xf86-video-intel 1.9.94: crash in I830ScreenInit on 965 hardware

[Barry Scott]

I'm testing Xorg 7.2 + updated modules needed to support intel 1.9.94
running on 2.6.20 linux kernel with its drm drivers. I have built all of 
Xorg
and Mesa.

I'm seeing a crash in the Xserver. Here is the config and log.

http://www.onelan.co.uk/xorg-tmp/965.conf
http://www.onelan.co.uk/xorg-tmp/xserver-965.log

Here is the output from gdb with info from the crash site and symbols.

How can I help debug this?

: [1] root @ NTB 7500 # gdb /usr/bin/Xorg
GNU gdb Red Hat Linux (6.3.0.0-1.21rh)
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This GDB was configured as "i386-redhat-linux-gnu"...Using host 
libthread_db library "/lib/libthread_db.so.1".

(gdb) run :0 -nolisten tcp -br vt7 -dpi 75 -logfile 
/data/data/logs/screen-server.log -config /etc/onelan/ntb/x.conf
Starting program: /usr/bin/Xorg :0 -nolisten tcp -br vt7 -dpi 75 
-logfile /data/data/logs/screen-server.log -config /etc/onelan/ntb/x.conf
Reading symbols from shared object read from target memory...done.
Loaded system supplied DSO at 0x3dd000

This is a pre-release version of the X server from The X.Org Foundation.
It is not supported in any way.
Bugs may be filed in the bugzilla at http://bugs.freedesktop.org/.
Select the "xorg" product for bugs you find in this release.
Before reporting bugs in pre-release versions please check the
latest version in the X.Org Foundation git repository.
See http://wiki.x.org/wiki/GitPage for git access instructions.

X Window System Version 1.2.99.903 (1.3.0 RC 3)
Release Date: 26 March 2007
X Protocol Version 11, Revision 0, Release 1.2.99.903
Build Operating System: UNKNOWN
Current Operating System: Linux localhost 2.6.20-91.ONELAN #1 SMP Tue 
Feb 27 18:42:34 GMT 2007 i686
Build Date: 10 April 2007
        Before reporting problems, check http://wiki.x.org
        to make sure that you have the latest version.
Module Loader present
Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(++) Log file: "/data/data/logs/screen-server.log", Time: Thu Apr 12 
17:38:20 2007
(++) Using config file: "/etc/onelan/ntb/x.conf"
[tcsetpgrp failed in terminal_inferior: Operation not permitted]

Program received signal SIGSEGV, Segmentation fault.
0x00f25da5 in I830ScreenInit (scrnIndex=0, pScreen=0x96066f8, argc=12, 
argv=0xbf9a1354) at i830_driver.c:2548
warning: Source file is more recent than executable.

2548             if (pI830->LinearAlloc &&
(gdb) bt
#0  0x00f25da5 in I830ScreenInit (scrnIndex=0, pScreen=0x96066f8, 
argc=12, argv=0xbf9a1354) at i830_driver.c:2548
#1  0x080703ad in AddScreen (pfnInit=0xf24aa8 <I830ScreenInit>, argc=12, 
argv=0xbf9a1354) at main.c:773
#2  0x0809cffa in InitOutput (pScreenInfo=0x81dd140, argc=12, 
argv=0xbf9a1354) at xf86Init.c:924
#3  0x0806fcc7 in main (argc=12, argv=0xbf9a1354, envp=0xbf9a1388) at 
main.c:370
(gdb) up
#1  0x080703ad in AddScreen (pfnInit=0xf24aa8 <I830ScreenInit>, argc=12, 
argv=0xbf9a1354) at main.c:773
773     main.c: No such file or directory.
        in main.c
(gdb) down
#0  0x00f25da5 in I830ScreenInit (scrnIndex=0, pScreen=0x96066f8, 
argc=12, argv=0xbf9a1354) at i830_driver.c:2548
2548             if (pI830->LinearAlloc &&
(gdb) l
2543             if (!I830InitFBManager(pScreen, &(pI830->FbMemBox))) {
2544                xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
2545                           "Failed to init memory manager\n");
2546             }
2547
2548             if (pI830->LinearAlloc &&
2549                 xf86InitFBManagerLinear(pScreen,
2550                                         pI830->xaa_linear->offset / 
pI830->cpp,
2551                                         pI830->xaa_linear->size / 
pI830->cpp))
2552             {
(gdb)