linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Dave Hansen <dave@linux.vnet.ibm.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Lameter <cl@linux.com>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [RFC][PATCH] fix move/migrate_pages() race on task struct
Date: Wed, 29 Feb 2012 12:36:22 -0800	[thread overview]
Message-ID: <4F4E8C46.3040005@linux.vnet.ibm.com> (raw)
In-Reply-To: <20120229123120.127e21fd.akpm@linux-foundation.org>

On 02/29/2012 12:31 PM, Andrew Morton wrote:
> What was the user-visible impact of the bug?

It'll probably oops dereferencing task->cred:

https://lkml.org/lkml/2012/2/23/302

Although I was never actually able to get it to trigger without some
code to enlarge the race window.


  parent reply	other threads:[~2012-02-29 20:38 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-02-23 18:07 [RFC][PATCH] fix move/migrate_pages() race on task struct Dave Hansen
2012-02-23 18:45 ` Andi Kleen
2012-02-23 18:45 ` Christoph Lameter
2012-02-23 19:10   ` Dave Hansen
2012-02-23 19:40     ` Christoph Lameter
2012-02-23 20:04       ` Dave Hansen
2012-02-23 21:41         ` Christoph Lameter
2012-02-24  3:14           ` Eric W. Biederman
2012-02-24 15:20             ` Christoph Lameter
2012-02-24 15:41               ` Eric W. Biederman
2012-02-24 16:48               ` Dave Hansen
2012-02-24 16:54                 ` Christoph Lameter
2012-02-24 17:04                   ` Dave Hansen
2012-02-24 17:08                   ` Christoph Lameter
2012-02-24 17:25                     ` Dave Hansen
2012-02-24 17:32                       ` Christoph Lameter
2012-02-24 21:37                         ` Dave Hansen
2012-02-24 23:12                         ` Eric W. Biederman
2012-02-27 16:43                           ` Christoph Lameter
2012-02-25 12:13                         ` Eric W. Biederman
2012-02-27 19:01                           ` Christoph Lameter
2012-02-27 20:15                             ` Eric W. Biederman
2012-02-27 22:39                               ` Christoph Lameter
2012-02-28 19:30                                 ` Christoph Lameter
2012-02-29 20:31                                   ` Andrew Morton
2012-02-29 20:33                                     ` Christoph Lameter
2012-02-29 20:36                                     ` Dave Hansen [this message]
2012-02-24 17:07               ` 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=4F4E8C46.3040005@linux.vnet.ibm.com \
    --to=dave@linux.vnet.ibm.com \
    --cc=akpm@linux-foundation.org \
    --cc=cl@linux.com \
    --cc=ebiederm@xmission.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    /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).