Subject: Re: [PATCH vfio 08/13] vfio: Introduce the DMA logging feature support

From: Jason Gunthorpe <[email-masked]>
Date: Thu, 30 Jun 2022 10:48:24 -0300

On Thu, Jun 30, 2022 at 09:40:01PM +0800, kernel test robot wrote:

>   1636		nnodes = control.num_ranges;
>   1637		if (!nnodes || nnodes > LOG_MAX_RANGES)
>   1638			return -EINVAL;
>   1639	
> > 1640		ranges = (struct vfio_device_feature_dma_logging_range __user *)
>   1641									control.ranges;

Things like this should always use u64_to_user_ptr()

Jason