Description of problem:
SELinux is preventing /usr/sbin/libvirtd from using the 'signull' accesses on a process.

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

If you believe that libvirtd should be allowed signull access on processes labeled svirt_t 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:
# grep libvirtd /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                staff_u:staff_r:staff_t:s0-s0:c0.c1023
Target Context                staff_u:staff_r:svirt_t:s0:c8,c270
Target Objects                 [ process ]
Source                        libvirtd
Source Path                   /usr/sbin/libvirtd
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           BDB2053 Freeing read locks for locker 0x1907:
                              5540/139953121544128 BDB2053 Freeing read locks
                              for locker 0x1908: 5540/139953121544128 BDB2053
                              Freeing read locks for locker 0x1909:
                              5540/139953121544128 BDB2053 Freeing read locks
                              for locker 0x190a: 5540/139953121544128 libvirt-
                              daemon-0.10.2.2-1.fc18.x86_64
Target RPM Packages           
Policy RPM                    selinux-policy-3.11.1-63.fc18.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Host Name                     (removed)
Platform                      Linux (removed) 3.6.0-0.rc1.git6.1.fc18.x86_64 #1
                              SMP Tue Aug 14 12:13:12 UTC 2012 x86_64 x86_64
Alert Count                   2
First Seen                    2012-12-15 00:32:45 CET
Last Seen                     2012-12-15 00:37:02 CET
Local ID                      aad3591e-4ada-4294-bfc5-399ffeda6294

Raw Audit Messages
type=AVC msg=audit(1355528222.741:12278): avc:  denied  { signull } for  pid=3760 comm="libvirtd" scontext=staff_u:staff_r:staff_t:s0-s0:c0.c1023 tcontext=staff_u:staff_r:svirt_t:s0:c8,c270 tclass=process


type=SYSCALL msg=audit(1355528222.741:12278): arch=x86_64 syscall=kill success=yes exit=0 a0=11e2 a1=0 a2=0 a3=5 items=0 ppid=1 pid=3760 auid=1000 uid=1000 gid=1000 euid=1000 suid=1000 fsuid=1000 egid=1000 sgid=1000 fsgid=1000 tty=(none) ses=11 comm=libvirtd exe=/usr/sbin/libvirtd subj=staff_u:staff_r:staff_t:s0-s0:c0.c1023 key=(null)

Hash: libvirtd,staff_t,svirt_t,process,signull

audit2allow

#============= staff_t ==============
allow staff_t svirt_t:process signull;

audit2allow -R

#============= staff_t ==============
allow staff_t svirt_t:process signull;


Additional info:
hashmarkername: setroubleshoot
kernel:         3.6.0-0.rc1.git6.1.fc18.x86_64
type:           libreport