All of lore.kernel.org
 help / color / mirror / Atom feed
From: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: akpm@linux-foundation.org,
	KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
	Amerigo Wang <amwang@redhat.com>,
	"Serge E. Hallyn" <serue@us.ibm.com>, Jiri Slaby <jslaby@suse.cz>,
	"Doug Ledford (commit_signer:5/9=56%)" <dledford@redhat.com>,
	"\"Eric W. Biederman\" (commit_signer:2/9=22%)" 
	<ebiederm@xmission.com>,
	"Joe Korty (commit_signer:2/9=22%)" <joe.korty@ccur.com>,
	"David Howells (commit_signer:2/9=22%)" <dhowells@redhat.com>
Subject: Re: [resend][PATCH 1/3] mqueue: revert bump up DFLT_*MAX
Date: Sun, 18 Dec 2011 13:29:41 -0500	[thread overview]
Message-ID: <4EEE3115.80801@gmail.com> (raw)
In-Reply-To: <1323470163-8723-1-git-send-email-kosaki.motohiro@gmail.com>

(12/9/11 5:35 PM), kosaki.motohiro@gmail.com wrote:
> From: KOSAKI Motohiro<kosaki.motohiro@jp.fujitsu.com>
> 
> Mqueue limitation is slightly naieve parameter likes other ipcs
> because unprivileged user can consume kernel memory by using ipcs.
> 
> Thus, too aggressive raise bring us security issue. Example,
> current setting allow evil unprivileged user use 256GB (= 256
> * 1024 * 1024*1024) and it's enough large to system will belome
> unresponsive. Don't do that.
> 
> Instead, every admin should adjust the knobs for their own systems.
> 
> Signed-off-by: KOSAKI Motohiro<kosaki.motohiro@jp.fujitsu.com>
> Acked-by: Doug Ledford<dledford@redhat.com>
> Acked-by: Joe Korty<joe.korty@ccur.com>
> Cc: Amerigo Wang<amwang@redhat.com>
> Cc: Serge E. Hallyn<serue@us.ibm.com>
> Cc: Jiri Slaby<jslaby@suse.cz>

Andrew, can you please pick up this series into your tree? because your
tree have related Doug mqueue.

Thanks.



  parent reply	other threads:[~2011-12-18 18:29 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-09 22:35 [resend][PATCH 1/3] mqueue: revert bump up DFLT_*MAX kosaki.motohiro
2011-12-09 22:35 ` [resend][PATCH 2/3] mqueue: don't use kmalloc with KMALLOC_MAX_SIZE kosaki.motohiro
2011-12-09 22:35 ` [resend][PATCH 3/3] mqueue: separate mqueue default value from maximum value kosaki.motohiro
2011-12-18 18:29 ` KOSAKI Motohiro [this message]
2011-12-18 18:29 ` [resend][PATCH 1/3] mqueue: revert bump up DFLT_*MAX KOSAKI Motohiro
2011-12-18 18:38   ` Andrew Morton
2012-03-14 21:28     ` Doug Ledford
2012-03-14 21:38       ` Andrew Morton
2012-03-14 21:45         ` Doug Ledford
2012-03-19 18:02           ` KOSAKI Motohiro
2012-03-19 18:16             ` Doug Ledford
2012-03-19 20:49               ` KOSAKI Motohiro

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=4EEE3115.80801@gmail.com \
    --to=kosaki.motohiro@gmail.com \
    --cc=akpm@linux-foundation.org \
    --cc=amwang@redhat.com \
    --cc=dhowells@redhat.com \
    --cc=dledford@redhat.com \
    --cc=ebiederm@xmission.com \
    --cc=joe.korty@ccur.com \
    --cc=jslaby@suse.cz \
    --cc=kosaki.motohiro@jp.fujitsu.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=serue@us.ibm.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.