Re: Module/kthread/printk question/problem

From: Eric Dumazet
Date: Wed Feb 01 2012 - 12:16:36 EST


Le mercredi 01 fÃvrier 2012 Ã 20:35 +0400, Dmitry Antipov a Ãcrit :
> 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.




--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/