Re: cryptoapi highmem bug

[Jean-Luc Cooke]

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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