From patchwork Wed Sep 9 21:17:00 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kees Cook X-Patchwork-Id: 11766251 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AA6CB618 for ; Wed, 9 Sep 2020 21:17:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8D00B21D46 for ; Wed, 9 Sep 2020 21:17:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="hdEHm7z6" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726642AbgIIVRL (ORCPT ); Wed, 9 Sep 2020 17:17:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44782 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726408AbgIIVRJ (ORCPT ); Wed, 9 Sep 2020 17:17:09 -0400 Received: from mail-pf1-x444.google.com (mail-pf1-x444.google.com [IPv6:2607:f8b0:4864:20::444]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DA4A3C061573 for ; Wed, 9 Sep 2020 14:17:08 -0700 (PDT) Received: by mail-pf1-x444.google.com with SMTP id l126so3287607pfd.5 for ; Wed, 09 Sep 2020 14:17:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=CCe3ziH+ElemTVm2NqfWzU9PRtLXI604MAgAcQj1O7c=; b=hdEHm7z6jg8LsyV0hWWKIoyb509W1HSRjJPTgb0RNsN9MIU/VeTM4XVD4fCgOlssvS 9aRXKuJu2OhmqVeFGdA/adLLrvq2aDyuOaON0YYTtPw8pgi5E4Rg7mqm4qmSHbGaXLR+ GrsPXAmMOKCjthtoQDoYmyNycqKI6tTEUmsI4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=CCe3ziH+ElemTVm2NqfWzU9PRtLXI604MAgAcQj1O7c=; b=olmhqawux7yeqMXZmC5K+BXbcTOXg1jjmBDa2ewFnQQ2InvUQxDbHnIZdJx5MFowBB EXiztU3GrMSgAy7VsCKHpleb4qdLGV61LRMnIpFMRq53Bk9uN9vEVf9Q6DyjoI8zB+X7 8YnSa4rjW7gI+Q6v1Il6AtFaCO9iMTojluaFjskttdA4zsPqQTM3lDeYmc3nYrBhiACM x141LeUx6dvD3F2w5AtoLBBsk6uSCcSHMM8IEUOHNqurt3/wPUTuHKeRBUAPclmuP9CX VE85fzSQKLD/9tsL1j8TgC0mzeeDq4RLenvW2G+a8VK0m0Zf/JffgKK3fh9RtWglv9xV uunQ== X-Gm-Message-State: AOAM532TIqUEMMX7RwMS6SUFki1atl8ebH4kN7rQkE/ub+PUNhuhDJgG YWEkwBHQYxR/hz1vFq1s91Zc4A== X-Google-Smtp-Source: ABdhPJy8UUmcbw02VQE4xwOZuH25tjtT7DN/IXk9ewpMdTyFfoUhn/F4CyZLiVVtN/bQK7eC+MFIjQ== X-Received: by 2002:a17:902:c149:: with SMTP id 9mr1381263plj.10.1599686228449; Wed, 09 Sep 2020 14:17:08 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id j19sm3601421pfi.51.2020.09.09.14.17.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Sep 2020 14:17:07 -0700 (PDT) From: Kees Cook To: Shuah Khan Cc: Kees Cook , Naresh Kamboju , linux-kselftest@vger.kernel.org, Joe Lawrence , Petr Mladek , Michael Ellerman , linux-kernel@vger.kernel.org Subject: [PATCH v2] selftests/lkdtm: Use "comm" instead of "diff" for dmesg Date: Wed, 9 Sep 2020 14:17:00 -0700 Message-Id: <20200909211700.2399399-1-keescook@chromium.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Instead of full GNU diff (which smaller boot environments may not have), use "comm" which is more available. Reported-by: Naresh Kamboju Cc: Shuah Khan Cc: linux-kselftest@vger.kernel.org Fixes: f131d9edc29d ("selftests/lkdtm: Don't clear dmesg when running tests") Signed-off-by: Kees Cook Acked-by: Shuah Khan --- v2: add --nocheck-order, thanks to Joe Lawrence v1: https://lore.kernel.org/lkml/202006261358.3E8AA623A9@keescook/ --- tools/testing/selftests/lkdtm/run.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/lkdtm/run.sh b/tools/testing/selftests/lkdtm/run.sh index 8383eb89d88a..bb7a1775307b 100755 --- a/tools/testing/selftests/lkdtm/run.sh +++ b/tools/testing/selftests/lkdtm/run.sh @@ -82,7 +82,7 @@ dmesg > "$DMESG" ($SHELL -c 'cat <(echo '"$test"') >'"$TRIGGER" 2>/dev/null) || true # Record and dump the results -dmesg | diff --changed-group-format='%>' --unchanged-group-format='' "$DMESG" - > "$LOG" || true +dmesg | comm --nocheck-order -13 "$DMESG" - > "$LOG" || true cat "$LOG" # Check for expected output