Comment # 168 on bug 79980 from DJ Dunn

if this helps any, I've been seeing the same error on my gentoo box, its near
constant on 3.16+ kernels within 2 or 3 min of loging in X but, ive been seeing
it very rarely (once every few hours) on 3.14.22 but still seeing it, and I
never seen it happen on 3.14.19

gentoo box with mesa-10.3.1 xorg-server-1.16.1