From: Oleg Nesterov <oleg@tv-sign.ru>
To: Daniel Hokka Zakrisson <daniel@hozac.com>
Cc: "Serge E. Hallyn" <serue@us.ibm.com>,
linux-kernel@vger.kernel.org,
"Eric W. Biederman" <ebiederm@xmission.com>,
Cedric Le Goater <clg@fr.ibm.com>,
herbert@13thfloor.at, akpm@osdl.org, trond.myklebust@fys.uio.no,
Linux Containers <containers@lists.osdl.org>
Subject: Re: [PATCH] namespaces: fix exit race by splitting exit
Date: Fri, 26 Jan 2007 13:23:15 +0300 [thread overview]
Message-ID: <20070126102315.GA110@tv-sign.ru> (raw)
In-Reply-To: <41241.192.168.101.6.1169806186.squirrel@intranet>
On 01/26, Daniel Hokka Zakrisson wrote:
>
> Serge E. Hallyn wrote:
> > Ok, could you verify that the following patch at least solves
> > the oopsing?
> >
> > (I can't reproduce the oops with Daniel's test prog)
> >
> > thanks,
> > -serge
>
> Indeed, this patch solves the oopsing, but so did the last one. I think I
> finally managed to figure out why too, as release_task would be called
> with current referring to the parent process, or whoever is reaping the
> process with the last reference to the namespace. Right?
Not always. The task can do release_task() on itself if it is sub-thread,
or its parent ignores SIGCHLD.
Anyway I think your explanation is correct for this particular test-case.
Oleg.
prev parent reply other threads:[~2007-01-26 10:25 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-26 5:26 [PATCH] namespaces: fix exit race by splitting exit Serge E. Hallyn
2007-01-26 6:30 ` Andrew Morton
2007-01-30 2:42 ` Herbert Poetzl
2007-01-30 3:00 ` Serge E. Hallyn
2007-01-26 6:36 ` Andrew Morton
2007-01-26 10:09 ` Daniel Hokka Zakrisson
2007-01-26 10:23 ` Oleg Nesterov [this message]
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