P2: Important When scrolling up and down a bit on this page with a debug build of the current dev, I get:
[14930:14930:0313/182757:FATAL:scroll_offset_animation_curve.cc(220)] Check failed: t == last_retarget_.InSecondsF() (23341.7 vs. 0) #0 0x7f192121694c base::debug::StackTrace::StackTrace() #1 0x7f1921256619 logging::LogMessage::~LogMessage() #2 0x7f1922ff9a2e cc::ScrollOffsetAnimationCurve::UpdateTarget() #3 0x7f1928e5b31a blink::CompositorScrollOffsetAnimationCurve::updateTarget() #4 0x7f1928e58eae blink::ScrollAnimator::willAnimateToOffset() #5 0x7f1928e58c03 blink::ScrollAnimator::userScroll() #6 0x7f192630f4bb blink::RootFrameViewport::userScroll() #7 0x7f1926b2bf89 blink::ViewportScrollCallback::performNativeScroll() #8 0x7f1926b2bbcb blink::ViewportScrollCallback::handleEvent() #9 0x7f1925e97ac0 blink::Element::callApplyScroll() #10 0x7f1925e97489 blink::Element::nativeDistributeScroll() #11 0x7f1925e9759b blink::Element::callDistributeScroll() #12 0x7f1926b1299d blink::ScrollState::distributeToScrollChainDescendant() #13 0x7f19266508f9 blink::ScrollManager::customizedScroll() #14 0x7f19266511d9 blink::ScrollManager::handleGestureScrollUpdate() #15 0x7f1926651d1c blink::ScrollManager::handleGestureScrollEvent() #16 0x7f192662c3f4 blink::EventHandler::handleGestureScrollEvent() #17 0x7f192551de62 blink::WebViewImpl::handleGestureEvent() #18 0x7f19255a884e blink::PageWidgetDelegate::handleInputEvent() #19 0x7f1925525044 blink::WebViewImpl::handleInputEvent() #20 0x7f1925519817 blink::WebViewFrameWidget::handleInputEvent() #21 0x7f1924f46a4c content::RenderWidgetInputHandler::HandleInputEvent() #22 0x7f1924b6b222 content::RenderWidget::OnHandleInputEvent() #23 0x7f1924b82b28 _ZN4base20DispatchToMethodImplIPN7content12RenderWidgetEMS2_FvPKN5blink13WebInputEventERKN2ui11LatencyInfoENS1_22InputEventDispatchTypeEERKSt5tupleIJS7_S9_SC_EEJLm0ELm1ELm2EEEEvRKT_T0_OT1_NS_13IndexSequenceIJXspT2_EEEE #24 0x7f1924b7e66d _ZN4base16DispatchToMethodIPN7content12RenderWidgetEMS2_FvPKN5blink13WebInputEventERKN2ui11LatencyInfoENS1_22InputEventDispatchTypeEERKSt5tupleIJS7_S9_SC_EEEEvRKT_T0_OT1_ #25 0x7f1924b7a5e9 _ZN3IPC16DispatchToMethodIN7content12RenderWidgetEMS2_FvPKN5blink13WebInputEventERKN2ui11LatencyInfoENS1_22InputEventDispatchTypeEEvSt5tupleIJS6_S8_SB_EEEEvPT_T0_PT1_RKT2_ #26 0x7f1924b74921 _ZN3IPC8MessageTI30InputMsg_HandleInputEvent_MetaSt5tupleIJPKN5blink13WebInputEventEN2ui11LatencyInfoEN7content22InputEventDispatchTypeEEEvE8DispatchINS9_12RenderWidgetESE_vMSE_FvS6_RKS8_SA_EEEbPKNS_7MessageEPT_PT0_PT1_T2_ #27 0x7f1924b69353 content::RenderWidget::OnMessageReceived() #28 0x7f1924b3e3d6 content::RenderViewImpl::OnMessageReceived() #29 