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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7C5B0C433EF for ; Wed, 19 Jan 2022 04:47:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1351545AbiASEq4 (ORCPT ); Tue, 18 Jan 2022 23:46:56 -0500 Received: from ams.source.kernel.org ([145.40.68.75]:49820 "EHLO ams.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351512AbiASEqy (ORCPT ); Tue, 18 Jan 2022 23:46:54 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 0DC5AB80DF5; Wed, 19 Jan 2022 04:46:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B8052C004E1; Wed, 19 Jan 2022 04:46:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642567609; bh=Vpa9UuAY53sQIkH/qLs8hCTyPnrtBhfyRRMGetWd0zg=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=n1S2mhG5HUzH/xvBwCylu2g6ulBxcKwrqQNkK0S2DMLjcvVBNl4ByXnN+lmrzhE5k qi3keMvXu1CwrE32b2SggbjpwyRYpG6i/7Mas9aSF3tS+yMfzirvC+WO3HevV05bvt 2aUV/iltmmIJwrQ8sZ7gZ8s9AKN+/Oq5KL/qjNmjyyQ7ZKelJCTqmskSTC2y63e04p sS+0xHsmxutvuhn9ZA8PI9qEyINVq2VdYBLQhtbKNp5I6s7CQI0Kmk9NDFfes4iNc4 UylgS0qZs9G3QZ+E+R0cQuAmg3CJgqcgKCMxAHBOYUMM5oORGHm38FIdqqmGmkiAqs 18gIDCgfPVkkA== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id 694C35C0A21; Tue, 18 Jan 2022 20:46:49 -0800 (PST) Date: Tue, 18 Jan 2022 20:46:49 -0800 From: "Paul E. McKenney" To: Zhouyi Zhou Cc: Paul Menzel , Josh Triplett , rcu , linux-kselftest@vger.kernel.org, LKML Subject: Re: Problems with rcutorture on ppc64le: allmodconfig(2) and other failures Message-ID: <20220119044649.GL947480@paulmck-ThinkPad-P17-Gen-1> Reply-To: paulmck@kernel.org References: <36bd91e4-8eda-5677-7fde-40295932a640@molgen.mpg.de> <20220118172904.GG947480@paulmck-ThinkPad-P17-Gen-1> <20220118234656.GA3120763@paulmck-ThinkPad-P17-Gen-1> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jan 19, 2022 at 10:07:42AM +0800, Zhouyi Zhou wrote: > Thanks Paul for looking into this > > On Wed, Jan 19, 2022 at 7:46 AM Paul E. McKenney wrote: > > > > On Tue, Jan 18, 2022 at 09:29:04AM -0800, Paul E. McKenney wrote: > > > On Tue, Jan 18, 2022 at 08:56:24AM +0100, Paul Menzel wrote: > > > > Dear Zhouyi, > > > > > > > > > > > > Thank you for your quick response. > > > > > > > > > > > > Am 18.01.22 um 08:34 schrieb Zhouyi Zhou: > > > > > > > > > I have studied the rcu torture test recently. I am also interested in > > > > > this topic. > > > > > But I can't open > > > > > [1]: https://owww.molgen.mpg.de/~pmenzel/allmodconf-Make.out.txt > > > > > [2]: https://owww.molgen.mpg.de/~pmenzel/rcutorture-log.txt > > > > > > > > Sorry, about that. I should have checked those. I had put them into a > > > > directory: > > > > > > > > [1]: https://owww.molgen.mpg.de/~pmenzel/rcutorture/allmodconf-Make.out.txt > > > > [2]: https://owww.molgen.mpg.de/~pmenzel/rcutorture/rcutorture-log.txt > > > > > > > > I am going to try to test your suggestions at the end of the day. > > > > > > On x86 rcutorture builds successfully. However, allmodconfig > > > on semi-recent -next got me "Can't open perl script > > > "./usr/include/headers_check.pl": No such file or directory". > > > Which might well be a local problem or might well be fixed by now. > > > > Not fixed as of next-20220118. Chasing it down... ;-) > I can do allmodconfig on -next, > $git describe > next-20220118 > $tools/testing/selftests/rcutorture/bin/torture.sh --duration 10 > --- tools/testing/selftests/rcutorture/bin/torture.sh --duration 10 > --- Results