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Sun, 17 May 2020 12:02:59 +0000 Received: from AM0PR0502MB4019.eurprd05.prod.outlook.com ([fe80::b189:d782:4c74:7998]) by AM0PR0502MB4019.eurprd05.prod.outlook.com ([fe80::b189:d782:4c74:7998%7]) with mapi id 15.20.3000.022; Sun, 17 May 2020 12:02:59 +0000 From: Matan Azrad To: Slava Ovsiienko , "dev@dpdk.org" CC: Raslan Darawsheh , "stephen@networkplumber.org" , Alexander Kozyrev , "stable@dpdk.org" Thread-Topic: [PATCH v2] common/mlx5: fix bogus assert Thread-Index: AQHWKb6mXh9ZjZB+aE6JuffabyK5waisMqQw Date: Sun, 17 May 2020 12:02:59 +0000 Message-ID: References: <20200331060247.10954-1-stephen@networkplumber.org> <1589440142-7197-1-git-send-email-viacheslavo@mellanox.com> In-Reply-To: <1589440142-7197-1-git-send-email-viacheslavo@mellanox.com> Accept-Language: en-US, he-IL Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: mellanox.com; dkim=none (message not signed) header.d=none;mellanox.com; dmarc=none action=none header.from=mellanox.com; x-originating-ip: [77.126.88.104] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 3ad42b3b-341d-43af-e56b-08d7fa5a3e79 x-ms-traffictypediagnostic: AM0PR0502MB3634: x-ld-processed: a652971c-7d2e-4d9b-a6a4-d149256f461b,ExtFwd x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:7691; 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DIR:OUT; SFP:1101; x-ms-exchange-antispam-messagedata: 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Mellanox.com X-MS-Exchange-CrossTenant-Network-Message-Id: 3ad42b3b-341d-43af-e56b-08d7fa5a3e79 X-MS-Exchange-CrossTenant-originalarrivaltime: 17 May 2020 12:02:59.7861 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a652971c-7d2e-4d9b-a6a4-d149256f461b X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 6oQUnFBXL/+8YcYkX/087TwQYExTNAyYkp6G+VpBE5nQ481IpvrgTCy7GXBzJ3ZxpWvKEYf96gpRVTtF6OVN0Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR0502MB3634 Subject: Re: [dpdk-stable] [PATCH v2] common/mlx5: fix bogus assert X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Sender: "stable" From: Viacheslav Ovsiienko > The MLX5 device supports up to MLX5_MAX_MAC_ADDRESSES (256) MAC > addresses. > The code flushes all MAC devices. >=20 > If DPDK is compiled with MLX5_DEBUG this would an assert. > PANIC in mlx5_nl_mac_addr_flush(): > line 775 assert "(size_t)(i) < sizeof(mac_own) * 8" failed >=20 > The root cause is that mac_own is a pointer and is being used as a bitmap > array. The sizeof(mac_own) would therefore be 64 but the number of > entries to be flushed would be 256. >=20 > There is a whole set of asserts in MLX5 netlink code with the same bug; t= hat > should just be changed into proper error checks. >=20 > Fixes: 8e46d4e18f09 ("common/mlx5: improve assert control") > Cc: akozyrev@mellanox.com > Cc: stable@dpdk.org >=20 > Signed-off-by: Stephen Hemminger > Signed-off-by: Viacheslav Ovsiienko Acked-by: Matan Azrad