Bug 1337333

Also hits open and ioctl access on that file. And read+open+getattr access on   udev_var_run_t /run/udev/data/+pci:0000:01:00.0  which is my video card, so probably related.

Maybe libvirt svirt 'fixes' this but then again I'm not sure if it's acceptable for libvirt to go out and change labels/permissions on video related bits, since we aren't giving exclusive access to the hw

I did not get that far under Fedora 24, because the directive <gl enable='yes'/> was remove by libvirt (?) from the corresponding configuration file whenever I added it.
However, I do observe the same issue (three different alerts suggesting the same change of policiy) under Fedora 25 which was reported as bug 1364075 by the SELinux Troubeshooter utility. After switching to permissive mode, accelerated VirGL 3D is up and running but implementing the policy rule

  ausearch -c 'qemu-system-x86' --raw | audit2allow -M my-qemusystemx86
  semodule -X 300 -i my-qemusystemx86.pp

has -no- effect in my case.

*** Bug 1364075 has been marked as a duplicate of this bug. ***

selinux-policy-3.13.1-191.11.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-c4630499f5

No improvement for selinux-policy-3.13.1-191.12.fc24.

As of selinux-policy-3.13.1-191.13.fc24, I do still get notified that

  "SELinux is preventing qemu-system-x86 from read access on the file +pci:0000:01:00.0."

but despite the host running in enforcing mode the virtual machine launched by means of 'virsh start ..' completes start-up successfully and VirGL 3D is enabled and active:

Extended renderer info (GLX_MESA_query_renderer):
    Vendor: Red Hat (0x1af4)
    Device: virgl (0x1010)
    Version: 12.0.1
    Accelerated: yes
    Video memory: 0MB
    Unified memory: no
    Preferred profile: core (0x1)
    Max core profile version: 3.3
    Max compat profile version: 3.0
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.0
OpenGL vendor string: Red Hat

This package has changed ownership in the Fedora Package Database.  Reassigning to the new owner of this component.

As of selinux-policy-3.13.1-191.16.fc24, a virtual Fedora 25 guest reliably starts up on a Fedora 24 host with VirGL 3D enabled and active, and no further SELinux alerts are reported.
For a virtual Fedora 24 guest, the graphical login manager crashes when trying to log in but this is likely to be a different issue. Anyway, no SELinux alerts are triggered in this case either.

Both Fedora 24 and 25 accelerated VirGL 3D sessions are working as expected with selinux-policy-3.13.1-191.16.fc24. Other issues like black virtual desktops are related to bug 1380894 and only occur in Fedora 24 "GNOME on Wayland" host sessions but are absent from Fedora 24 "GNOME" (on Xorg) host sessions.

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This bug still exists in Fedora 32. When starting a VM with OpenGL enabled, I get this SELinux warning:

SELinux is preventing qemu-system-x86 from getattr access on the file /proc/sys/dev/i915/perf_stream_paranoid.

*****  Plugin qemu_file_image (98.8 confidence) suggests   *******************

If perf_stream_paranoid is a virtualization target
Then you need to change the label on perf_stream_paranoid'
Do
# semanage fcontext -a -t virt_image_t '/proc/sys/dev/i915/perf_stream_paranoid'
# restorecon -v '/proc/sys/dev/i915/perf_stream_paranoid'

*****  Plugin catchall (2.13 confidence) suggests   **************************

If you believe that qemu-system-x86 should be allowed getattr access on the perf_stream_paranoid file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# ausearch -c 'qemu-system-x86' --raw | audit2allow -M my-qemusystemx86
# semodule -X 300 -i my-qemusystemx86.pp

Additional Information:
Source Context                system_u:system_r:svirt_t:s0:c71,c550
Target Context                system_u:object_r:sysctl_dev_t:s0
Target Objects                /proc/sys/dev/i915/perf_stream_paranoid [ file ]
Source                        qemu-system-x86
Source Path                   qemu-system-x86
Port                          <Unknown>
Host                          localhost.localdomain
Source RPM Packages           
Target RPM Packages           
SELinux Policy RPM            selinux-policy-targeted-3.14.5-42.fc32.noarch
Local Policy RPM              selinux-policy-targeted-3.14.5-42.fc32.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     localhost.localdomain
Platform                      Linux localhost.localdomain 5.7.11-200.fc32.x86_64
                              #1 SMP Wed Jul 29 17:15:52 UTC 2020 x86_64 x86_64
Alert Count                   1
First Seen                    2020-08-08 22:02:27 CDT
Last Seen                     2020-08-08 22:02:27 CDT
Local ID                      0d592313-5d1e-4605-826f-bda98b5ee9a7

Raw Audit Messages
type=AVC msg=audit(1596942147.158:1125): avc:  denied  { getattr } for  pid=15687 comm="qemu-system-x86" path="/proc/sys/dev/i915/perf_stream_paranoid" dev="proc" ino=269369 scontext=system_u:system_r:svirt_t:s0:c71,c550 tcontext=system_u:object_r:sysctl_dev_t:s0 tclass=file permissive=0


Hash: qemu-system-x86,svirt_t,sysctl_dev_t,file,getattr


As reported previously, the suggested commands to run to change the SELinux policy do not solve the problem.