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 16D16E92FF9 for ; Fri, 6 Oct 2023 09:21:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231425AbjJFJVd (ORCPT ); Fri, 6 Oct 2023 05:21:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51884 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231361AbjJFJVa (ORCPT ); Fri, 6 Oct 2023 05:21:30 -0400 Received: from mx.exactcode.de (mx.exactcode.de [144.76.154.42]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AF4DB93 for ; Fri, 6 Oct 2023 02:21:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=exactco.de; s=x; h=To:References:Message-Id:Content-Transfer-Encoding:Cc:Date:In-Reply-To:From:Subject:Mime-Version:Content-Type; bh=gg4F1C7Bsnu8VL38dBFamcZXf6mHSEPhxMJxJeziYtc=; b=eyMJ9Yd+IKSVAouTHCd188prtAeyCSj0j3As3xau7nYPE7vjK/u065XSpsnBqfQzGLX+5UsjvQFzRAZfluQVewIAdAZPmoBGdtsHW4RcX18cm9m5otHGMKFoOp+sjR9nJHAY8YIrFg0FCiaNmazHn767apxv1ln30Hm8ENEdVAE=; Received: from exactco.de ([90.187.5.221]) by mx.exactcode.de with esmtp (Exim 4.82) (envelope-from ) id 1qoh24-0000nQ-DB; Fri, 06 Oct 2023 09:22:04 +0000 Received: from [192.168.2.109] (helo=smtpclient.apple) by exactco.de with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.86_2) (envelope-from ) id 1qoh34-0001JV-Sg; Fri, 06 Oct 2023 09:23:07 +0000 Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3731.400.51.1.1\)) Subject: Re: [RFC] AMD Zen4 CPU bug? Spurious SMT Sibling Invalid Opcode Speculation From: =?utf-8?Q?Ren=C3=A9_Rebe?= In-Reply-To: <20231004222511.GHZR3mR/oNFZuJGB9P@fat_crate.local> Date: Fri, 6 Oct 2023 11:21:13 +0200 Cc: linux-kernel@vger.kernel.org, x86@kernel.org Content-Transfer-Encoding: quoted-printable Message-Id: <797F7A00-541E-4333-B653-1120DF5C56B1@exactcode.com> References: <20231004222511.GHZR3mR/oNFZuJGB9P@fat_crate.local> To: Borislav Petkov X-Mailer: Apple Mail (2.3731.400.51.1.1) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, > On 5. Oct 2023, at 00:25, Borislav Petkov wrote: >=20 > On Wed, Oct 04, 2023 at 05:29:32PM +0200, Ren=C3=A9 Rebe wrote: >> during cross compiling our =E2=80=9CEmbedded=E2=80=9D Linux = Distribution T2 (https://t2sde.org) I observers some random illegal = instruction build errors since we got ourselves a Ryzen 7950x on launch = day a year ago: >=20 > Thanks for reporting. I'm looking into it. Thank you Borislav, were you able to reproduce this on Zen 4 you have = access to? Thanks, Ren=C3=A9 -- ExactCODE GmbH, Lietzenburger Str. 42, DE-10789 Berlin http://exactcode.com | http://exactscan.com | http://ocrkit.com