OptiX 7.1 illegal memory access issue

gistfile1.txt

// Issue
// * Allocate and provice insufficient data size(e.g. vertex data) fo GAS input.
// * Call `optixAccelBuild` with "correct" buffer size(e.g. `buildInput.triangleArray.numVertices`)
//    * Build GAS against invalid data but no error report at this time
// * Some memory object causes 'illegal memory access' error when freeing(also happens in CUDA driver API)

// How to reprocible
//
// OptiX 7.1 optixHair SDK sample
// Uncomment following in Util.h

//template <typename T>
//void copyToDevice( const std::vector<T>& source, CUdeviceptr destination )
//{
//    CUDA_CHECK( cudaMemcpy( reinterpret_cast<void*>( destination ), source.data(), source.size() * sizeof( T ), cudaMemcpyHostToDevice ) );
//}
//
//template <typename T>
//void createOnDevice( const std::vector<T>& source, CUdeviceptr* destination )
//{
//    CUDA_CHECK( cudaMalloc( reinterpret_cast<void**>( destination ), source.size() * sizeof( T ) ) );
//    copyToDevice( source, *destination );
//}


// => now createOnDevice, copyToDevice allocates the object of `std::vector` object itself(24 bytes in Linux/gcc) and send only 24 bytes of memory to the device. 

// Run optixHair will give

```
CUDA call (cudaFree( reinterpret_cast<void*>( m_buffer ) ) ) failed with error: 'an illegal memory access was encountered' (/home/syoyo/local/NVIDIA-OptiX-SDK-7.1.0-linux64-x86_64/SDK/optixHair/Head.cpp:197)
```