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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 077FFC2BB85 for ; Wed, 15 Apr 2020 17:33:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DF5E32076D for ; Wed, 15 Apr 2020 17:33:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586971997; bh=NBTRHQwpI7VXKcRnKdEPYNRajSRwZhec2cc7h/2DMFI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=RFRdvo/w9iMJdbtPleF+T+Zxf+L6QZ//bz+O1XwxjzVVpXH/Bt0pHPsEJD4EKg4+e Mlo1Jk+tmP2ghr5Xiuo7qffvYKSWMz2ELu6giikmfZGSg8GX8KiBYjYDx/P1pKJT5o Z8Zm/gZmECyW9pp9EYY2m74SKdr6FXzm+HIAIhdI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2411306AbgDORdQ (ORCPT ); Wed, 15 Apr 2020 13:33:16 -0400 Received: from mail.kernel.org ([198.145.29.99]:46300 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2411129AbgDORbH (ORCPT ); Wed, 15 Apr 2020 13:31:07 -0400 Received: from paulmck-ThinkPad-P72.home (50-39-105-78.bvtn.or.frontiernet.net [50.39.105.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EC7022166E; Wed, 15 Apr 2020 17:31:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586971865; bh=NBTRHQwpI7VXKcRnKdEPYNRajSRwZhec2cc7h/2DMFI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BsOLXdPU4wF6JQAVNEfprum5HraFwCgzukUOc5Rz7U4SaJX162GW8NevpyFH7h96Q 03+jBryn3rttYxGWeoUDudmKKWeaiFSDnKLH5OoRMNy3ABVOSf2m/FbgtvOsCj0YUo CUPXEdQ63c6cuLnnpVA4l36/huZNifR4xw8xXmIA= From: paulmck@kernel.org To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com, mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org, "Paul E. McKenney" Subject: [PATCH tip/core/rcu 10/18] torture: Make --kcsan argument also create a summary Date: Wed, 15 Apr 2020 10:30:52 -0700 Message-Id: <20200415173100.9927-10-paulmck@kernel.org> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20200415173037.GA9768@paulmck-ThinkPad-P72> References: <20200415173037.GA9768@paulmck-ThinkPad-P72> Sender: rcu-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org From: "Paul E. McKenney" The KCSAN tool emits a great many warnings for current kernels, for example, a one-hour run of the full set of rcutorture scenarios results in no fewer than 3252 such warnings, many of which are duplicates or are otherwise closely related. This commit therefore introduces a kcsan-collapse.sh script that maps these warnings down to a set of function pairs (22 of them given the 3252 individual warnings), placing the resulting list in decreasing order of frequency of occurrence into a kcsan.sum file. If any KCSAN warnings were produced, the pathname of this file is emitted at the end of the summary of the rcutorture runs. Signed-off-by: Paul E. McKenney --- .../selftests/rcutorture/bin/kcsan-collapse.sh | 22 ++++++++++++++++++++++ .../selftests/rcutorture/bin/kvm-recheck.sh | 9 +++++++++ tools/testing/selftests/rcutorture/bin/kvm.sh | 1 + 3 files changed, 32 insertions(+) create mode 100755 tools/testing/selftests/rcutorture/bin/kcsan-collapse.sh diff --git a/tools/testing/selftests/rcutorture/bin/kcsan-collapse.sh b/tools/testing/selftests/rcutorture/bin/kcsan-collapse.sh new file mode 100755 index 0000000..e5cc6b2 --- /dev/null +++ b/tools/testing/selftests/rcutorture/bin/kcsan-collapse.sh @@ -0,0 +1,22 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0+ +# +# If this was a KCSAN run, collapse the reports in the various console.log +# files onto pairs of functions. +# +# Usage: kcsan-collapse.sh resultsdir +# +# Copyright (C) 2020 Facebook, Inc. +# +# Authors: Paul E. McKenney + +if test -z "$TORTURE_KCONFIG_KCSAN_ARG" +then + exit 0 +fi +cat $1/*/console.log | + grep "BUG: KCSAN: " | + sed -e 's/^\[[^]]*] //' | + sort | + uniq -c | + sort -k1nr > $1/kcsan.sum diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh index 0326f4a..736f047 100755 --- a/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh +++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh @@ -70,6 +70,15 @@ do fi fi done + if test -f "$rd/kcsan.sum" + then + if test -s "$rd/kcsan.sum" + then + echo KCSAN summary in $rd/kcsan.sum + else + echo Clean KCSAN run in $rd + fi + fi done EDITOR=echo kvm-find-errors.sh "${@: -1}" > $T 2>&1 ret=$? diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh index 34b368d..75ae8e3 100755 --- a/tools/testing/selftests/rcutorture/bin/kvm.sh +++ b/tools/testing/selftests/rcutorture/bin/kvm.sh @@ -472,6 +472,7 @@ echo echo echo " --- `date` Test summary:" echo Results directory: $resdir/$ds +kcsan-collapse.sh $resdir/$ds kvm-recheck.sh $resdir/$ds ___EOF___ -- 2.9.5