linux-kernel - [patch] perf: off by one in perf_swevent

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Date:	Sun, 24 Oct 2010 21:50:42 +0200
From:	Dan Carpenter <error27@...il.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Stephane Eranian <eranian@...gle.com>,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [patch] perf: off by one in perf_swevent_init()

The perf_swevent_enabled[] array has PERF_COUNT_SW_MAX elements.

Signed-off-by: Dan Carpenter <error27@...il.com>

diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index f309e80..c45396d 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -4687,7 +4687,7 @@ static int perf_swevent_init(struct perf_event *event)
 		break;
 	}
 
-	if (event_id > PERF_COUNT_SW_MAX)
+	if (event_id >= PERF_COUNT_SW_MAX)
 		return -ENOENT;
 
 	if (!event->parent) {
--
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