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Fri, 7 Jan 2022 07:17:39 +0000 Date: Fri, 7 Jan 2022 10:17:27 +0300 From: Dan Carpenter To: Marcel Holtmann , Luiz Augusto von Dentz Cc: hch@lst.de, Johan Hedberg , Luiz Augusto von Dentz , linux-bluetooth@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH] Bluetooth: hci_sock: fix endian bug in hci_sock_setsockopt() Message-ID: <20220107071727.GD22086@kili> Content-Disposition: inline X-Mailer: git-send-email haha only kidding User-Agent: Mutt/1.10.1 (2018-07-13) X-ClientProxiedBy: ZR0P278CA0172.CHEP278.PROD.OUTLOOK.COM (2603:10a6:910:45::6) To MWHPR1001MB2365.namprd10.prod.outlook.com (2603:10b6:301:2d::28) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: f05fe8b3-045d-4f69-b5a6-08d9d1adc98a X-MS-TrafficTypeDiagnostic: CO6PR10MB5554:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6108; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MWHPR1001MB2365.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(7916004)(366004)(52116002)(186003)(508600001)(26005)(9686003)(66476007)(66946007)(33716001)(6506007)(5660300002)(6666004)(4326008)(38100700002)(110136005)(54906003)(38350700002)(6486002)(66556008)(316002)(1076003)(8936002)(83380400001)(33656002)(86362001)(2906002)(8676002)(44832011)(6512007);DIR:OUT;SFP:1101; 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Fixes: 09572fca7223 ("Bluetooth: hci_sock: Add support for BT_{SND,RCV}BUF") Signed-off-by: Dan Carpenter --- net/bluetooth/hci_sock.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c index 446573a12571..33b3c0ffc339 100644 --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -1911,7 +1911,8 @@ static int hci_sock_setsockopt(struct socket *sock, int level, int optname, sockptr_t optval, unsigned int len) { struct sock *sk = sock->sk; - int err = 0, opt = 0; + int err = 0; + u16 opt; BT_DBG("sk %p, opt %d", sk, optname); @@ -1937,7 +1938,7 @@ static int hci_sock_setsockopt(struct socket *sock, int level, int optname, goto done; } - if (copy_from_sockptr(&opt, optval, sizeof(u16))) { + if (copy_from_sockptr(&opt, optval, sizeof(opt))) { err = -EFAULT; break; }