From: Andrew Morton <akpm@linux-foundation.org>
To: Stephan Mueller <smueller@chronox.de>
Cc: "Ted Ts'o" <tytso@mit.edu>, lkml <linux-kernel@vger.kernel.org>,
Jeff Liu <jeff.liu@oracle.com>, Kees Cook <keescook@chromium.org>
Subject: Re: [PATCH] avoid entropy starvation due to stack protection
Date: Wed, 12 Dec 2012 16:43:21 -0800 [thread overview]
Message-ID: <20121212164321.a01c5641.akpm@linux-foundation.org> (raw)
In-Reply-To: <50C72800.20508@chronox.de>
On Tue, 11 Dec 2012 13:33:04 +0100
Stephan Mueller <smueller@chronox.de> wrote:
> Some time ago, I noticed the fact that for every newly
> executed process, the function create_elf_tables requests 16 bytes of
> randomness from get_random_bytes. This is easily visible when calling
>
> while [ 1 ]
> do
> cat /proc/sys/kernel/random/entropy_avail
> sleep 1
> done
Please see
http://ozlabs.org/~akpm/mmotm/broken-out/binfmt_elfc-use-get_random_int-to-fix-entropy-depleting.patch
That patch is about one week from a mainline merge, btw.
next prev parent reply other threads:[~2012-12-13 0:43 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-11 12:33 [PATCH] avoid entropy starvation due to stack protection Stephan Mueller
2012-12-12 10:48 ` Stephan Mueller
2012-12-13 0:43 ` Andrew Morton [this message]
2012-12-13 7:44 ` Stephan Mueller
2012-12-14 17:36 ` Stephan Mueller
2012-12-16 0:30 ` Theodore Ts'o
2012-12-16 12:46 ` Stephan Müller
2012-12-21 20:07 ` Ondřej Bílka
2012-12-22 19:29 ` Theodore Ts'o
2012-12-15 19:15 ` Ondřej Bílka
2012-12-15 22:59 ` Stephan Müller
2012-12-21 19:32 ` Ondřej Bílka
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