The impending merge of pr4225 broke symbol-table-only probing. That code needs some more tweaks to clarify the roles of the module_cache, func_info, symtab auxiliary structures.
dsmith's recent dwarfless kprobe work does this. We can still clean up old/unused options like --ignore-vmlinux etc. sometime. *** This bug has been marked as a duplicate of bug 11424 ***