On Wed, May 9, 2018 at 12:34 PM, Matt Turner <matts...@gentoo.org> wrote: > On Tue, May 8, 2018 at 11:51 PM, Dennis Schridde <devuran...@gmx.net> wrote: >> Hello! >> >> I see sandbox violations similar to "ACCESS DENIED: open_wr: /dev/dri/ >> renderD128" pop up for more and more packages, probably since OpenCL becomes >> used more widely. Hence I would like to ask: Could we in Gentoo treat GPUs >> just like CPUs and allow any process to access render nodes (i.e. the GPUs >> compute capabilities via the specific interface the Linux kernel's DRM offers >> for that purpose) without sandbox restrictions? >> >> --Dennis >> >> See-Also: https://bugs.gentoo.org/654216 > > This seems like a bad idea. With CPUs we've had decades to work out > how to isolate processes and prevent them from taking down the system. > > GPUs are not there yet. It's simple to trigger an unrecoverable GPU > hang and not much harder to turn it into a full system lock up. > > This is not safe. >
It's worth noting that the default rules shipped with udev assign mode 0666 to the /dev/dri/renderD* device nodes. So, outside of a sanbox environment, any user may access these devices. This was merged as part of this PR: https://github.com/systemd/systemd/pull/7112
