[Webkit-unassigned] [Bug 191962] New: REGRESSION: [iOS] ASSERTION FAILED: willBeComposited == needsToBeComposited(layer, queryData)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=191962

            Bug ID: 191962
           Summary: REGRESSION: [iOS] ASSERTION FAILED: willBeComposited
                    == needsToBeComposited(layer, queryData)
           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: ryanhaddad at apple.com

The following assertion failure is seen on iOS simulator with css3/filters/blur-filter-page* layout tests:

ASSERTION FAILED: willBeComposited == needsToBeComposited(layer, queryData)
./rendering/RenderLayerCompositor.cpp(972) : void WebCore::RenderLayerCompositor::computeCompositingRequirements(WebCore::RenderLayer *, WebCore::RenderLayer &, WebCore::RenderLayerCompositor::OverlapMap &, WebCore::RenderLayerCompositor::CompositingState &, bool &)
1   0x630098f59 WTFCrash
2   0x633f2de2b WTFCrashWithInfo(int, char const*, char const*, int)
3   0x63719a248 WebCore::RenderLayerCompositor::computeCompositingRequirements(WebCore::RenderLayer*, WebCore::RenderLayer&, WebCore::RenderLayerCompositor::OverlapMap&, WebCore::RenderLayerCompositor::CompositingState&, bool&)
4   0x6371643ba WebCore::RenderLayerCompositor::updateCompositingLayers(WebCore::CompositingUpdateType, WebCore::RenderLayer*)
5   0x6369374b3 WebCore::FrameView::updateCompositingLayersAfterLayout()
6   0x636939ebf WebCore::FrameView::didLayout(WTF::WeakPtr<WebCore::RenderElement>)
7   0x63692fb0a WebCore::FrameViewLayoutContext::layout()
8   0x635f05726 WebCore::Document::updateLayout()
9   0x635f06cae WebCore::Document::updateLayoutIgnorePendingStylesheets(WebCore::Document::RunPostLayoutTasks)
10  0x635fbe399 WebCore::Element::offsetTop()
11  0x6349c7d9d WebCore::jsHTMLElementOffsetTopGetter(JSC::ExecState&, WebCore::JSHTMLElement&, JSC::ThrowScope&)
12  0x63497d520 long long WebCore::IDLAttribute<WebCore::JSHTMLElement>::get<&(WebCore::jsHTMLElementOffsetTopGetter(JSC::ExecState&, WebCore::JSHTMLElement&, JSC::ThrowScope&)), (WebCore::CastedThisErrorBehavior)3>(JSC::ExecState&, long long, char const*)
13  0x63497d3fb WebCore::jsHTMLElementOffsetTop(JSC::ExecState*, long long, JSC::PropertyName)
14  0x63125fc6b JSC::PropertySlot::customGetter(JSC::ExecState*, JSC::PropertyName) const
15  0x63043a9f2 JSC::PropertySlot::getValue(JSC::ExecState*, JSC::PropertyName) const
16  0x630a587a5 JSC::JSValue::get(JSC::ExecState*, JSC::PropertyName, JSC::PropertySlot&) const
17  0x630e6cefe llint_slow_path_get_by_id
18  0x6303ff2c8 llint_entry
19  0x63040b0f0 llint_entry
20  0x6303f7e80 vmEntryToJavaScript
21  0x630d61bfe JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*)
22  0x630d62299 JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)
23  0x63103079c JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)
24  0x63103088a JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)
25  0x631030b7e JSC::profiledCall(JSC::ExecState*, JSC::ProfilingReason, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)
26  0x6359fd98b WebCore::JSExecState::profiledCall(JSC::ExecState*, JSC::ProfilingReason, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)
27  0x635a3cd64 WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext&, WebCore::Event&)
28  0x635ff460c WebCore::EventTarget::innerInvokeEventListeners(WebCore::Event&, WTF::Vector<WTF::RefPtr<WebCore::RegisteredEventListener, WTF::DumbPtrTraits<WebCore::RegisteredEventListener> >, 1ul, WTF::CrashOnOverflow, 16ul>, WebCore::EventTarget::EventInvokePhase)
29  0x635feffc2 WebCore::EventTarget::fireEventListeners(WebCore::Event&, WebCore::EventTarget::EventInvokePhase)
30  0x6368c94a1 WebCore::DOMWindow::dispatchEvent(WebCore::Event&, WebCore::EventTarget*)
31  0x6368d3dd5 WebCore::DOMWindow::dispatchLoadEvent()

https://build.webkit.org/results/Apple%20iOS%2012%20Simulator%20Debug%20WK2%20(Tests)/r238486%20(989)/results.html

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