From patchwork Mon Nov 13 10:45:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jie Hai X-Patchwork-Id: 134152 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 AD65A430AB; Mon, 13 Nov 2023 11:53:01 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 3C2CC40F16; Mon, 13 Nov 2023 11:51:20 +0100 (CET) Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [45.249.212.189]) by mails.dpdk.org (Postfix) with ESMTP id 1B85B40A8B for ; Mon, 13 Nov 2023 11:51:07 +0100 (CET) Received: from kwepemd100004.china.huawei.com (unknown [172.30.72.53]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4STR1g6M8VzMmnp; Mon, 13 Nov 2023 18:46:31 +0800 (CST) Received: from localhost.localdomain (10.67.165.2) by kwepemd100004.china.huawei.com (7.221.188.31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.1258.23; Mon, 13 Nov 2023 18:51:05 +0800 From: Jie Hai To: , Maxime Coquelin , Chenbo Xia CC: , , Subject: [PATCH 21/21] examples/vhost: replace strtok with strtok_r Date: Mon, 13 Nov 2023 18:45:50 +0800 Message-ID: <20231113104550.2138654-22-haijie1@huawei.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20231113104550.2138654-1-haijie1@huawei.com> References: <20231113104550.2138654-1-haijie1@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.165.2] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemd100004.china.huawei.com (7.221.188.31) X-CFilter-Loop: Reflected 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 Multiple threads calling the same function may cause condition race issues, which often leads to abnormal behavior and can cause more serious vulnerabilities such as abnormal termination, denial of service, and compromised data integrity. The strtok() is non-reentrant, it is better to replace it with a reentrant function. Signed-off-by: Jie Hai --- examples/vhost/main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/examples/vhost/main.c b/examples/vhost/main.c index ce5c1efddf5c..e8b3a97c48a4 100644 --- a/examples/vhost/main.c +++ b/examples/vhost/main.c @@ -246,6 +246,7 @@ open_dma(const char *value) char *ptrs[2]; char *start, *end, *substr; int64_t socketid, vring_id; + char *sp = NULL; struct rte_dma_info info; struct rte_dma_conf dev_config = { .nb_vchans = 1 }; @@ -269,7 +270,7 @@ open_dma(const char *value) /* process DMA devices within bracket. */ addrs++; - substr = strtok(addrs, ";]"); + substr = strtok_r(addrs, ";]", &sp); if (!substr) { ret = -1; goto out;