From patchwork Wed Apr 21 02:46:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "humin (Q)" X-Patchwork-Id: 91901 X-Patchwork-Delegate: thomas@monjalon.net 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 35034A0547; Wed, 21 Apr 2021 04:46:45 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id B21FF418AA; Wed, 21 Apr 2021 04:46:44 +0200 (CEST) Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) by mails.dpdk.org (Postfix) with ESMTP id E666641385 for ; Wed, 21 Apr 2021 04:46:43 +0200 (CEST) Received: from DGGEMS409-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4FQ4dH6Cybz1BH6R; Wed, 21 Apr 2021 10:44:19 +0800 (CST) Received: from localhost.localdomain (10.69.192.56) by DGGEMS409-HUB.china.huawei.com (10.3.19.209) with Microsoft SMTP Server id 14.3.498.0; Wed, 21 Apr 2021 10:46:39 +0800 From: "Min Hu (Connor)" To: CC: , , Date: Wed, 21 Apr 2021 10:46:53 +0800 Message-ID: <1618973213-25718-1-git-send-email-humin29@huawei.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.69.192.56] X-CFilter-Loop: Reflected Subject: [dpdk-dev] [PATCH] common/dpaax: fix possible null pointer access 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: Chengwen Feng This patch fixes possible null pointer access when dump iova table. Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table") Cc: stable@dpdk.org Signed-off-by: Chengwen Feng Signed-off-by: Min Hu (Connor) Acked-by: Hemant Agrawal --- drivers/common/dpaax/dpaax_iova_table.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/common/dpaax/dpaax_iova_table.c b/drivers/common/dpaax/dpaax_iova_table.c index 91bee65..54f89e1 100644 --- a/drivers/common/dpaax/dpaax_iova_table.c +++ b/drivers/common/dpaax/dpaax_iova_table.c @@ -366,8 +366,10 @@ dpaax_iova_table_dump(void) } DPAAX_DEBUG(" === Start of PA->VA Translation Table ==="); - if (dpaax_iova_table_p == NULL) + if (dpaax_iova_table_p == NULL) { DPAAX_DEBUG("\tNULL"); + return; + } entry = dpaax_iova_table_p->entries; for (i = 0; i < dpaax_iova_table_p->count; i++) {