On Thu, Dec 09, 2004 at 01:20:18PM -0800, Debian Bug Tracking System wrote:
> This is an automatic notification regarding your Bug report
> #277884: xserver-xfree86: X segfaults on AMD64 with noexec enabled,
> which was filed against the xserver-xfree86 package.
>
> It has been closed by one of the developers, namely
> fabbione@fabbione.net (Fabio M. Di Nitto).
...
> Changes:
> xfree86 (4.3.0.dfsg.1-9) unstable; urgency=high
> Changes by Branden Robinson:
> * Apply some fixes to the XFree86 X server's ELF object loader:
> + Stop conditionally #including <sys/mman.h> since it is unconditionally
> imported earlier in the file.
> + Perform an mprotect() for AMD64 Linux systems as well as OpenBSD to
^^^^^^
All 32bit systems that supports the nx feature (as listed in /proc/cpuinfo)
need this. I even _think_ some CPUs that support nx but not long-mode
exist. (Maybe the Sempron.)
> prevent SEGVs on NX-enabled kernels. (Closes: #277699)
> + Fix a problem with parentheses when using the preprocessor (doesn't
> affect Debian, but would cause unexpected behavior on OpenBSD).
Unfortunately, it doesn't help on my Athlon 64 w/ a Radeon AIW vid card.
This is with a 32bit 2.6.10-rc2-mm4 kernel, compiled with highmem64g (to
enable third-level pagetable support). I'm running Sarge, but I upgraded my
X packages to test this. (libc6 is still 2.3.2.ds1-18, though.)
My X server log looks like:
XFree86 Version 4.3.0.1 (Debian 4.3.0.dfsg.1-9 20041209161604 fabbione@fabbione.net)
Release Date: 15 August 2003
X Protocol Version 11, Revision 0, Release 6.6
Build Operating System: Linux 2.4.26 i686 [ELF]
Build Date: 09 December 2004
This version of XFree86 has been extensively modified by the Debian
...
Module Loader present
OS Kernel: Linux version 2.6.10-rc2-mm4-vanilla (peter@holly.cordes.ca) (gcc version 3.4.2 (Debian 3.4.2-2)) #2 Sat Dec 11 16:50:43 AST 2004
Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/XFree86.0.log", Time: Sat Dec 11 21:15:49 2004
(==) Using config file: "/etc/X11/XF86Config-4"
(==) ServerLayout "Default Layout"
(**) |-->Screen "Default Screen" (0)
(**) | |-->Monitor "mag"
(**) | |-->Device "ati"
(**) |-->Input Device "Generic Keyboard"
(**) Option "XkbRules" "xfree86"
(**) XKB: rules: "xfree86"
(**) Option "XkbModel" "pc104"
(**) XKB: model: "pc104"
(**) Option "XkbLayout" "us"
(**) XKB: layout: "us"
(**) Option "XkbOptions" "ctrl:nocaps"
(**) XKB: options: "ctrl:nocaps"
(==) Keyboard: CustomKeycode disabled
(**) |-->Input Device "Configured Mouse"
(**) |-->Input Device "Serial Mouse"
(WW) The directory "/usr/lib/X11/fonts/cyrillic" does not exist.
Entry deleted from font path.
(WW) The directory "/usr/lib/X11/fonts/CID" does not exist.
Entry deleted from font path.
(**) FontPath set to "unix/:7100,/usr/lib/X11/fonts/misc,/usr/lib/X11/fonts/100dpi/:unscaled,/usr/lib/X11/fonts/75dpi/:unscaled,/usr/lib/X11/fonts/Type1,/usr/lib/X11/fonts/Speedo,/usr/lib/X11/fonts/100dpi,/usr/lib/X11/fonts/75dpi"
(==) RgbPath set to "/usr/X11R6/lib/X11/rgb"
(==) ModulePath set to "/usr/X11R6/lib/modules"
(**) Option "AllowMouseOpenFail" "true"
(--) using VT number 7
(WW) Open APM failed (/dev/apm_bios) (No such file or directory)
(II) Module ABI versions:
XFree86 ANSI C Emulation: 0.2
XFree86 Video Driver: 0.6
XFree86 XInput driver : 0.4
XFree86 Server Extension : 0.2
XFree86 Font Renderer : 0.4
(II) Loader running on linux
(II) LoadModule: "bitmap"
(II) Loading /usr/X11R6/lib/modules/fonts/libbitmap.a
(II) Module bitmap: vendor="The XFree86 Project"
compiled for 4.3.0.1, module version = 1.0.0
Module class: XFree86 Font Renderer
ABI class: XFree86 Font Renderer, version 0.4
*** If unresolved symbols were reported above, they might not
*** be the reason for the server aborting.
Fatal server error:
Caught signal 11. Server aborting
When reporting a problem related to a server crash, please send
...
I made sure that all packages mentioned in the update were upgraded to
version 4.3.0.dfsg.1-9, if there were installed at all. (including all the
-dev packages, just to be pedantic :)
X still works fine when the kernel is booted with noexec=off.
--
#define X(x,y) x##y
Peter Cordes ; e-mail: X(peter@cor , des.ca)
"The gods confound the man who first found out how to distinguish the hours!
Confound him, too, who in this place set up a sundial, to cut and hack
my day so wretchedly into small pieces!" -- Plautus, 200 BC
Attachment:
signature.asc
Description: Digital signature