From patchwork Mon Sep 9 13:24:27 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bernard Metzler X-Patchwork-Id: 11137941 X-Patchwork-Delegate: jgg@ziepe.ca Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6BDFE1599 for ; Mon, 9 Sep 2019 13:24:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 52BCF21920 for ; Mon, 9 Sep 2019 13:24:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730238AbfIINYk (ORCPT ); Mon, 9 Sep 2019 09:24:40 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:13812 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729859AbfIINYk (ORCPT ); Mon, 9 Sep 2019 09:24:40 -0400 Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x89DOKmV018052 for ; Mon, 9 Sep 2019 09:24:39 -0400 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0a-001b2d01.pphosted.com with ESMTP id 2uwqk5r0fy-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 09 Sep 2019 09:24:39 -0400 Received: from localhost by e06smtp01.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 9 Sep 2019 14:24:37 +0100 Received: from b06cxnps3074.portsmouth.uk.ibm.com (9.149.109.194) by e06smtp01.uk.ibm.com (192.168.101.131) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 9 Sep 2019 14:24:34 +0100 Received: from d06av26.portsmouth.uk.ibm.com (d06av26.portsmouth.uk.ibm.com [9.149.105.62]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x89DOXpN56492188 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 9 Sep 2019 13:24:33 GMT Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9C3BBAE045; Mon, 9 Sep 2019 13:24:33 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6999CAE057; Mon, 9 Sep 2019 13:24:33 +0000 (GMT) Received: from spoke.zurich.ibm.com (unknown [9.4.69.152]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 9 Sep 2019 13:24:33 +0000 (GMT) From: Bernard Metzler To: linux-rdma@vger.kernel.org Cc: krishna2@chelsio.com, dledford@redhat.com, Bernard Metzler Subject: [PATCH v1 for-rc] RDMA/siw: Fix page address mapping in TX path Date: Mon, 9 Sep 2019 15:24:27 +0200 X-Mailer: git-send-email 2.17.2 X-TM-AS-GCONF: 00 x-cbid: 19090913-4275-0000-0000-000003633B9C X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19090913-4276-0000-0000-000038758C21 Message-Id: <20190909132427.30264-1-bmt@zurich.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-09-09_06:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=909 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1909090138 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Use the correct kmap()/kunmap() flow to determine page address used for CRC computation. Using page_address() is wrong, since page might be in highmem. Reported-by: Krishnamraju Eraparaju Fixes: b9be6f18cf9e rdma/siw: transmit path Signed-off-by: Bernard Metzler --- drivers/infiniband/sw/siw/siw_qp_tx.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/infiniband/sw/siw/siw_qp_tx.c b/drivers/infiniband/sw/siw/siw_qp_tx.c index 438a2917a47c..8e72f955921d 100644 --- a/drivers/infiniband/sw/siw/siw_qp_tx.c +++ b/drivers/infiniband/sw/siw/siw_qp_tx.c @@ -518,11 +518,12 @@ static int siw_tx_hdt(struct siw_iwarp_tx *c_tx, struct socket *s) c_tx->mpa_crc_hd, iov[seg].iov_base, plen); - } else if (do_crc) - crypto_shash_update( - c_tx->mpa_crc_hd, - page_address(p) + fp_off, - plen); + } else if (do_crc) { + crypto_shash_update(c_tx->mpa_crc_hd, + kmap(p) + fp_off, + plen); + kunmap(p); + } } else { u64 va = sge->laddr + sge_off;