0x7f1927f1a5c5 IPC::MessageRouter::RouteMessage() #30 0x7f192492e0b0 content::ChildThreadImpl::ChildThreadMessageRouter::RouteMessage() #31 0x7f1927f1a555 IPC::MessageRouter::OnMessageReceived() #32 0x7f1924931f56 content::ChildThreadImpl::OnMessageReceived() #33 0x7f1924b30561 _ZN4base8internal13FunctorTraitsIMN7content15ChildThreadImplEFbRKN3IPC7MessageEEvE6InvokeIPNS2_16RenderThreadImplEJS7_EEEbS9_OT_DpOT0_ #34 0x7f1924b2e1ef _ZN4base8internal13FunctorTraitsINS0_18IgnoreResultHelperIMN7content15ChildThreadImplEFbRKN3IPC7MessageEEEEvE6InvokeIRKSB_JPNS3_16RenderThreadImplES8_EEEvOT_DpOT0_ #35 0x7f1924b2b1ab _ZN4base8internal12InvokeHelperILb0EvE8MakeItSoIRKNS0_18IgnoreResultHelperIMN7content15ChildThreadImplEFbRKN3IPC7MessageEEEEJPNS5_16RenderThreadImplESA_EEEvOT_DpOT0_ #36 0x7f1924b268b9 _ZN4base8internal7InvokerINS0_9BindStateINS0_18IgnoreResultHelperIMN7content15ChildThreadImplEFbRKN3IPC7MessageEEEEJNS0_17UnretainedWrapperINS4_16RenderThreadImplEEEEEEFvS9_EE7RunImplIRKSC_RKSt5tupleIJSF_EEJLm0EEEEvOT_OT0_NS_13IndexSequenceIJXspT1_EEEES9_ #37 0x7f1924b1f9d8 _ZN4base8internal7InvokerINS0_9BindStateINS0_18IgnoreResultHelperIMN7content15ChildThreadImplEFbRKN3IPC7MessageEEEEJNS0_17UnretainedWrapperINS4_16RenderThreadImplEEEEEEFvS9_EE3RunEPNS0_13BindStateBaseES9_ #38 0x7f1924b26ab6 base::internal::RunMixin<>::Run() #39 0x7f1924b1fadb base::CancelableCallback<>::Forward() #40 0x7f1924b318be _ZN4base8internal13FunctorTraitsIMNS_18CancelableCallbackIFvRKN3IPC7MessageEEEEKFvS6_EvE6InvokeIRKNS_7WeakPtrIS8_EEJS6_EEEvSA_OT_DpOT0_ #41 0x7f1924b306d2 _ZN4base8internal12InvokeHelperILb1EvE8MakeItSoIRKMNS_18CancelableCallbackIFvRKN3IPC7MessageEEEEKFvS8_ERKNS_7WeakPtrISA_EEJS8_EEEvOT_OT0_DpOT1_ #42 0x7f1924b2e2ab _ZN4base8internal7InvokerINS0_9BindStateIMNS_18CancelableCallbackIFvRKN3IPC7MessageEEEEKFvS7_EJNS_7WeakPtrIS9_EEEEES8_E7RunImplIRKSB_RKSt5tupleIJSD_EEJLm0EEEEvOT_OT0_NS_13IndexSequenceIJXspT1_EEEES7_ #43 0x7f1924b2b27a _ZN4base8internal7InvokerINS0_9BindStateIMNS_18CancelableCallbackIFvRKN3IPC7MessageEEEEKFvS7_EJNS_7WeakPtrIS9_EEEEES8_E3RunEPNS0_13BindStateBaseES7_ #44 0x7f1924b26ab6 base::internal::RunMixin<>::Run() #45 0x7f1924f28367 content::InputEventFilter::HandleEventOnMainThread() #46 0x7f1924f3d967 content::MainThreadEventQueue::DispatchInFlightEvent() #47 0x7f1924f3db57 content::MainThreadEventQueue::DispatchSingleEvent() #48 0x7f1924f42b9e _ZN4base8internal13FunctorTraitsIMN7content20MainThreadEventQueueEFvvEvE6InvokeIRK13scoped_refptrIS3_EJEEEvS5_OT_DpOT0_ #49 0x7f1924f424e6 _ZN4base8internal12InvokeHelperILb0EvE8MakeItSoIRKMN7content20MainThreadEventQueueEFvvEJRK13scoped_refptrIS5_EEEEvOT_DpOT0_ #50 0x7f1924f417f8 _ZN4base8internal7InvokerINS0_9BindStateIMN7content20MainThreadEventQueueEFvvEJ13scoped_refptrIS4_EEEEFvvEE7RunImplIRKS6_RKSt5tupleIJS8_EEJLm0EEEEvOT_OT0_NS_13IndexSequenceIJXspT1_EEEE #51 0x7f1924f40c64 _ZN4base8internal7InvokerINS0_9BindStateIMN7content20MainThreadEventQueueEFvvEJ13scoped_refptrIS4_EEEEFvvEE3RunEPNS0_13BindStateBaseE #52 0x7f191e955da1 base::internal::RunMixin<>::Run() #53 0x7f19214599a1 base::debug::TaskAnnotator::RunTask() #54 0x7f19253eb213 blink::scheduler::TaskQueueManager::ProcessTaskFromWorkQueue() #55 0x7f19253ea6ff blink::scheduler::TaskQueueManager::DoWork() #56 0x7f19253fb110 _ZN4base8internal13FunctorTraitsIMN5blink9scheduler16TaskQueueManagerEFvNS_9TimeTicksEbEvE6InvokeIRKNS_7WeakPtrIS4_EEJRKS5_RKbEEEvS7_OT_DpOT0_ #57 0x7f19253f975e _ZN4base8internal12InvokeHelperILb1EvE8MakeItSoIRKMN5blink9scheduler16TaskQueueManagerEFvNS_9TimeTicksEbERKNS_7WeakPtrIS6_EEJRKS7_RKbEEEvOT_OT0_DpOT1_ #58 0x7f19253f5efb _ZN4base8internal7InvokerINS0_9BindStateIMN5blink9scheduler16TaskQueueManagerEFvNS_9TimeTicksEbEJNS_7WeakPtrIS5_EES6_bEEEFvvEE7RunImplIRKS8_RKSt5tupleIJSA_S6_bEEJLm0ELm1ELm2EEEEvOT_OT0_NS_13IndexSequenceIJXspT1_EEEE #59 0x7f19253f3058 _ZN4base8internal7InvokerINS0_9BindStateIMN5blink9scheduler16TaskQueueManagerEFvNS_9TimeTicksEbEJNS_7WeakPtrIS5_EES6_bEEEFvvEE3RunEPNS0_13BindStateBaseE #60 0x7f191e955da1 base::internal::RunMixin<>::Run() #61 0x7f19214599a1 base::debug::TaskAnnotator::RunTask() Received signal 6 #0 0x7f192121694c base::debug::StackTrace::StackTrace() #1 0x7f192121570a base::debug::(anonymous namespace)::StackDumpSignalHandler() #2 0x7f191be0bfe0 <unknown> #3 0x7f191b1d7a10 __GI_raise #4 0x7f191b1d913a __GI_abort #5 0x7f192121499e base::debug::(anonymous namespace)::DebugBreak() #6 0x7f19212149cc base::debug::BreakDebugger() #7 0x7f1921256972 logging::LogMessage::~LogMessage() #8 0x7f1922ff9a2e cc::ScrollOffsetAnimationCurve::UpdateTarget() #9 0x7f1928e5b31a blink::CompositorScrollOffsetAnimationCurve::updateTarget() #10 0x7f1928e58eae blink::ScrollAnimator::willAnimateToOffset() #11 0x7f1928e58c03 blink::ScrollAnimator::userScroll() #12 0x7f192630f4bb blink::RootFrameViewport::userScroll() #13 0x7f1926b2bf89 blink::ViewportScrollCallback::performNativeScroll() #14 0x7f1926b2bbcb blink::ViewportScrollCallback::handleEvent() #15 0x7f1925e97ac0 blink::Element::callApplyScroll() #16 0x7f1925e97489 blink::Element::nativeDistributeScroll() #17 0x7f1925e9759b blink::Element::callDistributeScroll() #18 0x7f1926b1299d blink::ScrollState::distributeToScrollChainDescendant() #19 0x7f19266508f9 blink::ScrollManager::customizedScroll() #20 0x7f19266511d9 blink::ScrollManager::handleGestureScrollUpdate() #21 