linux-kernel - Re: Linux messages full of `random: get_random

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Message-ID: <20180429142218.GA13475@amd>
Date:   Sun, 29 Apr 2018 16:22:18 +0200
From:   Pavel Machek <pavel@....cz>
To:     Paul Menzel <pmenzel+linux-random-number@...gen.mpg.de>
Cc:     "Theodore Y. Ts'o" <tytso@....edu>, linux-kernel@...r.kernel.org
Subject: Re: Linux messages full of `random: get_random_u32 called from`

Hi!

> Am 25.04.2018 um 09:41 schrieb Theodore Y. Ts'o:
> >Does this help on your system?
> 
> Thank you, after figuring out how to apply the paste, yes it helped on my
> Lenovo X60.
> 
> >commit 4e00b339e264802851aff8e73cde7d24b57b18ce
> >Author: Theodore Ts'o <tytso@....edu>
> >Date:   Wed Apr 25 01:12:32 2018 -0400
> >
> >     random: rate limit unseeded randomness warnings
> >     On systems without sufficient boot randomness, no point spamming dmesg.
> 
> I guess this is a problem with old hardware?

Ok, I see it too, thinkpad x60.

But... this machine has spinning harddrive and independend RTC; there
really should be enough randomness...

Could we exploit either of them as randomness source when we run out
of entropy?

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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