Description of problem:
SELinux is preventing df from 'getattr' accesses on the directory /sys/kernel/config.

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

If cree que de manera predeterminada, df debería permitir acceso getattr sobre config directory.     
Then debería reportar esto como un error.
Puede generar un módulo de política local para permitir este acceso.
Do
allow this access for now by executing:
# ausearch -c df --raw | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:httpd_t:s0
Target Context                system_u:object_r:configfs_t:s0
Target Objects                /sys/kernel/config [ dir ]
Source                        df
Source Path                   df
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    <Unknown>
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 4.4.6-301.fc23.i686 #1 SMP Wed Mar
                              30 18:11:04 UTC 2016 i686 i686
Alert Count                   8
First Seen                    2016-04-22 15:06:37 PET
Last Seen                     2016-04-22 15:16:32 PET
Local ID                      2636de4f-6735-42aa-8638-d439a4e5e144

Raw Audit Messages
type=AVC msg=audit(1461356192.880:848): avc:  denied  { getattr } for  pid=13221 comm="df" path="/sys/kernel/config" dev="configfs" ino=1863 scontext=system_u:system_r:httpd_t:s0 tcontext=system_u:object_r:configfs_t:s0 tclass=dir permissive=0


Hash: df,httpd_t,configfs_t,dir,getattr


Additional info:
reporter:       libreport-2.6.4
hashmarkername: setroubleshoot
kernel:         4.4.6-301.fc23.i686
type:           libreport

Potential duplicate: bug 1024468