linux-kernel - Re: 2.6.22-rc7: known regressions with patches v2

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Date:	Sat, 07 Jul 2007 12:23:11 -0400
From:	David Woodhouse <dwmw2@...radead.org>
To:	Michal Piotrowski <michal.k.k.piotrowski@...il.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Adrian Bunk <bunk@...sta.de>,
	Patrick Caulfield <pcaulfie@...hat.com>,
	David Teigland <teigland@...hat.com>, bluez-devel@...ts.sf.net,
	Marcel Holtmann <marcel@...tmann.org>,
	Jiri Kosina <jkosina@...e.cz>,
	Dmitry Torokhov <dtor@...ightbb.com>
Subject: Re: 2.6.22-rc7: known regressions with patches v2

On Sat, 2007-07-07 at 18:06 +0200, Michal Piotrowski wrote:
> FBDEV
> 
> Subject         : SLUB kmalloc-32768: Poison check failed@...1e20000
> slab 0xc04de400
> References      : http://lkml.org/lkml/2007/7/4/305
> Last known good : ?
> Submitter       : David Woodhouse <dwmw2@...radead.org>
> Caused-By       : ?
> Handled-By      : ?
> Status          : unknown

If you're looking for someone to blame, consider the fact that this has
gone away now I've switched back to slab. :)

> Bluetooth
> 
> Subject         : problem with a bluetooth mouse
> References      : http://lkml.org/lkml/2007/7/4/321
> Last known good : ?
> Submitter       : David Woodhouse <dwmw2@...radead.org>
> Caused-By       : ?
> Handled-By      : Jiri Kosina <jkosina@...e.cz>
>                   Dmitry Torokhov <dtor@...ightbb.com>
> Patch           : http://lkml.org/lkml/2007/7/6/391
> Status          : patch available

That patch was a straw man for Marcel to comment on, not necessarily a
real fix. I don't know the code that well, and naïvely reordering bits
of it could have introduced another race which I just haven't triggered
yet.

Strictly speaking, it wasn't a 2.6.22 regression either -- I actually
saw it for the first time in 2.6.21-rc iirc.

Thanks for tracking these, btw. It's very useful.

-- 
dwmw2

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