Bug 306984 – REGRESSION(306393@main): [iOS Debug] 3x fast tests are a constant crash

• Status: NEW
• Component: New Bugs

[Diego De La Toba]

3x fast tests are a constant crash on IOS Debug
fast/canvas/fallback-content.html 
fast/rendering/render-style-null-optgroup-crash.html
fast/dom/HTMLProgressElement/progress-element-with-child-crash.html

HISTORY:
https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&test=fast%2Frendering%2Frender-style-null-optgroup-crash.html&test=fast%2Fdom%2FHTMLProgressElement%2Fprogress-element-with-child-crash.html&test=fast%2Fcanvas%2Ffallback-content.html

REPRODUCTION:
I was able to reproduce with the following on IOS26.2 ToT:

rwt --child-processes=1 --ios-simulator --force --no-retry --exit-after-n-crashes-or-timeouts=1 --iterations 10 <TEST>

I am going to mark expectations as pass fail while this pends investigation.

[Radar WebKit Bug Importer]

<rdar://problem/169650269>

[Diego De La Toba]

Pull request: https://github.com/WebKit/WebKit/pull/57884

[EWS]

Test gardening commit 306808@main (b5c614dfab11): <https://commits.webkit.org/306808@main>

Reviewed commits have been landed. Closing PR #57884 and removing active labels.

[Alexey Proskuryakov]

ASSERTION FAILED: !is<Element>(currentNode) || !isNonFocusableScopeOwner(downcast<Element>(*currentNode), focusEventData)
/Volumes/Data/worker/Apple-iOS-26-Simulator-Debug-Build/build/Source/WebCore/page/FocusController.cpp(752) : FocusableElementSearchResult WebCore::FocusController::findFocusableElementAcrossFocusScope(FocusDirection, const FocusNavigationScope &, Node *, const FocusEventData &, ShouldFocusElement)
1   0x34dfe3a0c WebCore::FocusController::findFocusableElementAcrossFocusScope(WebCore::FocusDirection, WebCore::FocusNavigationScope const&, WebCore::Node*, WebCore::FocusEventData const&, WebCore::ShouldFocusElement)
2   0x34dfe50e0 WebCore::FocusController::nextFocusableElement(WebCore::Node&)
3   0x135275970 WebKit::nextAssistableElement(WebCore::Node*, WebCore::Page&, bool)
4   0x13525930c WebKit::WebPage::focusedElementInformation()
5   0x13656ea3c WebKit::WebPage::elementDidFocus(WebCore::Element&, WebCore::FocusOptions const&)
6   0x13634ab20 WebKit::WebChromeClient::elementDidFocus(WebCore::Element&, WebCore::FocusOptions const&)
7   0x34ce62f60 WebCore::Element::dispatchFocusEvent(WTF::RefPtr<WebCore::Element, WTF::RawPtrTraits<WebCore::Element>, WTF::DefaultRefDerefTraits<WebCore::Element>>&&, WebCore::FocusOptions const&)
8   0x34d4e242c WebCore::HTMLSelectElement::dispatchFocusEvent(WTF::RefPtr<WebCore::Element, WTF::RawPtrTraits<WebCore::Element>, WTF::DefaultRefDerefTraits<WebCore::Element>>&&, WebCore::FocusOptions const&)
9   0x34ccf8c2c WebCore::Document::setFocusedElement(WebCore::Element*, WebCore::FocusOptions const&, WebCore::BroadcastFocusedElement)
10  0x34dfd32d8 WebCore::FocusController::setFocusedElement(WebCore::Element*, WebCore::Frame*, WebCore::FocusOptions const&, WebCore::BroadcastFocusedElement)
11  0x34ce6240c WebCore::Element::focus(WebCore::FocusOptions const&)
12  0x34d3b1a5c WebCore::HTMLFormControlElement::runFocusingStepsForAutofocus()
13  0x34ccf9868 WebCore::Document::flushAutofocusCandidates()
14  0x34e1aafa0 WebCore::Page::updateRendering()::$_3::operator()(WebCore::Document&) const
15  0x34e1aaf3c WTF::Detail::CallableWrapper<WebCore::Page::updateRendering()::$_3, void, WebCore::Document&>::call(WebCore::Document&)
16  0x34d001c48 WTF::Function<void (WebCore::Document&)>::operator()(WebCore::Document&) const
17  0x34e15093c WebCore::Page::forEachRenderableDocument(WTF::Function<void (WebCore::Document&)> const&) const
18  0x34e154080 WebCore::Page::updateRendering()::$_22::operator()(WebCore::RenderingUpdateStep, WTF::Function<void (WebCore::Document&)> const&) const
19  0x34e153adc WebCore::Page::updateRendering()
20  0x136563a14 WebKit::WebPage::updateRendering()
21  0x13291c4f0 WebKit::RemoteLayerTreeDrawingArea::updateRendering()
22  0x13291f734 WebKit::RemoteLayerTreeDrawingArea::updateRenderingWithForcedRepaint()
23  0x1365628b4 WebKit::WebPage::updateRenderingWithForcedRepaintWithoutCallback()
24  0x1360dbc84 WKBundlePageForceRepaint
25  0x117032bf0 WTR::InjectedBundlePage::dump()
26  0x117036260 WTR::dumpAfterWaitAttributeIsRemoved(OpaqueWKBundlePage const*)