From patchwork Thu Mar 16 14:09:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Desnes Nunes X-Patchwork-Id: 664451 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A5250C6FD19 for ; Thu, 16 Mar 2023 14:11:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231185AbjCPOLI (ORCPT ); Thu, 16 Mar 2023 10:11:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231191AbjCPOLB (ORCPT ); Thu, 16 Mar 2023 10:11:01 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9539625E3A for ; Thu, 16 Mar 2023 07:09:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1678975787; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=i+mGYYulQUCelnuxj3PjgHCArB8Ei0mGxcOTGUHa8as=; b=CW/MJjvdJA4UdPcwv5MWV22zVjSKtEiLVwn/q8AbnAciJMZF0bu7F7p3VpIZZkDi7jVEMH +pMTDg+cYW/PyguQMkPwm+CgjW5y/Dg+6VfAjKcfZQ2X80ybVV9cRBeJyxcXVw8U2NGaQU EOu1SxTlEayYv/+3apkgAhFUwcFM6u4= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-5-0S6QgkyZMHCDuzbWbgswFg-1; Thu, 16 Mar 2023 10:09:38 -0400 X-MC-Unique: 0S6QgkyZMHCDuzbWbgswFg-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 6BA51381459A; Thu, 16 Mar 2023 14:09:35 +0000 (UTC) Received: from desnesn.remote.csb (ovpn-116-3.gru2.redhat.com [10.97.116.3]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8FA9F40C6E67; Thu, 16 Mar 2023 14:09:27 +0000 (UTC) From: Desnes Nunes To: iommu@lists.linux.dev, linux-scsi@vger.kernel.org, storagedev@microchip.com, linux-kernel@vger.kernel.org Cc: hch@lst.de, martin.petersen@oracle.com, don.brace@microchip.com, m.szyprowski@samsung.com, robin.murphy@arm.com, jejb@linux.ibm.com, jsnitsel@redhat.com, Desnes Nunes Subject: [PATCH v2 3/3] scsi: smartpqi: fix DMA overlapping mappings asymmetry Date: Thu, 16 Mar 2023 11:09:12 -0300 Message-Id: <20230316140912.1038404-4-desnesn@redhat.com> In-Reply-To: <20230316140912.1038404-1-desnesn@redhat.com> References: <20230316140912.1038404-1-desnesn@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Currently, pqi_keep_device_offline() calls pqi_build_raid_path_request() (i.e., a wrapper to pqi_map_single()), but there isn't a pqi_pci_unmap() call in pqi_keep_device_offline(). Hence, this is flaged as an API viola- tion due to the overlapping mapping of the physical address. This patch fixes following warning: DMA-API: smartpqi 0000:43:00.0: cacheline tracking EEXIST, overlapping mappings aren't supported WARNING: CPU: 0 PID: 15 at kernel/dma/debug.c:570 add_dma_entry+0x1f6/0x2f0 CPU: 0 PID: 15 Comm: kworker/0:1 Not tainted 6.3.0-rc1-linux #1 Call Trace: dma_map_page_attrs+0x6f/0xa0 pqi_map_single+0xaa/0x160 [smartpqi] pqi_keep_device_offline+0xaf/0x160 [smartpqi] ? dma_unmap_page_attrs+0x1a1/0x1e0 ? pqi_identify_physical_device.constprop.0+0xd3/0xe0 [smartpqi] pqi_update_scsi_devices+0x284/0x7e0 [smartpqi] pqi_scan_scsi_devices+0x87/0xe0 [smartpqi] pqi_ctrl_init+0x725/0xa60 [smartpqi] pqi_pci_probe+0xa7/0x130 [smartpqi] local_pci_probe+0x46/0xa0 work_for_cpu_fn+0x16/0x20 process_one_work+0x2bf/0x670 ? __pfx_worker_thread+0x10/0x10 worker_thread+0x1d1/0x3b0 ? __pfx_worker_thread+0x10/0x10 kthread+0xf3/0x120 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x2c/0x50 Fixes: be76f90668d8 ("scsi: smartpqi: Add TEST UNIT READY check for SANITIZE operation") Signed-off-by: Desnes Nunes --- drivers/scsi/smartpqi/smartpqi_init.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 49a8f91810b6..6fca497ca605 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -1726,6 +1726,8 @@ static bool pqi_keep_device_offline(struct pqi_ctrl_info *ctrl_info, rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, &error_info); + pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir); + if (rc) goto out; /* Assume not offline */