From patchwork Sun Jun 7 19:58:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sudhakar Panneerselvam X-Patchwork-Id: 213811 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.9 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, UNPARSEABLE_RELAY, USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 37A76C433E0 for ; Sun, 7 Jun 2020 19:58:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 073AB2074B for ; Sun, 7 Jun 2020 19:58:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="zhgXWCVM" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726954AbgFGT6n (ORCPT ); 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Sun, 07 Jun 2020 19:58:42 +0000 Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 057JwX8N132811; Sun, 7 Jun 2020 19:58:41 GMT Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by userp3020.oracle.com with ESMTP id 31gmwnxraf-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sun, 07 Jun 2020 19:58:41 +0000 Received: from abhmp0003.oracle.com (abhmp0003.oracle.com [141.146.116.9]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 057JwemW008213; Sun, 7 Jun 2020 19:58:40 GMT Received: from supannee-devvm-ol7.osdevelopmeniad.oraclevcn.com (/100.100.231.179) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Sun, 07 Jun 2020 12:58:40 -0700 From: Sudhakar Panneerselvam To: martin.petersen@oracle.com, michael.christie@oracle.com, target-devel@vger.kernel.org, linux-scsi@vger.kernel.org Cc: shirley.ma@oracle.com Subject: [PATCH v4 0/4] target: fix NULL pointer dereference Date: Sun, 7 Jun 2020 19:58:29 +0000 Message-Id: <1591559913-8388-1-git-send-email-sudhakar.panneerselvam@oracle.com> X-Mailer: git-send-email 1.8.3.1 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9645 signatures=668680 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 spamscore=0 adultscore=0 mlxscore=0 mlxlogscore=999 bulkscore=0 malwarescore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2006070156 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9645 signatures=668680 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 priorityscore=1501 lowpriorityscore=0 impostorscore=0 cotscore=-2147483648 suspectscore=0 spamscore=0 bulkscore=0 malwarescore=0 phishscore=0 mlxscore=0 mlxlogscore=999 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2006070155 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The following set of commits address a NULL pointer dereference and some refactoring around this issue. v4: - initialize the LUN in transport_init_se_cmd() v3: - fix NULL pointer dereference when cdb initialization fails v2: - new helper is named as target_cmd_init_cdb() - existing function, target_setup_cmd_from_cdb is renamed as target_cmd_parse_cdb() Sudhakar Panneerselvam (4): target: factor out a new helper, target_cmd_init_cdb() target: initialize LUN in transport_init_se_cmd(). target: fix NULL pointer dereference target: rename target_setup_cmd_from_cdb() to target_cmd_parse_cdb() drivers/target/iscsi/iscsi_target.c | 29 ++++++++++-------- drivers/target/target_core_device.c | 19 +++++------- drivers/target/target_core_tmr.c | 4 +-- drivers/target/target_core_transport.c | 55 ++++++++++++++++++++++++++-------- drivers/target/target_core_xcopy.c | 9 ++++-- drivers/usb/gadget/function/f_tcm.c | 6 ++-- include/target/target_core_fabric.h | 9 +++--- 7 files changed, 83 insertions(+), 48 deletions(-)