perf_counter tools: Fix index boundary check

Keep index within event_type_descriptors[]

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <4A5A7F0B.4070106@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 518a33a..d18c98e 100644 (file)
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -436,7 +436,7 @@ void print_events(void)
 
        for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
                type = syms->type + 1;
-               if (type > ARRAY_SIZE(event_type_descriptors))
+               if (type >= ARRAY_SIZE(event_type_descriptors))
                        type = 0;
 
                if (type != prev_type)