Description of problem:
SELinux is preventing (fprintd) from 'mounton' accesses on the directory /var/lib/fprint.

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

If you believe that (fprintd) should be allowed mounton access on the fprint directory 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 '(fprintd)' --raw | audit2allow -M my-fprintd
# semodule -X 300 -i my-fprintd.pp

Additional Information:
Source Context                system_u:system_r:init_t:s0
Target Context                system_u:object_r:fprintd_var_lib_t:s0
Target Objects                /var/lib/fprint [ dir ]
Source                        (fprintd)
Source Path                   (fprintd)
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           fprintd-0.8.0-1.fc28.x86_64
Policy RPM                    selinux-policy-3.13.1-285.fc28.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed)
                              4.14.0-0.rc0.git6.1.fc28.x86_64+debug #1 SMP Thu
                              Sep 14 17:56:05 UTC 2017 x86_64 x86_64
Alert Count                   16
First Seen                    2017-09-15 20:45:13 +05
Last Seen                     2017-09-17 00:58:49 +05
Local ID                      6624c795-d8a8-4ee7-ae48-f7c086aeccf0

Raw Audit Messages
type=AVC msg=audit(1505591929.525:3748): avc:  denied  { mounton } for  pid=20913 comm="(fprintd)" path="/var/lib/fprint" dev="sda1" ino=3539114 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:fprintd_var_lib_t:s0 tclass=dir permissive=0


Hash: (fprintd),init_t,fprintd_var_lib_t,dir,mounton

Version-Release number of selected component:
selinux-policy-3.13.1-285.fc28.noarch

Additional info:
component:      selinux-policy
reporter:       libreport-2.9.2
hashmarkername: setroubleshoot
kernel:         4.14.0-0.rc0.git6.1.fc28.x86_64+debug
type:           libreport

Potential duplicate: bug 1491809