore::DocumentLoader::commitLoad(char const*, int)
31  0x1158ffa56 WebCore::DocumentLoader::dataReceived(char const*, int)

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