linux-kernel - Re: [PATCH 1/6] xen/gntdev: Fix dmabuf import with non-zero sgt offset

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Date:   Tue, 4 Aug 2020 08:11:47 +0200
From:   Jürgen Groß <jgross@...e.com>
To:     Oleksandr Andrushchenko <andr2000@...il.com>,
        xen-devel@...ts.xenproject.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, boris.ostrovsky@...cle.com,
        airlied@...ux.ie, daniel@...ll.ch
Cc:     sstabellini@...nel.org, dan.carpenter@...cle.com,
        intel-gfx@...ts.freedesktop.org,
        Oleksandr Andrushchenko <oleksandr_andrushchenko@...m.com>
Subject: Re: [PATCH 1/6] xen/gntdev: Fix dmabuf import with non-zero sgt
 offset

On 31.07.20 14:51, Oleksandr Andrushchenko wrote:
> From: Oleksandr Andrushchenko <oleksandr_andrushchenko@...m.com>
> 
> It is possible that the scatter-gather table during dmabuf import has
> non-zero offset of the data, but user-space doesn't expect that.
> Fix this by failing the import, so user-space doesn't access wrong data.
> 
> Fixes: 37ccb44d0b00 ("xen/gntdev: Implement dma-buf import functionality")

I can't find this commit in the tree. Did you mean bf8dc55b1358?

And don't you want to Cc stable for this patch, too?

> 
> Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@...m.com>

Acked-by: Juergen Gross <jgross@...e.com>


Juergen