1 files changed, 3 insertions, 0 deletions

diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 16da30d8d765..076c9d4e1ea4 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -33,6 +33,9 @@ static int repsep_snprintf(char *bf, size_t size, const char *fmt, ...)
                 }
         }
         va_end(ap);
+
+        if (n >= (int)size)
+                return size - 1;
         return n;
 }