https://bugs.freedesktop.org/show_bug.cgi?id=100465
--- Comment #11 from Michel Dänzer michel@daenzer.net --- When R600_DEBUG=check_vm catches a VM fault, it generates a report in ~/ddebug_dumps/ , please attach that here.
A similar report from something like GALLIUM_DDEBUG="pipelined 10000" might give more information.