Re: timer + fpu stuff locks my console race

From: stian@nixia.no
To: linux-kernel@vger.kernel.org
Subject: Re: timer + fpu stuff locks my console race
Date: Sat, 12 Jun 2004 15:28:40 +0200 (CEST)	[thread overview]
Message-ID: <1404.83.109.11.80.1087046920.squirrel@nepa.nlc.no> (raw)

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:
