From patchwork Tue Sep 8 05:24:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manish Rangankar X-Patchwork-Id: 257709 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=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, 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 E276FC43461 for ; Tue, 8 Sep 2020 05:26:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AF914218AC for ; Tue, 8 Sep 2020 05:26:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=marvell.com header.i=@marvell.com header.b="WhIURb0O" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728474AbgIHF0X (ORCPT ); Tue, 8 Sep 2020 01:26:23 -0400 Received: from mx0a-0016f401.pphosted.com ([67.231.148.174]:29972 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725903AbgIHF0X (ORCPT ); Tue, 8 Sep 2020 01:26:23 -0400 Received: from pps.filterd (m0045849.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0885P5cw023575; Mon, 7 Sep 2020 22:26:16 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=pfpt0220; bh=g7EJ0ES+qzVmtE56onOJLs0Go+C/M6IL3HMq7BqnnlM=; b=WhIURb0O/OQpsC4/LXEabtceRCe7ijVSM49Cs5/hOXJ32m5cSYfDIqrFaFNo2y1LNxTZ epV5FmAAmzA0gy882GY4urh/MnSs3knB29mPdyu1Q3TwFaN653kIYXFIx9l9PiZI6Upm L3aRJYketaIFurwHEWavqFKmsWc9tjVkKcYHJk6UWiNI2xsdFOWU6WG6pQmHpoujk+Ts F6DYOQRgg0vetXmN97tHHHAZwyHQpjHsVb6oK9r27kbI/i+bbS/3qvHC2taU0JyxRpVG 6dSfTepzyuV8WLMSL0AZGdm3RysGbh47KRX9IHTylpnwE2/JWWEr2f4MMp9Kv2R4XtFi dQ== Received: from sc-exch01.marvell.com ([199.233.58.181]) by mx0a-0016f401.pphosted.com with ESMTP id 33c81pt6ce-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Mon, 07 Sep 2020 22:26:16 -0700 Received: from DC5-EXCH02.marvell.com (10.69.176.39) by SC-EXCH01.marvell.com (10.93.176.81) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 7 Sep 2020 22:26:14 -0700 Received: from DC5-EXCH02.marvell.com (10.69.176.39) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 7 Sep 2020 22:26:13 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 7 Sep 2020 22:26:13 -0700 Received: from dut1171.mv.qlogic.com (unknown [10.112.88.18]) by maili.marvell.com (Postfix) with ESMTP id 1C0673F703F; Mon, 7 Sep 2020 22:26:13 -0700 (PDT) Received: from dut1171.mv.qlogic.com (localhost [127.0.0.1]) by dut1171.mv.qlogic.com (8.14.7/8.14.7) with ESMTP id 0885QCag021985; Mon, 7 Sep 2020 22:26:12 -0700 Received: (from root@localhost) by dut1171.mv.qlogic.com (8.14.7/8.14.7/Submit) id 0885QCTI021976; Mon, 7 Sep 2020 22:26:12 -0700 From: Manish Rangankar To: , , CC: , Subject: [PATCH 4/8] qedi: Protect active command list to avoid list corruption Date: Mon, 7 Sep 2020 22:24:08 -0700 Message-ID: <20200908052412.21917-5-mrangankar@marvell.com> X-Mailer: git-send-email 2.12.0 In-Reply-To: <20200908052412.21917-1-mrangankar@marvell.com> References: <20200908052412.21917-1-mrangankar@marvell.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-09-08_02:2020-09-07,2020-09-08 signatures=0 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Nilesh Javali Protect active command list for non i/o commands like, login response, logout response, text response and recovery cleanup of active list to avoid list corruption. Signed-off-by: Nilesh Javali Signed-off-by: Manish Rangankar --- drivers/scsi/qedi/qedi_fw.c | 8 ++++++++ drivers/scsi/qedi/qedi_iscsi.c | 2 ++ 2 files changed, 10 insertions(+) diff --git a/drivers/scsi/qedi/qedi_fw.c b/drivers/scsi/qedi/qedi_fw.c index 34c477bda8a4..f158fde0a43c 100644 --- a/drivers/scsi/qedi/qedi_fw.c +++ b/drivers/scsi/qedi/qedi_fw.c @@ -59,6 +59,7 @@ static void qedi_process_logout_resp(struct qedi_ctx *qedi, "Freeing tid=0x%x for cid=0x%x\n", cmd->task_id, qedi_conn->iscsi_conn_id); + spin_lock(&qedi_conn->list_lock); if (likely(cmd->io_cmd_in_list)) { cmd->io_cmd_in_list = false; list_del_init(&cmd->io_cmd); @@ -69,6 +70,7 @@ static void qedi_process_logout_resp(struct qedi_ctx *qedi, cmd->task_id, qedi_conn->iscsi_conn_id, &cmd->io_cmd); } + spin_unlock(&qedi_conn->list_lock); cmd->state = RESPONSE_RECEIVED; qedi_clear_task_idx(qedi, cmd->task_id); @@ -122,6 +124,7 @@ static void qedi_process_text_resp(struct qedi_ctx *qedi, "Freeing tid=0x%x for cid=0x%x\n", cmd->task_id, qedi_conn->iscsi_conn_id); + spin_lock(&qedi_conn->list_lock); if (likely(cmd->io_cmd_in_list)) { cmd->io_cmd_in_list = false; list_del_init(&cmd->io_cmd); @@ -132,6 +135,7 @@ static void qedi_process_text_resp(struct qedi_ctx *qedi, cmd->task_id, qedi_conn->iscsi_conn_id, &cmd->io_cmd); } + spin_unlock(&qedi_conn->list_lock); cmd->state = RESPONSE_RECEIVED; qedi_clear_task_idx(qedi, cmd->task_id); @@ -222,11 +226,13 @@ static void qedi_process_tmf_resp(struct qedi_ctx *qedi, tmf_hdr = (struct iscsi_tm *)qedi_cmd->task->hdr; + spin_lock(&qedi_conn->list_lock); if (likely(qedi_cmd->io_cmd_in_list)) { qedi_cmd->io_cmd_in_list = false; list_del_init(&qedi_cmd->io_cmd); qedi_conn->active_cmd_count--; } + spin_unlock(&qedi_conn->list_lock); if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) || @@ -288,11 +294,13 @@ static void qedi_process_login_resp(struct qedi_ctx *qedi, ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK; qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len; + spin_lock(&qedi_conn->list_lock); if (likely(cmd->io_cmd_in_list)) { cmd->io_cmd_in_list = false; list_del_init(&cmd->io_cmd); qedi_conn->active_cmd_count--; } + spin_unlock(&qedi_conn->list_lock); memset(task_ctx, '\0', sizeof(*task_ctx)); diff --git a/drivers/scsi/qedi/qedi_iscsi.c b/drivers/scsi/qedi/qedi_iscsi.c index f815845fc568..ae86a40ca040 100644 --- a/drivers/scsi/qedi/qedi_iscsi.c +++ b/drivers/scsi/qedi/qedi_iscsi.c @@ -975,11 +975,13 @@ static void qedi_cleanup_active_cmd_list(struct qedi_conn *qedi_conn) { struct qedi_cmd *cmd, *cmd_tmp; + spin_lock(&qedi_conn->list_lock); list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list, io_cmd) { list_del_init(&cmd->io_cmd); qedi_conn->active_cmd_count--; } + spin_unlock(&qedi_conn->list_lock); } static void qedi_ep_disconnect(struct iscsi_endpoint *ep)