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Date:   Tue, 1 May 2018 20:02:50 -0400
From:   "Theodore Y. Ts'o" <tytso@mit.edu>
To:     Justin Forbes <jmforbes@linuxtx.org>
Cc:     Jeremy Cline <jeremy@jcline.org>,
        Sultan Alsawaf <sultanxda@gmail.com>,
        Pavel Machek <pavel@ucw.cz>,
        LKML <linux-kernel@vger.kernel.org>, Jann Horn <jannh@google.com>
Subject: Re: Linux messages full of `random: get_random_u32 called from`
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        Sultan Alsawaf <sultanxda@gmail.com>, Pavel Machek <pavel@ucw.cz>,
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On Tue, May 01, 2018 at 05:35:56PM -0500, Justin Forbes wrote:
> 
> I have not reproduced in GCE myself.  We did get some confirmation
> that removing dracut-fips does make the problem less dire (but I
> wouldn't call a 4 minute boot a win, but booting in 4 minutes is
> better than not booting at all).  Specifically systemd calls libgcrypt
> before it even opens the log with fips there, and this is before
> virtio-rng modules could even load. Right now though, we are looking
> at pretty much any possible options as the majority of people are
> calling for me to backout the patches completely from rawhide.

FWIW, Debian Testing is using systemd 238, and from what I can tell
it's calling libgcrypt and it has the same (as near as I can tell)
totally pointless hmac nonsense, and it's not a problem that I can
see.  Of course, Debian and Fedora may have a different set of
patches....

	       	   	      	     - Ted