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Description of problem:
The udev rules for kfd should match other drm rules.  Currently the user has to manually adjust the permissions to use the kfd.

How reproducible:
Try to access the kfd device node (/dev/kfd).

Steps to Reproduce:
1. Open the kfd device node

Actual results:
Permission denied.

Expected results:
Permission allowed if user is in the video group.


Additional info:
Please add the following do the default udev configuration:

SUBSYSTEM=="kfd", KERNEL=="kfd", TAG+="uaccess", GROUP="video"

I believe this done upstream a bit differently. Please see:
https://github.com/systemd/systemd/commit/f301622d840ae414e7f56c364fe9b035f3041539

That would be fine as well as long as the permissions are fixed.  Thanks!

I didn't realize this was part of systemd. It uses a different group ("render" instead of "video) than what I see in Ubuntu and RedHat. Do distributions customize this, or will the group name change to the upstream version ("render")?

The systemd commit also doesn't handle the uaccess tag. Maybe that requires another separate rule?

Has the upstream fix been applied to RHEL 7 and 8?

(In reply to Alex Deucher from comment #5)
> Has the upstream fix been applied to RHEL 7 

Not yet.

> and 8?

It's always been there, as the commit was included in systemd-236.

pull request: https://github.com/systemd-rhel/rhel-7/pull/19

fix merged to github master branch -> https://github.com/systemd-rhel/rhel-7/pull/19 -> post

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:1117

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