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Date: Thu, 22 Jun 2017 02:04:57 +0200
From: "Jason A. Donenfeld" <>
To: "Theodore Ts'o" <>, Michael Ellerman <>, 
	"Jason A. Donenfeld" <>, Jeffrey Walton <>,, 
	David Miller <>, Linus Torvalds <>, 
	Eric Biggers <>, LKML <>, 
	Greg Kroah-Hartman <>,, 
	Linux Crypto Mailing List <>
Subject: Re: [PATCH] random: warn when kernel uses unseeded randomness

Hi Ted,

On Wed, Jun 21, 2017 at 10:38 PM, Theodore Ts'o <> wrote:
> I agree completely with all of this.  The following patch replaces the
> current topmost patch on the random.git tree:
> For developers who want to work on improving this situation,
> CONFIG_WARN_UNSEEDED_RANDOM has been renamed to
> CONFIG_WARN_ALL_UNSEEDED_RANDOM.  By default the kernel will always
> print the first use of unseeded randomness.  This way, hopefully the
> security obsessed will be happy that there is _some_ indication when
> the kernel boots there may be a potential issue with that architecture
> or subarchitecture.  To see all uses of unseeded randomness,
> developers can enable CONFIG_WARN_ALL_UNSEEDED_RANDOM.

Seems fine to me.

Acked-by: Jason A. Donenfeld <>


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