From: Eric Dumazet <eric.dumazet@gmail.com>
To: Dmitry Antipov <dmitry.antipov@linaro.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Module/kthread/printk question/problem
Date: Wed, 01 Feb 2012 18:16:34 +0100 [thread overview]
Message-ID: <1328116594.1882.12.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> (raw)
In-Reply-To: <4F2969B7.4040202@linaro.org>
Le mercredi 01 février 2012 à 20:35 +0400, Dmitry Antipov a écrit :
> On 02/01/2012 08:31 PM, Eric Dumazet wrote:
>
> > Race is here :
> >
> > Here you allow testmod_exit() to continue, while _this_ thread has not
> > yet exited.
> >
> > And if this thread is preempted a litle bit, its code already was freed.
> > -> crash.
>
> I realize this, but there was a second part of the question: what's the
> better way to ensure that all test/X threads are really gone at some point of
> testmod_exit()?
>
You could use kthread_stop()
This way you can control all your kernel threads really exited before
module cleanup.
next prev parent reply other threads:[~2012-02-01 17:16 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-01 16:09 Module/kthread/printk question/problem Dmitry Antipov
2012-02-01 16:31 ` Eric Dumazet
2012-02-01 16:35 ` Dmitry Antipov
2012-02-01 17:16 ` Eric Dumazet [this message]
2012-02-02 6:13 ` Dmitry Antipov
2012-02-02 7:45 ` Eric Dumazet
2012-02-02 9:20 ` Dmitry Antipov
2012-02-02 9:15 ` Eric Dumazet
2012-02-02 9:22 ` Dmitry Antipov
2012-02-02 9:58 ` Eric Dumazet
2012-02-06 23:43 ` Rusty Russell
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