Bug 210307

Summary:	REGRESSION: [ Mac Debug wk2 ] fast/events/scroll-subframe-in-rendering-update.html is a flaky crash
Product:	WebKit	Reporter:	Truitt Savell <tsavell>
Component:	New Bugs	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal
Priority:	P2
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Truitt Savell 2020-04-09 14:49:14 PDT

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*)

Comment 1 Truitt Savell 2020-04-09 15:03:52 PDT

I was able to reproduce this crash using command:
run-webkit-tests --iterations 2000 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --debug-rwt-logging --no-retry --force --no-build -f --debug fast/events/scroll-subframe-in-rendering-update.html

Comment 2 Truitt Savell 2020-04-09 15:11:58 PDT


*** This bug has been marked as a duplicate of bug 210278 ***