static enum b43_dmatype dma_mask_to_engine_type(u64 dmamask)
{
	if (dmamask == DMA_BIT_MASK(30))
		return B43_DMA_30BIT;
	if (dmamask == DMA_BIT_MASK(32))
		return B43_DMA_32BIT;
	if (dmamask == DMA_BIT_MASK(64))
		return B43_DMA_64BIT;
	B43_WARN_ON(1);
	return B43_DMA_30BIT;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.