[Webkit-unassigned] [Bug 101241] New: [EFL] [WK2] Random crash in Minibrowser

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=101241

           Summary: [EFL] [WK2] Random crash in Minibrowser
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit EFL
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ostap73 at gmail.com
                CC: demarchi at webkit.org


Assert in debug build or crash in release build on page load with multiple layers:
ASSERTION FAILED: !HashTranslator::equal(KeyTraits::emptyValue(), key)
/home/sl/work/webkit/Source/WTF/wtf/HashTable.h(588) : void WTF::HashTable<Key, Value, Extractor, HashFunctions, Traits, KeyTraits>::checkKey(const T&) [with HashTranslator = WTF::IdentityHashTranslator<WTF::PtrHash<void*> >, T = void*, Key = void*, Value = WTF::KeyValuePair<void*, WebCore::TextureMapperGLData::SharedGLData*>, Extractor = WTF::KeyValuePairKeyExtractor<WTF::KeyValuePair<void*, WebCore::TextureMapperGLData::SharedGLData*> >, HashFunctions = WTF::PtrHash<void*>, Traits = WTF::HashMapValueTraits<WTF::HashTraits<void*>, WTF::HashTraits<WebCore::TextureMapperGLData::SharedGLData*> >, KeyTraits = WTF::HashTraits<void*>]
1   0xb41b105b void WTF::HashTable<void*, WTF::KeyValuePair<void*, WebCore::TextureMapperGLData::SharedGLData*>, WTF::KeyValuePairKeyExtractor<WTF::KeyValuePair<void*, WebCore::TextureMapperGLData::SharedGLData*> >, WTF::PtrHash<void*>, WTF::HashMapValueTraits<WTF::HashTraits<void*>, WTF::HashTraits<WebCore::TextureMapperGLData::SharedGLData*> >, WTF::HashTraits<void*> >::checkKey<WTF::IdentityHashTranslator<WTF::PtrHash<void*> >, void*>(void* const&)
2   0xb41b086a WTF::KeyValuePair<void*, WebCore::TextureMapperGLData::SharedGLData*>* WTF::HashTable<void*, WTF::KeyValuePair<void*, WebCore::TextureMapperGLData::SharedGLData*>, WTF::KeyValuePairKeyExtractor<WTF::KeyValuePair<void*, WebCore::TextureMapperGLData::SharedGLData*> >, WTF::PtrHash<void*>, WTF::HashMapValueTraits<WTF::HashTraits<void*>, WTF::HashTraits<WebCore::TextureMapperGLData::SharedGLData*> >, WTF::HashTraits<void*> >::lookup<WTF::IdentityHashTranslator<WTF::PtrHash<void*> >, void*>(void* const&)
3   0xb41afebe WTF::HashTableIterator<void*, WTF::KeyValuePair<void*, WebCore::TextureMapperGLData::SharedGLData*>, WTF::KeyValuePairKeyExtractor<WTF::KeyValuePair<void*, WebCore::TextureMapperGLData::SharedGLData*> >, WTF::PtrHash<void*>, WTF::HashMapValueTraits<WTF::HashTraits<void*>, WTF::HashTraits<WebCore::TextureMapperGLData::SharedGLData*> >, WTF::HashTraits<void*> > WTF::HashTable<void*, WTF::KeyValuePair<void*, WebCore::TextureMapperGLData::SharedGLData*>, WTF::KeyValuePairKeyExtractor<WTF::KeyValuePair<void*, WebCore::TextureMapperGLData::SharedGLData*> >, WTF::PtrHash<void*>, WTF::HashMapValueTraits<WTF::HashTraits<void*>, WTF::HashTraits<WebCore::TextureMapperGLData::SharedGLData*> >, WTF::HashTraits<void*> >::find<WTF::IdentityHashTranslator<WTF::PtrHash<void*> >, void*>(void* const&)
4   0xb41af21b WTF::HashTable<void*, WTF::KeyValuePair<void*, WebCore::TextureMapperGLData::SharedGLData*>, WTF::KeyValuePairKeyExtractor<WTF::KeyValuePair<void*, WebCore::TextureMapperGLData::SharedGLData*> >, WTF::PtrHash<void*>, WTF::HashMapValueTraits<WTF::HashTraits<void*>, WTF::HashTraits<WebCore::TextureMapperGLData::SharedGLData*> >, WTF::HashTraits<void*> >::find(void* const&)
5   0xb41ae78d WTF::HashMap<void*, WebCore::TextureMapperGLData::SharedGLData*, WTF::PtrHash<void*>, WTF::HashTraits<void*>, WTF::HashTraits<WebCore::TextureMapperGLData::SharedGLData*> >::find(void* const&)
6   0xb41ae0fc WebCore::TextureMapperGLData::SharedGLData::currentSharedGLData(WebCore::GraphicsContext3D*)
7   0xb41ae4fb WebCore::TextureMapperGLData::TextureMapperGLData(WebCore::GraphicsContext3D*)
8   0xb41a9348 WebCore::TextureMapperGL::TextureMapperGL()
9   0xb41ad805 WebCore::TextureMapperGL::create()
10  0xb41ad765 WebCore::TextureMapper::platformCreateAccelerated()
11  0xb3750d4f WebCore::TextureMapper::create(WebCore::TextureMapper::AccelerationMode)
12  0xb71a5e03 WebKit::LayerTreeRenderer::ensureRootLayer()
13  0xb71a5fb5 WebKit::LayerTreeRenderer::syncRemoteContent()
14  0xb7302a56 WebKit::PageViewportControllerClientEfl::display(WebCore::IntRect const&, WebCore::IntPoint const&)
15  0xb72ceb8d EwkViewImpl::displayTimerFired(WebCore::Timer<EwkViewImpl>*)
16  0xb72d5370 WebCore::Timer<EwkViewImpl>::fired()
17  0xb36d24bf WebCore::ThreadTimers::sharedTimerFiredInternal()
18  0xb36d23e3 WebCore::ThreadTimers::sharedTimerFired()
19  0xb4127453
20  0xb6a7d506 _ecore_timer_expired_call
21  0xb6a7d6c4 _ecore_timer_expired_timers_call
22  0xb6a79fdb
23  0xb6a7a6ef ecore_main_loop_begin
24  0xb6911d14 elm_run
25  0x804c46e elm_main
26  0x804c4b1 main
27  0xb65974d3 __libc_start_main
28  0x804a461
Segmentation fault (core dumped)

It seems that from time to time accelerated compositing get switched off and immediately on. GL context variables gets cleared in EwkViewImpl::exitAcceleratedCompositingMode and recreated in EwkViewImpl::enterAcceleratedCompositingMode , but display timer continues to run and causes crash because of 0 GL context in EwkViewImpl::displayTimerFired .

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