SELinux is preventing gstglcontext from write access on the file /memfd:/.nvidia_drv.XXXXXX (deleted).

*****  Plugin restorecon (99.5 confidence) suggests   ************************

If you want to fix the label. 
/memfd:/.nvidia_drv.XXXXXX (deleted) default label should be default_t.
Then you can run restorecon. The access attempt may have been stopped due to insufficient permissions to access a parent directory in which case try to change the following command accordingly.
Do
# /sbin/restorecon -v /memfd:/.nvidia_drv.XXXXXX (deleted)

*****  Plugin catchall (1.49 confidence) suggests   **************************

If you believe that gstglcontext should be allowed write access on the .nvidia_drv.XXXXXX (deleted) 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 'gstglcontext' --raw | audit2allow -M my-gstglcontext
# semodule -X 300 -i my-gstglcontext.pp

Additional Information:
Source Context                unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023
Target Context                system_u:object_r:xserver_tmpfs_t:s0
Target Objects                /memfd:/.nvidia_drv.XXXXXX (deleted) [ file ]
Source                        gstglcontext
Source Path                   gstglcontext
Port                          <Unknown>
Host                          coyote
Source RPM Packages           
Target RPM Packages           
SELinux Policy RPM            selinux-policy-targeted-3.14.6-36.fc33.noarch
Local Policy RPM              selinux-policy-targeted-3.14.6-36.fc33.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     coyote
Platform                      Linux coyote 5.11.11-200.fc33.x86_64 #1 SMP Tue
                              Mar 30 16:53:32 UTC 2021 x86_64 x86_64
Alert Count                   14
First Seen                    2021-04-10 20:54:09 MDT
Last Seen                     2021-04-13 10:52:06 MDT
Local ID                      97b55286-0131-46f4-86ad-481e32b4563f

Raw Audit Messages
type=AVC msg=audit(1618332726.288:964): avc:  denied  { write } for  pid=129605 comm="gstglcontext" path=2F6D656D66643A2F2E6E76696469615F6472762E585858585858202864656C6574656429 dev="tmpfs" ino=1025 scontext=unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023 tcontext=system_u:object_r:xserver_tmpfs_t:s0 tclass=file permissive=0


Hash: gstglcontext,thumb_t,xserver_tmpfs_t,file,write