[gentoo-hardened] Xorg testing desired

[gentoo-hardened] Xorg testing desired

[Ned Ludd]

On monday May 30th the PaX Team sent me a testing patch for Xorg to make
it fully pic compliant/text relocation free. 
I have been successfully using this patch for a few days now with my
hardware. We would appreciate it if we could get a little more testing
with this before passing it along to our Xorg maintainers and upstream.

http://dev.gentoo.org/~solar/patches/xorg-x11-pic-notextrel.patch

I tested with.
x11-base/xorg-x11-6.8.2-r1  
  +3dfx -3dnow +bitmap-fonts -cjk -debug +dlloader -dmx -doc 
  -font-server +hardened -insecure-drivers -ipv6 +minimal
  +mmx -nls +opengl -pam -sdk +sse -static +truetype-fonts 
  +type1-fonts (-uclibc) +xprint +xv


You can use this command to confirm that it's free of text relocations.
scanelf -tq $(epm -q -l xorg-x11)

# scanelf comes from app-misc/pax-utils
# epm comes from app-portage/epm

Make sure it runs like normal.
Try glxgears before and after if your not using the +minimal USE flag 
and have GL support.

thanks.

-- 
Ned Ludd <solar@gentoo.org>

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Re: [gentoo-hardened] Xorg testing desired

[Kevin F. Quinn]

On 3/6/2005 2:18:15, Ned Ludd (solar@gentoo.org) wrote:
> On monday May 30th the PaX Team sent me a testing patch for Xorg to make
> it fully pic compliant/text relocation free. 
> I have been successfully using this patch for a few days now with my
> hardware. We would appreciate it if we could get a little more testing
> with this before passing it along to our Xorg maintainers and upstream.

Works so far for me, no textrels, with a radeon. Built with:

System uname: 2.6.11-hardened-r13 i686 Mobile Intel(R) Pentium(R) III CPU - M  1200MHz

-3dfx -3dnow -bitmap-fonts -cjk -debug +dlloader -dmx +doc +font-server +hardened -insecure-drivers -ipv6 -minimal +mmx +nls +opengl +pam -sdk +sse -static +truetype-fonts +type1-fonts (-uclibc) +xprint +xv


For info, the modules with textrels currently in 6.8.2-r1 are:

/usr/lib/libOSMesa.so.4.0
/usr/lib/modules/dri/sis_dri.so
/usr/lib/modules/dri/radeon_dri.so
/usr/lib/modules/dri/tdfx_dri.so
/usr/lib/modules/dri/i810_dri.so
/usr/lib/modules/dri/r128_dri.so
/usr/lib/modules/dri/i915_dri.so
/usr/lib/modules/dri/mga_dri.so
/usr/lib/modules/dri/r200_dri.so
/usr/lib/modules/dri/gamma_dri.so
/usr/lib/opengl/xorg-x11/lib/libGL.so.1.2

so in order to perform a useful test, make sure DRI is enabled (which means no xinerama, although with radeons you can have mergedfb - check the Xorg.0.log to see DRI being started ok).  Although the source of textrels is the same for all the dri modules (I think), it'll be useful to have reports for more than one of the DRI modules.

Kev.



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Re: [gentoo-hardened] Xorg testing desired

[Markus Dittrich]

On 6/2/05, Ned Ludd <solar@gentoo.org> wrote:
> On monday May 30th the PaX Team sent me a testing patch for Xorg to make
> it fully pic compliant/text relocation free.
> I have been successfully using this patch for a few days now with my
> hardware. We would appreciate it if we could get a little more testing
> with this before passing it along to our Xorg maintainers and upstream.

Hi Ned,

Works fine here on a Thinkpad T30 with Mobility Radeon 7500

[ebuild   R   ] x11-base/xorg-x11-6.8.2-r1  -3dfx -3dnow +bitmap-fonts
-cjk -debug +dlloader -dmx -doc -font-server +hardened
-insecure-drivers -ipv6 -minimal +mmx +nls +opengl +pam -sdk +sse
-static +truetype-fonts +type1-fonts (-uclibc) +xprint +xv

DRI is enabled and works just fine. All textrels are gone !

Thanks much,
Markus

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