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Thu, 8 Mar 2018 01:45:51 -0500 Received: from mail-by2nam03on0101.outbound.protection.outlook.com ([104.47.42.101]:17968 "EHLO NAM03-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S965134AbeCHE6Y (ORCPT ); Wed, 7 Mar 2018 23:58:24 -0500 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: "Liu, Changcheng" , Ulf Hansson , Sasha Levin Subject: [PATCH AUTOSEL for 4.14 29/67] mmc: block: fix logical error to avoid memory leak Thread-Topic: [PATCH AUTOSEL for 4.14 29/67] mmc: block: fix logical error to avoid memory leak Thread-Index: AQHTtpn+QIfN8D6xnkS4R0+IqOgxiA== Date: Thu, 8 Mar 2018 04:57:44 +0000 Message-ID: <20180308045641.7814-29-alexander.levin@microsoft.com> References: <20180308045641.7814-1-alexander.levin@microsoft.com> In-Reply-To: <20180308045641.7814-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB0808;7:6ont5woyEFcSRHKdQJ9PG8QKbSq2fMhReOjV+ARb1977JrbO4nnDb3e8FQkhhUIBmbg5jQn65sqiPF6rZyOVLJWi+2TbHso8YftMq3iBYzCE3QODeexkE/yLCs2nKgdlapLbCX10S3AjSP/gkPo2U2tKh/RdR/Pdg1M+ucVVpYNtc4cIFuSF5XcoO/8aaffIS+Wka7BV/v3xM0TMNjc0PMxUY6zxIH5OhUwzh+lYKMEXMSUFZ/eQuMHg7MT1qBVx;20:BXlrtkZRYdqhAbYWX/nfvpm6rxnO9aWQuipvxPFRj6N+3LNuadPrWVO3/3n9QERIiAfKCkORsEjn5cpFKl9A6M5lfcCPk86xkG2ZFbBxF3FxwagxzNn55K3l5DCzAd8E+S2yT65ANtqW7RjvluEXD/LqUY7XgkNlPVvV9CJoCIg= x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: e59d6c8a-0823-4ceb-a207-08d584b13548 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB0808; 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x-microsoft-antispam-message-info: ETP2WxGPytrBhAhyfIN9zfW4M7WXjl4YUiSUk+EgQ2K6E8jZ7rzkiamco69+HnynnQ1+3WCfcdtdq7N45Il0wZbhpUceroCzYIUw00EWyn2Po0PhYqcuwgD2GrdVFzOCxNwuwiexJmaqpKxtXDq+MbSvrbJkADC4dQuTkgOYGETg1Jr7ezIwCsBd5zo1BTNJERVeS39jh2uPpMFB58gSLd1Bgseg16/pqkSGfBeBg6KCnETCei7GsFOS4G5mpdGUNxboDrLoc+YuuatauH9SxLz98AMQ8a80ojN/u8L/P0HKz6uzcb+t/5JjfFy167eOMBNFivSGnexjH9WEScnocg== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: e59d6c8a-0823-4ceb-a207-08d584b13548 X-MS-Exchange-CrossTenant-originalarrivaltime: 08 Mar 2018 04:57:44.2857 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB0808 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: "Liu, Changcheng" [ Upstream commit 0be55579a127916ebe39db2a74d906a2dfceed42 ] If the MMC_DRV_OP_GET_EXT_CSD request completes successfully, then ext_csd must be freed, but in one case it was not. Fix that. Signed-off-by: Liu Changcheng Acked-by: Adrian Hunter Acked-by: Linus Walleij Signed-off-by: Ulf Hansson Signed-off-by: Sasha Levin --- drivers/mmc/core/block.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index ccb516f18d72..9c6f2ce3b710 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -2387,6 +2387,7 @@ static int mmc_ext_csd_open(struct inode *inode, stru= ct file *filp) =20 if (n !=3D EXT_CSD_STR_LEN) { err =3D -EINVAL; + kfree(ext_csd); goto out_free; } =20 --=20 2.14.1