FMallocTBB::Realloc

hi. i have problem with debug my game.
after 2 minutes of starting game, visual studio show break point in line 70 in MallocTBB class and crash engine .
i have many code and many classes and i dont know where is problem.

void* FMallocTBB::Realloc( void* Ptr, SIZE_T NewSize, uint32 Alignment )
{
	IncrementTotalReallocCalls();

	MEM_TIME(MemTime -= FPlatformTime::Seconds())
#if UE_BUILD_DEBUG || UE_BUILD_DEVELOPMENT
	SIZE_T OldSize = 0;
	if (Ptr)
	{
		OldSize = scalable_msize(Ptr);
		if (NewSize < OldSize)
		{
			FMemory::Memset((uint8*)Ptr + NewSize, DEBUG_FILL_FREED, OldSize - NewSize); 
		}
	}
#endif
	void* NewPtr = NULL;
	if (Alignment != DEFAULT_ALIGNMENT)
	{
		Alignment = FMath::Max(NewSize >= 16 ? (uint32)16 : (uint32)8, Alignment);
		NewPtr = scalable_aligned_realloc(Ptr, NewSize, Alignment);
	}
	else
	{
		NewPtr = scalable_realloc(Ptr, NewSize);
	}
#if UE_BUILD_DEBUG || UE_BUILD_DEVELOPMENT
	if (NewPtr && NewSize > OldSize )
	{
		FMemory::Memset((uint8*)NewPtr + OldSize, DEBUG_FILL_NEW, NewSize - OldSize); 
	}
#endif
	if( !NewPtr && NewSize )
	{
		OutOfMemory(NewSize, Alignment);
	}
	MEM_TIME(MemTime += FPlatformTime::Seconds())
	return NewPtr;
}

line 70 is :

OldSize = scalable_msize(Ptr);

please help me for fix this problem.
sorry for my bad english.

fatal error window will be Shown in Launch.

please help me for fix this problem.