Re: [PATCH] zlib double-free bug

[Tom Rini]

On Mon, Mar 18, 2002 at 03:49:46PM +0100, J.A. Magallon wrote:
 
> The only rest it leaves in 19-pre3 are:
> 
> ./arch/ppc/boot/lib/zlib.c
> ./arch/ppc/boot/include/zlib.h
> 
> Patch already does:
> 
> --- linux-2.4.19-pre2-ac2/arch/ppc/config.in    Sun Mar  3 18:54:31 2002
> +++ linux-2.4.19-pre2-ac2-zlib/arch/ppc/config.in   Tue Mar  5 08:57:31 2002
> @@ -396,6 +396,8 @@
>     source net/bluetooth/Config.in
>  fi
>  
> +source lib/Config.in
> +  
>  mainmenu_option next_comment
>  comment 'Kernel hacking'
>  
> 
> So wouldn't it be better to kill ppc/.../zlib and make it use also the
> shared copy ?

Not really.  The arch/ppc/boot version (and arch/mips/boot'ish too, when
it gets merged) are slightly different from the in-kernel ones by ~1
line, so that they allow things to be decompressed to 0x0.  My plan for
2.5 is to get the PPC version using the lib/zlib_deflate stuff (by dummy
files doing #include too), maybe.  But either way it's a non-issue (if
you can't trust the 'zImage' binary, you've got bigger problems than
someone trying to expliot a bug before Linux is running).

-- 
Tom Rini (TR1265)
http://gate.crashing.org/~trini/