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Subject: Re: cryptoapi highmem bug
From: Christophe Saout <christophe@saout.de>
To: Jean-Luc Cooke <jlcooke@certainkey.com>
Cc: James Morris <jmorris@intercode.com.au>,
       LKML <linux-kernel@vger.kernel.org>
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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.