On Wed, 27 Sep 2006 11:31:32 +0200
Martin Schwidefsky <[EMAIL PROTECTED]> wrote:

> On Tue, 2006-09-26 at 17:11 -0700, Andrew Morton wrote:
> > I guess other architectures will need to do this.  See
> > 01408c4939479ec46c15aa7ef6e2406be50eeeca and
> > 7c12d81134b130ccd4c286b434ca48c4cda71a2f for the rationale.
> 
> Urgh, s390 does not have the problem that is does pad the leftover bytes
> in __copy_from_user_inatomic but that is does NOT pad the leftover bytes
> in __copy_from_user ..
> 

That permits users to read uninitialised kernel memory by appending to a file
from a bad address then reading the result back....
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