https://bugs.freedesktop.org/show_bug.cgi?id=93301
--- Comment #20 from Marek Olšák maraeo@gmail.com --- (In reply to Thomas DEBESSE from comment #19)
Created attachment 120443 [details] ns2 stdout + gdb full backtrace + libdrm-radeon1-dbg symbols / patched mesa
- R600_DEBUG=info
This looks like the mmap error has been fixed.