From patchwork Mon Sep 27 12:26:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nipun Gupta X-Patchwork-Id: 99784 Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 6A7CFA0548; Mon, 27 Sep 2021 14:28:09 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id B961C41158; Mon, 27 Sep 2021 14:27:11 +0200 (CEST) Received: from inva021.nxp.com (inva021.nxp.com [92.121.34.21]) by mails.dpdk.org (Postfix) with ESMTP id 8B39F410ED; Mon, 27 Sep 2021 14:26:57 +0200 (CEST) Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 6C5B6201434; Mon, 27 Sep 2021 14:26:57 +0200 (CEST) Received: from aprdc01srsp001v.ap-rdc01.nxp.com (aprdc01srsp001v.ap-rdc01.nxp.com [165.114.16.16]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 270D2201127; Mon, 27 Sep 2021 14:26:57 +0200 (CEST) Received: from lsv03274.swis.in-blr01.nxp.com (lsv03274.swis.in-blr01.nxp.com [92.120.147.114]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 5DD7E183AD07; Mon, 27 Sep 2021 20:26:56 +0800 (+08) From: nipun.gupta@nxp.com To: dev@dpdk.org Cc: thomas@monjalon.net, ferruh.yigit@intel.com, hemant.agrawal@nxp.com, sachin.saxena@nxp.com, stable@dpdk.org, Gagandeep Singh , Nipun Gupta Date: Mon, 27 Sep 2021 17:56:50 +0530 Message-Id: <20210927122650.30881-12-nipun.gupta@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210927122650.30881-1-nipun.gupta@nxp.com> References: <20210927122650.30881-1-nipun.gupta@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP Subject: [dpdk-dev] [PATCH 11/11] common/dpaax: fix paddr to vaddr invalid conversion X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Gagandeep Singh If some of the VA entries of table are somehow not populated and are NULL, it can add offset to NULL and return the invalid VA in PA to VA conversion. In this patch, adding a check if the VA entry has valid address only then add offset and return VA. Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table") Cc: stable@dpdk.org Signed-off-by: Gagandeep Singh Signed-off-by: Nipun Gupta --- drivers/common/dpaax/dpaax_iova_table.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/common/dpaax/dpaax_iova_table.h b/drivers/common/dpaax/dpaax_iova_table.h index 230fba8ba0..d7087ee7ca 100644 --- a/drivers/common/dpaax/dpaax_iova_table.h +++ b/drivers/common/dpaax/dpaax_iova_table.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: BSD-3-Clause - * Copyright 2018 NXP + * Copyright 2018-2021 NXP */ #ifndef _DPAAX_IOVA_TABLE_H_ @@ -101,6 +101,12 @@ dpaax_iova_table_get_va(phys_addr_t paddr) { /* paddr > entry->start && paddr <= entry->(start+len) */ index = (paddr_align - entry[i].start)/DPAAX_MEM_SPLIT; + /* paddr is within range, but no vaddr entry ever written + * at index + */ + if ((void *)entry[i].pages[index] == NULL) + return NULL; + vaddr = (void *)((uintptr_t)entry[i].pages[index] + offset); break; } while (1);