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Mon, 11 May 2020 13:58:58 +0000 Received: from AM0PR05MB6707.eurprd05.prod.outlook.com ([fe80::508:747b:cc12:5f6e]) by AM0PR05MB6707.eurprd05.prod.outlook.com ([fe80::508:747b:cc12:5f6e%5]) with mapi id 15.20.2979.033; Mon, 11 May 2020 13:58:58 +0000 From: Raslan Darawsheh To: Alexander Kozyrev , "dev@dpdk.org" CC: "stable@dpdk.org" , Slava Ovsiienko , Matan Azrad Thread-Topic: [PATCH] net/mlx5: fix TxQ release debug log timing Thread-Index: AQHWI9G65X7CAaNJfkGMXTqCGw19Zaii8OUQ Date: Mon, 11 May 2020 13:58:58 +0000 Message-ID: References: <1588788659-25462-1-git-send-email-akozyrev@mellanox.com> In-Reply-To: <1588788659-25462-1-git-send-email-akozyrev@mellanox.com> Accept-Language: en-US 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: [188.161.229.217] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 106ed106-b62c-4c20-7bb7-08d7f5b37387 x-ms-traffictypediagnostic: AM0PR05MB5857:|AM0PR05MB5857: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:4941; 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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: 106ed106-b62c-4c20-7bb7-08d7f5b37387 X-MS-Exchange-CrossTenant-originalarrivaltime: 11 May 2020 13:58:58.0960 (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: Z556bEXw3RBr8N+XPpqqOkiJGTuwwQYOnxLi/ySSsHS+quVs/AvaiEU9ZY93pPML+ChJ+E9pwGrF71Gyd3AIvw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR05MB5857 Subject: Re: [dpdk-stable] [PATCH] net/mlx5: fix TxQ release debug log timing 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" Hi, > -----Original Message----- > From: Alexander Kozyrev > Sent: Wednesday, May 6, 2020 9:11 PM > To: dev@dpdk.org > Cc: stable@dpdk.org; Raslan Darawsheh ; Slava > Ovsiienko ; Matan Azrad > > Subject: [PATCH] net/mlx5: fix TxQ release debug log timing >=20 > Program received signal SIGSEGV, Segmentation fault. > 0x00000000008ef7c4 in mlx5_tx_queue_release (dpdk_txq=3D0x17ce01680) at > drivers/net/mlx5/mlx5_txq.c:302 > 301 mlx5_txq_release(ETH_DEV(priv), i); > 302 DRV_LOG(DEBUG, "port %u removing Tx queue %u from list", > 303 PORT_ID(priv), txq->idx); > The problem is txq is freed inside the mlx5_txq_release() function > and no longer valid in the debug log right after this invocation. > Move the debug log before the mlx5_txq_release() function to fix this. >=20 > Fixes: a6d83b6a92 ("net/mlx5: standardize on negative errno values") > Cc: stable@dpdk.org >=20 > Signed-off-by: Alexander Kozyrev > Acked-by: Matan Azrad > --- > drivers/net/mlx5/mlx5_txq.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) >=20 > diff --git a/drivers/net/mlx5/mlx5_txq.c b/drivers/net/mlx5/mlx5_txq.c > index 29e5cab..a211fa9 100644 > --- a/drivers/net/mlx5/mlx5_txq.c > +++ b/drivers/net/mlx5/mlx5_txq.c > @@ -298,9 +298,9 @@ > priv =3D txq_ctrl->priv; > for (i =3D 0; (i !=3D priv->txqs_n); ++i) > if ((*priv->txqs)[i] =3D=3D txq) { > - mlx5_txq_release(ETH_DEV(priv), i); > DRV_LOG(DEBUG, "port %u removing Tx queue %u > from list", > PORT_ID(priv), txq->idx); > + mlx5_txq_release(ETH_DEV(priv), i); > break; > } > } > -- > 1.8.3.1 Patch applied to next-net-mlx, Kindest regards, Raslan Darawsheh