Re: warning about spectre with last kernel update

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Le 17/02/2018 à 12:59, Ed Greshko a écrit :
> On 02/17/18 18:12, François Patte wrote:
>> I just updated f27 and the new installed kernel
>> (4.15.3-300.fc27.x86_64), sends these messages at boot time:
>>
>> kernel: Spectre V2 : Mitigation: Full generic retpoline
>> kernel: Spectre V2 : System may be vulnerable to spectre v2
>>
>> What do they mean and what to do? Waiting for next kernel update?
> 
> 
> It may mean that your particular CPU is not fully protected by the recent kernel patches.
> 
> Cat the files in /sys/devices/system/cpu/vulnerabilities
> 
> FWIW, my systems have ....
> 
> [egreshko@acer vulnerabilities]$ cat meltdown
> Mitigation: PTI
> 
> [egreshko@acer vulnerabilities]$ cat spectre_v1
> Mitigation: __user pointer sanitization

Same as you.

> 
> [egreshko@acer vulnerabilities]$ cat spectre_v2
> Mitigation: Full generic retpoline

this one gives:

Mitigation: Full generic retpoline - vulnerable module loaded

But does not give the module name!!


-- 
François Patte
UFR de mathématiques et informatique
Laboratoire CNRS MAP5, UMR 8145
Université Paris Descartes
45, rue des Saints Pères
F-75270 Paris Cedex 06
Tél. +33 (0)6 7892 5822
http://www.math-info.univ-paris5.fr/~patte

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