0x7f1926651d1c blink::ScrollManager::handleGestureScrollEvent() #22 0x7f192662c3f4 blink::EventHandler::handleGestureScrollEvent() #23 0x7f192551de62 blink::WebViewImpl::handleGestureEvent() #24 0x7f19255a884e blink::PageWidgetDelegate::handleInputEvent() #25 0x7f1925525044 blink::WebViewImpl::handleInputEvent() #26 0x7f1925519817 blink::WebViewFrameWidget::handleInputEvent() #27 0x7f1924f46a4c content::RenderWidgetInputHandler::HandleInputEvent() #28 0x7f1924b6b222 content::RenderWidget::OnHandleInputEvent() #29 0x7f1924b82b28 _ZN4base20DispatchToMethodImplIPN7content12RenderWidgetEMS2_FvPKN5blink13WebInputEventERKN2ui11LatencyInfoENS1_22InputEventDispatchTypeEERKSt5tupleIJS7_S9_SC_EEJLm0ELm1ELm2EEEEvRKT_T0_OT1_NS_13IndexSequenceIJXspT2_EEEE #30 0x7f1924b7e66d _ZN4base16DispatchToMethodIPN7content12RenderWidgetEMS2_FvPKN5blink13WebInputEventERKN2ui11LatencyInfoENS1_22InputEventDispatchTypeEERKSt5tupleIJS7_S9_SC_EEEEvRKT_T0_OT1_ #31 0x7f1924b7a5e9 _ZN3IPC16DispatchToMethodIN7content12RenderWidgetEMS2_FvPKN5blink13WebInputEventERKN2ui11LatencyInfoENS1_22InputEventDispatchTypeEEvSt5tupleIJS6_S8_SB_EEEEvPT_T0_PT1_RKT2_ #32 0x7f1924b74921 _ZN3IPC8MessageTI30InputMsg_HandleInputEvent_MetaSt5tupleIJPKN5blink13WebInputEventEN2ui11LatencyInfoEN7content22InputEventDispatchTypeEEEvE8DispatchINS9_12RenderWidgetESE_vMSE_FvS6_RKS8_SA_EEEbPKNS_7MessageEPT_PT0_PT1_T2_ #33 0x7f1924b69353 content::RenderWidget::OnMessageReceived() #34 0x7f1924b3e3d6 content::RenderViewImpl::OnMessageReceived() #35 0x7f1927f1a5c5 IPC::MessageRouter::RouteMessage() #36 0x7f192492e0b0 content::ChildThreadImpl::ChildThreadMessageRouter::RouteMessage() #37 0x7f1927f1a555 IPC::MessageRouter::OnMessageReceived() #38 0x7f1924931f56 content::ChildThreadImpl::OnMessageReceived() #39 0x7f1924b30561 _ZN4base8internal13FunctorTraitsIMN7content15ChildThreadImplEFbRKN3IPC7MessageEEvE6InvokeIPNS2_16RenderThreadImplEJS7_EEEbS9_OT_DpOT0_ #40 0x7f1924b2e1ef _ZN4base8internal13FunctorTraitsINS0_18IgnoreResultHelperIMN7content15ChildThreadImplEFbRKN3IPC7MessageEEEEvE6InvokeIRKSB_JPNS3_16RenderThreadImplES8_EEEvOT_DpOT0_ #41 0x7f1924b2b1ab _ZN4base8internal12InvokeHelperILb0EvE8MakeItSoIRKNS0_18IgnoreResultHelperIMN7content15ChildThreadImplEFbRKN3IPC7MessageEEEEJPNS5_16RenderThreadImplESA_EEEvOT_DpOT0_ #42 0x7f1924b268b9 _ZN4base8internal7InvokerINS0_9BindStateINS0_18IgnoreResultHelperIMN7content15ChildThreadImplEFbRKN3IPC7MessageEEEEJNS0_17UnretainedWrapperINS4_16RenderThreadImplEEEEEEFvS9_EE7RunImplIRKSC_RKSt5tupleIJSF_EEJLm0EEEEvOT_OT0_NS_13IndexSequenceIJXspT1_EEEES9_ #43 0x7f1924b1f9d8 _ZN4base8internal7InvokerINS0_9BindStateINS0_18IgnoreResultHelperIMN7content15ChildThreadImplEFbRKN3IPC7MessageEEEEJNS0_17UnretainedWrapperINS4_16RenderThreadImplEEEEEEFvS9_EE3RunEPNS0_13BindStateBaseES9_ #44 0x7f1924b26ab6 base::internal::RunMixin<>::Run() #45 0x7f1924b1fadb base::CancelableCallback<>::Forward() #46 0x7f1924b318be _ZN4base8internal13FunctorTraitsIMNS_18CancelableCallbackIFvRKN3IPC7MessageEEEEKFvS6_EvE6InvokeIRKNS_7WeakPtrIS8_EEJS6_EEEvSA_OT_DpOT0_ #47 0x7f1924b306d2 _ZN4base8internal12InvokeHelperILb1EvE8MakeItSoIRKMNS_18CancelableCallbackIFvRKN3IPC7MessageEEEEKFvS8_ERKNS_7WeakPtrISA_EEJS8_EEEvOT_OT0_DpOT1_ #48 0x7f1924b2e2ab _ZN4base8internal7InvokerINS0_9BindStateIMNS_18CancelableCallbackIFvRKN3IPC7MessageEEEEKFvS7_EJNS_7WeakPtrIS9_EEEEES8_E7RunImplIRKSB_RKSt5tupleIJSD_EEJLm0EEEEvOT_OT0_NS_13IndexSequenceIJXspT1_EEEES7_ #49 0x7f1924b2b27a _ZN4base8internal7InvokerINS0_9BindStateIMNS_18CancelableCallbackIFvRKN3IPC7MessageEEEEKFvS7_EJNS_7WeakPtrIS9_EEEEES8_E3RunEPNS0_13BindStateBaseES7_ #50 0x7f1924b26ab6 base::internal::RunMixin<>::Run() #51 0x7f1924f28367 content::InputEventFilter::HandleEventOnMainThread() #52 0x7f1924f3d967 content::MainThreadEventQueue::DispatchInFlightEvent() #53 0x7f1924f3db57 content::MainThreadEventQueue::DispatchSingleEvent() #54 0x7f1924f42b9e _ZN4base8internal13FunctorTraitsIMN7content20MainThreadEventQueueEFvvEvE6InvokeIRK13scoped_refptrIS3_EJEEEvS5_OT_DpOT0_ #55 0x7f1924f424e6 _ZN4base8internal12InvokeHelperILb0EvE8MakeItSoIRKMN7content20MainThreadEventQueueEFvvEJRK13scoped_refptrIS5_EEEEvOT_DpOT0_ #56 0x7f1924f417f8 _ZN4base8internal7InvokerINS0_9BindStateIMN7content20MainThreadEventQueueEFvvEJ13scoped_refptrIS4_EEEEFvvEE7RunImplIRKS6_RKSt5tupleIJS8_EEJLm0EEEEvOT_OT0_NS_13IndexSequenceIJXspT1_EEEE #57 0x7f1924f40c64 _ZN4base8internal7InvokerINS0_9BindStateIMN7content20MainThreadEventQueueEFvvEJ13scoped_refptrIS4_EEEEFvvEE3RunEPNS0_13BindStateBaseE #58 0x7f191e955da1 base::internal::RunMixin<>::Run() #59 0x7f19214599a1 base::debug::TaskAnnotator::RunTask() #60 0x7f19253eb213 blink::scheduler::TaskQueueManager::ProcessTaskFromWorkQueue() #61 0x7f19253ea6ff blink::scheduler::TaskQueueManager::DoWork() r8: 0000000000000000 r9: 00007fff8f201e80 r10: 0000000000000008 r11: 0000000000000246 r12: 0000000000001a21 r13: 00007fff8f204cb8 r14: 0000000000000000 r15: 0000000000000000 di: 0000000000000002 si: 00007fff8f201e80 bp: 00007fff8f2020d0 bx: 0000000000000006 dx: 0000000000000000 ax: 0000000000000000 cx: 00007f191b1d7a10 sp: 00007fff8f201e80 ip: 00007f191b1d7a10 efl: 0000000000000246 cgf: 002b000000000033 erf: 0000000000000000 trp: 0000000000000000 msk: 0000000000000000 cr2: 0000000000000000 [end of stack trace] Render process exited with code 256 (abnormal exit)