[Webkit-unassigned] [Bug 105986] [Mac] Some tests intermittently asserts in SharedBuffer::releasePurgeableBuffer()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=105986





--- Comment #17 from Simon Fraser (smfr) <simon.fraser at apple.com>  2013-03-16 18:48:19 PST ---
These buffers seem to be always wrapped in WebCoreSharedBufferData:

* thread #1: tid = 0x2203, 0x0000000104dd21b8 WebCore`-[WebCoreSharedBufferData initWithSharedBuffer:] + 24 at SharedBufferMac.mm:76, stop reason = breakpoint 10.1
    frame #0: 0x0000000104dd21b8 WebCore`-[WebCoreSharedBufferData initWithSharedBuffer:] + 24 at SharedBufferMac.mm:76
    frame #1: 0x0000000104dd247e WebCore`WebCore::SharedBuffer::createCFData() + 158 at SharedBufferMac.mm:115
    frame #2: 0x000000010403c1bb WebCore`WebCore::ImageSource::setData(WebCore::SharedBuffer*, bool) + 75 at ImageSourceCG.cpp:148
    frame #3: 0x000000010371a156 WebCore`WebCore::BitmapImage::dataChanged(bool) + 374 at BitmapImage.cpp:256
    frame #4: 0x0000000104026fc5 WebCore`WebCore::Image::setData(WTF::PassRefPtr<WebCore::SharedBuffer>, bool) + 165 at Image.cpp:81
    frame #5: 0x000000010374b237 WebCore`WebCore::CachedImage::data(WTF::PassRefPtr<WebCore::ResourceBuffer>, bool) + 263 at CachedImage.cpp:370
    frame #6: 0x0000000104f01d64 WebCore`WebCore::SubresourceLoader::sendDataToResource(char const*, int) + 340 at SubresourceLoader.cpp:267
    frame #7: 0x0000000104f0211f WebCore`WebCore::SubresourceLoader::didReceiveDataOrBuffer(char const*, int, WTF::PassRefPtr<WebCore::SharedBuffer>, long long, WebCore::DataPayloadType) + 623 at SubresourceLoader.cpp:241
    frame #8: 0x0000000104f01e96 WebCore`WebCore::SubresourceLoader::didReceiveData(char const*, int, long long, WebCore::DataPayloadType) + 102 at SubresourceLoader.cpp:218
    frame #9: 0x000000010140c6bf WebKit2`WebKit::WebResourceLoader::didReceiveData(CoreIPC::DataReference const&, long long) + 223 at WebResourceLoader.cpp:93
    frame #10: 0x000000010140e272 WebKit2`void CoreIPC::callMemberFunction<WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(CoreIPC::DataReference const&, long long), CoreIPC::DataReference, long long>(CoreIPC::Arguments2<CoreIPC::DataReference, long long> const&, WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(CoreIPC::DataReference const&, long long)) + 146 at HandleMessage.h:27

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