Created attachment 40226 [details]
Xorg log file

Using the a git snapshot from Wednesday (xf86-video-radeon,master) I seem to get crashes when some certain operation happens. I was able to play videos with reduced CPU load and everything was fine untilEclipse reported a "trap divide error" (this may be related or not, don't know). Some minutes later the X-server crashed while I was working in Eclipses debugger. Meanwhile I was able to reproduce this or similar crash 4-5 times, it's almost reliably reproducible with DDD and graphical variable display; double-clicking a
pointer brings the X server down instead of showing buble with the pointed
contents.

I am using a git snapshot from yesterday built with Xorg 1.9 from Debian
Experimental, on a Sid/amd64 system, kernel 2.6.34 with TuxOnIce rc2.

A quick backtrace result is attached. IMHO radeon_vbo_space returns a NULL pointer (vb) which is never checked.