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Message-Id: <20100701173431.967345338@clark.site>
Date: Thu, 01 Jul 2010 10:34:07 -0700
From: Greg KH <gregkh@...e.de>
To: linux-kernel@...r.kernel.org, stable@...nel.org
Cc: stable-review@...nel.org, torvalds@...ux-foundation.org,
akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
Denis Kirjanov <dkirjanov@...nel.org>,
Robert Richter <robert.richter@....com>
Subject: [patch 061/164] powerpc/oprofile: fix potential buffer overrun in op_model_cell.c
2.6.33-stable review patch. If anyone has any objections, please let me know.
------------------
From: Denis Kirjanov <dkirjanov@...a.kernel.org>
commit 238c1a78c957f3dc7cb848b161dcf4805793ed56 upstream.
Fix potential initial_lfsr buffer overrun.
Writing past the end of the buffer could happen when index == ENTRIES
Signed-off-by: Denis Kirjanov <dkirjanov@...nel.org>
Signed-off-by: Robert Richter <robert.richter@....com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
arch/powerpc/oprofile/op_model_cell.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/powerpc/oprofile/op_model_cell.c
+++ b/arch/powerpc/oprofile/op_model_cell.c
@@ -1077,7 +1077,7 @@ static int calculate_lfsr(int n)
index = ENTRIES-1;
/* make sure index is valid */
- if ((index > ENTRIES) || (index < 0))
+ if ((index >= ENTRIES) || (index < 0))
index = ENTRIES-1;
return initial_lfsr[index];
--
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