Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754961Ab0GASKt (ORCPT ); Thu, 1 Jul 2010 14:10:49 -0400 Received: from kroah.org ([198.145.64.141]:60029 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754840Ab0GASKq (ORCPT ); Thu, 1 Jul 2010 14:10:46 -0400 X-Mailbox-Line: From gregkh@clark.site Thu Jul 1 10:28:57 2010 Message-Id: <20100701172856.967470232@clark.site> User-Agent: quilt/0.48-10.1 Date: Thu, 01 Jul 2010 10:26:55 -0700 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Denis Kirjanov , Robert Richter Subject: [06/23] powerpc/oprofile: fix potential buffer overrun in op_model_cell.c In-Reply-To: <20100701175134.GA2098@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1164 Lines: 37 2.6.27-stable review patch. If anyone has any objections, please let us know. ------------------ From: Denis Kirjanov 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 Signed-off-by: Robert Richter Signed-off-by: Greg Kroah-Hartman --- 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 @@ -821,7 +821,7 @@ 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]; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/