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=-6.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 72E83C169C4 for ; Mon, 11 Feb 2019 14:38:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 37610222AA for ; Mon, 11 Feb 2019 14:38:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549895900; bh=S4o7OIj/57ayV9M8bZ+wqRjqRphTcrD61lu22oS85qQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=xQfIk9axXM0Ihw+42SgO4+RjSj77wLBOa7gh9/DZTmLL6JkbZ0Htq9wGyIh2NhpO+ Cj20KR+rS2pBudu8qabytqUFYKk0LcYIRFRPfsglMwM+NxtzUb3Ikln8YhBjiu1997 04mP8BEX2Q/GbksxSXrLCoBoRqEP3FfIsa4GjSVs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731643AbfBKOiS (ORCPT ); Mon, 11 Feb 2019 09:38:18 -0500 Received: from mail.kernel.org ([198.145.29.99]:47938 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731631AbfBKOiP (ORCPT ); Mon, 11 Feb 2019 09:38:15 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 84FFB222A2; Mon, 11 Feb 2019 14:38:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549895895; bh=S4o7OIj/57ayV9M8bZ+wqRjqRphTcrD61lu22oS85qQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VZfA/TsP1mUFE6hxrWjrcxseHCB4DgTs8iR0bBeDrr1z67ZOgp4oPXyJkVLrqhadE fUmMWkEzzE/FaqB56QE44/QwW0i83fGg+rdhaFLOSKqhLXE+9BR1iQE95l4/f9P3sT DewKMa25Iwrb4uSphd91affzQaWU4oZcZv6XkKek= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "Gustavo A. R. Silva" , Jiri Olsa , Alexander Shishkin , Namhyung Kim , Peter Zijlstra , Arnaldo Carvalho de Melo Subject: [PATCH 4.20 347/352] perf tests evsel-tp-sched: Fix bitwise operator Date: Mon, 11 Feb 2019 15:19:34 +0100 Message-Id: <20190211141909.252984338@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190211141846.543045703@linuxfoundation.org> References: <20190211141846.543045703@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.20-stable review patch. If anyone has any objections, please let me know. ------------------ From: Gustavo A. R. Silva commit 489338a717a0dfbbd5a3fabccf172b78f0ac9015 upstream. Notice that the use of the bitwise OR operator '|' always leads to true in this particular case, which seems a bit suspicious due to the context in which this expression is being used. Fix this by using bitwise AND operator '&' instead. This bug was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Namhyung Kim Cc: Peter Zijlstra Cc: stable@vger.kernel.org Fixes: 6a6cd11d4e57 ("perf test: Add test for the sched tracepoint format fields") Link: http://lkml.kernel.org/r/20190122233439.GA5868@embeddedor Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Greg Kroah-Hartman --- tools/perf/tests/evsel-tp-sched.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/tools/perf/tests/evsel-tp-sched.c +++ b/tools/perf/tests/evsel-tp-sched.c @@ -17,7 +17,7 @@ static int perf_evsel__test_field(struct return -1; } - is_signed = !!(field->flags | TEP_FIELD_IS_SIGNED); + is_signed = !!(field->flags & TEP_FIELD_IS_SIGNED); if (should_be_signed && !is_signed) { pr_debug("%s: \"%s\" signedness(%d) is wrong, should be %d\n", evsel->name, name, is_signed, should_be_signed);