kern/112984: Xorg 7.2 locks up with AIGLX enabled on the r300 driver.

[Adam K Kirchhoff]

>Number:         112984
>Category:       kern
>Synopsis:       Xorg 7.2 locks up with AIGLX enabled on the r300 driver.
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri May 25 10:10:06 GMT 2007
>Closed-Date:
>Last-Modified:
>Originator:     Adam K Kirchhoff
>Release:        FreeBSD 7.0-CURRENT i386
>Organization:
none
>Environment:
FreeBSD memory.visualtech.com 7.0-CURRENT FreeBSD 7.0-CURRENT #0: Tue May 22 18:54:12 EDT 2007     root at memory.visualtech.com:/usr/obj/usr/src/sys/GENERIC  i386

>Description:

With Xorg 7.2, if I enabled AIGLX, the X server locks up.  I am able to login via a serial console and reboot.  This happens with the DRM in -CURRENT (1.25) and with the DRM supplied by Jung-uk Kim (1.27).


The serial console displays:

drm0: <ATI Radeon RV410 X700 Pro> on vgapci0
info: [drm] AGP at 0xc0000000 256MB
info: [drm] Initialized radeon 1.27.0 20060524
info: [drm] Setting GART location based on new memory map
info: [drm] Loading R300 Microcode
info: [drm] writeback test succeeded in 1 usecs
drm0: [ITHREAD]
error: [drm:pid1106:radeon_cp_buffers] *ERROR* radeon_cp_buffers called without lock held
error: [drm:pid1106:radeon_cp_reset] *ERROR* radeon_cp_reset called without lock held
error: [drm:pid1106:radeon_cp_start] *ERROR* radeon_cp_start called without lock held
error: [drm:pid1106:radeon_cp_buffers] *ERROR* radeon_cp_buffers called without lock held
error: [drm:pid1106:radeon_cp_reset] *ERROR* radeon_cp_reset called without lock held
error: [drm:pid1106:radeon_cp_start] *ERROR* radeon_cp_start called without lock held

The last six lines are repated indefinitely.
>How-To-Repeat:

Install Xorg 7.2, enable AIGLX in your xorg.conf file, and run Xorg on an r300 or newer card (though I understand this is true for all radeon cards).


>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: