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=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 50B22C169C4 for ; Sun, 3 Feb 2019 14:04:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2101D20823 for ; Sun, 3 Feb 2019 14:04:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729586AbfBCOE4 (ORCPT ); Sun, 3 Feb 2019 09:04:56 -0500 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:52776 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727786AbfBCNtn (ORCPT ); Sun, 3 Feb 2019 08:49:43 -0500 Received: from cable-78.29.236.164.coditel.net ([78.29.236.164] helo=deadeye) by shadbolt.decadent.org.uk with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1gqI9T-0003tw-L7; Sun, 03 Feb 2019 13:49:39 +0000 Received: from ben by deadeye with local (Exim 4.92-RC4) (envelope-from ) id 1gqI9U-0006of-41; Sun, 03 Feb 2019 14:49:40 +0100 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, Denis Kirjanov , "Anders Roxell" , "Shuah Khan (Samsung OSG)" Date: Sun, 03 Feb 2019 14:45:08 +0100 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) X-Patchwork-Hint: ignore Subject: [PATCH 3.16 021/305] cpupower: remove stringop-truncation waring In-Reply-To: X-SA-Exim-Connect-IP: 78.29.236.164 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.16.63-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Anders Roxell commit 8a7e2d2ea080d10a189a1d611344b0330468ebc3 upstream. The strncpy doesn't null terminate the string because the size is too short by one byte. parse.c: In function ‘prepare_default_config’: parse.c:148:2: warning: ‘strncpy’ output truncated before terminating nul copying 8 bytes from a string of the same length [-Wstringop-truncation] strncpy(config->governor, "ondemand", 8); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The normal method of passing the length of the destination buffer works correctly here. Fixes: 7fe2f6399a84 ("cpupowerutils - cpufrequtils extended with quite some features") Signed-off-by: Anders Roxell Signed-off-by: Shuah Khan (Samsung OSG) Signed-off-by: Ben Hutchings --- tools/power/cpupower/bench/parse.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/tools/power/cpupower/bench/parse.c +++ b/tools/power/cpupower/bench/parse.c @@ -135,7 +135,7 @@ struct config *prepare_default_config() config->cpu = 0; config->prio = SCHED_HIGH; config->verbose = 0; - strncpy(config->governor, "ondemand", 8); + strncpy(config->governor, "ondemand", sizeof(config->governor)); config->output = stdout;