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Spectre V2 again

Posted: 10. May 2021, 21:43
by Van_Vinkle
I did a look into /var/log/ because I suspected logs were increasing like a monster, but no: var/log only (!) has 2.6 Gb. It seems that I am not obliged to reduce it.

However, regarding syslog file I get

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 cat /var/log/syslog | grep V2 
There are dozens, perhaps hundreds, of lines like this one:

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 May 10 17:33:10 darkstar kernel: [   11.388919] Spectre V2 : System may be vulnerable to spectre v2 
which has perturbated me.

Anyway I ran this script which say me that there is no danger: https://github.com/speed47/spectre-meltdown-checker.

Who do I have to listen to?

Re: Spectre V2 again

Posted: 13. May 2021, 23:44
by gapan
What kernel are you using? I'm not getting any such messages here.

I think the output of that checker script should be trusted.

Re: Spectre V2 again

Posted: 21. May 2021, 16:41
by Van_Vinkle

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$ uname -a
Linux darkstar 4.4.157 #2 SMP Fri Sep 21 00:36:59 CDT 2018 x86_64 AMD Athlon(tm) II X2 250 Processor AuthenticAMD GNU/Linux
(and sorry for the delay)

Re: Spectre V2 again

Posted: 21. May 2021, 17:04
by gapan
The latest one in the repos right now is 4.4.261, so try upgrading to that. The messages will probably go away.

Re: Spectre V2 again

Posted: 24. May 2021, 15:54
by Van_Vinkle
I will not upgrade the kernel, because, as you said, it seems more trustworthy the script than the warning in /var/log/syslog. Besides that, my experience says me be carefull touching the core of the system. And (I hope so) an upgrade to Salix 15.0 is in the near horizon.

Anyway, thank you for your advice.