if (PRINT_FIELD(DSO)) {
                        memset(&alf, 0, sizeof(alf));
                        memset(&alt, 0, sizeof(alt));
-                       thread__find_map(thread, sample->cpumode, from, &alf);
-                       thread__find_map(thread, sample->cpumode, to, &alt);
+                       thread__find_map_fb(thread, sample->cpumode, from, &alf);
+                       thread__find_map_fb(thread, sample->cpumode, to, &alt);
                }
 
                printed += fprintf(fp, " 0x%"PRIx64, from);
                from = br->entries[i].from;
                to   = br->entries[i].to;
 
-               thread__find_symbol(thread, sample->cpumode, from, &alf);
-               thread__find_symbol(thread, sample->cpumode, to, &alt);
+               thread__find_symbol_fb(thread, sample->cpumode, from, &alf);
+               thread__find_symbol_fb(thread, sample->cpumode, to, &alt);
 
                printed += symbol__fprintf_symname_offs(alf.sym, &alf, fp);
                if (PRINT_FIELD(DSO)) {
                from = br->entries[i].from;
                to   = br->entries[i].to;
 
-               if (thread__find_map(thread, sample->cpumode, from, &alf) &&
+               if (thread__find_map_fb(thread, sample->cpumode, from, &alf) &&
                    !alf.map->dso->adjust_symbols)
                        from = map__map_ip(alf.map, from);
 
-               if (thread__find_map(thread, sample->cpumode, to, &alt) &&
+               if (thread__find_map_fb(thread, sample->cpumode, to, &alt) &&
                    !alt.map->dso->adjust_symbols)
                        to = map__map_ip(alt.map, to);
 
 
                pydict_set_item_string_decref(pyelem, "cycles",
                    PyLong_FromUnsignedLongLong(br->entries[i].flags.cycles));
 
-               thread__find_map(thread, sample->cpumode,
-                                br->entries[i].from, &al);
+               thread__find_map_fb(thread, sample->cpumode,
+                                   br->entries[i].from, &al);
                dsoname = get_dsoname(al.map);
                pydict_set_item_string_decref(pyelem, "from_dsoname",
                                              _PyUnicode_FromString(dsoname));
 
-               thread__find_map(thread, sample->cpumode,
-                                br->entries[i].to, &al);
+               thread__find_map_fb(thread, sample->cpumode,
+                                   br->entries[i].to, &al);
                dsoname = get_dsoname(al.map);
                pydict_set_item_string_decref(pyelem, "to_dsoname",
                                              _PyUnicode_FromString(dsoname));
                if (!pyelem)
                        Py_FatalError("couldn't create Python dictionary");
 
-               thread__find_symbol(thread, sample->cpumode,
-                                   br->entries[i].from, &al);
+               thread__find_symbol_fb(thread, sample->cpumode,
+                                      br->entries[i].from, &al);
                get_symoff(al.sym, &al, true, bf, sizeof(bf));
                pydict_set_item_string_decref(pyelem, "from",
                                              _PyUnicode_FromString(bf));
 
-               thread__find_symbol(thread, sample->cpumode,
-                                   br->entries[i].to, &al);
+               thread__find_symbol_fb(thread, sample->cpumode,
+                                      br->entries[i].to, &al);
                get_symoff(al.sym, &al, true, bf, sizeof(bf));
                pydict_set_item_string_decref(pyelem, "to",
                                              _PyUnicode_FromString(bf));