Description of problem:
In RHEL6.5-20130925.2 run "su $user -c cmd" return 132 (SIGILL)
run in RHEL6.4 it's OK.

Version-Release number of selected component (if applicable):
=> rel-eng/RHEL6.5-20130925.2 -> {http://download.devel.redhat.com/rel-eng/RHEL6.5-20130925.2/6.5/Server/x86_64/os/Packages}
coreutils-8.4-28.el6.x86_64.rpm
coreutils-libs-8.4-28.el6.x86_64.rpm
policycoreutils-2.0.83-19.37.el6.x86_64.rpm
policycoreutils-gui-2.0.83-19.37.el6.x86_64.rpm
policycoreutils-newrole-2.0.83-19.37.el6.x86_64.rpm
policycoreutils-python-2.0.83-19.37.el6.x86_64.rpm
policycoreutils-sandbox-2.0.83-19.37.el6.x86_64.rpm
kernel-2.6.32-420.el6.x86_64.rpm

How reproducible:
100% in special case

Steps to Reproduce:
1. run beaker test case /CoreOS/nfs-utils/initscript:
   bkr workflow-simple --task=/CoreOS/nfs-utils/initscript --distro=RHEL6.5-20130925.2 --whiteboard " xxx " 
2.
3.

Actual results:
{19:33:02 root@ /tmp/tmp.4mKUAJBBfe}# su testuserqa -c 'service nfs stop'
:: [   FAIL   ] :: Insufficient rights, stopping service under nonprivileged user must fail (Expected 4, got 132)   <<<---SIGILL

Expected results:
{19:41:07 root@ /tmp/tmp.70g7YRW5uE}# su testuserqa -c 'service nfs stop'
:: [   PASS   ] :: Insufficient rights, stopping service under nonprivileged user must fail (Expected 4, got 4)

Additional info:
  run in RHEL6.4 is OK;