From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755276AbdLGQ4p (ORCPT ); Thu, 7 Dec 2017 11:56:45 -0500 Received: from fldsmtpe03.verizon.com ([140.108.26.142]:61687 "EHLO fldsmtpe03.verizon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932384AbdLGPxQ (ORCPT ); Thu, 7 Dec 2017 10:53:16 -0500 From: alexander.levin@verizon.com Cc: weiping zhang , "Martin K . Petersen" , alexander.levin@verizon.com X-Host: mariner.tdc.vzwcorp.com To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" Subject: [PATCH AUTOSEL for 4.9 148/156] scsi: sd: change manage_start_stop to bool in sysfs interface Thread-Topic: [PATCH AUTOSEL for 4.9 148/156] scsi: sd: change manage_start_stop to bool in sysfs interface Thread-Index: AQHTb3L5EfbCyAYpSkKL4HFkccx8xA== Date: Thu, 7 Dec 2017 15:49:33 +0000 Message-ID: <20171207154845.4814-148-alexander.levin@verizon.com> References: <20171207154845.4814-1-alexander.levin@verizon.com> In-Reply-To: <20171207154845.4814-1-alexander.levin@verizon.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.144.60.250] Content-Type: text/plain; charset="iso-8859-1" MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by nfs id vB7Gvk9N019978 From: weiping zhang [ Upstream commit 623401ee33e42cee64d333877892be8db02951eb ] /sys/class/scsi_disk/0:2:0:0/manage_start_stop can be changed to 0 unexpectly by writing an invalid string. Signed-off-by: weiping zhang Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/sd.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 09fa1fd0c4ce..66e1c2ea79d7 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -234,11 +234,15 @@ manage_start_stop_store(struct device *dev, struct device_attribute *attr, { struct scsi_disk *sdkp = to_scsi_disk(dev); struct scsi_device *sdp = sdkp->device; + bool v; if (!capable(CAP_SYS_ADMIN)) return -EACCES; - sdp->manage_start_stop = simple_strtoul(buf, NULL, 10); + if (kstrtobool(buf, &v)) + return -EINVAL; + + sdp->manage_start_stop = v; return count; } -- 2.11.0