linux-kernel - [for-next][PATCH 2/7] tracing: Fix off-by-one on allocating stat->pages

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Message-Id: <20130419140556.537659608@goodmis.org>
Date:	Fri, 19 Apr 2013 10:04:04 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	linux-kernel@...r.kernel.org
Cc:	Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Namhyung Kim <namhyung.kim@....com>, <stable@...r.kernel.org>,
	Namhyung Kim <namhyung@...nel.org>
Subject: [for-next][PATCH 2/7] tracing: Fix off-by-one on allocating stat->pages

From: Namhyung Kim <namhyung.kim@....com>

The first page was allocated separately, so no need to start from 0.

Link: http://lkml.kernel.org/r/1364820385-32027-2-git-send-email-namhyung@kernel.org

Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Namhyung Kim <namhyung.kim@....com>
Cc: stable@...r.kernel.org
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
---
 kernel/trace/ftrace.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 548a1f7..c9f3149 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -676,7 +676,7 @@ int ftrace_profile_pages_init(struct ftrace_profile_stat *stat)
 
 	pages = DIV_ROUND_UP(functions, PROFILES_PER_PAGE);
 
-	for (i = 0; i < pages; i++) {
+	for (i = 1; i < pages; i++) {
 		pg->next = (void *)get_zeroed_page(GFP_KERNEL);
 		if (!pg->next)
 			goto out_free;
-- 
1.7.10.4



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