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

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Date:	Wed, 12 May 2010 11:38:05 +0100
From:	Tvrtko Ursulin <tvrtko.ursulin@...hos.com>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:	<dri-devel@...ts.sourceforge.net>, David Airlie <airlied@...ux.ie>
Subject: Re: 2.6.33.2 kmalloc-8 slab leaks ~512 objects per second

On Wednesday 12 May 2010 11:21:48 Tvrtko Ursulin wrote:
> Hi all,
>
> As the subject says, is this a know issue? I have been tracking the growth
>  at one second intervals and it looks like this:
>
> 512 (67716608) Slab:             606744 kB
> 512 (67717120) Slab:             606752 kB
> 512 (67717632) Slab:             606756 kB
> 0 (67718144) Slab:             606756 kB
> 512 (67718144) Slab:             606760 kB
> 1024 (67718656) Slab:             606768 kB
> 512 (67719680) Slab:             606772 kB
> 512 (67720192) Slab:             606776 kB
> 0 (67720704) Slab:             606776 kB
> 512 (67720704) Slab:             606780 kB
>
> First fiels is the diff in numobj, in parentheses is actual numobj and last
>  is the total slab size from /proc/meminfo.
>
> kmalloc-8         68044800 68044800      8  512    1 : tunables    0    0
>   0
>
> : slabdata 132900 132900      0
>
> dm-io slab also seems large, don't know... :
> dm_io              75924 147288     40  102    1 : tunables    0    0    0
>  : slabdata   1444   1444      0
>
> Some other info about the system/kernel is attached.

I think it is DRM (radeon) related, leak stopped when I closed all X programs.
I am compiling 2.6.33.3 right now and will soon reboot into it.

Tvrtko

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