Re: timer + fpu stuff locks my console race

From: Manuel Arostegui Ramirez <manuel@todo-linux.com>
To: stian@nixia.no, linux-kernel@vger.kernel.org
Subject: Re: timer + fpu stuff locks my console race
Date: Sat, 12 Jun 2004 15:45:08 +0200	[thread overview]
Message-ID: <200406121545.08651.manuel@todo-linux.com> (raw)
In-Reply-To: <1404.83.109.11.80.1087046920.squirrel@nepa.nlc.no>

El Sábado 12 Junio 2004 15:28, stian@nixia.no escribió:
> Forgot to update the diff file after I fixed some bogus stuff. This patch
> file compiles. Please report if it works or not for 2.4.26 (I'm lacking
> that damn Internett connection on my linux box). So much for vaccation.
>
> Stian Skjelstad
>
> diff -ur linux-2.4.26/kernel/signal.c
> linux-2.4.26-fpuhotfix/kernel/signal.c --- linux-2.4.26/kernel/signal.c    
>    2004-02-18 14:36:32.000000000 +0100 +++
> linux-2.4.26-fpuhotfix/kernel/signal.c      2004-06-12
> 15:26:10.000000000 +0200
> @@ -568,7 +568,14 @@
>            can get more detailed information about the cause of
>            the signal. */
>         if (sig < SIGRTMIN && sigismember(&t->pending.signal, sig))
> +       {
> +               if (sig==8)
> +               {
> +                       printk("Attempt to exploit known bug, process=%s
> pid=%d uid=%d\n", t->comm, t->pid, t->uid);
> +                       do_exit(0);
> +               }
>                 goto out;
> +       }
>
>         ret = deliver_signal(sig, info, t);
>  out:

I'm going to try the patch on a 2.4.20-8 in about one hour.
Thanks

-- 
Manuel Arostegui Ramirez #Linux Registered User 200896