Description

This is a trending crash coming out of the 4.18 Previews.

User Descriptions

  • trying to use media framework in mp
  • seemingly random crashes, mostly when interacting with blueprint editor
  • ctrl drag float input pin in function

Source Context

 119       }
  120       
  121       void FMallocTBB::Free( void* Ptr )
  122       {
  123       	if( !Ptr )
  124       	{
  125       		return;
  126       	}
  127       	MEM_TIME(MemTime -= FPlatformTime::Seconds())
  128       #if UE_BUILD_DEBUG || UE_BUILD_DEVELOPMENT
  129 ***** 	FMemory::Memset(Ptr, DEBUG_FILL_FREED, scalable_msize(Ptr)); 
  130       #endif
  131       	IncrementTotalFreeCalls();
  132       	scalable_free(Ptr);
  133       
  134       	MEM_TIME(MemTime += FPlatformTime::Seconds())
  135       }
Steps to Reproduce

repro steps currently unknown

Callstack
Access violation - code c0000005 (first/second chance not available)

UE4Editor_Core!rml::internal::Block::findObjectSize()
UE4Editor_Core!FMallocTBB::Free() [malloctbb.cpp:130]
UE4Editor_Core!FMemory::Free() [fmemory.inl:76]
UE4Editor_GraphEditor!FGraphActionNode::~FGraphActionNode()
UE4Editor_GraphEditor!SharedPointerInternals::TReferenceControllerWithDeleter<FGraphActionNode,SharedPointerInternals::DefaultDeleter<FGraphActionNode> >::DestroyObject() [sharedpointerinternals.h:116]
UE4Editor_GraphEditor!SListView<TSharedPtr<FGraphActionNode,0> >::FWidgetGenerator::OnEndGenerationPass() [slistview.h:536]
UE4Editor_GraphEditor!SListView<TSharedPtr<FGraphActionNode,0> >::ReGenerateItems() [slistview.h:983]
UE4Editor_Slate!STableViewBase::Tick() [stableviewbase.cpp:249]
UE4Editor_GraphEditor!STreeView<TSharedPtr<FGraphActionNode,0> >::Tick() [streeview.h:466]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:873]
UE4Editor_SlateCore!SOverlay::OnPaint() [soverlay.cpp:97]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_Slate!SBorder::OnPaint() [sborder.cpp:85]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SOverlay::OnPaint() [soverlay.cpp:97]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_Slate!SSplitter::OnPaint() [ssplitter.cpp:167]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_Slate!SSplitter::OnPaint() [ssplitter.cpp:167]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SOverlay::OnPaint() [soverlay.cpp:97]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_Slate!SBorder::OnPaint() [sborder.cpp:85]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SOverlay::OnPaint() [soverlay.cpp:97]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_SlateCore!SPanel::OnPaint() [spanel.cpp:12]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() [scompoundwidget.cpp:35]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() [spanel.cpp:31]
UE4Editor_Slate!SSplitter::OnPaint() [ssplitter.cpp:167]
UE4Editor_SlateCore!SWidget::Paint() [swidget.cpp:899]

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Cannot Reproduce
ComponentUE - Rendering - Materials
Affects Versions4.18
CreatedSep 28, 2017
ResolvedJul 2, 2018
UpdatedNov 2, 2021