Unity Player - Access violation writing location 0x0000000000000038

I am getting a crash in the Unity Player when playing our game. I've looked into it but I'm at a loss as to what might be causing it.

This issue only happens in the Development build of the game. It does not happen in the editor or in the release build.

It is also very inconsistent, the timing of when it crashes changes, but I am able to repro it fairly consistently.

This is the stack trace when I catch it with the debugger:

> UnityPlayer.dll!block_remove() Unknown
UnityPlayer.dll!tlsf_free() Unknown
UnityPlayer.dll!DynamicHeapAllocator<class LowLevelAllocator>::TryDeallocate(void *) Unknown
UnityPlayer.dll!DelayedPointerDeletionManager::CleanupPendingMainThreadPointers(void) Unknown
UnityPlayer.dll!DualThreadAllocator<class DynamicHeapAllocator<class LowLevelAllocator> >::Allocate(unsigned __int64,int) Unknown
UnityPlayer.dll!MemoryManager::Allocate(unsigned __int64,unsigned __int64,struct MemLabelId const &,enum AllocateOptions,char const *,int) Unknown
UnityPlayer.dll!MemoryManager::Reallocate(void *,unsigned __int64,unsigned __int64,struct MemLabelId const &,enum AllocateOptions,char const *,int) Unknown
UnityPlayer.dll!realloc_internal(void *,unsigned __int64,unsigned __int64,struct MemLabelId const &,enum AllocateOptions,char const *,int) Unknown
UnityPlayer.dll!dynamic_array_detail::dynamic_array_data::grow(unsigned __int64,unsigned __int64) Unknown
UnityPlayer.dll!CanvasBatchIntermediateRenderer::AddSubBatch(struct DrawBuffersRange const &,class ShaderPropertySheet const *) Unknown
UnityPlayer.dll!UI::Canvas:rawIntermediateRenderer(struct UI::Batch &,class Matrix4x4f,int,class Camera *,unsigned short) Unknown
UnityPlayer.dll!UI::Canvas::EmitWorldGeometry(class Camera *,unsigned short &,bool) Unknown
UnityPlayer.dll!UI::CanvasManager::EmitWorldScreenspaceCameraGeometry(enum UI::CanvasManager::CanvasCameraRenderType,int) Unknown
UnityPlayer.dll!`UI::InitializeCanvasManager'::`2'::UIEventsCanvasmanagerEmitOnScreenGeometryRegistrator::Forward() Unknown
UnityPlayer.dll!`InitPlayerLoopCallbacks'::`2':ostLateUpdatePlayerEmitCanvasGeometryRegistrator::Forward() Unknown
UnityPlayer.dll!ExecutePlayerLoop(struct NativePlayerLoopSystem *) Unknown
UnityPlayer.dll!ExecutePlayerLoop(struct NativePlayerLoopSystem *) Unknown
UnityPlayer.dll!PlayerLoop(void) Unknown
UnityPlayer.dll!PerformMainLoop() Unknown
UnityPlayer.dll!MainMessageLoop() Unknown
UnityPlayer.dll!UnityMainImpl(struct HINSTANCE__ *,struct HINSTANCE__ *,wchar_t *,int) Unknown
UnityPlayer.dll!UnityMain() Unknown
Game.exe!__scrt_common_main_seh() Unknown
kernel32.dll!BaseThreadInitThunk() Unknown
ntdll.dll!RtlUserThreadStart() Unknown


The stack trace is always the same, regardless of the timing of when it happens. Can anyone help point me in the right direction? I don't know how else to proceed with figuring this one out.

 

Any help with this one would be greatly appreciated... I am unsure what steps I can take next.

 

We are on an older version of unity right now (2018.3.0f)
But I updated to 2019.1 and this crash still happens, so it occurs in the latest version.
I have no unsafe code in any of my C# scripts. I have also disabled all threading that I was doing, but it still happens.