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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4A98AE68974 for ; Thu, 31 Oct 2024 11:01:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=l6RrESpk4DuiFuA8FQu7bFWYRqaOtox3Ncu15dz32HM=; b=S9Da3D/Dp9HraZO3LfzpwFxg6S UuXByEVaiwqcs8YwefdgqEBRJuTlyUtGCC7w/2ko24UqRH4Hzyg4RGTdLwYgFXy3QYUWL4h84XLOQ AVjUyDCHXIOIRFn/YNQw47PNdwQBqt4ZXHUoNjOKE7RXa7+H4WdJTxPO+nxkWkL6KgOpi0Yq+5Ok8 sz7mzAVewqMJNQ7Bz9IwBcz7tERuxI70M09uWkyZ3tFmEZVUBrM/rkdq5T+yfoBkrDqK3dGvq99Gl zQSJ+TlooHap2pn/GxZyrZAn0L+y6WVeNxdYqj2dXn0sbBkKOVRmMbdX7UF5Qynsp3mpW3fhcrtds OteEylPw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t6SvE-00000003Kim-0MZp; Thu, 31 Oct 2024 11:01:00 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t6Rvu-00000003A52-0cPR for linux-arm-kernel@bombadil.infradead.org; Thu, 31 Oct 2024 09:57:38 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; 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=l6RrESpk4DuiFuA8FQu7bFWYRqaOtox3Ncu15dz32HM=; b=pdejbnPNd+ry1fv2Q+mbQJyLa/ Ajj7nYjSdxivFn7ecgv6ZUWhGFUwZuLXz+90cv3EXki8VF2livu6KZeJKOS9F9sgiaIwtBrphhHa9 kS8AZfzz5zwLtCOgdGgF0OzdaC6Cocya8B8np46GgM8IcmwnjLebabpP6cQC9OAwqacfTujd+LYtQ H9PVYUdlctreW3xaz5kuP5nwWShecK7rzImGPDzo1KMpivr2MsDgqhA/LdCIH61f1QbXkK3PSl5qu 5Ja25sX4o9OR1AHo4hIsPeB77RNxuJ9VsLJlKzvTJHGXdnbhbVbhF79sQp+gfYVcb7v/FLThX7FOE DC3O+KvA==; Received: from nyc.source.kernel.org ([147.75.193.91]) by desiato.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t6Rvr-0000000AQoy-1GEk for linux-arm-kernel@lists.infradead.org; Thu, 31 Oct 2024 09:57:37 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 6A248A43E7B; Thu, 31 Oct 2024 09:55:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 983B5C4CED5; Thu, 31 Oct 2024 09:57:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730368653; bh=Y/ZKdGs9HB+eMN46LQEMN2crILjud+xOTPZjCMfvnbc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=G58e/nrB469sgVmF0ZG3dxQLcv+W1uDFu/FILhXfCLoJCoj/5k4VoyFTbNpZaA6uf i+B4YT0rcIjWmzT/+f1HVjm+iwSZNelh/bgrflRm4IBECGl9hN2odDSmu792hsR7Z8 bY7jzfHc3H6ZhAlNdXLEimDrPw86vil0VEndvwRCPVvnygr7DN6Mq9+9KD8rSk+Zir 0c7TnXcYAX3tKBKOqlJJGuoAYYu9GC075Ki4VpLu4BRSGf4Ua0VjatKXc8ldILkPF1 5OSIdvCI9y6kbLKpZE6XIMron+uMCYRUWz0GkX5st4dnKSgs3SOWVeTndhpslO+/de 3Z8LVQ3W2uU1w== Date: Thu, 31 Oct 2024 10:57:31 +0100 From: Frederic Weisbecker To: Thomas Gleixner Cc: Naresh Kamboju , Linux ARM , open list , lkft-triage@lists.linaro.org, Linux Regressions , rcu , linux-clk , Arnd Bergmann , Dan Carpenter , Anna-Maria Behnsen , Mark Brown , Alex =?iso-8859-1?Q?Benn=E9e?= , Peter Maydell , "Paul E. McKenney" , Vincent Guittot , Anders Roxell , Aishwarya TCV Subject: Re: next-20241031: kernel/time/clockevents.c:455 clockevents_register_device Message-ID: References: <87zfmkwqui.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87zfmkwqui.ffs@tglx> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241031_095735_621091_A7F31AD0 X-CRM114-Status: GOOD ( 16.20 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Oct 31, 2024 at 10:42:45AM +0100, Thomas Gleixner wrote: > On Thu, Oct 31 2024 at 14:10, Naresh Kamboju wrote: > > The QEMU-ARM64 boot has failed with the Linux next-20241031 tag. > > The boot log shows warnings at clockevents_register_device and followed > > by rcu_preempt detected stalls. > > > > However, the system did not proceed far enough to reach the login prompt. > > The fvp-aemva, Qemu-arm64, Qemu-armv7 and Qemu-riscv64 boot failed. > > > > Please find the incomplete boot log links below for your reference. > > The Qemu version is 9.0.2. > > <4>[ 0.220657] WARNING: CPU: 1 PID: 0 at kernel/time/clockevents.c:455 > > clockevents_register_device (kernel/time/clockevents.c:455 > > <4>[ 0.225218] clockevents_register_device+0x170/0x188 P > > <4>[ 0.225367] clockevents_config_and_register+0x34/0x50 L > > <4>[ 0.225487] clockevents_config_and_register (kernel/time/clockevents.c:523) > > <4>[ 0.225553] arch_timer_starting_cpu > > (drivers/clocksource/arm_arch_timer.c:1034) > > <4>[ 0.225602] cpuhp_invoke_callback (kernel/cpu.c:194) > > <4>[ 0.225649] __cpuhp_invoke_callback_range (kernel/cpu.c:965) > > <4>[ 0.225691] notify_cpu_starting (kernel/cpu.c:1604) > > That's obvious what happens here. notify_cpu_starting() is invoked > before the CPU is marked online, which triggers the new check in > clockevents_register_device(). > > I removed the warning and force pushed the fixed up branch, so that > should be gone by tomorrow. Ah, phew! Thanks. > > Thanks, > > tglx >