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 E5E27C61DA0 for ; Wed, 25 Jan 2023 09:32:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235285AbjAYJcd (ORCPT ); Wed, 25 Jan 2023 04:32:33 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48782 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234833AbjAYJcb (ORCPT ); Wed, 25 Jan 2023 04:32:31 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4241614EAC; Wed, 25 Jan 2023 01:32:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=JUR7w1G00Y0He4cAcVm9pPAQ/J74+kmIZA1AkSH0LVI=; b=Jipq/atGXkJrsmihydbB2nRZuP TXJJ3h6XChv1qV8eZz0SZdLDq5Zk7Al6vKyvwAgn4AsdU0LPunyJ1XUjQSfgr3kAvVw6m2UjIJps4 KTMooqSyFrvV/rQLezYZ5jvPHmObPM6xbWlf/+VCvxU9TG64pSmvl3IeDchh3K574VZ4uBb7zruse Jzmlse0nCBAITVsQO3y/lq90ZAzgPMl4Rm2NYqdmfBmZUZrGq8awQgfCdsq0POmEtDzlAptk/Tn32 4NXfmBFTCQqr9AQjPC8ZlAjxFihVSqykRw6OmTHtlB4daHRK0zfUSCPIb4aalZhV+ozgrQCnS/Gdt i/mdvvGw==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1pKc87-005oRU-4Q; Wed, 25 Jan 2023 09:31:43 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id EEEBB3001E7; Wed, 25 Jan 2023 10:31:41 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id D86AA2C5B690E; Wed, 25 Jan 2023 10:31:41 +0100 (CET) Date: Wed, 25 Jan 2023 10:31:41 +0100 From: Peter Zijlstra To: Mark Rutland 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-kernel@vger.kernel.org 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.