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Wed, 26 May 2021 14:52:44 +0000 From: "Kumar, Ruban" To: "users@dpdk.org" Thread-Topic: Memzone corruption Issue Thread-Index: AddSO9Y73vFGuTtlQ0mZEdZsXtYl6g== Date: Wed, 26 May 2021 14:52:43 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dpdk.org; dkim=none (message not signed) header.d=none;dpdk.org; dmarc=none action=none header.from=hughes.com; x-originating-ip: [163.116.146.116] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 1cff5ce2-4859-4d3f-93ce-08d92055eb3d x-ms-traffictypediagnostic: BL0PR11MB3474: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:9508; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.29 Subject: [dpdk-users] Memzone corruption Issue X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: users-bounces@dpdk.org Sender: "users" Hi, I have a sample_dpdk_app program which uses memzone as shared memory betwee= n the Lcores. The program was developed and tested using DPDK 19.02 , and t= he code works as expected. On compiling the same sample_dpdk_app with DPDK = 20.08 , we notice the following issues, 1. The memzone used as shared memory seems to be corrupted. Primary writ= es a structure into the memzone and when secondary reads the structure, I s= ee that some of the structure members are corrupted. 2. During compilation we see this warning /opt/dpdk/dpdk-20.08/x86_64-n= ative-linuxapp-icc/include/generic/rte_rwlock.h(142): warning #68: integer = conversion resulted in a change of sign if (x !=3D 0 || __atomic_compare_exchange_n(&rwl->cnt, &x, -1, 1, ^ I am not sure if the above mentioned issues are related, Any help will be g= reatly appreciated !! --- Primary lcore creates the memzone as shown below const struct rte_memzone* zone =3D rte_memzone_reserve("testzone", 64*numFl= ows, rte_socket_id(), RTE_MEMZONE_2MB); Secondary lcore does a lookup of the memzone as shown below const struct rte_memzone* zone =3D rte_memzone_lookup("testzone"); Thanks & Regards, Ruban