Created attachment 127334 [details]
gpu hang dmesg with counter strike: global offensive

To document this:
csgo ran fine, although very slow with stock 4.9-rc1. I did not try for very
long, so perhaps it would still have happened after a while.

The performance issue was identified to be caused by
87744ab3832b83ba71b931f86f9cfdb000d07da5

After reverting this commit on 4.9-rc1, I still do not get GPU hangs with
unigine heaven, but I start seeing GPU hangs with csgo.

Maybe not the same issue, but it doesn't happen on 4.8.