From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E023D23E34C for ; Thu, 16 Oct 2025 19:07:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.92.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760641629; cv=none; b=OVN2fie+Z7Pmdk8DZjkppEiTYY3WyxHtH3KV/tx86gnAH1cE2ihZsamTvaweQRWaHBNZt7vFMnp7rgz2NO2Cz2s2PI3m2DqfW/nJU/tZogoTKmGc5FQEkX7M/DyA3WgQ0etyvA0FPwzT4LxKwn416HAlP5AvT4U3G4rWhxd2Kwc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760641629; c=relaxed/simple; bh=xQK2os/eeIZl048ps4wSDRHIjD3SlzL6wi1dORI4+4c=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=YHaUrp4TbHGUyyccDseVjD1MgsXh4Zrp4g/7vouBupzUK+eS3iEuw98e4MrYhh5Nf9ziI9Cy/sa5pZs0X37zTT9wWuFo/HHQp0Bk/7Ni1KjW3w5C17FCCVZJD1ulDLV8QBdF6N1SmFkJDZ7fZZCqMvMjH9pwlOXvAxLFcDQH0lY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=OX9fJawU; arc=none smtp.client-ip=90.155.92.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="OX9fJawU" 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=kEqZzwVbVDtLlhNssXWczLoREFuVa/SbradjrL9usdQ=; b=OX9fJawUMKwZFQUcNxlDns226m UZNOWK2//fIDXuP06+oicxJ8yNP78lTO6MiGjIx0cCOIofvTTSRU8RWqT0nDA2yYjlTi8mPUVtEvY VvJgfISZkpPf7d1ci13PdlbiBH9H+mx7pAbiUd4ccSSy+biYVy8udF9yPPRB9XQQXcrr32GAuWKr0 0mKeVKZ3XFepu7q4vyWd21TWqJToA2CcfihAcgx01aOu/0HM+nn6LtX+zBmpUcodHfWc+tzmkfJWv yShQzUD7fsGWXb6By9BHfu+1o5vXcUxJeAhLiOmQsUW3pHWm75r3MltK6t1o3kYSCUSehYDd5wIHx q6tE7BPQ==; Received: from 77-249-17-252.cable.dynamic.v4.ziggo.nl ([77.249.17.252] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.98.2 #2 (Red Hat Linux)) id 1v9TJK-00000006yCM-13A9; Thu, 16 Oct 2025 19:06:51 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id CB1B6300220; Thu, 16 Oct 2025 21:06:49 +0200 (CEST) Date: Thu, 16 Oct 2025 21:06:49 +0200 From: Peter Zijlstra To: Catalin Marinas Cc: Cruz Zhao , mingo@redhat.com, will@kernel.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, linux-kernel@vger.kernel.org Subject: Re: [BUG RESEND] Kernel panic in update_cfs_rq_h_load() on aarch64 Message-ID: <20251016190649.GI3289052@noisy.programming.kicks-ass.net> References: <20251013071820.1531295-1-CruzZhao@linux.alibaba.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Thu, Oct 16, 2025 at 06:15:25PM +0100, Catalin Marinas wrote: > On Mon, Oct 13, 2025 at 03:17:58PM +0800, Cruz Zhao wrote: > > Hi, all. We are encountering a kernel panic in our production environment > > running Linux kernel version 5.10.134, on aarch64 architecture (aarch64 > > architecture only). > > > > Summary: > > - Kernel Version: 5.10.134 > > That's a pretty old kernel though still maintained LTS. Can you > reproduce this with the latest 5.10.x? FWIW, there is this thread: https://lkml.kernel.org/r/bc08fcd528bad11311cd25de37962eb1ce0e7879.1760530739.git.peng_wang@linux.alibaba.com