From patchwork Tue Sep 8 09:56:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manish Rangankar X-Patchwork-Id: 296822 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 0ED7AC433E2 for ; Tue, 8 Sep 2020 09:59:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D00DA21D7A for ; Tue, 8 Sep 2020 09:59:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=marvell.com header.i=@marvell.com header.b="g2YP1S8s" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729158AbgIHJ7E (ORCPT ); Tue, 8 Sep 2020 05:59:04 -0400 Received: from mx0a-0016f401.pphosted.com ([67.231.148.174]:52324 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728828AbgIHJ7E (ORCPT ); Tue, 8 Sep 2020 05:59:04 -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 0889p6Rl002554; Tue, 8 Sep 2020 02:58:59 -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=g2YP1S8sw7deX+woONcvAumfj2REZP7FKZr+LJqbJn6UQs0B4xdnAKRTYDthroSHFyAt ZuqVOw515FRlOpVSnW8FA24fmUAz5JBKU11kncB+4UqUTaHul1+5vqgGfbyRXUh7hOIm lc1Eir8Es+rixRhV7gVduF6HaDZ8Sa1R7XWFwthCJqW4nJE0wnqiJHemBfZb2+Oj1h/k OzmWE1SJXYCeYej/BWFqvM3TyHndeiAtKZfiNAjarmAUYQmQYdKjpbzhmAFc27aw8Lr3 2uvsj+vRyzwz06f7xiBiXPRsMnE/c9IMHEPfGEnkYJDyyjfhEEJqLNfh2WQAJJvxL/bk kQ== Received: from sc-exch02.marvell.com ([199.233.58.182]) by mx0a-0016f401.pphosted.com with ESMTP id 33c81pu0tf-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Tue, 08 Sep 2020 02:58:59 -0700 Received: from DC5-EXCH01.marvell.com (10.69.176.38) by SC-EXCH02.marvell.com (10.93.176.82) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 8 Sep 2020 02:58:58 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 8 Sep 2020 02:58:58 -0700 Received: from dut1171.mv.qlogic.com (unknown [10.112.88.18]) by maili.marvell.com (Postfix) with ESMTP id 666EF3F703F; Tue, 8 Sep 2020 02:58:58 -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 0889wwip026888; Tue, 8 Sep 2020 02:58:58 -0700 Received: (from root@localhost) by dut1171.mv.qlogic.com (8.14.7/8.14.7/Submit) id 0889wweR026887; Tue, 8 Sep 2020 02:58:58 -0700 From: Manish Rangankar To: , , CC: , Subject: [PATCH v2 4/8] qedi: Protect active command list to avoid list corruption Date: Tue, 8 Sep 2020 02:56:53 -0700 Message-ID: <20200908095657.26821-5-mrangankar@marvell.com> X-Mailer: git-send-email 2.12.0 In-Reply-To: <20200908095657.26821-1-mrangankar@marvell.com> References: <20200908095657.26821-1-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_05:2020-09-08,2020-09-08 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)