From: Paul Jackson <pj@sgi.com>
To: vatsa@in.ibm.com
Cc: sekharan@us.ibm.com, ckrm-tech@lists.sourceforge.net,
linux-kernel@vger.kernel.org, xemul@sw.ru, dev@sw.ru,
rohitseth@google.com, ebiederm@xmission.com, mbligh@google.com,
winget@google.com, containers@lists.osdl.org, serue@us.ibm.com,
menage@google.com, devel@openvz.org
Subject: Re: [ckrm-tech] [PATCH 1/7] containers (V7): Generic container system abstracted from cpusets code
Date: Sat, 24 Mar 2007 18:41:28 -0700 [thread overview]
Message-ID: <20070324184128.e8b34a3e.pj@sgi.com> (raw)
In-Reply-To: <20070325004529.GD11794@in.ibm.com>
vatsa wrote:
> > if (tsk->flags & PF_EXITING) {
>
> What if PF_EXITING is set after this check? If that happens then,
>
> > task_unlock(tsk);
> > mutex_unlock(&callback_mutex);
> > put_task_struct(tsk);
> > return -ESRCH;
> > }
>
> the following code becomes racy with cpuset_exit() ...
>
> atomic_inc(&cs->count);
> rcu_assign_pointer(tsk->cpuset, cs);
> task_unlock(tsk);
eh ... so ... ?
I don't know of any sequence where that causes any problem.
Do you see one?
--
I won't rest till it's the best ...
Programmer, Linux Scalability
Paul Jackson <pj@sgi.com> 1.925.600.0401
next prev parent reply other threads:[~2007-03-25 1:41 UTC|newest]
Thread overview: 132+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-12 8:15 [PATCH 0/7] containers (V7): Generic Process Containers menage
2007-02-12 8:15 ` [PATCH 1/7] containers (V7): Generic container system abstracted from cpusets code menage
2007-02-12 12:33 ` Srivatsa Vaddagiri
2007-02-12 19:26 ` Paul Menage
2007-02-12 19:46 ` Paul Menage
2007-02-13 5:48 ` Srivatsa Vaddagiri
2007-02-13 8:16 ` [ckrm-tech] " Srivatsa Vaddagiri
2007-03-07 12:21 ` Srivatsa Vaddagiri
2007-03-07 14:06 ` [ckrm-tech] " Srivatsa Vaddagiri
2007-03-07 20:50 ` Paul Menage
2007-03-08 10:38 ` [ckrm-tech] " Srivatsa Vaddagiri
2007-03-08 10:40 ` Paul Menage
2007-03-11 19:38 ` Paul Jackson
2007-03-12 14:19 ` Srivatsa Vaddagiri
2007-03-22 9:56 ` Srivatsa Vaddagiri
2007-03-22 10:20 ` Srivatsa Vaddagiri
2007-03-24 15:05 ` Srivatsa Vaddagiri
2007-03-24 19:25 ` Paul Jackson
2007-03-25 0:45 ` Srivatsa Vaddagiri
2007-03-25 1:41 ` Paul Jackson [this message]
2007-03-25 2:28 ` Srivatsa Vaddagiri
2007-03-25 4:16 ` Srivatsa Vaddagiri
2007-03-25 5:43 ` Paul Jackson
2007-03-25 8:21 ` Srivatsa Vaddagiri
2007-03-25 4:45 ` Paul Jackson
2007-03-25 5:05 ` Srivatsa Vaddagiri
2007-03-25 4:59 ` Paul Jackson
2007-02-12 8:15 ` [PATCH 2/7] containers (V7): Cpusets hooked into containers menage
2007-02-15 20:35 ` Serge E. Hallyn
2007-02-15 20:49 ` Paul Menage
2007-03-07 14:34 ` Srivatsa Vaddagiri
2007-03-07 16:01 ` Paul Menage
2007-03-07 16:31 ` [ckrm-tech] " Srivatsa Vaddagiri
2007-03-07 16:31 ` Paul Menage
2007-03-07 14:52 ` Srivatsa Vaddagiri
2007-03-07 16:12 ` Paul Menage
2007-02-12 8:15 ` [PATCH 4/7] containers (V7): Simple CPU accounting container subsystem menage
2007-02-12 8:15 ` [PATCH 5/7] containers (V7): Resource Groups over generic containers menage
2007-02-12 8:15 ` [PATCH 6/7] containers (V7): BeanCounters over generic process containers menage
2007-02-12 15:34 ` Srivatsa Vaddagiri
2007-02-12 18:49 ` Paul Menage
2007-02-13 8:52 ` Pavel Emelianov
2007-02-13 9:03 ` Paul Menage
2007-02-13 9:18 ` Pavel Emelianov
2007-02-13 9:37 ` Paul Menage
2007-02-13 9:49 ` Pavel Emelianov
2007-02-12 8:15 ` [PATCH 7/7] containers (V7): Container interface to nsproxy subsystem menage
2007-03-24 5:05 ` [ckrm-tech] " Srivatsa Vaddagiri
2007-03-24 16:23 ` Srivatsa Vaddagiri
2007-03-26 21:57 ` Serge E. Hallyn
