diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index d188b7588152dd737357c063ca754a1a9dfa8596..0715f972a275c56a7f6091da5eddd16c9da13275 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -709,6 +709,8 @@ static int map_groups__split_kallsyms_for_kcore(struct map_groups *kmaps, struct
 		}
 
 		pos->start -= curr_map->start - curr_map->pgoff;
+		if (pos->end > curr_map->end)
+			pos->end = curr_map->end;
 		if (pos->end)
 			pos->end -= curr_map->start - curr_map->pgoff;
 		symbols__insert(&curr_map->dso->symbols, pos);