From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 171DFC282CE for ; Mon, 22 Apr 2019 19:52:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D0473204EC for ; Mon, 22 Apr 2019 19:52:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1555962765; bh=N2cnvf67uS5PXlRQ8txYdu15tfi9sVnAWQp6DaW8HzM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=t2q1OE3n7nXRQejMdRdCLv11SBGEuHLgv1nWury4981/WeKyobeesVI2+xa2f3wcI jwpp2hzhOkuGeIWN3DdoHPnO6K9XlNvcE7fyy8txIpFmUa6TZ3Ju/Mn43NNFnX4eEi LTuTalowT3kzIQXKW8EDongIO68wANr9fJNsnWXs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731343AbfDVTwo (ORCPT ); Mon, 22 Apr 2019 15:52:44 -0400 Received: from mail.kernel.org ([198.145.29.99]:54110 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730207AbfDVTuM (ORCPT ); Mon, 22 Apr 2019 15:50:12 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7DAED218D3; Mon, 22 Apr 2019 19:50:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1555962612; bh=N2cnvf67uS5PXlRQ8txYdu15tfi9sVnAWQp6DaW8HzM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=U2Z9Gz80Td0+2PzJ8+5+4V2UZhL/6zpbvxJpVx5mv3gA16BmzFi5oxZSyglk04yjZ pk/VW6i/1wudc8j8t99bmR+Wlhiu/FQ02aoFDYwZodTtnJ9A1qknsOPQ+BYhjkW+EZ tR7UxvE56WBXj3M1aLQHpQOE5IjCnj9Ou0i3aGY0= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Kangjie Lu , "Martin K . Petersen" , Sasha Levin , linux-scsi@vger.kernel.org Subject: [PATCH AUTOSEL 4.4 15/21] scsi: qla4xxx: fix a potential NULL pointer dereference Date: Mon, 22 Apr 2019 15:49:35 -0400 Message-Id: <20190422194941.13433-15-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190422194941.13433-1-sashal@kernel.org> References: <20190422194941.13433-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kangjie Lu [ Upstream commit fba1bdd2a9a93f3e2181ec1936a3c2f6b37e7ed6 ] In case iscsi_lookup_endpoint fails, the fix returns -EINVAL to avoid NULL pointer dereference. Signed-off-by: Kangjie Lu Acked-by: Manish Rangankar Reviewed-by: Mukesh Ojha Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin (Microsoft) --- drivers/scsi/qla4xxx/ql4_os.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c index f9f899ec9427..c158967b59d7 100644 --- a/drivers/scsi/qla4xxx/ql4_os.c +++ b/drivers/scsi/qla4xxx/ql4_os.c @@ -3207,6 +3207,8 @@ static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session, if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) return -EINVAL; ep = iscsi_lookup_endpoint(transport_fd); + if (!ep) + return -EINVAL; conn = cls_conn->dd_data; qla_conn = conn->dd_data; qla_conn->qla_ep = ep->dd_data; -- 2.19.1