From: Cyrill Gorcunov <gorcunov@gmail.com>
To: bastien ROUCARIES <roucaries.bastien@gmail.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
Herbert Xu <herbert@gondor.hengli.com.au>,
Tejun Heo <tj@kernel.org>,
linux-kernel@vger.kernel.org,
Pavel Emelyanov <xemul@parallels.com>,
Glauber Costa <glommer@parallels.com>,
Andi Kleen <andi@firstfloor.org>,
Matt Helsley <matthltc@us.ibm.com>,
Pekka Enberg <penberg@kernel.org>,
Eric Dumazet <eric.dumazet@gmail.com>,
Vasiliy Kulikov <segoon@openwall.com>,
Andrew Morton <akpm@linux-foundation.org>,
Alexey Dobriyan <adobriyan@gmail.com>,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [patch 1/4] Add routine for generating an ID for kernel pointer
Date: Tue, 3 Jan 2012 01:14:39 +0400 [thread overview]
Message-ID: <20120102211439.GC2621@moon> (raw)
In-Reply-To: <201201021318.15130.roucaries.bastien@gmail.com>
On Mon, Jan 02, 2012 at 01:18:13PM +0100, bastien ROUCARIES wrote:
> Le Saturday 31 December 2011 08:51:02, Cyrill Gorcunov a écrit :
> > On Fri, Dec 30, 2011 at 06:51:37PM -0500, KOSAKI Motohiro wrote:
> > ...
> >
> > > >Guys, this become more and more complex, finally I fear someone
> > > >propose to do ideal hashing run-time ;) Maybe we can step back and
> > > >live with root-only and plain pointers here? I'm not sure who else
> > > >might need such facility except us, and if once there will be a
> > > >candidate -- we could take a look on hashing again and provide safe
> > > >hashes there. No?
> > >
> > > But recently kernel security fashion are, we don't expose a kernel
> > > pointer at all even though the file is root only. I'm not sure how
> > > much effective such fashion. but you seems run opposite way.
> > >
> > > I doubt user land can implement good comparison way. Why you gave up
> > > Andrew's sys_are_these_files_the_same() idea?
>
> By memory, it seems that fuse expose kernel pointer encrypting it with tea.
> Tea is simple and quick you should get a glimpse at it.
>
I've been advised to try aes as well with random cookie as a key.
I'll take a look once I've time to. Thanks!
Cyrill
next prev parent reply other threads:[~2012-01-02 21:14 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-23 12:47 [patch 0/4] generic object ids, v2 Cyrill Gorcunov
2011-12-23 12:47 ` [patch 1/4] Add routine for generating an ID for kernel pointer Cyrill Gorcunov
2011-12-27 23:23 ` Andrew Morton
2011-12-28 7:42 ` Cyrill Gorcunov
2011-12-28 9:42 ` Andrew Morton
2011-12-28 9:43 ` Cyrill Gorcunov
2011-12-28 9:47 ` Pavel Emelyanov
2011-12-28 10:41 ` Cyrill Gorcunov
2011-12-27 23:33 ` Andrew Morton
2011-12-28 0:48 ` Randy Dunlap
2011-12-28 7:24 ` Cyrill Gorcunov
2011-12-27 23:54 ` Valdis.Kletnieks
2011-12-28 0:02 ` Andrew Morton
2011-12-28 7:22 ` Cyrill Gorcunov
2011-12-28 16:06 ` Tejun Heo
2011-12-28 16:18 ` Cyrill Gorcunov
2011-12-28 16:26 ` Tejun Heo
2011-12-28 16:40 ` Cyrill Gorcunov
2011-12-28 16:45 ` Tejun Heo
2011-12-28 16:53 ` Cyrill Gorcunov
2011-12-28 17:01 ` Tejun Heo
2011-12-28 17:14 ` Cyrill Gorcunov
2011-12-29 14:24 ` Cyrill Gorcunov
2011-12-29 16:14 ` Tejun Heo
2011-12-29 16:24 ` Cyrill Gorcunov
2011-12-30 0:23 ` Herbert Xu
2011-12-30 7:36 ` Cyrill Gorcunov
2011-12-30 20:31 ` KOSAKI Motohiro
2011-12-30 20:48 ` Cyrill Gorcunov
2011-12-30 23:51 ` KOSAKI Motohiro
2011-12-31 7:51 ` Cyrill Gorcunov
2012-01-02 12:18 ` bastien ROUCARIES
2012-01-02 21:14 ` Cyrill Gorcunov [this message]
2011-12-31 4:55 ` Kyle Moffett
2011-12-31 7:57 ` Cyrill Gorcunov
2011-12-23 12:47 ` [patch 2/4] proc: Show namespaces IDs in /proc/pid/ns/* files Cyrill Gorcunov
2012-01-04 6:02 ` Eric W. Biederman
2012-01-04 11:26 ` Cyrill Gorcunov
2012-01-04 17:56 ` Eric W. Biederman
2012-01-04 18:19 ` Cyrill Gorcunov
2011-12-23 12:47 ` [patch 3/4] proc: Show open file ID in /proc/pid/fdinfo/* Cyrill Gorcunov
2011-12-23 12:47 ` [patch 4/4] proc: Show IDs of objects cloned with CLONE_ in proc Cyrill Gorcunov
-- strict thread matches above, loose matches on Subject: below --
2011-12-22 12:56 [patch 0/4] kernel generic object IDs series Cyrill Gorcunov
2011-12-22 12:56 ` [patch 1/4] Add routine for generating an ID for kernel pointer Cyrill Gorcunov
2011-12-28 16:51 ` Alan Cox
2011-12-28 17:05 ` Cyrill Gorcunov
2011-12-28 17:21 ` Alan Cox
2011-12-28 17:35 ` Cyrill Gorcunov
2011-12-28 19:48 ` Cyrill Gorcunov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120102211439.GC2621@moon \
--to=gorcunov@gmail.com \
--cc=adobriyan@gmail.com \
--cc=akpm@linux-foundation.org \
--cc=andi@firstfloor.org \
--cc=davem@davemloft.net \
--cc=eric.dumazet@gmail.com \
--cc=glommer@parallels.com \
--cc=herbert@gondor.hengli.com.au \
--cc=kosaki.motohiro@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=matthltc@us.ibm.com \
--cc=penberg@kernel.org \
--cc=roucaries.bastien@gmail.com \
--cc=segoon@openwall.com \
--cc=tj@kernel.org \
--cc=xemul@parallels.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).