From: Jean-Luc Cooke <jlcooke@certainkey.com>
To: Christophe Saout <christophe@saout.de>
Cc: James Morris <jmorris@intercode.com.au>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: cryptoapi highmem bug
Date: Tue, 24 Feb 2004 23:32:09 -0500 [thread overview]
Message-ID: <20040225043209.GA1179@certainkey.com> (raw)
In-Reply-To: <1077663682.6493.1.camel@leto.cs.pocnet.net>
On Wed, Feb 25, 2004 at 12:01:24AM +0100, Christophe Saout wrote:
> Am Di, den 24.02.2004 schrieb Jean-Luc Cooke um 23:34:
>
> > What is calling cbc_process directly? I don't see how any other function
> > could possibly call this function directly.
>
> Nobody is calling it directly.
>
> > cipher.c's cipher() function called cbc_process() with two different src and
> > dst buffers, *always*.
>
> It you pass the same to ->encrypt_iv (like kblockd for reads) it will
> kmap the same page twice and call cbc_process with two different virtual
> addresses pointing to the same page.
Ah right. Wanring: this is a cryptographer hacking kernel - danger!
How do I check for equal real addresses from two virtual ones?
JLC
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next prev parent reply other threads:[~2004-02-25 4:42 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-24 20:49 cryptoapi highmem bug Christophe Saout
2004-02-24 22:34 ` Jean-Luc Cooke
2004-02-24 23:01 ` Christophe Saout
2004-02-25 4:32 ` Jean-Luc Cooke [this message]
2004-02-25 6:00 ` Andrew Morton
2004-02-25 13:27 ` James Morris
2004-02-25 15:17 ` Jean-Luc Cooke
2004-02-25 19:50 ` Andrew Morton
2004-02-25 21:27 ` Christophe Saout
2004-02-25 21:41 ` Jean-Luc Cooke
2004-02-25 22:55 ` [PATCH 1/2] move scatterwalk functions to own file Christophe Saout
2004-02-25 22:55 ` [PATCH 2/2] fix in-place de/encryption bug with highmem Christophe Saout
2004-02-26 4:13 ` James Morris
2004-02-26 11:03 ` Christophe Saout
2004-02-25 15:31 ` cryptoapi highmem bug Christophe Saout
2004-02-25 15:51 ` Christophe Saout
2004-02-25 15:44 ` Jean-Luc Cooke
2004-02-25 16:13 ` Christophe Saout
2004-02-25 16:09 ` Jean-Luc Cooke
2004-02-25 18:11 ` cryptoapi OMAC (was: cryptoapi highmem bug) Christophe Saout
2004-02-25 20:59 ` Jean-Luc Cooke
2004-02-25 21:44 ` Christophe Saout
2004-02-25 18:15 ` cryptoapi highmem bug Christophe Saout
2004-02-25 20:12 ` Jean-Luc Cooke
2004-02-25 20:39 ` Christophe Saout
2004-02-25 20:46 ` Jean-Luc Cooke
2004-02-25 21:36 ` Christophe Saout
2004-02-25 21:52 ` Jean-Luc Cooke
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