Unreal Engine Issues and Bug Tracker (UE-93022)

Description

Crash occurs when user call Destroy Actor on a Geometry Collection Actor. This seems to only occur while the actor is simulating. If called while on the ground, it doesn't seem to occur.

Steps to Reproduce

Open any project in editor.
Add a cube static mesh to the level.
Open the Fracture Tools.
Create a new Geometry Collection from the cube in the level.
Raise the cube (which should now be a Geo Collection) so it will be falling for a while.
Open the level blueprint.
Call Destroy Actor for the Geometry Collection Actor and connect it to Event Begin Play, with a small delay (such as 0.1 seconds).
Compile.
Play in viewport.

RESULT

Crash

Callstack

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000094

UE4Editor-ChaosSolvers.dll!TGeometryCollectionPhysicsProxy<Chaos::FRewindableEvolutionTraits>::InitializeBodiesPT() [D:\Main\Engine\Source\Runtime\Experimental\ChaosSolvers\Private\PhysicsProxy\GeometryCollectionPhysicsProxy.cpp:811]
UE4Editor-ChaosSolvers.dll!FPhysicsSolverAdvanceTask::StepSolver<Chaos::TPBDRigidsSolver<Chaos::FRewindableEvolutionTraits> >() [D:\Main\Engine\Source\Runtime\Experimental\ChaosSolvers\Private\Framework\PhysicsTickTask.cpp:213]
UE4Editor-ChaosSolvers.dll!FPhysicsSolverAdvanceTask::DoTask() [D:\Main\Engine\Source\Runtime\Experimental\ChaosSolvers\Private\Framework\PhysicsTickTask.cpp:194]
UE4Editor-ChaosSolvers.dll!TGraphTask<FPhysicsSolverAdvanceTask>::ExecuteTask() [D:\Main\Engine\Source\Runtime\Core\Public\Async\TaskGraphInterfaces.h:855]
UE4Editor-Core.dll!FTaskThreadAnyThread::ProcessTasks() [D:\Main\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:1068]
UE4Editor-Core.dll!FTaskThreadAnyThread::ProcessTasksUntilQuit() [D:\Main\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:891]
UE4Editor-Core.dll!FTaskThreadAnyThread::Run() [D:\Main\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:968]
UE4Editor-Core.dll!FRunnableThreadWin::Run() [D:\Main\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:86]
UE4Editor-Core.dll!FRunnableThreadWin::GuardedRun() [D:\Main\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:35]
KERNEL32.DLL!UnknownFunction []
ntdll.dll!UnknownFunction []

4.25 Callstack:

atal error: [File:E:/UE4.25_re/UE-4.25.0-re/Engine/Source/Runtime/Core/Private/Windows/WindowsPlatformMisc.cpp] [Line: 475]
Pure virtual function being called


KERNELBASE.dll!UnknownFunction []
ChaosDestructionDemoEditor-Core.dll!ReportAssert() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Core\Private\Windows\WindowsPlatformCrashContext.cpp:1451]
ChaosDestructionDemoEditor-Core.dll!FWindowsErrorOutputDevice::Serialize() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Core\Private\Windows\WindowsErrorOutputDevice.cpp:78]
ChaosDestructionDemoEditor-Core.dll!FOutputDevice::LogfImpl() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Core\Private\Misc\OutputDevice.cpp:61]
ChaosDestructionDemoEditor-Core.dll!PureCallHandler() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Core\Private\Windows\WindowsPlatformMisc.cpp:477]
VCRUNTIME140.dll!UnknownFunction []
ChaosDestructionDemoEditor-ChaosSolvers.dll!FGeometryCollectionPhysicsProxy::PullFromPhysicsState() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Experimental\ChaosSolvers\Private\PhysicsProxy\GeometryCollectionPhysicsProxy.cpp:1638]
ChaosDestructionDemoEditor-Engine.dll!FPhysScene_ChaosInterface::SyncBodies() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Engine\Private\PhysicsEngine\Experimental\PhysScene_Chaos.cpp:2170]
ChaosDestructionDemoEditor-Engine.dll!FPhysScene_ChaosInterface::EndFrame() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Engine\Private\PhysicsEngine\Experimental\PhysScene_Chaos.cpp:2015]
ChaosDestructionDemoEditor-Engine.dll!TBaseUObjectMethodDelegateInstance<0,UWorld,void __cdecl(void)>::ExecuteIfSafe() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:716]
ChaosDestructionDemoEditor-Engine.dll!TGraphTask<FSimpleDelegateGraphTask>::ExecuteTask() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Core\Public\Async\TaskGraphInterfaces.h:849]
ChaosDestructionDemoEditor-Core.dll!FNamedTaskThread::ProcessTasksNamedThread() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:692]
ChaosDestructionDemoEditor-Core.dll!FNamedTaskThread::ProcessTasksUntilQuit() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:587]
ChaosDestructionDemoEditor-Core.dll!FTaskGraphImplementation::WaitUntilTasksComplete() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:1478]
ChaosDestructionDemoEditor-Engine.dll!FTickTaskSequencer::ReleaseTickGroup() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Engine\Private\TickTaskManager.cpp:558]
ChaosDestructionDemoEditor-Engine.dll!FTickTaskManager::RunTickGroup() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Engine\Private\TickTaskManager.cpp:1523]
ChaosDestructionDemoEditor-Engine.dll!UWorld::RunTickGroup() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Engine\Private\LevelTick.cpp:783]
ChaosDestructionDemoEditor-Engine.dll!UWorld::Tick() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Engine\Private\LevelTick.cpp:1583]
ChaosDestructionDemoEditor-UnrealEd.dll!UEditorEngine::Tick() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Editor\UnrealEd\Private\EditorEngine.cpp:1693]
ChaosDestructionDemoEditor-UnrealEd.dll!UUnrealEdEngine::Tick() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Editor\UnrealEd\Private\UnrealEdEngine.cpp:414]
ChaosDestructionDemoEditor.exe!FEngineLoop::Tick() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:4850]
ChaosDestructionDemoEditor.exe!GuardedMain() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Launch\Private\Launch.cpp:169]
ChaosDestructionDemoEditor.exe!GuardedMainWrapper() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:137]
ChaosDestructionDemoEditor.exe!WinMain() [E:\UE4.25_re\UE-4.25.0-re\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:268]
ChaosDestructionDemoEditor.exe!__scrt_common_main_seh() [d:\agent\_work\5\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
KERNEL32.DLL!UnknownFunction []
ntdll.dll!UnknownFunction []

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Fixed

Component	UE - Simulation - Physics - Destruction
Affects Versions	4.26
Target Fix	4.26

Fix Commit	14596601
Release Commit	14730708

Created	May 12, 2020
Resolved	Nov 12, 2020
Updated	Apr 28, 2021

View Jira Issue

UE-93022

Crash calling destroy actor for Geometry Collection while it's simulating

Crash calling destroy actor for Geometry Collection while it's simulating

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