[Webkit-unassigned] [Bug 282944] New: LAYER_POSITIONS_ASSERT(m_repaintContainer == repaintContainer) on bbc.com

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=282944

            Bug ID: 282944
           Summary: LAYER_POSITIONS_ASSERT(m_repaintContainer ==
                    repaintContainer) on bbc.com
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Compositing
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: simon.fraser at apple.com
                CC: simon.fraser at apple.com

Reloading bbc.com a few times in a Safari private window (not sure if relevant), I hit:
LAYER_POSITIONS_ASSERT(m_repaintContainer == repaintContainer);

    frame #0: 0x0000000300002ef8 WebCore`WTFCrashWithInfo(line=1219, file="/Volumes/Data/Development/system/webkit/OpenSource/Source/WebCore/rendering/RenderLayer.cpp", function="auto WebCore::RenderLayer::recursiveUpdateLayerPositions(RenderElement::LayoutIdentifier, OptionSet<UpdateLayerPositionsFlag>, CanUseSimplifiedRepaintPass)::(anonymous class)::operator()(bool) const", counter=4526) at Assertions.h:901:5
  * frame #1: 0x0000000306bfd930 WebCore`void WebCore::RenderLayer::recursiveUpdateLayerPositions<(WebCore::RenderLayer::UpdateLayerPositionsMode)1>(this=0x000000016f920880, checkForRepaint=true)::'lambda'(bool)::operator()(bool) const at RenderLayer.cpp:1219:13
    frame #2: 0x0000000306bfca54 WebCore`void WebCore::RenderLayer::recursiveUpdateLayerPositions<(WebCore::RenderLayer::UpdateLayerPositionsMode)1>(this=0x000000035b758230, layoutIdentifier=0, flags={ size = 2 }, canUseSimplifiedRepaintPass=No) at RenderLayer.cpp:1271:5
    frame #3: 0x0000000306bfd160 WebCore`void WebCore::RenderLayer::recursiveUpdateLayerPositions<(WebCore::RenderLayer::UpdateLayerPositionsMode)1>(this=0x000000035b7580c0, layoutIdentifier=0, flags={ size = 2 }, canUseSimplifiedRepaintPass=No) at RenderLayer.cpp:1322:20
    frame #4: 0x0000000306bfd160 WebCore`void WebCore::RenderLayer::recursiveUpdateLayerPositions<(WebCore::RenderLayer::UpdateLayerPositionsMode)1>(this=0x000000035b74fe90, layoutIdentifier=0, flags={ size = 2 }, canUseSimplifiedRepaintPass=No) at RenderLayer.cpp:1322:20
    frame #5: 0x0000000306bfd160 WebCore`void WebCore::RenderLayer::recursiveUpdateLayerPositions<(WebCore::RenderLayer::UpdateLayerPositionsMode)1>(this=0x000000035b74fbb0, layoutIdentifier=0, flags={ size = 1 }, canUseSimplifiedRepaintPass=No) at RenderLayer.cpp:1322:20
    frame #6: 0x0000000306bfd160 WebCore`void WebCore::RenderLayer::recursiveUpdateLayerPositions<(WebCore::RenderLayer::UpdateLayerPositionsMode)1>(this=0x000000014e002010, layoutIdentifier=0, flags={ size = 1 }, canUseSimplifiedRepaintPass=No) at RenderLayer.cpp:1322:20
    frame #7: 0x0000000306bfd160 WebCore`void WebCore::RenderLayer::recursiveUpdateLayerPositions<(WebCore::RenderLayer::UpdateLayerPositionsMode)1>(this=0x000000014e000e80, layoutIdentifier=0, flags={ size = 1 }, canUseSimplifiedRepaintPass=No) at RenderLayer.cpp:1322:20
    frame #8: 0x0000000306bc7ae0 WebCore`void WebCore::RenderLayer::recursiveUpdateLayerPositions<(WebCore::RenderLayer::UpdateLayerPositionsMode)0>(this=0x000000014e000e80, layoutIdentifier=0, flags={ size = 1 }, canUseSimplifiedRepaintPass=No) at RenderLayer.cpp:1132:9
    frame #9: 0x0000000306bc78a4 WebCore`WebCore::RenderLayer::updateLayerPositionsAfterStyleChange(this=0x000000014e000e80) at RenderLayer.cpp:1045:5
