Re: No need for 2.4.23 (re compromise)

[Andreas Goesele <Goesele@hfph.mwn.de>]

Mark C <lists@funkypenguin.net> writes:

> same here from the debian sources, but with a few added patches, 
> there is no need to download a new kernel, just get the source you have
> for the currently running kernel, apply this patch:
> 
> ---------------------- cut ---------------------
> --- 1.31/mm/mmap.c      Fri Sep 12 06:44:06 2003
> +++ 1.32/mm/mmap.c      Thu Oct  2 01:18:19 2003
> @@ -1041,6 +1041,9 @@
>         if (!len)
>                 return addr;
>   
> +       if ((addr + len) > TASK_SIZE || (addr + len) < addr)
> +               return -EINVAL;
> +
>         /*
>          * mlock MCL_FUTURE?
>          */
> ---------------------- cut ---------------------
> 
> and recompile, this was taken originally from, Debian Planet.

With 2.4.21 I get:

$ patch -p1 < mm.patch
patching file mm/mmap.c
Hunk #1 FAILED at 1041.
1 out of 1 hunk FAILED -- saving rejects to file mm/mmap.c.rej

In mmap.c.rej I find:


**************
*** 1041,1046 ****
         if (!len)
                 return addr;

         /*
          * mlock MCL_FUTURE?
          */
--- 1041,1049 ----
         if (!len)
                 return addr;

+        if ((addr + len) > TASK_SIZE || (addr + len) < addr)
+                return -EINVAL;
+
         /*
          * mlock MCL_FUTURE?
          */

What am I doing wrong?

Andreas Goesele

-- 
Omnis enim res, quae dando non deficit, dum habetur et non datur,
nondum habetur, quomodo habenda est.
                                      Augustinus, De doctrina christiana