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Wed, 10 Jul 2019 00:09:23 +0000 From: "Hook, Gary" To: "linux-crypto@vger.kernel.org" CC: "herbert@gondor.apana.org.au" , "davem@davemloft.net" , "Lendacky, Thomas" , "Hook, Gary" Subject: [PATCH v2] crypto: ccp - memset structure fields to zero before reuse Thread-Topic: [PATCH v2] crypto: ccp - memset structure fields to zero before reuse Thread-Index: AQHVNrO6m+NQJFdJik6RYa0T/lhkoA== Date: Wed, 10 Jul 2019 00:09:22 +0000 Message-ID: <20190710000849.3131-1-gary.hook@amd.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: SN1PR12CA0080.namprd12.prod.outlook.com (2603:10b6:802:21::15) To DM5PR12MB1449.namprd12.prod.outlook.com (2603:10b6:4:10::14) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Gary.Hook@amd.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.17.1 x-originating-ip: [165.204.78.2] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 56647ff3-4a2c-444f-a05a-08d704cadc7b x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600148)(711020)(4605104)(1401327)(4618075)(2017052603328)(7193020);SRVR:DM5PR12MB1402; 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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 56647ff3-4a2c-444f-a05a-08d704cadc7b X-MS-Exchange-CrossTenant-originalarrivaltime: 10 Jul 2019 00:09:22.8201 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: ghook@amd.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR12MB1402 Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org The AES GCM function reuses an 'op' data structure, which members contain values that must be cleared for each (re)use. This fix resolves a crypto self-test failure: alg: aead: gcm-aes-ccp encryption test failed (wrong result) on test vector= 2, cfg=3D"two even aligned splits" Fixes: 36cf515b9bbe ("crypto: ccp - Enable support for AES GCM on v5 CCPs") Signed-off-by: Gary R Hook --- Changes since v1: - Explain in the commit message that this fix resolves a failed test drivers/crypto/ccp/ccp-ops.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/ccp/ccp-ops.c b/drivers/crypto/ccp/ccp-ops.c index a817f2755c58..9ecc1bb4b237 100644 --- a/drivers/crypto/ccp/ccp-ops.c +++ b/drivers/crypto/ccp/ccp-ops.c @@ -622,6 +622,7 @@ static int ccp_run_aes_gcm_cmd(struct ccp_cmd_queue *cm= d_q, =20 unsigned long long *final; unsigned int dm_offset; + unsigned int jobid; unsigned int ilen; bool in_place =3D true; /* Default value */ int ret; @@ -660,9 +661,11 @@ static int ccp_run_aes_gcm_cmd(struct ccp_cmd_queue *c= md_q, p_tag =3D scatterwalk_ffwd(sg_tag, p_inp, ilen); } =20 + jobid =3D CCP_NEW_JOBID(cmd_q->ccp); + memset(&op, 0, sizeof(op)); op.cmd_q =3D cmd_q; - op.jobid =3D CCP_NEW_JOBID(cmd_q->ccp); + op.jobid =3D jobid; op.sb_key =3D cmd_q->sb_key; /* Pre-allocated */ op.sb_ctx =3D cmd_q->sb_ctx; /* Pre-allocated */ op.init =3D 1; @@ -813,6 +816,13 @@ static int ccp_run_aes_gcm_cmd(struct ccp_cmd_queue *c= md_q, final[0] =3D cpu_to_be64(aes->aad_len * 8); final[1] =3D cpu_to_be64(ilen * 8); =20 + memset(&op, 0, sizeof(op)); + op.cmd_q =3D cmd_q; + op.jobid =3D jobid; + op.sb_key =3D cmd_q->sb_key; /* Pre-allocated */ + op.sb_ctx =3D cmd_q->sb_ctx; /* Pre-allocated */ + op.init =3D 1; + op.u.aes.type =3D aes->type; op.u.aes.mode =3D CCP_AES_MODE_GHASH; op.u.aes.action =3D CCP_AES_GHASHFINAL; op.src.type =3D CCP_MEMTYPE_SYSTEM; --=20 2.17.1