Bug 210496

Created attachment 396417 [details]
move-node-in-overflow-scroll-crash-log

fast/scrolling/mac/move-node-in-overflow-scroll.html

Description:
This test is flaky crashing on Mac wk2 Debug. The test was consistently passing until 04/10/2020.Theres a potential regression point of r259872.

History:
https://results.webkit.org/?suite=layout-tests&test=fast%2Fscrolling%2Fmac%2Fmove-node-in-overflow-scroll.html&flavor=wk2&style=debug

Crash logs:
No crash log found for com.apple.WebKit.WebContent.Development:44375.

stdout:

stderr:
ASSERTION FAILED: entry.clipData.clippingLayer->isComposited()
./rendering/RenderLayerCompositor.cpp(4626) : WebCore::ScrollingNodeID WebCore::RenderLayerCompositor::updateScrollingNodeForScrollingProxyRole(WebCore::RenderLayer &, WebCore::ScrollingTreeState &, OptionSet<WebCore::RenderLayerCompositor::ScrollingNodeChangeFlags>)
1   0x1fe374ff9 WTFCrash
2   0x1e0fe39db WTFCrashWithInfo(int, char const*, char const*, int)
3   0x1e50d3811 WebCore::RenderLayerCompositor::updateScrollingNodeForScrollingProxyRole(WebCore::RenderLayer&, WebCore::ScrollingTreeState&, WTF::OptionSet<WebCore::RenderLayerCompositor::ScrollingNodeChangeFlags>)
4   0x1e50c8a3b WebCore::RenderLayerCompositor::updateScrollCoordinationForLayer(WebCore::RenderLayer&, WebCore::RenderLayer const*, WebCore::ScrollingTreeState&, WTF::OptionSet<WebCore::RenderLayerCompositor::ScrollingNodeChangeFlags>)
5   0x1e50c5593 WebCore::RenderLayerCompositor::updateBackingAndHierarchy(WebCore::RenderLayer&, WTF::Vector<WTF::Ref<WebCore::GraphicsLayer, WTF::DumbPtrTraits<WebCore::GraphicsLayer> >, 0ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>&, WebCore::RenderLayerCompositor::UpdateBackingTraversalState&, WebCore::ScrollingTreeState&, WTF::OptionSet<WebCore::RenderLayerCompositor::UpdateLevel>)
6   0x1e50c5992 WebCore::RenderLayerCompositor::updateBackingAndHierarchy(WebCore::RenderLayer&, WTF::Vector<WTF::Ref<WebCore::GraphicsLayer, WTF::DumbPtrTraits<WebCore::GraphicsLayer> >, 0ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>&, WebCore::RenderLayerCompositor::UpdateBackingTraversalState&, WebCore::ScrollingTreeState&, WTF::OptionSet<WebCore::RenderLayerCompositor::UpdateLevel>)
7   0x1e50c5992 WebCore::RenderLayerCompositor::updateBackingAndHierarchy(WebCore::RenderLayer&, WTF::Vector<WTF::Ref<WebCore::GraphicsLayer, WTF::DumbPtrTraits<WebCore::GraphicsLayer> >, 0ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>&, WebCore::RenderLayerCompositor::UpdateBackingTraversalState&, WebCore::ScrollingTreeState&, WTF::OptionSet<WebCore::RenderLayerCompositor::UpdateLevel>)
8   0x1e50c2ce0 WebCore::RenderLayerCompositor::updateCompositingLayers(WebCore::CompositingUpdateType, WebCore::RenderLayer*)
9   0x1e50c1f9b WebCore::RenderLayerCompositor::didRecalcStyleWithNoPendingLayout()
10  0x1e46d3f77 WebCore::FrameView::updateCompositingLayersAfterStyleChange()
11  0x1e3916572 WebCore::Document::resolveStyle(WebCore::Document::ResolveStyleType)
12  0x1e3916fb0 WebCore::Document::updateStyleIfNeeded()
13  0x1e46b0df7 WebCore::FrameView::updateLayoutAndStyleIfNeededRecursive()
14  0x1e47452be WebCore::Page::layoutIfNeeded()
15  0x1e474551e WebCore::Page::updateRendering()
16  0x10e2da7d6 WebKit::WebPage::updateRendering()
17  0x10dd190e4 WebKit::TiledCoreAnimationDrawingArea::updateRendering(WebKit::TiledCoreAnimationDrawingArea::UpdateRenderingType)
18  0x10dd1d92d WebKit::TiledCoreAnimationDrawingArea::updateRenderingRunLoopCallback()
19  0x10dd2dc48 WebKit::TiledCoreAnimationDrawingArea::TiledCoreAnimationDrawingArea(WebKit::WebPage&, WebKit::WebPageCreationParameters const&)::$_0::operator()() const
20  0x10dd2dbfe WTF::Detail::CallableWrapper<WebKit::TiledCoreAnimationDrawingArea::TiledCoreAnimationDrawingArea(WebKit::WebPage&, WebKit::WebPageCreationParameters const&)::$_0, void>::call()
21  0x1e0ff6382 WTF::Function<void ()>::operator()() const
22  0x1e49f0d70 WebCore::RunLoopObserver::runLoopObserverFired()
23  0x1e49f0cd0 WebCore::RunLoopObserver::runLoopObserverFired(__CFRunLoopObserver*, unsigned long, void*)
24  0x7fff376d74f5 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__
25  0x7fff376d7427 __CFRunLoopDoObservers
26  0x7fff376d6039 CFRunLoopRunSpecific
27  0x7fff39d6a2a8 -[NSRunLoop(NSRunLoop) runMode:beforeDate:]
28  0x7fff39e1cd2f -[NSRunLoop(NSRunLoop) run]
29  0x7fff7186d51a _xpc_objc_main.cold.4
30  0x7fff7186d460 _xpc_objc_main
31  0x7fff7186cf93 _xpc_copy_xpcservice_dictionary
LEAK: 1 WebPageProxy