by N8Fear » Tue Sep 17, 2013 11:07 am
As of now the latest grsecurity patch for 2.6.32 is 2.9.1-2.6.32.61. You could either try to apply that to the kernel sources from your distribution (CentOS I presume) or take a vanilla 2.6.32.61 source tree (e.g. from kernel.org) and patch that (which should definitely work).
Your distribution kernel may have patches that result in conflicts when trying to apply the patch.