From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.16]) (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 562CA1BF53; Wed, 17 Apr 2024 18:54:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713380075; cv=none; b=oVw+zWT8WZsGWF4D4N0WtmdrJfv9UWZgN1s6oVgEQoj0/FrTQIyfxbM7JiuaKOVKaQZ4PdGW/jMzt8MUsaeh7WR2URzrEmnp8iEV8n72FGBJI67ksM6RW0KI/ndNeb/TCIZ0vUCZp6AVWpD8knf/5+2bghhk3KMKN6PyRXivBFs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713380075; c=relaxed/simple; bh=hyCQyZHf2ncj/nXm1VIUe6nfA7at8m+jSmVswf1Wnnc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Te3w6j4KwKSFIyQgchhhFHKi7vKVtKS0/7IAZpp0kyn9SevL+HHHFAyhXQ7N2CsS42TI/azF+f0/f7WRKqtLrIQIl6VPP3sx3fmykbHPXGZAksEIYwwoeb8g725CSTE7heQ7C9eMD3JF3qAE67FjnyHZsqOrPKFE0kpLw0mUKS0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=IQ+lCLWe; arc=none smtp.client-ip=192.198.163.16 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="IQ+lCLWe" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1713380074; x=1744916074; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=hyCQyZHf2ncj/nXm1VIUe6nfA7at8m+jSmVswf1Wnnc=; b=IQ+lCLWervtdqjtpe7jjl3H1R/H5KCO2y8b8UEJQGHeZxCAda5G/dSY/ JXG/M9GMA29CxzYYHADASFyKQFpedY1i0RM+Q6cUc1OoBIz3TvF+NW/JR WW21asAuwNaRpRyPKXTPG2xLjaQ0RA8ZwLHu0Dw+Nv5ylV5I+xaOdFd/G 7kaJGFA9fdooh+Az9K1gmPksu157Jip8m9IN1kfYGiagI2phjVzv6UxnL ILGHuecXlsX2cFlCeDfydNkghvm7Gsof8WnvsF7XS9cKCTOQ4v4VY+Y0M segmovyGeSXeyYm14dkWQyw1QVsApxCuat7gPzGZWfPwr22NcAt3H4FW5 w==; X-CSE-ConnectionGUID: jiVHNqO2Q4CiwlJHlhB/Qw== X-CSE-MsgGUID: j5sM6DohQGCcEVvzZuqtVw== X-IronPort-AV: E=McAfee;i="6600,9927,11046"; a="9441220" X-IronPort-AV: E=Sophos;i="6.07,209,1708416000"; d="scan'208";a="9441220" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Apr 2024 11:54:34 -0700 X-CSE-ConnectionGUID: PsnZ84biQUCxtewMM+gp4g== X-CSE-MsgGUID: IIUXUP1qTau8TFgvTNTJ+Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,209,1708416000"; d="scan'208";a="22729937" Received: from wangc3-mobl.amr.corp.intel.com (HELO desk) ([10.209.4.219]) by orviesa009-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Apr 2024 11:54:33 -0700 Date: Wed, 17 Apr 2024 11:54:27 -0700 From: Pawan Gupta To: Linux regressions mailing list Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, Dave Hansen , kvm@vger.kernel.org, kernel test robot Subject: Re: [linus:master] [x86/bugs] 6613d82e61: general_protection_fault:#[##] Message-ID: <20240417185427.4msriy5rrt5gej2x@desk> References: <202403281553.79f5a16f-lkp@intel.com> <20240328211742.bh2y3zsscranycds@desk> <8c77ccfd-d561-45a1-8ed5-6b75212c7a58@leemhuis.info> 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: <8c77ccfd-d561-45a1-8ed5-6b75212c7a58@leemhuis.info> On Sun, Apr 14, 2024 at 08:41:52AM +0200, Linux regression tracking (Thorsten Leemhuis) wrote: > Hi, Thorsten here, the Linux kernel's regression tracker. > > On 28.03.24 22:17, Pawan Gupta wrote: > > On Thu, Mar 28, 2024 at 03:36:28PM +0800, kernel test robot wrote: > >> compiler: clang-17 > >> test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G > >> > >> If you fix the issue in a separate patch/commit (i.e. not just a new version of > >> the same patch/commit), kindly add following tags > >> | Reported-by: kernel test robot > >> | Closes: https://lore.kernel.org/oe-lkp/202403281553.79f5a16f-lkp@intel.com > > TWIMC, a user report general protection faults with dosemu that were > bisected to a 6.6.y backport of the commit that causes the problem > discussed in this thread (6613d82e617dd7 ("x86/bugs: Use ALTERNATIVE() > instead of mds_user_clear static key")). > > User compiles using gcc, so it might be a different problem. Happens > with 6.8.y as well. > > The problem occurs with x86-32 kernels, but strangely only on some of > the x86-32 systems the reporter has (e.g. on some everything works > fine). Makes me wonder if the commit exposed an older problem that only > happens on some machines. > > For details see https://bugzilla.kernel.org/show_bug.cgi?id=218707 > Could not CC the reporter here due to the bugzilla privacy policy; if > you want to get in contact, please use bugzilla. Sorry for the late response, I was off work. I will look into this and get back. I might need help reproducing this issue, but let me first see if I can reproduce with the info in the bugzilla.