Comment # 1 on bug 88522 from Marek Olšák

Do any of these fix the bug?

R600_DEBUG=nosb
R600_DEBUG=nocpdma
https://bugs.freedesktop.org/attachment.cgi?id=113251
https://bugs.freedesktop.org/attachment.cgi?id=113246
https://bugs.freedesktop.org/attachment.cgi?id=109669