RELEASE_ASSERT() under IPC::Connection::sendSync() from PluginProxy::supportsSnapshotting(): Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 com.apple.WebKit 0x00007fff56e077c4 bool IPC::Connection::sendSync<Messages::PluginControllerProxy::SupportsSnapshotting>(Messages::PluginControllerProxy::SupportsSnapshotting&&, Messages::PluginControllerProxy::SupportsSnapshotting::Reply&&, unsigned long long, WTF::Seconds, WTF::OptionSet<IPC::SendSyncOption>) + 330 1 com.apple.WebKit 0x00007fff56c9ac89 WebKit::PluginProxy::supportsSnapshotting() const + 85 2 com.apple.WebKit 0x00007fff56caf3c5 WebKit::PluginView::shouldNotAddLayer() const + 27 3 com.apple.WebCore 0x00007fff565da061 WebCore::RenderLayerBacking::updateConfiguration() + 1297 4 com.apple.WebCore 0x00007fff565d586c WebCore::RenderLayerCompositor::layerStyleChanged(WebCore::StyleDifference, WebCore::RenderLayer&, WebCore::RenderStyle const*) + 76 5 com.apple.WebCore 0x00007fff5521d01d WebCore::RenderLayer::styleChanged(WebCore::StyleDifference, WebCore::RenderStyle const*) + 1085 6 com.apple.WebCore 0x00007fff5521c15c WebCore::RenderLayerModelObject::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) + 732 7 com.apple.WebCore 0x00007fff5521b33b WebCore::RenderBox::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) + 43 8 com.apple.WebCore 0x00007fff552c7612 WebCore::RenderReplaced::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) + 18 9 com.apple.WebCore 0x00007fff552cddbe WebCore::RenderWidget::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) + 14 10 com.apple.WebCore 0x00007fff5658d061 WebCore::RenderElement::setStyle(WebCore::RenderStyle&&, WebCore::StyleDifference) + 209 11 com.apple.WebCore 0x00007fff566dd581 WebCore::RenderTreeUpdater::updateElementRenderer(WebCore::Element&, WebCore::Style::ElementUpdate const&) + 673 12 com.apple.WebCore 0x00007fff566dc90d WebCore::RenderTreeUpdater::updateRenderTree(WebCore::ContainerNode&) + 1021 13 com.apple.WebCore 0x00007fff566dc46b WebCore::RenderTreeUpdater::commit(std::__1::unique_ptr<WebCore::Style::Update const, std::__1::default_delete<WebCore::Style::Update const> >) + 619 14 com.apple.WebCore 0x00007fff55f56e9a WebCore::Document::resolveStyle(WebCore::Document::ResolveStyleType) + 1018 15 com.apple.WebCore 0x00007fff5522c81a WebCore::Document::updateStyleIfNeeded() + 282 16 com.apple.WebCore 0x00007fff5630c6cc WebCore::FrameViewLayoutContext::layout() + 620 17 com.apple.WebCore 0x00007fff55208c10 WebCore::ThreadTimers::sharedTimerFiredInternal() + 336 18 com.apple.WebCore 0x00007fff55208aaf WebCore::timerFired(__CFRunLoopTimer*, void*) + 31 19 com.apple.CoreFoundation 0x00007fff47ae4b4e __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20 20 com.apple.CoreFoundation 0x00007fff47ae46f3 __CFRunLoopDoTimer + 865 21 com.apple.CoreFoundation 0x00007fff47ae42d4 __CFRunLoopDoTimers + 333 22 com.apple.CoreFoundation 0x00007fff47adcb4a __CFRunLoopRun + 2182 23 com.apple.CoreFoundation 0x00007fff47adc0a7 CFRunLoopRunSpecific + 463 24 com.apple.Foundation 0x00007fff49eba891 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 280 25 com.apple.Foundation 0x00007fff49eba766 -[NSRunLoop(NSRunLoop) run] + 76 26 libxpc.dylib 0x00007fff74e39f4e _xpc_objc_main + 567 27 libxpc.dylib 0x00007fff74e38ba5 xpc_main + 443 28 com.apple.WebKit.WebContent 0x1014e563f main + 547 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/WebKit2/WebKit2-7606.1.20.40.2/Shared/EntryPointUtilities/mac/XPCService/XPCServiceMain.mm:160) 29 libdyld.dylib 0x00007fff74befb11 start + 1
<rdar://problem/41818955>
Created attachment 345202 [details] Patch
Comment on attachment 345202 [details] Patch Attachment 345202 [details] did not pass win-ews (win): Output: https://webkit-queues.webkit.org/results/8568434 New failing tests: http/tests/security/canvas-remote-read-remote-video-blocked-no-crossorigin.html
Created attachment 345210 [details] Archive of layout-test-results from ews206 for win-future The attached test failures were seen while running run-webkit-tests on the win-ews. Bot: ews206 Port: win-future Platform: CYGWIN_NT-6.1-2.9.0-0.318-5-3-x86_64-64bit
Comment on attachment 345202 [details] Patch Clearing flags on attachment: 345202 Committed r233904: <https://trac.webkit.org/changeset/233904>
All reviewed patches have been landed. Closing bug.