linux-kernel - Re: [char-misc-next 3/3] mei: report consistently copy_from/to

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Message-ID: <20140311212943.3d9541f9@alan.etchedpixels.co.uk>
Date:	Tue, 11 Mar 2014 21:29:43 +0000
From:	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
To:	Tomas Winkler <tomas.winkler@...el.com>
Cc:	gregkh@...uxfoundation.org, arnd@...db.de,
	linux-kernel@...r.kernel.org,
	Alexander Usyskin <alexander.usyskin@...el.com>
Subject: Re: [char-misc-next 3/3] mei: report consistently copy_from/to_user
 failures

On Tue, 11 Mar 2014 14:49:25 +0200
Tomas Winkler <tomas.winkler@...el.com> wrote:

> From: Alexander Usyskin <alexander.usyskin@...el.com>
> 
> 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.

Alan
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