SELinux is preventing /bin/mount from 'getattr' accesses on the lnk_file /etc/mtab.

*****  Plugin restorecon (99.5 confidence) suggests  *************************

If you want to fix the label. 
/etc/mtab default label should be etc_t.
Then you can run restorecon.
Do
# /sbin/restorecon -v /etc/mtab

*****  Plugin catchall (1.49 confidence) suggests  ***************************

If you believe that mount should be allowed getattr access on the mtab lnk_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:
# grep mount /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:mount_t:s0-s0:c0.c1023
Target Context                system_u:object_r:etc_runtime_t:s0
Target Objects                /etc/mtab [ lnk_file ]
Source                        mount
Source Path                   /bin/mount
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           util-linux-2.19-0.4.fc15
Target RPM Packages           util-linux-2.19-0.4.fc15
Policy RPM                    selinux-policy-3.9.13-9.fc15
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed)
                              2.6.38-0.rc4.git0.1.fc15.x86_64 #1 SMP Tue Feb 8
                              01:57:21 UTC 2011 x86_64 x86_64
Alert Count                   2
First Seen                    Wed 09 Feb 2011 04:16:56 PM CST
Last Seen                     Wed 09 Feb 2011 04:21:43 PM CST
Local ID                      c934237d-5e32-47c5-a1bb-d2cb3fbcaef3

Raw Audit Messages
type=AVC msg=audit(1297290103.440:88): avc:  denied  { getattr } for  pid=1664 comm="mount" path="/etc/mtab" dev=dm-1 ino=524305 scontext=system_u:system_r:mount_t:s0-s0:c0.c1023 tcontext=system_u:object_r:etc_runtime_t:s0 tclass=lnk_file


type=SYSCALL msg=audit(1297290103.440:88): arch=x86_64 syscall=lstat success=no exit=EACCES a0=7f958ccb5587 a1=7fff52d67260 a2=7fff52d67260 a3=7fff52d66fd0 items=0 ppid=1663 pid=1664 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=mount exe=/bin/mount subj=system_u:system_r:mount_t:s0-s0:c0.c1023 key=(null)

Hash: mount,mount_t,etc_runtime_t,lnk_file,getattr

audit2allow

#============= mount_t ==============
allow mount_t etc_runtime_t:lnk_file getattr;

audit2allow -R

#============= mount_t ==============
allow mount_t etc_runtime_t:lnk_file getattr;