Re: [PATCH v2 1/7] genirq/msi: Store the IOMMU IOVA directly in msi_desc instead of iommu_cookie

From: Joerg Roedel
Date: Fri Feb 21 2025 - 06:11:00 EST


Hi Nicolin,

On Fri, Feb 21, 2025 at 10:28:20AM +0100, Thomas Gleixner wrote:
> On Wed, Feb 19 2025 at 17:31, Nicolin Chen wrote:
> > Fix the MSI cookie UAF by removing the cookie pointer. The translated IOVA
> > address is already known during iommu_dma_prepare_msi() and cannot change.
> > Thus, it can simply be stored as an integer in the MSI descriptor.
> >
> > A following patch will fix the other UAF in iommu_get_domain_for_dev(), by
> > using the IOMMU group mutex.
>
> "A following patch" has no meaning once the current one is
> applied. Simply say:
>
> The other UAF in iommu_get_domain_for_dev() will be addressed
> seperately, by ....
>
> > Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
> > Signed-off-by: Nicolin Chen <nicolinc@xxxxxxxxxx>
>
> With that fixed:
>
> Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>

Can you please send a v3 with updated commit message and all the
review/acked tags added? I will pick it up then.

Thanks,

Joerg