linux-kernel - Re: slub: Lockout validation scans during freeing of object

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-prev] [day] [month] [year] [list]

Date:	Wed, 14 Dec 2011 19:14:03 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Pekka Enberg <penberg@...nel.org>
cc:	Christoph Lameter <cl@...ux.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: slub: Lockout validation scans during freeing of object

On Mon, 12 Dec 2011, Pekka Enberg wrote:

> > Subject: slub: Lockout validation scans during freeing of object
> > 
> > Slab validation can run right now while the slab free paths prepare
> > the redzone fields etc around the objects in preparation of the
> > actual freeing of the object. This can lead to false positives.
> > 
> > Take the node lock unconditionally during free so that the validation
> > can examine objects without them being disturbed by freeing operations.
> > 
> > Signed-off-by: Christoph Lameter <cl@...ux.com>

Acked-by: David Rientjes <rientjes@...gle.com>
--
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/