directory: 2022.01.19-09.14.39-torture > $ ps -aux|grep qemu-system > zzy 470309 773 0.3 1876544 153936 pts/0 Sl+ 09:55 31:27 > qemu-system-x86_64 -enable-kvm -nographic -smp 16 -net none -machine > q35,accel=kvm -cpu kvm64 -serial > file:/tmp/linux-next/tools/testing/selftests/rcutorture/res/2022.01.19-09.14.39-torture/results-rcutorture/TREE03/console.log > -m 512 -kernel /tmp/linux-next/tools/testing/selftests/rcutorture/res/2022.01.19-09.14.39-torture/results-rcutorture/TREE03/bzImage > -append debug_boot_weak_hash panic=-1 selinux=0 initcall_debug debug > console=ttyS0 rcupdate.rcu_cpu_stall_suppress_at_boot=1 > torture.disable_onoff_at_boot rcupdate.rcu_task_stall_timeout=30000 > rcutorture.onoff_interval=200 rcutorture.onoff_holdoff=30 > rcutree.gp_preinit_delay=12 rcutree.gp_init_delay=3 > rcutree.gp_cleanup_delay=3 rcutree.kthread_prio=2 threadirqs > tree.use_softirq=0 rcutorture.n_barrier_cbs=4 > rcutorture.stat_interval=15 rcutorture.shutdown_secs=420 > rcutorture.test_no_idle_hz=1 rcutorture.verbose=1 > zzy 755865 0.0 0.0 17676 2876 pts/2 S+ 09:59 0:00 > grep --color=auto qemu-system > $ ls -l vmlinux > -rwxrwxr-x 1 zzy zzy 69349872 1月 19 09:55 vmlinux > > Could you please try the following command ? > linux-next$ perl ./usr/include/headers_check.pl usr/include x86 > usr/include/rdma/hfi/hfi1_user.h > linux-next$ echo $? > 0 > The headers_check.pl in linux-next > (https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/usr/include/headers_check.pl) > is used to check the validity of head files in ./usr/include I am currently bisecting, but once that finishes I will give this a try, thank you! Thanx, Paul > > > Either way, it looks like I need to upgrade the torture.sh script's > > > checks for failed builds. Thank you for reporting this! > > > > Does this make torture.sh more reliably report build failures? > I studied this commit line by line several times and benefited a lot. Thank you! > > > > Thanx, Paul > > > > ------------------------------------------------------------------------ > > > > commit 0d302830515307ceb58e89d5fb91e81b6d22e0bf > > Author: Paul E. McKenney > > Date: Tue Jan 18 15:40:49 2022 -0800 > > > > torture: Make kvm-find-errors.sh notice missing vmlinux file > > > > Currently, an obtuse compiler diagnostic can fool kvm-find-errors.sh > > into believing that the build was successful. This commit therefore > > adds a check for a missing vmlinux file. > > > > Link: https://lore.kernel.org/lkml/36bd91e4-8eda-5677-7fde-40295932a640@molgen.mpg.de/ > > Reported-by: Paul Menzel > > Signed-off-by: Paul E. McKenney > > > > diff --git a/tools/testing/selftests/rcutorture/bin/kvm-find-errors.sh b/tools/testing/selftests/rcutorture/bin/kvm-find-errors.sh > > index 2e9e9e2eedb69..7d3e11a6b8290 100755 > > --- a/tools/testing/selftests/rcutorture/bin/kvm-find-errors.sh > > +++ b/tools/testing/selftests/rcutorture/bin/kvm-find-errors.sh > > @@ -30,10 +30,15 @@ editor=${EDITOR-vi} > > files= > > for i in ${rundir}/*/Make.out > > do > > + scenariodir="`dirname $i`" > > if egrep -q "error:|warning:|^ld: .*undefined reference to" < $i > > then > > egrep "error:|warning:|^ld: .*undefined reference to" < $i > $i.diags > > files="$files $i.diags $i" > > + elif ! test -f ${scenariodir}/vmlinux > > + then > > + echo No ${scenariodir}/vmlinux file > $i.diags > > + files="$files $i.diags $i" > > fi > > done > > if test -n "$files" > Thanks > Zhouyi