Re: [patch added to the 3.12 stable tree] x86_64, switch_to(): Load TLS descriptors before switching DS and ES

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On 01/08/2015, 02:49 AM, Andy Lutomirski wrote:
> On Wed, Jan 7, 2015 at 5:01 PM, Greg KH <greg@xxxxxxxxx> wrote:
>> On Tue, Jan 06, 2015 at 07:53:14PM +0100, Andi Kleen wrote:
>>> On Tue, Jan 06, 2015 at 05:34:44PM +0100, Jiri Slaby wrote:
>>>> From: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
>>>>
>>>> This patch has been added to the 3.12 stable tree. If you have any
>>>> objections, please let us know.
>>>
>>> IMHO this is not stable material. Significant risk you broke
>>> something obscure, and it's not clear it fixes any real problem.
>>
>> Then why is it in Linus's tree?
>>
>>> At least wait some more time first.
>>
>> How long should we wait?  3.19 to be released?  This does seem to fix a
>> real problem as the changelog points out.
> 
> It even has a CVE (CVE-2014-9419).

Hi, is the patch needed for kernels < 3.14 (before kASLR)? The commit
message is so poor, that I do not see what it fixes at all. Could you
elaborate?

I indeed can run estest with failures on 3.12. But what does it mean to
me would be nice to have explained...

thanks,
-- 
js
suse labs
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