What killed my process?
SystemTap looks like it can't find the debug symbols for your kernel. Have you installed the required kernel debug packages for the kernel you are running? The SystemTap guide says:
To deploy SystemTap, you need to install the SystemTap packages along with the corresponding set of -devel, -debuginfo and -debuginfo-common packages for your kernel. If your system has multiple kernels installed, and you wish to use SystemTap on more than one kernel kernel, you will need to install the -devel and -debuginfo packages for each of those kernel versions.