From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 2333843325; Tue, 14 Nov 2023 09:48:33 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id D801D40E36; Tue, 14 Nov 2023 09:47:30 +0100 (CET) Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by mails.dpdk.org (Postfix) with ESMTP id C456240697 for ; Tue, 14 Nov 2023 09:47:18 +0100 (CET) Received: from kwepemd100004.china.huawei.com (unknown [172.30.72.57]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4SV0Fp57zNzrVDF for ; Tue, 14 Nov 2023 16:43:58 +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; Tue, 14 Nov 2023 16:47:17 +0800 From: Jie Hai To: , Ciara Power , Keith Wiles , Bruce Richardson CC: , , Subject: [PATCH v2 14/22] telemetry: replace strtok with reentrant version Date: Tue, 14 Nov 2023 16:41:25 +0800 Message-ID: <20231114084133.3573959-15-haijie1@huawei.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20231114084133.3573959-1-haijie1@huawei.com> References: <20231113104550.2138654-1-haijie1@huawei.com> <20231114084133.3573959-1-haijie1@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.67.165.2] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) 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 version. Fixes: 6dd571fd07c3 ("telemetry: introduce new functionality") Cc: stable@dpdk.org Signed-off-by: Jie Hai Acked-by: Chengwen Feng --- lib/telemetry/telemetry.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/lib/telemetry/telemetry.c b/lib/telemetry/telemetry.c index 92982842a860..ef5cc87c34d1 100644 --- a/lib/telemetry/telemetry.c +++ b/lib/telemetry/telemetry.c @@ -371,6 +371,7 @@ static void * client_handler(void *sock_id) { int s = (int)(uintptr_t)sock_id; + char *sp = NULL; char buffer[1024]; char info_str[1024]; snprintf(info_str, sizeof(info_str), @@ -385,8 +386,8 @@ client_handler(void *sock_id) int bytes = read(s, buffer, sizeof(buffer) - 1); while (bytes > 0) { buffer[bytes] = 0; - const char *cmd = strtok(buffer, ","); - const char *param = strtok(NULL, "\0"); + const char *cmd = strtok_s(buffer, ",", &sp); + const char *param = strtok_s(NULL, "\0", &sp); telemetry_cb fn = unknown_command; int i; -- 2.30.0