linux-kernel - Re: 2.6.33.2 kmalloc-8 slab leaks ~512 objects per second

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Message-ID: <201005131339.32113.tvrtko.ursulin@sophos.com>
Date:	Thu, 13 May 2010 13:39:31 +0100
From:	Tvrtko Ursulin <tvrtko.ursulin@...hos.com>
To:	Catalin Marinas <catalin.marinas@....com>
CC:	Pekka Enberg <penberg@...helsinki.fi>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Airlie <airlied@...ux.ie>,
	"dri-devel@...ts.sourceforge.net" <dri-devel@...ts.sourceforge.net>,
	Jerome Glisse <glisse@...edesktop.org>
Subject: Re: 2.6.33.2 kmalloc-8 slab leaks ~512 objects per second

On Thursday 13 May 2010 13:29:49 Catalin Marinas wrote:
> Tvrtko Ursulin <tvrtko.ursulin@...hos.com> wrote:
> > On Wednesday 12 May 2010 14:00:51 Pekka Enberg wrote:
> >> [snip]
> >>
> >> You might want to try out the built-in kernel memory leak detector.
> >> See Documentation/kmemleak.txt for details how to enable it and use
> >> it.
> >
> > Thanks for the suggestion, I will have to try it out once but not this
> > time :) because 2.6.34-rc7 seems to be fine, or in other words not
> > leaking.
>
> You could just enable CONFIG_DEBUG_KMEMLEAK on 2.6.33, mount the debugfs
> and do a 'cat /sys/kernel/debug/kmemleak' after a half-hour or so.

I could do it if radeon/drm guys would be interested in those results? (Given
how 2.6.34-rc7 is not leaking.)

Tvrtko

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