RESOLVED DUPLICATE of bug 248782 248734
ASSERTION FAILED: m_element under WebFullScreenManager::willExitFullScreen on media/video-inaccurate-duration-ended.html in EWS 
https://bugs.webkit.org/show_bug.cgi?id=248734
Summary ASSERTION FAILED: m_element under WebFullScreenManager::willExitFullScreen on...
Simon Fraser (smfr)
Reported 2022-12-03 20:58:43 PST
https://ews-build.s3-us-west-2.amazonaws.com/macOS-AppleSilicon-Big-Sur-Debug-WK2-Tests-EWS/d33837a3-45214/results.html media/video-inaccurate-duration-ended.html crashes sometimes: ASSERTION FAILED: m_element /Volumes/Data/worker/macOS-AppleSilicon-Big-Sur-Debug-Build-EWS/build/Source/WebKit/WebProcess/FullScreen/WebFullScreenManager.cpp(293) : void WebKit::WebFullScreenManager::willExitFullScreen() 1 0x1411a4b60 WTFCrash 2 0x10195ecd0 WTFCrashWithInfo(int, char const*, char const*, int) 3 0x10355d04c WebKit::WebFullScreenManager::willExitFullScreen() 4 0x1038ac3e4 WKBundlePageWillExitFullScreen 5 0x164052490 WTR::InjectedBundlePage::exitFullScreenForElement(OpaqueWKBundleNodeHandle const*) 6 0x16404b3f8 WTR::InjectedBundlePage::exitFullScreenForElement(OpaqueWKBundlePage const*, OpaqueWKBundleNodeHandle const*) 7 0x10389aa40 WebKit::InjectedBundlePageFullScreenClient::exitFullScreenForElement(WebKit::WebPage*, WebCore::Element*) 8 0x10355c580 WebKit::WebFullScreenManager::exitFullScreenForElement(WebCore::Element*) 9 0x103aa6818 WebKit::WebFrameLoaderClient::dispatchDidStartProvisionalLoad() 10 0x11bc850ec WebCore::FrameLoader::prepareForLoadStart() 11 0x11bccd7bc WebCore::FrameLoader::continueLoadAfterNavigationPolicy(WebCore::ResourceRequest const&, WebCore::FormState*, WebCore::NavigationPolicyDecision, WebCore::AllowNavigationToInvalidURL)::$_11::operator()() 12 0x11bccd5a0 WTF::Detail::CallableWrapper<WebCore::FrameLoader::continueLoadAfterNavigationPolicy(WebCore::ResourceRequest const&, WebCore::FormState*, WebCore::NavigationPolicyDecision, WebCore::AllowNavigationToInvalidURL)::$_11, void>::call() 13 0x11a04ce54 WTF::Function<void ()>::operator()() const 14 0x1173ba684 WTF::CompletionHandler<void ()>::operator()() 15 0x11bc8a1e4 WebCore::FrameLoader::continueLoadAfterNavigationPolicy(WebCore::ResourceRequest const&, WebCore::FormState*, WebCore::NavigationPolicyDecision, WebCore::AllowNavigationToInvalidURL)
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Simon Fraser (smfr)
Comment 1 2022-12-04 08:06:47 PST
media/video-inactive-playback.html also hits this.
Alexey Proskuryakov
Comment 2 2022-12-04 17:43:51 PST
This is probably caused by a preceding test. Guessing from the name, this one doesn’t seem to use fullscreen. Adding expectations would move the flakiness to next test.
Simon Fraser (smfr)
Comment 3 2022-12-05 16:52:28 PST
*** This bug has been marked as a duplicate of bug 248782 ***
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