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 461D8C27C76 for ; Wed, 25 Jan 2023 09:36:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229884AbjAYJgT (ORCPT ); Wed, 25 Jan 2023 04:36:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50358 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234420AbjAYJgR (ORCPT ); Wed, 25 Jan 2023 04:36:17 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 5EA582201E; Wed, 25 Jan 2023 01:36:16 -0800 (PST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C2E4D4B3; Wed, 25 Jan 2023 01:36:57 -0800 (PST) Received: from FVFF77S0Q05N (unknown [10.57.9.209]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 2E0903F5A1; Wed, 25 Jan 2023 01:36:11 -0800 (PST) Date: Wed, 25 Jan 2023 09:36:08 +0000 From: Mark Rutland To: Peter Zijlstra Cc: mingo@kernel.org, will@kernel.org, boqun.feng@gmail.com, tglx@linutronix.de, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, seanjc@google.com, pbonzini@redhat.com, jgross@suse.com, srivatsa@csail.mit.edu, amakhalov@vmware.com, pv-drivers@vmware.com, rostedt@goodmis.org, mhiramat@kernel.org, wanpengli@tencent.com, vkuznets@redhat.com, boris.ostrovsky@oracle.com, rafael@kernel.org, daniel.lezcano@linaro.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-trace-kernel@vger.kernel.org, linux-pm@vger.kernel.org Subject: Re: [PATCH 0/6] A few cpuidle vs rcu fixes Message-ID: References: <20230123205009.790550642@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org On Wed, Jan 25, 2023 at 10:31:41AM +0100, Peter Zijlstra wrote: > On Tue, Jan 24, 2023 at 04:34:23PM +0000, Mark Rutland wrote: > > Hi Peter, > > > > On Mon, Jan 23, 2023 at 09:50:09PM +0100, Peter Zijlstra wrote: > > > 0-day robot reported graph-tracing made the cpuidle-vs-rcu rework go splat. > > > > Do you have a link toe the splat somewhere? > > > > I'm assuming that this is partially generic, and I'd like to make sure I test > > the right thing on arm64. I'll throw my usual lockdep options at the ftrace > > selftests... > > 0-day triggered this by running tools/testing/selftests/ftrace/ftracetest, > which is what I've been using to reproduce. > > If that don't work for you I can try and dig out the 0day email to see > if it has more details on. I had a go running those on arm64, but got different splats (as per my other replies), so I just wanted to see the backtraces and/or config to check I wasn't missing something due to CONFIG_* or arch differences. If you have the email to hand, that'd be great, but don't worry too much about it! Thanks, Mark.