From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.alien8.de (mail.alien8.de [65.109.113.108]) (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 2F4331F7575 for ; Wed, 1 Apr 2026 15:13:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=65.109.113.108 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775056397; cv=none; b=EH3KN+F8B3grIvClxsCOyaQ3YuYw0IkU0OzetETjUsmRuXwK7rValgKVm9X3uWjESLbCIY49T5k6typ6X0wjh58Up8Mw4fIn5Y2SAuMCifEIh7sLza+QQK+RkQV1JcoGApar21kmTL7tSKv03oVfWss8nU3oo2MlxdrY4fDwcMU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775056397; c=relaxed/simple; bh=+MdT3ZRCVSq/T6E2ZdDJf9Lct+k1yn+5QWER0U/YFRg=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=p6NI58F7AwpA1nC85UjY93I/+yijaRoaDORlvYIfcbPUczoeba3QAjbC85Jty6BQJhaGODxmj7wE+MlbVNYWVTk8l6bIhStiwcPsRKd/bk5PTQp/J1dQ7u13wqAFY+xaM8jA+7G54gAyHf11CsihHnBo1uJLDWX3ynyJSLSZvaw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=alien8.de; spf=pass smtp.mailfrom=alien8.de; dkim=pass (4096-bit key) header.d=alien8.de header.i=@alien8.de header.b=KvX/muy6; arc=none smtp.client-ip=65.109.113.108 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=alien8.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=alien8.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (4096-bit key) header.d=alien8.de header.i=@alien8.de header.b="KvX/muy6" Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTP id 29BC340E015B; Wed, 1 Apr 2026 15:13:00 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at mail.alien8.de Authentication-Results: mail.alien8.de (amavisd-new); dkim=pass (4096-bit key) header.d=alien8.de Received: from mail.alien8.de ([127.0.0.1]) by localhost (mail.alien8.de [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id XnvkGK74qf8R; Wed, 1 Apr 2026 15:12:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=alien8; t=1775056374; bh=LNEVuXfLD8OE2ATAqcSDtF1I79AKsDzlsmEYkHdOeGI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=KvX/muy6WtLamRlg1xogJs4etur4pW1e8g3JM7+lw3zV7JfqWMZNzjGsN0aBhYQIc lHmVCMrRTzJCjY4nXIIznlVNF4zuJlc9aTkg+FJo352McxCY+n5qXyR1BK9Gl7qzqd zENTOR6bFQlflYruSAJBq2s9UIsjy8P1zGjOG5R6WY7vq45DzCyKfa82GxA1e6CqSm 9Po7+5ZJ7wO08A+jVtSbmkM6fWGhhH+uNsxAZ5Ta6EX7wDrbEGQ03+eUXNQ86N3fOS 4ZAFY+lydTFRW1eSya3jAFSyctocfDUSHqiExhA+XwhktqlJEC9L2rAsJm8s2U8Mm+ s73jIVvP51vjqXLWDUS9ofP4BnKxzMmlEk4meY9FlywBKy2dcm+oku9Whq5j9bK/NM TS4LKmw342csRvvzrDr5luSYyHhHhNkjQgbvSWHuKyv3rT76sXpD/N1kBej9bo7jw+ zB3Gt3uIQrut0Zq+mk5MShSuVBu8kbz8jS4YFnUGG45mnoXprECHcPtMvgGmZ0q+r4 Z6NTMnuM3x0o9AIlLVIvpvuTg1AyfxafxVe4ETNaoceSsvCt1z/B1LS/qd16fCaC9P etOgtOSkOc8hGEW+VVZ6ofpEoGNBD5otQifFvudLygBgj5j7X4LOLuLFDcduI9TIIW zPTbBMAJl2GGTO0WoENyLDZg= Received: from zn.tnic (p5de8e020.dip0.t-ipconnect.de [93.232.224.32]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with UTF8SMTPSA id 7F2E940E0140; Wed, 1 Apr 2026 15:12:29 +0000 (UTC) Date: Wed, 1 Apr 2026 17:12:22 +0200 From: Borislav Petkov To: Thomas Gleixner Cc: Calvin Owens , Petr Mladek , linux-kernel@vger.kernel.org, arighi@nvidia.com, yaozhenguo1@gmail.com, tj@kernel.org, feng.tang@linux.alibaba.com, lirongqing@baidu.com, realwujing@gmail.com, hu.shengming@zte.com.cn, dianders@chromium.org, joel.granados@kernel.org, Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , Frederic Weisbecker , Anna-Maria Behnsen , x86@kernel.org Subject: Re: [BUG] Random hard lockup with userspace %ip on 7.0-rc5 Message-ID: <20260401151222.GFac011temJ44UVkJC@fat_crate.local> References: <87v7ejetl1.ffs@tglx> <875x6a913n.ffs@tglx> 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=utf-8 Content-Disposition: inline In-Reply-To: <875x6a913n.ffs@tglx> On Wed, Apr 01, 2026 at 05:01:00PM +0200, Thomas Gleixner wrote: > On Tue, Mar 31 2026 at 18:58, Calvin Owens wrote: > > On Wednesday 03/25 at 17:56 +0100, Thomas Gleixner wrote: > > The below userspace reproducer consistently triggers the hard lockup > > on two different machines with an AMD 7950X3D and an AMD 9950X3D CPU. Do those machines have the latest BIOS? -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette