Description of problem: kernel-rt-3.0.36-rt57.66 and most likely the kernel-rt-3.2 series as well have debuginfo packages which does not provide enough information for systemtap to function. The same systemtap script on RHEL6 kernel-2.6.32-220 runs without any problems with the same systemtap script. Actual results: [root@host ~]# stap --vp 01 graphs.stp semantic error: missing x86_64 kernel/module debuginfo under '/lib/modules/3.0.36-rt57.66.el6rt.x86_64/build' while resolving probe point kernel.function("generic_make_request") semantic error: no match while resolving probe point ioblock.request semantic error: missing x86_64 kernel/module debuginfo under '/lib/modules/3.0.36-rt57.66.el6rt.x86_64/build' while resolving probe point kernel.function("bio_endio") semantic error: no match while resolving probe point ioblock.end semantic error: no match while resolving probe point scheduler.cpu_on Pass 2: analyzed script: 6 probe(s), 22 function(s), 1 embed(s), 13 global(s) using 202684virt/29328res/5340shr kb, in 80usr/340sys/442real ms. Pass 2: analysis failed. Try again with another '--vp 01' option. Missing separate debuginfos, use: debuginfo-install kernel-rt-3.0.36-rt57.66.el6rt.x86_64 [root@host ~]# Expected results: A running systemtap script Additional info: The following example script have been used for testing this bz http://sources.redhat.com/systemtap/examples/general/graphs.stp
It turned out I had managed to get a mixture of kernel-rt packages with different versions installed. kernel-rt-devel-3.0.36-rt57.66.el6rt.x86_64 kernel-rt-3.0.36-rt57.66.el6rt.x86_64 kernel-rt-debuginfo-common-x86_64-3.0.36-rt58.67.el6rt.x86_64 kernel-rt-debuginfo-3.0.36-rt58.67.el6rt.x86_64 both rt57.66 kernel packages and rt58.67 debuginfo packages. Fixing this solved the issue.