From patchwork Tue Oct 27 13:55:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 312929 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,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 0D529C55178 for ; Tue, 27 Oct 2020 14:30:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C0BF52225E for ; Tue, 27 Oct 2020 14:30:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603809042; bh=Jjv1SfmF6jVuVBGSR75YVKKJ3jV9VsVDlFNrZ42vDPs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ubdZ1bKD8GlPGgj/8aw7epkQh1VF24EAPp7fZoSfUrqqZD9dkw2+ndW8IY3cQc4pw wFgqsZzVuSU097GXQic/Lz5jp08zaKJKaSyZW/FUi47crkWkdFVQOB1w/Znn3KSPbX FvPowgK92i9XPHXkDrImBcA+eJDRsthIPxZ49LKg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759247AbgJ0O22 (ORCPT ); Tue, 27 Oct 2020 10:28:28 -0400 Received: from mail.kernel.org ([198.145.29.99]:54820 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759242AbgJ0O22 (ORCPT ); Tue, 27 Oct 2020 10:28:28 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EC4E6206DC; Tue, 27 Oct 2020 14:28:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603808907; bh=Jjv1SfmF6jVuVBGSR75YVKKJ3jV9VsVDlFNrZ42vDPs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DvCmLRbhpd7ZHSQcouOjkdzxvRJPvuuTZBaN8VvmyOlipDIO1NnsdXaTh/3DQT1je t3pKVIK3eykjUu9h++K3FVNBKD92tthCVG7a7wJzIHPK7yd6bBOcdwGbMo6Cx0Z1Ng Tu2SjRW+45RQUyV65mHLwuiapuqOtdH9sRfDV+9A= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Nilesh Javali , Manish Rangankar , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.19 249/264] scsi: qedi: Protect active command list to avoid list corruption Date: Tue, 27 Oct 2020 14:55:07 +0100 Message-Id: <20201027135442.345124835@linuxfoundation.org> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201027135430.632029009@linuxfoundation.org> References: <20201027135430.632029009@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Nilesh Javali [ Upstream commit c0650e28448d606c84f76c34333dba30f61de993 ] 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. Link: https://lore.kernel.org/r/20200908095657.26821-5-mrangankar@marvell.com Signed-off-by: Nilesh Javali Signed-off-by: Manish Rangankar Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- 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 25d763ae5d5a6..0d00970b7e25e 100644 --- a/drivers/scsi/qedi/qedi_fw.c +++ b/drivers/scsi/qedi/qedi_fw.c @@ -62,6 +62,7 @@ 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); @@ -72,6 +73,7 @@ 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); @@ -125,6 +127,7 @@ 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); @@ -135,6 +138,7 @@ 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); @@ -227,11 +231,13 @@ 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) || @@ -293,11 +299,13 @@ 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 aa451c8b49e56..4e8c5fcbded6a 100644 --- a/drivers/scsi/qedi/qedi_iscsi.c +++ b/drivers/scsi/qedi/qedi_iscsi.c @@ -976,11 +976,13 @@ 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)