[Webkit-unassigned] [Bug 106137] New: WebDocumentLoaderMac-related leaks seen on Leaks bot

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=106137

           Summary: WebDocumentLoaderMac-related leaks seen on Leaks bot
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Page Loading
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: eric at webkit.org
                CC: rniwa at webkit.org


WebDocumentLoaderMac-related leaks seen on Leaks bot

The leaks bot is producing gigibytes of logs (literally) to document (primarily a set of leaks around WebDocumentLoaderMac

Such as:

        Call stack: [thread 0x7fff734a4180]: | start | main DumpRenderTree.mm:931 | dumpRenderTree(int, char const**) DumpRenderTree.mm:893 | runTestingServerLoop() DumpRenderTree.mm:846 | runTest(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) DumpRenderTree.mm:1417 | -[WebFrame loadHTMLString:baseURL:] WebFrame.mm:1443 | -[WebFrame _loadHTMLString:baseURL:unreachableURL:] WebFrame.mm:1436 | -[WebFrame _loadData:MIMEType:textEncodingName:baseURL:unreachableURL:] WebFrame.mm:1419 | WebCore::FrameLoader::load(WebCore::FrameLoadRequest const&) FrameLoader.cpp:1286 | WebFrameLoaderClient::createDocumentLoader(WebCore::ResourceRequest const&, WebCore::SubstituteData const&) WebFrameLoaderClient.mm:1135 | WebDocumentLoaderMac::create(WebCore::ResourceRequest const&, WebCore::SubstituteData const&) WebDocumentLoaderMac.h:44 | WebDocumentLoaderMac::WebDocumentLoaderMac(WebCore::ResourceRequest const&, WebCore::SubstituteData const&) WebDocumentLoaderMac.mm:41 | WebDocumentLoaderMac::WebDocumentLoaderMac(WebCore::ResourceRequest const&, WebCore::SubstituteData const&) WebDocumentLoaderMac.mm:40 | WebCore::DocumentLoader::DocumentLoader(WebCore::ResourceRequest const&, WebCore::SubstituteData const&) DocumentLoader.cpp:91 | WebCore::ResourceResponse::ResourceResponse() ResourceResponse.h:45 | WebCore::ResourceResponse::ResourceResponse() ResourceResponse.h:44 | WebCore::ResourceResponseBase::ResourceResponseBase() ResourceResponseBase.cpp:70 | WebCore::HTTPHeaderMap::HTTPHeaderMap() HTTPHeaderMap.cpp:42 | WebCore::HTTPHeaderMap::HTTPHeaderMap() HTTPHeaderMap.cpp:42 | WTF::HashMap<WTF::AtomicString, WTF::String, WTF::CaseFoldingHash, WTF::HashTraits<WTF::AtomicString>, WTF::HashTraits<WTF::String> >::HashMap() HashMap.h:43 | WTF::HashTable<WTF::AtomicString, WTF::KeyValuePair<WTF::AtomicString, WTF::String>, WTF::KeyValuePairKeyExtractor<WTF::KeyValuePair<WTF::AtomicString, WTF::String> >, WTF::CaseFoldingHash, WTF::HashMapValueTraits<WTF::HashTraits<WTF::AtomicString>, WTF::HashTraits<WTF::String> >, WTF::HashTraits<WTF::AtomicString> >::HashTable() HashTable.h:560 | WTF::HashTable<WTF::AtomicString, WTF::KeyValuePair<WTF::AtomicString, WTF::String>, WTF::KeyValuePairKeyExtractor<WTF::KeyValuePair<WTF::AtomicString, WTF::String> >, WTF::CaseFoldingHash, WTF::HashMapValueTraits<WTF::HashTraits<WTF::AtomicString>, WTF::HashTraits<WTF::String> >, WTF::HashTraits<WTF::AtomicString> >::HashTable() HashTable.h:554 | WTF::Mutex::operator new(unsigned long) ThreadingPrimitives.h:76 | WTF::fastMalloc(unsigned long) FastMalloc.cpp:274 | malloc | malloc_zone_malloc

And:

        Call stack: [thread 0x7fff734a4180]: | start | main DumpRenderTree.mm:931 | dumpRenderTree(int, char const**) DumpRenderTree.mm:893 | runTestingServerLoop() DumpRenderTree.mm:846 | runTest(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) DumpRenderTree.mm:1417 | -[WebFrame loadHTMLString:baseURL:] WebFrame.mm:1443 | -[WebFrame _loadHTMLString:baseURL:unreachableURL:] WebFrame.mm:1436 | -[WebFrame _loadData:MIMEType:textEncodingName:baseURL:unreachableURL:] WebFrame.mm:1419 | WebCore::FrameLoader::load(WebCore::FrameLoadRequest const&) FrameLoader.cpp:1286 | WebFrameLoaderClient::createDocumentLoader(WebCore::ResourceRequest const&, WebCore::SubstituteData const&) WebFrameLoaderClient.mm:1135 | WebDocumentLoaderMac::create(WebCore::ResourceRequest const&, WebCore::SubstituteData const&) WebDocumentLoaderMac.h:44 | WTF::RefCounted<WebCore::DocumentLoader>::operator new(unsigned long) RefCounted.h:197 | WTF::fastMalloc(unsigned long) FastMalloc.cpp:274 | malloc | malloc_zone_malloc 
Leak: 0x7fb71886b200  size=2560  zone: DefaultMallocZone_0x10806e000   WebDocumentLoaderMac  C++  WebKit
        0x08388b00 0x00000001 0x00000001 0x01000000     ..8.............
        0x00000000 0x00000000 0x22011c70 0x00007fb7     ........p.."....
        0x00000000 0x00000000 0x00000000 0x00000000     ................
        0x00000000 0x00000000 0x00000000 0x00000000     ................
        0x00000000 0x00000000 0x22011de0 0x00007fb7     ..........."....
        0x00000000 0x00000000 0x00000000 0x00000000     ................
        0x00000000 0x00000000 0x00000000 0x00000000     ................
        0x22011e20 0x00007fb7 0x00000000 0x00000000      .."............
        ...


It's unclear what exactly is going on, but presumably some major leaking.

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