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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: cfde5dbf-c31b-44b7-4549-08d7f71b41db X-MS-Exchange-CrossTenant-originalarrivaltime: 13 May 2020 08:54:33.6831 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: QkHcep0dIT3YBSarUMhfkA1GWz2Lydkpu7gm68meMr12j2oZzF2mzol4Pzr4mGSk1FMucpS5huWxN7YVB1FSAxAjBlwL3UgwH9NBXTB6494= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR11MB3691 X-OriginatorOrg: intel.com Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH v4] app/testpmd: fix DCB set failure 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 Ting, > -----Original Message----- > From: dev On Behalf Of Ting Xu > Sent: Wednesday, May 13, 2020 11:08 AM > To: dev@dpdk.org > Cc: thomas@monjalon.net; Yigit, Ferruh ; > arybchenko@solarflare.com; stable@dpdk.org > Subject: [dpdk-dev] [PATCH v4] app/testpmd: fix DCB set failure The fix is no longer in testpmd, so the commit line should be "ethdev: fix = DCB set failure". =20 > When set DCB in testpmd, there is a segmentation fault. It is because the > local variable rss_conf in get_eth_dcb_conf() is not cleared, so that the > pointer member variable rss_key has a random address, which leads to an > error in the following processing. This patch initialized the local varia= ble > rss_conf to avoid this situation. The commit message should probably be revised. >=20 > Fixes: ac7c491c3fec ("app/testpmd: fix DCB config") Also the Fixes line may need to change. > Cc: stable@dpdk.org >=20 > Signed-off-by: Ting Xu >=20 > --- > V3->v4: fix build failure > v2->v3: move memset to rte_eth_dev_rss_hash_conf_get from testpmd > v1->v2: modify commit log, move memset to else leg > --- > lib/librte_ethdev/rte_ethdev.c | 2 ++ > 1 file changed, 2 insertions(+) >=20 > diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethde= v.c > index 8e10a6fc3..1f6ca742a 100644 > --- a/lib/librte_ethdev/rte_ethdev.c > +++ b/lib/librte_ethdev/rte_ethdev.c > @@ -3549,6 +3549,8 @@ rte_eth_dev_rss_hash_conf_get(uint16_t port_id, > { > struct rte_eth_dev *dev; >=20 > + memset(rss_conf, 0, sizeof(*rss_conf)); The memset call should be moved to after the error checks to just before th= e function is called. > + > RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV); > dev =3D &rte_eth_devices[port_id]; > RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rss_hash_conf_get, > -ENOTSUP); > -- > 2.17.1 Regards, Bernard.