Comment # 3 on bug 82109 from Fabrizio Gennari

Same problem with Firefox 33.0, on Ubuntu 14.10. This is a call stack, taken
from Mozilla's crash report

1     r600_dri.so     r600_dri.so@0x168a34     
2     libgallium.so.0.0.0     libgallium.so.0.0.0@0x327e3     
3     r600_dri.so     r600_dri.so@0x5cba3f     
4     r600_dri.so     r600_dri.so@0x5cbaa7     
5     r600_dri.so     r600_dri.so@0x164a26     
6     r600_dri.so     r600_dri.so@0x16b7fe     
7     r600_dri.so     r600_dri.so@0xf73f3

Package: libgl1-mesa-dri
Architecture: amd64
Version: 10.1.3-0ubuntu0.1