>
> Could you try this?
(resending without HTML, sorry for inconvenience).
Hi Xuan,
What kernel revision does this patch apply to? I tried it against
v6.10-rc2, and only the first hunk applied.
However this seems to fix the problem, at least the kernel boots
without warnings now.
> Thanks.
>
> diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
> index 37c9c5b55864..cb280b66c7a2 100644
> --- a/drivers/virtio/virtio_ring.c
> +++ b/drivers/virtio/virtio_ring.c
> @@ -3119,8 +3119,10 @@ dma_addr_t virtqueue_dma_map_single_attrs(struct virtqueue *_vq, void *ptr,
> {
> struct vring_virtqueue *vq = to_vvq(_vq);
>
> - if (!vq->use_dma_api)
> + if (!vq->use_dma_api) {
> + kmsan_handle_dma(virt_to_page(ptr), offset_in_page(ptr), size, dir);
> return (dma_addr_t)virt_to_phys(ptr);
> + }
>
> return dma_map_single_attrs(vring_dma_dev(vq), ptr, size, dir, attrs);
> }
> @@ -3171,8 +3173,10 @@ dma_addr_t virtqueue_dma_map_page_attrs(struct virtqueue *_vq, struct page *page
> {
> struct vring_virtqueue *vq = to_vvq(_vq);
>
> - if (!vq->use_dma_api)
> + if (!vq->use_dma_api) {
> + kmsan_handle_dma(page, offset, size, dir);
> return page_to_phys(page) + offset;
> + }
>
> return dma_map_page_attrs(vring_dma_dev(vq), page, offset, size, dir, attrs);
> }
