Description of problem:
SELinux is preventing lightdm-autolog from 'execute' accesses on the Datei /usr/lib/systemd/systemd-coredump.

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

If you believe that lightdm-autolog should be allowed execute access on the systemd-coredump file by default.
Then sie sollten dies als Fehler melden.
Um diesen Zugriff zu erlauben, können Sie ein lokales Richtlinien-Modul erstellen.
Do
allow this access for now by executing:
# ausearch -c 'lightdm-autolog' --raw | audit2allow -M my-lightdmautolog
# semodule -X 300 -i my-lightdmautolog.pp

Additional Information:
Source Context                system_u:system_r:xdm_t:s0-s0:c0.c1023
Target Context                system_u:object_r:systemd_coredump_exec_t:s0
Target Objects                /usr/lib/systemd/systemd-coredump [ file ]
Source                        lightdm-autolog
Source Path                   lightdm-autolog
Port                          <Unbekannt>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           systemd-238-7.fc28.1.x86_64
Policy RPM                    selinux-policy-3.14.1-24.fc28.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 4.16.6-300.fc28.x86_64 #1 SMP Mon
                              Apr 30 14:27:38 UTC 2018 x86_64 x86_64
Alert Count                   32
First Seen                    2018-05-03 11:02:00 CEST
Last Seen                     2018-05-03 16:29:26 CEST
Local ID                      6d821be9-d6d7-4a84-a12f-7ea4b880046c

Raw Audit Messages
type=AVC msg=audit(1525357766.669:387): avc:  denied  { execute } for  pid=5799 comm="lightdm-autolog" name="systemd-coredump" dev="dm-0" ino=1452865 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:systemd_coredump_exec_t:s0 tclass=file permissive=0


Hash: lightdm-autolog,xdm_t,systemd_coredump_exec_t,file,execute

Version-Release number of selected component:
selinux-policy-3.14.1-24.fc28.noarch

Additional info:
component:      selinux-policy
reporter:       libreport-2.9.5
hashmarkername: setroubleshoot
kernel:         4.16.6-300.fc28.x86_64
type:           libreport