RE: [char-misc-next 3/3] mei: report consistently copy_from/to_user failures

[Winkler, Tomas]

> On Tue, 11 Mar 2014 14:49:25 +0200
> Tomas Winkler <tomas.winkler@xxxxxxxxx> wrote:
> 
> > From: Alexander Usyskin <alexander.usyskin@xxxxxxxxx>
> >
> > Consistently display error on possible copy_from/to_user failures
> > and replace dev_dbg with dev_err
> 
> NAK
> 
> This allows users to flood the logs by deliberately causing lots of these
> failed to copy data error messages, and if they can flood the logs they
> can hide other stuff.
> 
> The -EFAULT cases should be consistent - but consistently *not* logged.

Yep, that's really looks like a possible exploit, please drop this patch.
Tomas
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