Radeon DRM issues and filling up /var/log with gigabytes of logging

[Philip A. Prindeville]

I'm running FC11 with:

xorg-x11-server-Xorg-1.6.4-0.1.fc11.x86_64
xorg-x11-drv-ati-6.12.2-14.fc11.x86_64
kernel-2.6.30.9-92.fc11.x86_64

etc.

The hardware is an Asus M3A78-CM motherboard with onboard video.

I'm seeing the following filling up my /var partition in 
/var/log/Xorg.0.log:

(EE) RADEON(0): RADEONCPGetBuffer: CP GetBuffer -22
(EE) RADEON(0): GetBuffer timed out, resetting engine...
(EE) RADEON(0): RADEONCPGetBuffer: CP reset -22
(EE) RADEON(0): RADEONCPGetBuffer: CP start -22
(EE) RADEON(0): RADEONCPGetBuffer: CP GetBuffer -22
(EE) RADEON(0): GetBuffer timed out, resetting engine...
(EE) RADEON(0): RADEONCPGetBuffer: CP reset -22
(EE) RADEON(0): RADEONCPGetBuffer: CP start -22


and in /var/log/messages:

Oct 26 14:19:17 builder kernel: __ratelimit: 22901 callbacks suppressed
Oct 26 14:19:17 builder kernel: [drm:radeon_cp_reset] *ERROR* radeon_cp_reset called without lock held, held  0 owner ffff88021d892b40 ffff88021d892b40
Oct 26 14:19:17 builder kernel: [drm:radeon_cp_start] *ERROR* radeon_cp_start called without lock held, held  0 owner ffff88021d892b40 ffff88021d892b40
Oct 26 14:19:17 builder kernel: [drm:radeon_cp_buffers] *ERROR* radeon_cp_buffers called without lock held, held  0 owner ffff88021d892b40 ffff88021d892b40
Oct 26 14:19:17 builder kernel: [drm:radeon_cp_reset] *ERROR* radeon_cp_reset called without lock held, held  0 owner ffff88021d892b40 ffff88021d892b40
Oct 26 14:19:17 builder kernel: [drm:radeon_cp_start] *ERROR* radeon_cp_start called without lock held, held  0 owner ffff88021d892b40 ffff88021d892b40
Oct 26 14:19:17 builder kernel: [drm:radeon_cp_buffers] *ERROR* radeon_cp_buffers called without lock held, held  0 owner ffff88021d892b40 ffff88021d892b40
Oct 26 14:19:17 builder kernel: [drm:radeon_cp_reset] *ERROR* radeon_cp_reset called without lock held, held  0 owner ffff88021d892b40 ffff88021d892b40
Oct 26 14:19:17 builder kernel: [drm:radeon_cp_start] *ERROR* radeon_cp_start called without lock held, held  0 owner ffff88021d892b40 ffff88021d892b40



I wasn't getting these when I was running FC10, which supposedly came 
with an earlier version of xorg-x11-drv-*... or possibly the kernel (and 
the DRM modules).

This is rendering the machine largely unusable, because rpmbuild, mock, 
sendmail, etc. all need large amounts of space on /var.

My config file is below.

Anyone know what the remedy to this issue is?

Thanks,

-Philip

===== xorg.conf =====

# Xorg configuration created by system-config-display

# added by philipp
Section "Module"
        Load  "dbe"
        Load  "extmod"
        Load  "fbdevhw"
        Load  "glx"
        # Load  "record"
        Load  "freetype"
        # Load  "type1"
        Load  "dri"
        Load  "vnc"
EndSection

Section "ServerLayout"
        Identifier     "single head configuration"
        Screen      0  "Screen0" 0 0
        InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "InputDevice"

# keyboard added by rhpxl
        Identifier  "Keyboard0"
        Driver      "kbd"
        Option      "XkbModel" "pc105"
        Option      "XkbLayout" "us"
EndSection

Section "Device"
        Identifier  "Videocard0"
        Driver      "radeon"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     24
        EndSubSection
        # added by philipp
        Option "SecurityTypes" "None"
EndSection