[Webkit-unassigned] [Bug 210307] New: REGRESSION: [ Mac Debug wk2 ] fast/events/scroll-subframe-in-rendering-update.html is a flaky crash

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=210307

            Bug ID: 210307
           Summary: REGRESSION: [ Mac Debug wk2 ]
                    fast/events/scroll-subframe-in-rendering-update.html
                    is a flaky crash
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: tsavell at apple.com

fast/events/scroll-subframe-in-rendering-update.html

This test began crashing recently

history:
https://results.webkit.org/?suite=layout-tests&test=fast%2Fevents%2Fscroll-subframe-in-rendering-update.html

Log:
No crash log found for com.apple.WebKit.WebContent.Development:3321.

stdout:

stderr:
ASSERTION FAILED: !needsLayout()
./page/FrameView.cpp(4276) : virtual void WebCore::FrameView::paintContents(WebCore::GraphicsContext &, const WebCore::IntRect &, WebCore::Widget::SecurityOriginPaintPolicy, WebCore::EventRegionContext *)
1   0x139f2b6d9 WTFCrash
2   0x11cbf6c0b WTFCrashWithInfo(int, char const*, char const*, int)
3   0x1202f0eb6 WebCore::FrameView::paintContents(WebCore::GraphicsContext&, WebCore::IntRect const&, WebCore::Widget::SecurityOriginPaintPolicy, WebCore::EventRegionContext*)
4   0x1205698c4 WebCore::ScrollView::paint(WebCore::GraphicsContext&, WebCore::IntRect const&, WebCore::Widget::SecurityOriginPaintPolicy, WebCore::EventRegionContext*)
5   0x120df40bb WebCore::RenderWidget::paintContents(WebCore::PaintInfo&, WebCore::LayoutPoint const&)
6   0x120df4977 WebCore::RenderWidget::paint(WebCore::PaintInfo&, WebCore::LayoutPoint const&)
7   0x120c79824 WebCore::RenderLayer::collectEventRegionForFragments(WTF::Vector<WebCore::LayerFragment, 1ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc> const&, WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&)
8   0x120c75a2f WebCore::RenderLayer::paintLayerContents(WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, WTF::OptionSet<WebCore::RenderLayer::PaintLayerFlag>)
9   0x120cc0c69 WebCore::RenderLayerBacking::paintIntoLayer(WebCore::GraphicsLayer const*, WebCore::GraphicsContext&, WebCore::IntRect const&, WTF::OptionSet<WebCore::PaintBehavior>, WebCore::EventRegionContext*)::$_5::operator()(WebCore::RenderLayer&, WTF::OptionSet<WebCore::RenderLayer::PaintLayerFlag>) const
10  0x120cc0522 WebCore::RenderLayerBacking::paintIntoLayer(WebCore::GraphicsLayer const*, WebCore::GraphicsContext&, WebCore::IntRect const&, WTF::OptionSet<WebCore::PaintBehavior>, WebCore::EventRegionContext*)

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