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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <201005121138.05254.tvrtko.ursulin@sophos.com>
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

Sophos Plc, The Pentagon, Abingdon Science Park, Abingdon, OX14 3YP, United Kingdom.
Company Reg No 2096520. VAT Reg No GB 348 3873 20.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/