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[2620:137:e000::1:20]) by mx.google.com with ESMTP id li14-20020a170903294e00b001b9ea592e75si1581876plb.265.2023.08.10.08.52.38; Thu, 10 Aug 2023 08:52:50 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@alien8.de header.s=alien8 header.b=VIndakUb; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234079AbjHJPOY (ORCPT + 99 others); Thu, 10 Aug 2023 11:14:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56568 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235548AbjHJPOX (ORCPT ); Thu, 10 Aug 2023 11:14:23 -0400 Received: from mail.alien8.de (mail.alien8.de [IPv6:2a01:4f9:3051:3f93::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 12C4090 for ; Thu, 10 Aug 2023 08:14:23 -0700 (PDT) Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTP id 740BA40E01A0; Thu, 10 Aug 2023 15:14:21 +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 Oh8NazHFxDwj; Thu, 10 Aug 2023 15:14:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=alien8; t=1691680458; bh=A6xFfUpRho6D8k1f+ST5DHr3WVBXqj26i9AmyFnvDuM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=VIndakUbhIA8ftcyjCcKuR7UKrZzgxv3j/NfOHXP5yzAakEz0bmUAYHfAjFQyJiRF DJffiujRk+blxEGGCB357omme2HbucAR3N/VRfChePtVGTTybpL8ovm15QAR4s2jIN +D1Y2ODJVghZ2BxSj9IziViwTaXCUbjw0A3qwqYvsfPDnXi0mue5P6Gw39wzY8KI1s g6+JvbsnsexHzZOPu34RNMIyguvm77ZR5bztabp66NgKs29IfE7mlfiTsP+f0XCocD fwbuxl7r4FeofsIKkox1u1tG+ElghM32k8WjK0r/EY3y7bhHUl/ZAhu/yTB1RcQuH1 Oj2pzBtJzrWsktDLdWD2/CmxWcK4qMPKhqgussRfn/jgTzAJw+hRzi/qUTTdf5GJdq UpC0ylmI7oKGk7h2YEaoHpIh+IXZi3yNuO/3Skd+jZf6zxzFBQaOtygW9NIuxIhFMA 4xh3d6o856MZAPzAneUePLIKQNyqq0Kv/BxpvtM/PJhk2+qtnmcdTaXUiJ45WCRNs/ PKPcB7qC2tOJMw6b1wtrMbGf4OwlVlQx+7IwQ9mYqv2+I2H3Ny1N1nyvDpOkpXP3Wc 7pKfm5I5NTQoDanHSsx4TPao4XN+Fat6MaJmVxqBtYJbdhDhri7BOwWYxnbjxdqCFz 2NFXUT+buiYIEguLNu6Up7Rs= Received: from zn.tnic (pd9530d32.dip0.t-ipconnect.de [217.83.13.50]) (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 ESMTPSA id 9BD6840E0185; Thu, 10 Aug 2023 15:14:14 +0000 (UTC) Date: Thu, 10 Aug 2023 17:14:10 +0200 From: Borislav Petkov To: Nathan Chancellor Cc: x86@kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev Subject: Re: Hang when booting guest kernels compiled with clang after SRSO mitigations Message-ID: <20230810151410.GNZNT+wn/cLBWiU6dO@fat_crate.local> References: <20230810013334.GA5354@dev-arch.thelio-3990X> <20230810081038.GAZNSbftb6DOgg/U7e@fat_crate.local> <20230810090835.GBZNSpE6tCw+Ci+9yh@fat_crate.local> <20230810101649.GA1795474@dev-arch.thelio-3990X> <20230810125122.GIZNTdSuFvA3Cjfexq@fat_crate.local> <20230810132706.GA3805855@dev-arch.thelio-3990X> <20230810133216.GKZNTm4KpohRR4gVsT@fat_crate.local> <20230810134056.GA130730@dev-arch.thelio-3990X> <20230810144344.GLZNT3oM6MLVdzGlyd@fat_crate.local> <20230810150706.GA42856@dev-arch.thelio-3990X> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20230810150706.GA42856@dev-arch.thelio-3990X> X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Aug 10, 2023 at 08:07:06AM -0700, Nathan Chancellor wrote: > [ 2.408527] microcode: microcode updated early to new patch_level=0x0830107a Hm, a wild guess: can you boot the *host* with "dis_ucode_ldr" on the kernel cmdline and see if it still reproduces? Also, can you bisect rc5..master to see which exact patch is causing this? Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette