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Fri, 01 Feb 2019 08:30:26 +0000 Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by userv0021.oracle.com (8.14.4/8.14.4) with ESMTP id x118UKsq017133 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 1 Feb 2019 08:30:20 GMT Received: from abhmp0015.oracle.com (abhmp0015.oracle.com [141.146.116.21]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id x118UJEA015750; Fri, 1 Feb 2019 08:30:19 GMT Received: from kadam (/197.157.0.29) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 01 Feb 2019 00:30:18 -0800 Date: Fri, 1 Feb 2019 11:30:09 +0300 From: Dan Carpenter To: Liang Yang Subject: [PATCH 2/3] mtd: rawnand: meson: fix a loop in meson_nand_bch_mode() Message-ID: <20190201083009.GD8459@kadam> MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email haha only kidding User-Agent: Mutt/1.9.4 (2018-02-28) X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9153 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=676 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1902010064 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190201_003038_021302_82C5274D X-CRM114-Status: GOOD ( 18.09 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Boris Brezillon , Richard Weinberger , kernel-janitors@vger.kernel.org, Marek Vasut , linux-mtd@lists.infradead.org, Kevin Hilman , Miquel Raynal , linux-amlogic@lists.infradead.org, Brian Norris , David Woodhouse Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+patchwork-linux-amlogic=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP There is a sizeof() vs ARRAY_SIZE() bug here. We want the number of elements in the array, not the number of bytes. It means we potentially read beyond the end of the array. Fixes: 2d570b34b41a ("mtd: rawnand: meson: add support for Amlogic NAND flash controller") Signed-off-by: Dan Carpenter Acked-by: Liang Yang --- drivers/mtd/nand/raw/meson_nand.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c index 94c90be7e1e0..0d93d0b9c1af 100644 --- a/drivers/mtd/nand/raw/meson_nand.c +++ b/drivers/mtd/nand/raw/meson_nand.c @@ -1143,7 +1143,7 @@ static int meson_nand_bch_mode(struct nand_chip *nand) if (nand->ecc.strength > 60 || nand->ecc.strength < 8) return -EINVAL; - for (i = 0; i < sizeof(meson_ecc); i++) { + for (i = 0; i < ARRAY_SIZE(meson_ecc); i++) { if (meson_ecc[i].strength == nand->ecc.strength) { meson_chip->bch_mode = meson_ecc[i].bch; return 0;