2007-03-28 14:55 ` Srivatsa Vaddagiri
2007-03-28 15:26 ` Serge E. Hallyn
2007-03-26 21:55 ` Serge E. Hallyn
2007-03-31 2:47 ` Srivatsa Vaddagiri
2007-04-02 14:09 ` Serge E. Hallyn
2007-04-02 14:27 ` Srivatsa Vaddagiri
2007-04-02 18:02 ` Eric W. Biederman
2007-04-03 14:16 ` Srivatsa Vaddagiri
2007-04-03 15:32 ` Serge E. Hallyn
2007-04-03 15:45 ` Paul Menage
2007-04-03 15:54 ` Serge E. Hallyn
2007-04-03 16:16 ` Srivatsa Vaddagiri
2007-04-03 16:26 ` Kirill Korotaev
2007-04-03 16:46 ` Srivatsa Vaddagiri
2007-04-03 16:52 ` Paul Menage
2007-04-03 17:11 ` Srivatsa Vaddagiri
2007-04-03 17:10 ` Paul Menage
2007-04-03 17:30 ` Srivatsa Vaddagiri
2007-04-03 17:30 ` Paul Menage
2007-04-03 17:51 ` Srivatsa Vaddagiri
2007-04-03 17:49 ` Paul Menage
2007-04-04 3:07 ` Srivatsa Vaddagiri
2007-04-04 3:44 ` Paul Jackson
2007-04-04 4:04 ` Paul Menage
2007-04-04 5:15 ` Srivatsa Vaddagiri
2007-04-04 7:00 ` Paul Menage
2007-04-04 17:26 ` Srivatsa Vaddagiri
2007-04-04 17:42 ` Srivatsa Vaddagiri
2007-04-04 18:57 ` Paul Menage
2007-04-04 23:02 ` Eric W. Biederman
2007-04-05 1:35 ` Paul Menage
2007-04-05 1:37 ` Paul Menage
2007-04-05 16:57 ` Srivatsa Vaddagiri
2007-04-05 17:14 ` Srivatsa Vaddagiri
2007-04-06 21:54 ` Paul Menage
2007-04-05 2:57 ` Paul Menage
2007-04-05 6:39 ` Srivatsa Vaddagiri
2007-04-05 6:46 ` Srivatsa Vaddagiri
2007-04-05 6:48 ` Paul Menage
2007-04-05 8:49 ` Srivatsa Vaddagiri
2007-04-05 9:29 ` Paul Menage
2007-04-05 12:43 ` Srivatsa Vaddagiri
2007-04-05 14:13 ` Srivatsa Vaddagiri
2007-04-05 14:13 ` Paul Menage
2007-04-05 14:46 ` Srivatsa Vaddagiri
2007-04-03 17:34 ` Srivatsa Vaddagiri
2007-04-03 17:29 ` Paul Menage
2007-04-03 16:10 ` Srivatsa Vaddagiri
2007-04-03 15:41 ` Serge E. Hallyn
2007-02-12 9:18 ` [PATCH 0/7] containers (V7): Generic Process Containers Paul Jackson
2007-02-12 9:32 ` Paul Menage
2007-02-12 9:52 ` Paul Jackson
2007-02-12 22:38 ` Sam Vilain
2007-02-12 22:47 ` Serge E. Hallyn
2007-02-12 23:18 ` Paul Menage
2007-02-12 23:15 ` Paul Menage
2007-02-13 0:30 ` Sam Vilain
2007-02-13 0:42 ` [ckrm-tech] " Paul Menage
2007-02-13 1:13 ` Sam Vilain
2007-02-13 1:47 ` Paul Menage
2007-02-20 17:34 ` Eric W. Biederman
2007-02-20 17:55 ` Paul Menage
2007-02-20 19:29 ` Eric W. Biederman
2007-02-20 22:47 ` Paul Menage
2007-02-20 23:08 ` Sam Vilain
2007-02-20 23:36 ` Paul Menage
2007-02-20 23:32 ` Serge E. Hallyn
2007-02-20 21:58 ` Sam Vilain
2007-02-20 22:19 ` Paul Menage
2007-02-20 22:58 ` Sam Vilain
2007-02-20 23:28 ` Paul Menage
2007-02-20 23:37 ` Serge E. Hallyn
[not found] ` <20070212085104.485337000@menage.corp.google.com>
2007-02-12 15:27 ` [PATCH 3/7] containers (V7): Add generic multi-subsystem API to containers Srivatsa Vaddagiri
2007-02-12 18:40 ` Paul Menage
2007-02-13 13:19 ` Srivatsa Vaddagiri
2007-02-15 1:17 ` Paul Menage
2007-02-12 15:39 ` Serge E. Hallyn
2007-02-12 15:56 ` Cedric Le Goater
2007-02-12 18:31 ` Paul Menage
2007-02-14 8:49 ` Balbir Singh
2007-03-08 17:52 ` Srivatsa Vaddagiri
2007-03-24 12:51 ` [ckrm-tech] " Srivatsa Vaddagiri
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=20070324184128.e8b34a3e.pj@sgi.com \
--to=pj@sgi.com \
--cc=ckrm-tech@lists.sourceforge.net \
--cc=containers@lists.osdl.org \
--cc=dev@sw.ru \
--cc=devel@openvz.org \
--cc=ebiederm@xmission.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mbligh@google.com \
--cc=menage@google.com \
--cc=rohitseth@google.com \
--cc=sekharan@us.ibm.com \
--cc=serue@us.ibm.com \
--cc=vatsa@in.ibm.com \
--cc=winget@google.com \
--cc=xemul@sw.ru \
/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.