Re: [RFC][PATCH] Add prctl to set sibling thread names

From: Arjan van de Ven
Date: Wed Oct 21 2009 - 22:47:37 EST


On Thu, 22 Oct 2009 02:49:19 +0200
Andi Kleen <andi@xxxxxxxxxxxxxx> wrote:

> > you're pretty much the first now who touches ->comm from
> > not-the-thread-itself.... are you sure that is safe?
>
> It's not, there is no locking. On the other hand nothing should crash,
> just users might see half rewritten data.

.. with strings this is tricky though.. if the new string is longer
than the old one the terminating zero might just be missed etc.



--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
--
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/