Unreal Engine Issues

UE-47677

(Undo Crash in BPs) [CrashReport] UE4Editor_Core!rml::internal::Block::findObjectSize()

(Undo Crash in BPs) [CrashReport] UE4Editor_Core!rml::internal::Block::findObjectSize()

Questions & Answers
Description

This is a trending crash in the 4.17 Preview. There was one occurrence of this callstack months ago in 4.15.1, but a number of recent ones in 4.17.

User Descriptions

  • I was pressing cltr+z severl times in my character blueprint to undo some changes I made in the blueprint.

Source Context

 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:75]
UE4Editor_Engine!UEdGraphPin::~UEdGraphPin() [edgraphpin.cpp:1210]
UE4Editor_Engine!FPinDeletionQueue::Tick() [edgraphpin.cpp:35]
UE4Editor_UnrealEd!FTickableEditorObject::TickObjects() [tickableeditorobject.h:21]
UE4Editor_UnrealEd!UEditorEngine::Tick() [editorengine.cpp:1417]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [unrealedengine.cpp:396]
UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3215]
UE4Editor!GuardedMain() [launch.cpp:166]
UE4Editor!GuardedMainWrapper() [launchwindows.cpp:134]
UE4Editor!WinMain() [launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [exe_common.inl:253]
kernel32!BaseThreadInitThunk()
ntdll!RtlUserThreadStart()
Community References

Why does the REMOVE method of map container remove elements have memory leaks?

How does TextureRenderTarget2D get TArray<uint8> type data?

UMG RichText not appear image when packaged

What is the cause of the packaging error falling back to 'GameUserSettings' in ue5?

In UE5.4, custom variables in the level blueprint cannot be set to default values, and the eyedropper tool is also unavailable, whereas in UE4.27, these features work normally.

What is the difference between Camera and CineCamera?

trying to launch uefn and it is crashing and saying pakchunk4522 is courrupt, anyone have the fix for this?

How to convert the datasmith scene file to BluePrint. Create animations in BluePrint.

Why does the volume fog disappear from a distant view?

How to debug HLSL code for errors in UE5?

Have Comments or More Details?

Head over to the existing Questions & Answers thread and let us know what's up.

0
Login to Vote
Won't Fix
ComponentUE - Gameplay - Blueprint
Affects Versions4.15, 4.17
CreatedJul 25, 2017
ResolvedAug 18, 2021
UpdatedAug 18, 2021
View Jira Issue