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Wed, 16 Nov 2022 07:09:12 +0000 From: To: CC: , , , , , , , , Subject: Re: [PATCH net-next] net: microchip: sparx5: prevent uninitialized variable Thread-Topic: [PATCH net-next] net: microchip: sparx5: prevent uninitialized variable Thread-Index: AQHY+PQzbhHUhYYdZEq4sr9nE9jtcq5BJcsA Date: Wed, 16 Nov 2022 07:09:12 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=microchip.com; x-ms-publictraffictype: Email x-ms-traffictypediagnostic: CO6PR11MB5569:EE_|SJ0PR11MB4957:EE_ x-ms-office365-filtering-correlation-id: 09e265f9-51df-42ff-a275-08dac7a17723 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:CO6PR11MB5569.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230022)(7916004)(376002)(39860400002)(136003)(396003)(366004)(346002)(451199015)(41300700001)(478600001)(71200400001)(5660300002)(122000001)(6486002)(66446008)(66476007)(26005)(66556008)(8676002)(186003)(6506007)(66946007)(4326008)(9686003)(91956017)(38100700002)(6512007)(76116006)(33716001)(6916009)(38070700005)(316002)(8936002)(2906002)(83380400001)(64756008)(54906003)(86362001);DIR:OUT;SFP:1101; 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charset="us-ascii" Content-ID: <26C3AF9A862BBD4FB4A651ECA7BD8323@namprd11.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: CO6PR11MB5569.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 09e265f9-51df-42ff-a275-08dac7a17723 X-MS-Exchange-CrossTenant-originalarrivaltime: 16 Nov 2022 07:09:12.8520 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 9vvaiDwwoXFsNapofWyM5midoH0YPr0Wf8S5dkyvRbAnQARdcYvvcfFPOHb/XNKfDJ9YzVJIl5lLiRg5K/rjhCtcjAdNNDDYMYCM0iHr/fI= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR11MB4957 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org > Smatch complains that: >=20 > drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c:112 > sparx5_dcb_apptrust_validate() error: uninitialized symbol 'match'. >=20 > This would only happen if the: >=20 > if (sparx5_dcb_apptrust_policies[i].nselectors !=3D nselectors) >=20 > condition is always true (they are not equal). The "nselectors" > variable comes from dcbnl_ieee_set() and it is a number between 0-256. > This seems like a probably a real bug. That is indeed a bug. Thank you, much appreciated. >=20 > Fixes: 23f8382cd95d ("net: microchip: sparx5: add support for apptrust") > Signed-off-by: Dan Carpenter > --- > drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) >=20 > diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c b/drivers= /net/ethernet/microchip/sparx5/sparx5_dcb.c > index 8108f3767767..74abb946b2a3 100644 > --- a/drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c > +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_dcb.c > @@ -90,7 +90,7 @@ static int sparx5_dcb_app_validate(struct net_device *d= ev, > static int sparx5_dcb_apptrust_validate(struct net_device *dev, u8 *sele= ctors, > int nselectors, int *err) > { > - bool match; > + bool match =3D false; > int i, ii; >=20 > for (i =3D 0; i < ARRAY_SIZE(sparx5_dcb_apptrust_policies); i++) = { > -- > 2.35.1 > Reviewed-by: Daniel Machon =