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 X-Spam-Level: X-Spam-Status: No, score=-5.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DF897C2BA83 for ; Sun, 9 Feb 2020 20:20:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AB3BF2081E for ; Sun, 9 Feb 2020 20:20:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581279617; bh=P5HCLvJzE1lMscUx39LZyTusKt00vdCNB9oi3JfY8OE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=Ea4sYoiio3kBDnDweY9cebN4grFR77gt/ZJVubBawze+PSCd1EoHEGaR+VI+jzCpC AUoRHnp/T16oweXs/I8emCp45wcUz/ho3CEU6MKkzTK5ZEdU0TLbxHzjrRYe2CfMYL 1xe8TfsRWYNGXou1IaXVWVjtSE0Zoxfe+uMguzKU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727419AbgBIUUR (ORCPT ); Sun, 9 Feb 2020 15:20:17 -0500 Received: from mail.kernel.org ([198.145.29.99]:40812 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727416AbgBIUUQ (ORCPT ); Sun, 9 Feb 2020 15:20:16 -0500 Received: from localhost (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 04B6B20733; Sun, 9 Feb 2020 20:20:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581279616; bh=P5HCLvJzE1lMscUx39LZyTusKt00vdCNB9oi3JfY8OE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=HTTrcwomEDEabg3Hcq+o617cKURytzUl6hyzCWN1UCC3u8d7wscIET5D6Y2RdiJfv e0ramYOaKgEXAQ9i8Vv7FDHqu51T/pyWX6HewYY5dWM620Jdkvk8O937pSYNUZ+y2D SlnYGtJeQe10+4nvQZ4xN9/dQRkxTi0VNgmTorbU= Date: Sun, 9 Feb 2020 15:20:15 -0500 From: Sasha Levin To: gregkh@linuxfoundation.org Cc: pomonis@google.com, ahonig@google.com, nifi@google.com, pbonzini@redhat.com, sean.j.christopherson@intel.com, stable@vger.kernel.org Subject: Re: FAILED: patch "[PATCH] KVM: x86: Protect exit_reason from being used in" failed to apply to 5.5-stable tree Message-ID: <20200209202015.GA3584@sasha-vm> References: <15812515873364@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <15812515873364@kroah.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Sun, Feb 09, 2020 at 01:33:07PM +0100, gregkh@linuxfoundation.org wrote: > >The patch below does not apply to the 5.5-stable tree. >If someone wants it applied there, or to any other stable or longterm >tree, then please email the backport, including the original git commit >id to . > >thanks, > >greg k-h > >------------------ original commit in Linus's tree ------------------ > >>From c926f2f7230b1a29e31914b51db680f8cbf3103f Mon Sep 17 00:00:00 2001 >From: Marios Pomonis >Date: Wed, 11 Dec 2019 12:47:51 -0800 >Subject: [PATCH] KVM: x86: Protect exit_reason from being used in > Spectre-v1/L1TF attacks > >This fixes a Spectre-v1/L1TF vulnerability in vmx_handle_exit(). >While exit_reason is set by the hardware and therefore should not be >attacker-influenced, an unknown exit_reason could potentially be used to >perform such an attack. > >Fixes: 55d2375e58a6 ("KVM: nVMX: Move nested code to dedicated files") > >Signed-off-by: Marios Pomonis >Signed-off-by: Nick Finco >Suggested-by: Sean Christopherson >Reviewed-by: Andrew Honig >Cc: stable@vger.kernel.org >Signed-off-by: Paolo Bonzini The conflict in 5.5 was because we didn't have 1e9e2622a149 ("KVM: VMX: FIXED+PHYSICAL mode single target IPI fastpath"), I've fixed it and queued it up. Backports for older kernels are still missing. -- Thanks, Sasha