kmsan_dma_load
kmsan_dma_load(dmam, buf, buflen, KMSAN_DMA_LINEAR);
kmsan_dma_load(dmam, chain, 0, KMSAN_DMA_MBUF);
kmsan_dma_load(dmam, uio, 0, KMSAN_DMA_UIO);
kmsan_dma_load(dmam, NULL, 0, KMSAN_DMA_RAW);
void kmsan_dma_load(bus_dmamap_t, void *, bus_size_t, int);