system tap fails

Issue

• After installing systemtap, seeing errors when attempting to run stap scripts

[root@test tmp]# ./disktop.stp
semantic error: while resolving probe point: identifier 'kernel' at /usr/share/systemtap/tapset/vfs.stp:766:25
        source: probe vfs.read.return = kernel.function("vfs_read").return
                                        ^

semantic error: missing x86_64 kernel/module debuginfo under '/lib/modules/2.6.32-431.3.1.el6.x86_64/build'
semantic error: while resolving probe point: identifier 'vfs' at ./disktop.stp:18:7
        source: probe vfs.read.return {
                      ^

semantic error: no match
semantic error: while resolving probe point: identifier 'kernel' at /usr/share/systemtap/tapset/vfs.stp:834:26
        source: probe vfs.write.return = kernel.function("vfs_write").return
                                         ^

semantic error: while resolving probe point: identifier 'vfs' at ./disktop.stp:28:7
        source: probe vfs.write.return {
                      ^

Pass 2: analysis failed.  Try again with another '--vp 01' option.
Missing separate debuginfos, use: debuginfo-install kernel-2.6.32-431.3.1.el6.x86_64