    frame #10: 0x0000000305d0202c WebCore`WebCore::LocalFrameView::updateCompositingLayersAfterStyleChange(this=0x000000014e000110) at LocalFrameView.cpp:775:26
    frame #11: 0x0000000304a90ee4 WebCore`WebCore::Document::resolveStyle(this={ origin = , url = , inMainFrame = Detached, backForwardCacheState = NotInBackForwardCache }, type=Normal) at Document.cpp:2605:47
    frame #12: 0x0000000304a91a64 WebCore`WebCore::Document::updateStyleIfNeeded(this={ origin = , url = , inMainFrame = Detached, backForwardCacheState = NotInBackForwardCache }) at Document.cpp:2703:5
    frame #13: 0x0000000304a91e68 WebCore`WebCore::Document::updateLayout(this={ origin = , url = , inMainFrame = Detached, backForwardCacheState = NotInBackForwardCache }, layoutOptions={ size = 1 }, context=0x0000000000000000) at Document.cpp:2747:13
    frame #14: 0x0000000305d1a5a4 WebCore`WebCore::LocalFrameView::updateLayoutAndStyleIfNeededRecursive(this=0x000000014e000110, layoutOptions={ size = 0 }) at LocalFrameView.cpp:4914:44
    frame #15: 0x0000000305d8c41c WebCore`WebCore::Page::layoutIfNeeded(this=0x0000000115051300, layoutOptions={ size = 0 }) at Page.cpp:1829:15
    frame #16: 0x0000000305d8d1bc WebCore`WebCore::Page::updateRendering(this=0x0000000115051300) at Page.cpp:1991:5
    frame #17: 0x000000011ac1224c WebKit`WebKit::WebPage::updateRendering(this=0x000000015c00b808) at WebPage.cpp:4998:13
    frame #18: 0x0000000117d50038 WebKit`WebKit::RemoteLayerTreeDrawingArea::updateRendering(this=0x0000000115048840) at RemoteLayerTreeDrawingArea.mm:343:14
    frame #19: 0x0000000117d56ea4 WebKit`WebCore::Timer::Timer<WebKit::RemoteLayerTreeDrawingArea, WebKit::RemoteLayerTreeDrawingArea>(this=0x00000001150957e8)())::'lambda'()::operator()() const at Timer.h:162:13
    frame #20: 0x0000000117d56d9c WebKit`WTF::Detail::CallableWrapper<WebCore::Timer::Timer<WebKit::RemoteLayerTreeDrawingArea, WebKit::RemoteLayerTreeDrawingArea>(WebKit::RemoteLayerTreeDrawingArea&, void (WebKit::RemoteLayerTreeDrawingArea::*)())::'lambda'(), void>::call(this=0x00000001150957e0) at Function.h:53:39
    frame #21: 0x0000000116f89704 WebKit`WTF::Function<void ()>::operator()(this=0x0000000115048940) const at Function.h:82:35
    frame #22: 0x0000000117d5529c WebKit`WebCore::Timer::fired(this=0x0000000115048908) at Timer.h:194:9
    frame #23: 0x00000003060b3a58 WebCore`WebCore::ThreadTimers::sharedTimerFiredInternal(this=0x0000000115028810) at ThreadTimers.cpp:128:23
    frame #24: 0x00000003060bdf68 WebCore`WebCore::ThreadTimers::setSharedTimer(WebCore::SharedTimer*)::$_0::operator()(this=0x0000000115014a98) const at ThreadTimers.cpp:68:80
    frame #25: 0x00000003060bdf0c WebCore`WTF::Detail::CallableWrapper<WebCore::ThreadTimers::setSharedTimer(WebCore::SharedTimer*)::$_0, void>::call(this=0x0000000115014a90) at Function.h:53:39
    frame #26: 0x0000000300033614 WebCore`WTF::Function<void ()>::operator()(this=0x000000030a8a3d00) const at Function.h:82:35
    frame #27: 0x0000000306056cb0 WebCore`WebCore::MainThreadSharedTimer::fired(this=0x000000030a8a3cf8) at MainThreadSharedTimer.cpp:86:5
    frame #28: 0x0000000306179644 WebCore`WebCore::timerFired((null)=0x0000600000360600, (null)=0x0000000000000000) at MainThreadSharedTimerCF.cpp:85:40
    frame #29: 0x000000018ceda7a4 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 32

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