From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 423B2C3A59C for ; Fri, 16 Aug 2019 06:42:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 145422133F for ; Fri, 16 Aug 2019 06:42:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726816AbfHPGmW (ORCPT ); Fri, 16 Aug 2019 02:42:22 -0400 Received: from mail.monom.org ([188.138.9.77]:52468 "EHLO mail.monom.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725945AbfHPGmW (ORCPT ); Fri, 16 Aug 2019 02:42:22 -0400 Received: from mail.monom.org (localhost [127.0.0.1]) by filter.mynetwork.local (Postfix) with ESMTP id 9F9DB5006D2; Fri, 16 Aug 2019 08:42:20 +0200 (CEST) Received: from localhost (b9168f76.cgn.dg-w.de [185.22.143.118]) by mail.monom.org (Postfix) with ESMTPSA id 79A34500665; Fri, 16 Aug 2019 08:42:20 +0200 (CEST) From: Daniel Wagner To: Clark Williams , John Kacur Cc: linux-rt-users@vger.kernel.org, Daniel Wagner Subject: [PATCH rt-tests v0 1/4] pmqtest: Increase buffer to avoid overflow Date: Fri, 16 Aug 2019 08:42:01 +0200 Message-Id: <20190816064204.6339-2-wagi@monom.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190816064204.6339-1-wagi@monom.org> References: <20190816064204.6339-1-wagi@monom.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-rt-users-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rt-users@vger.kernel.org Increase the size of the char buffer. gcc 9.1.1 reports: src/pmqtest/pmqtest.c: In function ‘main’: src/pmqtest/pmqtest.c:46:21: warning: ‘%d’ directive writing between 1 and 10 bytes into a region of size 8 [-Wformat-overflow=] 46 | #define SYNCMQ_NAME "/syncmsg%d" | ^~~~~~~~~~~~ src/pmqtest/pmqtest.c:445:3: note: ‘sprintf’ output between 10 and 19 bytes into a destination of size 16 445 | sprintf(mqname, SYNCMQ_NAME, i); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by: Daniel Wagner --- src/pmqtest/pmqtest.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/pmqtest/pmqtest.c b/src/pmqtest/pmqtest.c index a04fc49872bf..20164c8d547f 100644 --- a/src/pmqtest/pmqtest.c +++ b/src/pmqtest/pmqtest.c @@ -440,7 +440,7 @@ int main(int argc, char *argv[]) goto nomem; for (i = 0; i < num_threads; i++) { - char mqname[16]; + char mqname[32]; sprintf(mqname, SYNCMQ_NAME, i); receiver[i].syncmq = mq_open(mqname, oflag, 0777, &mqstat); @@ -567,7 +567,7 @@ int main(int argc, char *argv[]) } nanosleep(&maindelay, NULL); for (i = 0; i < num_threads; i++) { - char mqname[16]; + char mqname[32]; mq_close(receiver[i].syncmq); sprintf(mqname, SYNCMQ_NAME, i); -- 2.21.0