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=-19.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 5817BC433B4 for ; Wed, 28 Apr 2021 11:12:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2686B6143B for ; Wed, 28 Apr 2021 11:12:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239677AbhD1LMq (ORCPT ); Wed, 28 Apr 2021 07:12:46 -0400 Received: from mail.kernel.org ([198.145.29.99]:43874 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239652AbhD1LM3 (ORCPT ); Wed, 28 Apr 2021 07:12:29 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 621836142E; Wed, 28 Apr 2021 11:11:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1619608304; bh=xlnvhdu5Oni/7aSVgRMSR2mdTkG5kMknDXPHQUPUELI=; h=From:To:Cc:Subject:Date:From; b=bd2yRiEq2tpdY9yjt4np5NJbnJ0oUJL0gTKM8wQW2eFSwQqQ4lrsIc4eIjjWxOPot iTuPC818tOI9iNC4tCVIrveglCNMcsTUlsxFxwIuAeqQNVT47oswCt9gtImaMhvkAi yT/uBmIJzjbcXU4dhx8+UeEvPBLuqGYhWn44sNcKxSnYLZ8Nzi9IoTyMS0YmOEnfF9 UGf4h66ADvHdQybu9KvaPTfXgTh9lll58UsBcKcBNfxq/wPF7Ncsy6EJBet6g3zIFq BTq8Xmb4OV7DEOnz5kslPKXaH1wvU3z6Ky1xKLjfj8XKjoVAjkQLfVwoo5Ogibc+Kq erthKq+uZU1Hg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Zhen Lei , Hulk Robot , Alexander Shishkin , Jiri Olsa , Mark Rutland , Namhyung Kim , Peter Zijlstra , Arnaldo Carvalho de Melo , Sasha Levin Subject: [PATCH AUTOSEL 5.10 1/4] perf data: Fix error return code in perf_data__create_dir() Date: Wed, 28 Apr 2021 07:11:38 -0400 Message-Id: <20210428111141.1343299-1-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Zhen Lei [ Upstream commit f2211881e737cade55e0ee07cf6a26d91a35a6fe ] Although 'ret' has been initialized to -1, but it will be reassigned by the "ret = open(...)" statement in the for loop. So that, the value of 'ret' is unknown when asprintf() failed. Reported-by: Hulk Robot Signed-off-by: Zhen Lei Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20210415083417.3740-1-thunder.leizhen@huawei.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin --- tools/perf/util/data.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c index c47aa34fdc0a..5d97b3e45fbb 100644 --- a/tools/perf/util/data.c +++ b/tools/perf/util/data.c @@ -35,7 +35,7 @@ void perf_data__close_dir(struct perf_data *data) int perf_data__create_dir(struct perf_data *data, int nr) { struct perf_data_file *files = NULL; - int i, ret = -1; + int i, ret; if (WARN_ON(!data->is_dir)) return -EINVAL; @@ -51,7 +51,8 @@ int perf_data__create_dir(struct perf_data *data, int nr) for (i = 0; i < nr; i++) { struct perf_data_file *file = &files[i]; - if (asprintf(&file->path, "%s/data.%d", data->path, i) < 0) + ret = asprintf(&file->path, "%s/data.%d", data->path, i); + if (ret < 0) goto out_err; ret = open(file->path, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR); -- 2.30.2