netdev - Re: [PATCH v3 0/3] Send audit/procinfo/cgroup data in socket-level control message

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

Message-ID: <20130904152022.GD28517@madcap2.tricolour.ca>
Date:	Wed, 4 Sep 2013 11:20:22 -0400
From:	Richard Guy Briggs <rgb@...hat.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Jan Kaluza <jkaluza@...hat.com>, davem@...emloft.net,
	LKML <linux-kernel@...r.kernel.org>, netdev@...r.kernel.org,
	eparis@...hat.com, tj@...nel.org, lizefan@...wei.com,
	containers@...ts.linux-foundation.org, cgroups@...r.kernel.org,
	viro@...iv.linux.org.uk
Subject: Re: [PATCH v3 0/3] Send audit/procinfo/cgroup data in socket-level
 control message

On Wed, Sep 04, 2013 at 10:58:30AM -0400, Richard Guy Briggs wrote:
> On Wed, Sep 04, 2013 at 12:42:26AM -0700, Eric W. Biederman wrote:
> > Jan Kaluza <jkaluza@...hat.com> writes:
> > > this patchset against net-next (applies also to linux-next) adds 3 new types
> > > of "Socket"-level control message (SCM_AUDIT, SCM_PROCINFO and SCM_CGROUP).
> 
> > By my count you have overflowed cb in struct sk_buff and are stomping on
> > _skb_refdest.
> 
> For patch1/3 I count 56/48, then for patch3 I get 48/48.  Jan, you might
> do the conversion to a pointer in patch1/3 to avoid bisect breakage.

Wait, that __aligned(8) is for cb[48], not for the contents.

For patch1/3 I count 28/48 on 32-bit, 36/48 on 64-bit (or would that be
56 by default on 64-bit arches without aligned specified?), then for
patch3 I get 24/48 on 32 and 40/48 on 64 (or again 48/48 by default?).

> > Eric
> 
> - RGB

- RGB

--
Richard Guy Briggs <rbriggs@...hat.com>
Senior Software Engineer
Kernel Security
AMER ENG Base Operating Systems
Remote, Ottawa, Canada
Voice: +1.647.777.2635
Internal: (81) 32635
Alt: +1.613.693.0684x3545
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html