[Webkit-unassigned] [Bug 93268] New: Assertion failure scrolling patch review page in RenderLayer::updateClipRects

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=93268

           Summary: Assertion failure scrolling patch review page in
                    RenderLayer::updateClipRects
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: koivisto at iki.fi
                CC: simon.fraser at apple.com, kling at webkit.org


Steps to reproduce:

1) Go to https://bugs.webkit.org/attachment.cgi?id=156687&action=review
2) Resize the page smaller
3) Scroll the page

ASSERTION FAILED: rootLayer == m_clipRectsCache->m_clipRectsRoot[clipRectsType]
/Users/antti/webkit/OpenSource/Source/WebCore/rendering/RenderLayer.cpp(3884) : void WebCore::RenderLayer::updateClipRects(const WebCore::RenderLayer *, WebCore::RenderRegion *, WebCore::ClipRectsType, WebCore::OverlayScrollbarSizeRelevancy)
1   0x10419049c WebCore::RenderLayer::updateClipRects(WebCore::RenderLayer const*, WebCore::RenderRegion*, WebCore::ClipRectsType, WebCore::OverlayScrollbarSizeRelevancy)
2   0x104190f7d WebCore::RenderLayer::parentClipRects(WebCore::RenderLayer const*, WebCore::RenderRegion*, WebCore::ClipRectsType, WebCore::ClipRects&, WebCore::OverlayScrollbarSizeRelevancy) const
3   0x10418a1f6 WebCore::RenderLayer::backgroundClipRect(WebCore::RenderLayer const*, WebCore::RenderRegion*, WebCore::ClipRectsType, WebCore::OverlayScrollbarSizeRelevancy) const
4   0x10418b6a9 WebCore::RenderLayer::calculateRects(WebCore::RenderLayer const*, WebCore::RenderRegion*, WebCore::ClipRectsType, WebCore::FractionalLayoutRect const&, WebCore::FractionalLayoutRect&, WebCore::ClipRect&, WebCore::ClipRect&, WebCore::ClipRect&, WebCore::OverlayScrollbarSizeRelevancy) const
5   0x10419158f WebCore::RenderLayer::localClipRect() const
6   0x10417f876 WebCore::RenderLayer::calculateLayerBounds(WebCore::RenderLayer const*, WebCore::RenderLayer const*, unsigned int)
7   0x10417fddd WebCore::RenderLayer::calculateLayerBounds(WebCore::RenderLayer const*, WebCore::RenderLayer const*, unsigned int)
8   0x1041af7b9 WebCore::RenderLayerCompositor::calculateCompositedBounds(WebCore::RenderLayer const*, WebCore::RenderLayer const*)
9   0x1041a37f4 WebCore::RenderLayerBacking::updateCompositedBounds()
10  0x1041ae0a9 WebCore::RenderLayerCompositor::rebuildCompositingLayerTree(WebCore::RenderLayer*, WTF::Vector<WebCore::GraphicsLayer*, 0ul>&, int)
11  0x1041ae3bb WebCore::RenderLayerCompositor::rebuildCompositingLayerTree(WebCore::RenderLayer*, WTF::Vector<WebCore::GraphicsLayer*, 0ul>&, int)
12  0x1041ae3bb WebCore::RenderLayerCompositor::rebuildCompositingLayerTree(WebCore::RenderLayer*, WTF::Vector<WebCore::GraphicsLayer*, 0ul>&, int)
13  0x1041ad250 WebCore::RenderLayerCompositor::updateCompositingLayers(WebCore::CompositingUpdateType, WebCore::RenderLayer*)
14  0x103613e25 WebCore::FrameView::updateFixedElementsAfterScrolling()
15  0x1043b716a WebCore::ScrollView::scrollTo(WebCore::IntSize const&)
16  0x103616251 WebCore::FrameView::scrollTo(WebCore::IntSize const&)
17  0x1043b7060 WebCore::ScrollView::setScrollOffset(WebCore::IntPoint const&)
18  0x1043b709f non-virtual thunk to WebCore::ScrollView::setScrollOffset(WebCore::IntPoint const&)
19  0x104390f06 WebCore::ScrollableArea::scrollPositionChanged(WebCore::IntPoint const&)
20  0x104390e9f WebCore::ScrollableArea::notifyScrollPositionChanged(WebCore::IntPoint const&)
21  0x1043a97ea WebCore::ScrollingCoordinator::updateMainFrameScrollPositionAndScrollLayerPosition()
22  0x1043af570 WTF::FunctionWrapper<void (WebCore::ScrollingCoordinator::*)()>::operator()(WebCore::ScrollingCoordinator*)
23  0x1043af4f5 WTF::BoundFunctionImpl<WTF::FunctionWrapper<void (WebCore::ScrollingCoordinator::*)()>, void (WebCore::ScrollingCoordinator*)>::operator()()
24  0x1025990e5 WTF::Function<void ()>::operator()() const
25  0x10259715d WTF::callFunctionObject(void*)
26  0x102596c85 WTF::dispatchFunctionsFromMainThread()
27  0x102599715 -[JSWTFMainThreadCaller call]
28  0x7fff8a0968a7 __NSThreadPerformPerform
29  0x7fff8e4f9841 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
30  0x7fff8e4f9165 __CFRunLoopDoSources0
31  0x7fff8e51c4e5 __CFRunLoopRun

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