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Re: [PATCH 1/6] xen/gntdev: Fix dmabuf import with non-zero sgt offset
- To: Jürgen Groß <jgross@xxxxxxxx>, Oleksandr Andrushchenko <andr2000@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, "dri-devel@xxxxxxxxxxxxxxxxxxxxx" <dri-devel@xxxxxxxxxxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "boris.ostrovsky@xxxxxxxxxx" <boris.ostrovsky@xxxxxxxxxx>, "airlied@xxxxxxxx" <airlied@xxxxxxxx>, "daniel@xxxxxxxx" <daniel@xxxxxxxx>
- From: Oleksandr Andrushchenko <Oleksandr_Andrushchenko@xxxxxxxx>
- Date: Tue, 4 Aug 2020 06:34:10 +0000
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- Delivery-date: Tue, 04 Aug 2020 06:34:42 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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- Thread-topic: [PATCH 1/6] xen/gntdev: Fix dmabuf import with non-zero sgt offset
On 8/4/20 9:11 AM, Jürgen Groß wrote:
> On 31.07.20 14:51, Oleksandr Andrushchenko wrote:
>> From: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>
>>
>> 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?
I'll double-check, thank you
>
> And don't you want to Cc stable for this patch, too?
Hm, yes, sounds reasonable
>
>>
>> Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>
>
> Acked-by: Juergen Gross <jgross@xxxxxxxx>
>
>
> Juergen
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