Report bug in Opengl accelered :

report glxgear :

radeon: The kernel rejected CS, see dmesg for more information.
EE r600_pipe.c:78 r600_create_fence - r600: too many concurrent fences


And dmesg :

[52416.024710] radeon 0000:02:00.0: forbidden register 0x00028354 at 168
[52416.024713] [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !

In Fedora 16 and kernel 3.2.9-2

My computeur description :

 cat /proc/bus/pci/devices | grep VGA || lspci | grep VGA | colrm 1 4 ; \
> cat /proc/cpuinfo | egrep "model name|MHz" ; \
> xdpyinfo | egrep "version:|dimensions|depth of" ; \
> glxinfo | egrep -A2 "rendering|OpenGL" ; \
> uname -sr;

0.0 VGA compatible controller: ATI Technologies Inc RV770 [Radeon HD 4850]
model name      : AMD Athlon(tm) 64 X2 Dual Core Processor 4600+
cpu MHz         : 1000.000
model name      : AMD Athlon(tm) 64 X2 Dual Core Processor 4600+
cpu MHz         : 1000.000
  dimensions:    2560x1024 pixels (677x270 millimeters)
  depth of root window:    24 planes
ATTENTION: default value of option vblank_mode overridden by environment.
ATTENTION: default value of option vblank_mode overridden by environment.
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
--
OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD RV770
OpenGL version string: 2.1 Mesa 8.1-devel (git-43af02a)
OpenGL shading language version string: 1.20
OpenGL extensions:
    GL_ARB_multisample, GL_EXT_abgr, GL_EXT_bgra, GL_EXT_blend_color, 
    GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_copy_texture, 
Linux 3.2.9-2.fc16.x86_64

Reproductible :
permanently