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a=rsa-sha256; c=relaxed/relaxed; d=wavesemi.onmicrosoft.com; s=selector1-wavecomp-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=qsq0P9bLQNdDYF+3M/FnOd1fBxzsULhkiUUMcNzuRU0=; b=h88E6O+x+cMZHNV8goMMErAddbIycJ+Q3EGgwI49IZUMELi2TLNImEP/Ub4ydPGE/HtOeeJQA6PCxByqqZSBbema7DLSTNHY/WUGr1eOt2oDuq11YgJwTJVzWjg5UQYXMCgT2xGGCmE9AjLIbRKNgUzE/TarnszVJ+bIe3c+yT8= Received: from CY4PR2201MB1272.namprd22.prod.outlook.com (10.171.214.23) by CY4PR2201MB1398.namprd22.prod.outlook.com (10.171.210.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1750.17; Thu, 28 Mar 2019 18:37:56 +0000 Received: from CY4PR2201MB1272.namprd22.prod.outlook.com ([fe80::3814:18cc:d558:6039]) by CY4PR2201MB1272.namprd22.prod.outlook.com ([fe80::3814:18cc:d558:6039%11]) with mapi id 15.20.1730.019; Thu, 28 Mar 2019 18:37:56 +0000 From: Paul Burton To: Thomas Bogendoerfer CC: Ralf Baechle , Paul Burton , James Hogan , "linux-mips@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Dan Carpenter , "linux-mips@vger.kernel.org" Subject: Re: [PATCH] MIPS: SGI-IP27: Fix use of unchecked pointer in shutdown_bridge_irq Thread-Topic: [PATCH] MIPS: SGI-IP27: Fix use of unchecked pointer in shutdown_bridge_irq Thread-Index: AQHU5ZVcQXmZ6dVAt0GJm/JFIR16Vw== Date: Thu, 28 Mar 2019 18:37:56 +0000 Message-ID: References: <20190328133745.26506-1-tbogendoerfer@suse.de> In-Reply-To: <20190328133745.26506-1-tbogendoerfer@suse.de> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: BYAPR03CA0022.namprd03.prod.outlook.com (2603:10b6:a02:a8::35) To CY4PR2201MB1272.namprd22.prod.outlook.com (2603:10b6:910:6e::23) authentication-results: spf=none (sender IP is ) smtp.mailfrom=pburton@wavecomp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [2601:647:4100:4687:76db:7cfe:65a3:6aea] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: f3fb1db1-e63c-4f00-5ea1-08d6b3ac7e83 x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600127)(711020)(4605104)(2017052603328)(7153060)(7193020);SRVR:CY4PR2201MB1398; x-ms-traffictypediagnostic: CY4PR2201MB1398: x-microsoft-antispam-prvs: x-forefront-prvs: 0990C54589 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(396003)(376002)(136003)(346002)(366004)(39840400004)(199004)(189003)(33656002)(6246003)(11346002)(46003)(102836004)(4326008)(446003)(386003)(6506007)(186003)(256004)(105586002)(53936002)(106356001)(42882007)(4744005)(9686003)(81166006)(81156014)(316002)(76176011)(68736007)(97736004)(54906003)(8676002)(55016002)(44832011)(229853002)(7696005)(71190400001)(99286004)(71200400001)(52116002)(8936002)(14454004)(6116002)(478600001)(7736002)(5660300002)(52536014)(74316002)(25786009)(476003)(6436002)(2906002)(486006)(305945005)(6916009);DIR:OUT;SFP:1102;SCL:1;SRVR:CY4PR2201MB1398;H:CY4PR2201MB1272.namprd22.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: wavecomp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: qucgHavAAvnxg3t5/7tp6wSqgfabHVaMPT82lIrmkfSPEn38NU8EDmwn5gEY/OUgMUwUaYVlXB/fZR5uBVcQB4X/Y06/waGrlwD5K4U5+0sTJ1I7g0VNAw+eV9p8mNgBnsWUW9zM9DYuEKfhB+9XUZOddXzCoJklAoAQfJrLlP8VkYv0B20KUZZyb/sD3RUPPcC+FH8oeEkgToqdKbzxDmqm9/wtwXVzkIPa91Hh+gtSoKbbOhZz0lD08wU0tpcO+E8+01NRgAZozSHKTmk95DH7I6v5rkU5plc234lCMgS//LbBzAwMcIcoYxliTZCGM9ZdUnq7CVF6z8A40HBORHjHq/eDuo1sBOK1ZpiCcp08sCuQ9VUEK1tUqGfXN5nt+r0sHarPdkIHud7czF17Sa76ddHTxdURV1wT7mZPFsg= Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: mips.com X-MS-Exchange-CrossTenant-Network-Message-Id: f3fb1db1-e63c-4f00-5ea1-08d6b3ac7e83 X-MS-Exchange-CrossTenant-originalarrivaltime: 28 Mar 2019 18:37:56.0521 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 463607d3-1db3-40a0-8a29-970c56230104 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR2201MB1398 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, Thomas Bogendoerfer wrote: > smatch complaint: >=20 > arch/mips/sgi-ip27/ip27-irq.c:123 shutdown_bridge_irq() > warn: variable dereferenced before check 'hd' (see line 121) >=20 > Fix it by removing local variable and use hd->pin directly. >=20 > Fixes: 69a07a41d908 ("MIPS: SGI-IP27: rework HUB interrupts") > Reported-by: Dan Carpenter > Signed-off-by: Thomas Bogendoerfer > Reviewed-by: Mukesh Ojha Applied to mips-fixes. Thanks, Paul [ This message was auto-generated; if you believe anything is incorrect then please email paul.burton@mips.com to report it. ]