linux-kernel - Re: [PATCH 0/3] input: evdev: Dynamic buffers (rev4)

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Message-ID: <4C18F906.5060805@bitmath.org>
Date:	Wed, 16 Jun 2010 18:17:10 +0200
From:	Henrik Rydberg <rydberg@...math.org>
To:	Jiri Kosina <jkosina@...e.cz>
CC:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Henrik Rydberg <rydberg@...omail.se>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	Mika Kuoppala <mika.kuoppala@...ia.com>,
	Benjamin Tissoires <tissoire@...a.fr>,
	Rafi Rubin <rafi@...s.upenn.edu>
Subject: Re: [PATCH 0/3] input: evdev: Dynamic buffers (rev4)

Jiri Kosina wrote:
> On Thu, 10 Jun 2010, Dmitry Torokhov wrote:
> 
>>> This version implements buffer locking using event_lock as you
>>> suggested, such that we can proceed with fixing the evdev buffer
>>> problem independently from providing a suitable one-to-many buffer.
>>>
>>> The first patch converts the per-client buffers to a common buffer,
>>> and adds a fixme since the code is expected to be further
>>> improved. The second and third patch includes your review comments.
>> Henrik,
>>
>> Applied to .36 queue with minor adjustments, please take a peek in my
>> 'for-linus' branch and see if you spot anything wrong. 
> 
> Hi Dmitry,
> 
> I guess you forgot to push it to kernel.org? Last change I see in your 
> tree is 6 days old.
> 
> Thanks,
> 

... which seems like a lucky strike; the patch has a blatant security hole,
leaking grabbed events to listening clients after ungrab. I sent an updated
patch to Dmitry earlier today, in a brown paper bag. Not knowing if the original
patch was actually applied or not, I thought I had better hold on to the change
just a little bit.

Henrik
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