Description of problem:
Logged into graphical Wayland GNOME session as staff_r user, Wayland/Gnome-shell crashed and when I log in again, there's this denial.
This could be preventing good core dumps from being captured for these lovely gnome-shell crashes?
SELinux is preventing abrt-action-gen from 'map' accesses on the file /var/spool/abrt/ccpp-2018-02-12-09:44:13.351807-3048/coredump.

*****  Plugin catchall (100. confidence) suggests   **************************

If you believe that abrt-action-gen should be allowed map access on the coredump 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 'abrt-action-gen' --raw | audit2allow -M my-abrtactiongen
# semodule -X 300 -i my-abrtactiongen.pp

Additional Information:
Source Context                staff_u:staff_r:staff_t:s0-s0:c0.c1023
Target Context                system_u:object_r:abrt_var_cache_t:s0
Target Objects                /var/spool/abrt/ccpp-2018-02-12-09:44:13.351807-30
                              48/coredump [ file ]
Source                        abrt-action-gen
Source Path                   abrt-action-gen
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-283.24.fc27.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 4.14.16-300.fc27.x86_64 #1 SMP Wed
                              Jan 31 19:24:27 UTC 2018 x86_64 x86_64
Alert Count                   1
First Seen                    2018-02-12 09:44:56 AEDT
Last Seen                     2018-02-12 09:44:56 AEDT
Local ID                      0b2392bd-7efe-4f8e-9a77-3497300c787c

Raw Audit Messages
type=AVC msg=audit(1518389096.688:383): avc:  denied  { map } for  pid=9391 comm="abrt-action-gen" path="/var/spool/abrt/ccpp-2018-02-12-09:44:13.351807-3048/coredump" dev="dm-1" ino=761315 scontext=staff_u:staff_r:staff_t:s0-s0:c0.c1023 tcontext=system_u:object_r:abrt_var_cache_t:s0 tclass=file permissive=0


Hash: abrt-action-gen,staff_t,abrt_var_cache_t,file,map

Version-Release number of selected component:
selinux-policy-3.13.1-283.24.fc27.noarch

Additional info:
component:      selinux-policy
reporter:       libreport-2.9.3
hashmarkername: setroubleshoot
kernel:         4.14.16-300.fc27.x86_64
type:           libreport