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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 BEC30C433E1 for ; Mon, 17 Aug 2020 18:59:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9B71B20578 for ; Mon, 17 Aug 2020 18:59:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597690784; bh=A4X9IdiTBJ1xoQQLa2m88VESOr4Le8PIWGChoLy6KN4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=qVgyZvGmpJt5PfUzmjRujqKZOf49icOXBnYkiF0Gs1MVl3B/PeOe1MzLPeZhwpMWz niosFOTuEZZJA0VCqOBCaSjNC7veCN+3ACI8BwCkOm3z741TSTJxHNCz29KcQsgbBg hVBrPDF2k2Y/h0CXv5TxBOyMpD3jUycxTLWorelI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391870AbgHQS7m (ORCPT ); Mon, 17 Aug 2020 14:59:42 -0400 Received: from mail.kernel.org ([198.145.29.99]:60236 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730854AbgHQPsZ (ORCPT ); Mon, 17 Aug 2020 11:48:25 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.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 34D292065D; Mon, 17 Aug 2020 15:48:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597679304; bh=A4X9IdiTBJ1xoQQLa2m88VESOr4Le8PIWGChoLy6KN4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=w4v0QePhW/FuKy4KIz/DW5Tj2Q9tbg4jpqMD6whj9MNV45iVtuaebzA2awccC1qSF wxe2VKHA71CgzZ8nD7zAKRtShS4jylJjrYFdWyJm/0WzznVqTXK8sv9WDgLDcMbiuR O0BKkxffLL3mQg25rF+orfAktpSD4K4/qM8OjBXU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Kees Cook , Sasha Levin Subject: [PATCH 5.7 166/393] selftests/lkdtm: Reset WARN_ONCE to avoid false negatives Date: Mon, 17 Aug 2020 17:13:36 +0200 Message-Id: <20200817143827.671007285@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143819.579311991@linuxfoundation.org> References: <20200817143819.579311991@linuxfoundation.org> User-Agent: quilt/0.66 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 From: Kees Cook [ Upstream commit 4fccc8c0ff740e62343b6de38426a48b345b95f4 ] Since we expect to see warnings every time for many tests, just reset the WARN_ONCE flags each time the script runs. Fixes: 46d1a0f03d66 ("selftests/lkdtm: Add tests for LKDTM targets") Signed-off-by: Kees Cook Link: https://lore.kernel.org/r/20200625203704.317097-4-keescook@chromium.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- tools/testing/selftests/lkdtm/run.sh | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tools/testing/selftests/lkdtm/run.sh b/tools/testing/selftests/lkdtm/run.sh index ee64ff8df8f4d..8383eb89d88a9 100755 --- a/tools/testing/selftests/lkdtm/run.sh +++ b/tools/testing/selftests/lkdtm/run.sh @@ -8,6 +8,7 @@ # set -e TRIGGER=/sys/kernel/debug/provoke-crash/DIRECT +CLEAR_ONCE=/sys/kernel/debug/clear_warn_once KSELFTEST_SKIP_TEST=4 # Verify we have LKDTM available in the kernel. @@ -67,6 +68,11 @@ cleanup() { } trap cleanup EXIT +# Reset WARN_ONCE counters so we trip it each time this runs. +if [ -w $CLEAR_ONCE ] ; then + echo 1 > $CLEAR_ONCE +fi + # Save existing dmesg so we can detect new content below dmesg > "$DMESG" -- 2.25.1