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,URIBL_BLOCKED,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 03991C433E1 for ; Tue, 23 Jun 2020 00:38:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CEC5120842 for ; Tue, 23 Jun 2020 00:38:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592872716; bh=9I5Y27ZTrQcqUy9STDR0VsTK0ZGdaJ7BMzoY/xb3kxY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=VwoVxBhxRg4noXjE3w/EeBjf+7BxgBnTp06rfNvqBIHPl3suPABhPG/0BGVmyQGs1 PJKScJtofb/63wZ9wRwcR5AzOtZbR097mPEzmgkKdqWzhoaOCqpAZlKKcpn14GjugH 5sKzN+mEpqNHtguzfy3EM3bWAvVI7maw2mGXiEnM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731874AbgFWAig (ORCPT ); Mon, 22 Jun 2020 20:38:36 -0400 Received: from mail.kernel.org ([198.145.29.99]:33634 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732160AbgFWAh5 (ORCPT ); Mon, 22 Jun 2020 20:37:57 -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 5C6E32145D; Tue, 23 Jun 2020 00:37:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592872677; bh=9I5Y27ZTrQcqUy9STDR0VsTK0ZGdaJ7BMzoY/xb3kxY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=q4Y/I3gbmY4zViJgTtXf10veRE6ew/UhIVsRqUgFvjAdj/74jNrsmF0S3jMN6S1UL oJibePoDe52q01F/iTo34EuGxKQZjFgC0a1Lfzyshd+TvQY2FlTG7dDr1NMK/dgRWn E5UF6zsv3HMnEPh5wqRaHBjAaHfm47gSFzcZ6NPg= 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 17/23] torture: Improve diagnostic for KCSAN-incapable compilers Date: Mon, 22 Jun 2020 17:37:46 -0700 Message-Id: <20200623003752.26872-17-paulmck@kernel.org> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20200623003731.GA26717@paulmck-ThinkPad-P72> References: <20200623003731.GA26717@paulmck-ThinkPad-P72> Sender: rcu-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org From: "Paul E. McKenney" Using --kcsan when the compiler does not support KCSAN results in this: :CONFIG_KCSAN=y: improperly set :CONFIG_KCSAN_REPORT_ONCE_IN_MS=100000: improperly set :CONFIG_KCSAN_VERBOSE=y: improperly set :CONFIG_KCSAN_INTERRUPT_WATCHER=y: improperly set Clean KCSAN run in /home/git/linux-rcu/tools/testing/selftests/rcutorture/res/2020.06.16-09.53.16 This is a bit obtuse, so this commit adds checks resulting in this: :CONFIG_KCSAN=y: improperly set :CONFIG_KCSAN_REPORT_ONCE_IN_MS=100000: improperly set :CONFIG_KCSAN_VERBOSE=y: improperly set :CONFIG_KCSAN_INTERRUPT_WATCHER=y: improperly set Compiler or architecture does not support KCSAN! Did you forget to switch your compiler with --kmake-arg CC=? Suggested-by: Marco Elver Signed-off-by: Paul E. McKenney Acked-by: Marco Elver --- tools/testing/selftests/rcutorture/bin/kvm-recheck.sh | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh index 357899c..840a467 100755 --- a/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh +++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh @@ -44,7 +44,8 @@ do then echo QEMU killed fi - configcheck.sh $i/.config $i/ConfigFragment + configcheck.sh $i/.config $i/ConfigFragment > $T 2>&1 + cat $T if test -r $i/Make.oldconfig.err then cat $i/Make.oldconfig.err @@ -73,7 +74,11 @@ do done if test -f "$rd/kcsan.sum" then - if test -s "$rd/kcsan.sum" + if grep -q CONFIG_KCSAN=y $T + then + echo "Compiler or architecture does not support KCSAN!" + echo Did you forget to switch your compiler with '--kmake-arg CC='? + elif test -s "$rd/kcsan.sum" then echo KCSAN summary in $rd/kcsan.sum else -- 2.9.5