[Bug 17368] New: Lockup in DRM_RADEON_CP_IDLE ioctl during EXA rendering path

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=17368

           Summary: Lockup in DRM_RADEON_CP_IDLE ioctl during EXA rendering
                    path
           Product: xorg
           Version: git
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: mathieu.berard at crans.org
         QAContact: xorg-team at lists.x.org


Created an attachment (id=18588)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=18588)
gdb full bt

Lockup using EXA.
Attached gdb backtrace reveals in-kernel lockup performing a DRM_RADEON_CP_IDLE
ioctl due to EXA accelerated composite activity.

Kernel log is spammed with:
[drm] wait idle failed status : 0x80010140 0x00000000

hardware is a r300 (Mobility radeon X600 SE PCIE) 
I am using compiz.
drm, xorg and DDX driver are of today (30 aug 08) git checkout.


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