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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 9EE77C76192 for ; Mon, 29 Jul 2019 09:30:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 744CB20693 for ; Mon, 29 Jul 2019 09:30:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727985AbfG2JaU (ORCPT ); Mon, 29 Jul 2019 05:30:20 -0400 Received: from mail-wr1-f66.google.com ([209.85.221.66]:41032 "EHLO mail-wr1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727931AbfG2JaT (ORCPT ); Mon, 29 Jul 2019 05:30:19 -0400 Received: by mail-wr1-f66.google.com with SMTP id c2so57809179wrm.8 for ; Mon, 29 Jul 2019 02:30:18 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:openpgp:message-id :date:user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=9avy5m8auN2z87gWKpbvtw9ce3O/3bqjjaiEc9X8IB4=; b=l0EBy8mRk0PZpNrnPM8xY/uRDq+soEJyuSoJMmNsmMlmeyK+xU4Uy513PH8z0h1X1k PYS1HaEQ0Ln7M3PyV+ISPjGHaq9wM4CSzGBOTflDpWLJar5q7GNKFjOACyUa8XlnR3Xs tU8ilaZvgVK/d4BJk25g5YgC6Afr5moxsmBT7Bne5FfnpNN+LIGeT2P8xhqGkpI8IfcP zpJpuND9Be5qkEUEVAD8BOsD+tmmOq71rAnTL0arK9PXyzG+6nvlplg1Xl5Nm/daM7Q3 cqISDqthefPZnqO03Fv+INIX1dKt5aizDzco+SBY3yha5t7zEA6oHE4qH45qWwn7A/Q2 NHrg== X-Gm-Message-State: APjAAAUmohHiJuzVJk/YpUzs7kDECiBpK5KP3RNou7W7nUOogfZLal3J 1L9bSxDs8pZ2K6ArYyhVu4zoSw== X-Google-Smtp-Source: APXvYqy0ukqUzu8jgOYkuviFDoJUTuAF/SmhWh3Yh9peouGgMoj42CbJFnks9ZQse0UPz648OOpZQw== X-Received: by 2002:adf:f28a:: with SMTP id k10mr41842741wro.343.1564392617641; Mon, 29 Jul 2019 02:30:17 -0700 (PDT) Received: from ?IPv6:2001:b07:6468:f312:29d3:6123:6d5f:2c04? ([2001:b07:6468:f312:29d3:6123:6d5f:2c04]) by smtp.gmail.com with ESMTPSA id w24sm48173380wmc.30.2019.07.29.02.30.16 (version=TLS1_3 cipher=AEAD-AES128-GCM-SHA256 bits=128/128); Mon, 29 Jul 2019 02:30:17 -0700 (PDT) Subject: Re: [PATCH stable-4.19 1/2] KVM: nVMX: do not use dangling shadow VMCS after guest reset To: Jack Wang , Sasha Levin , Greg Kroah-Hartman Cc: Vitaly Kuznetsov , stable@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, =?UTF-8?B?UmFkaW0gS3LEjW3DocWZ?= References: <20190725104645.30642-1-vkuznets@redhat.com> <20190725104645.30642-2-vkuznets@redhat.com> <2ea5d588-8573-6653-b848-0b06d1f98310@redhat.com> From: Paolo Bonzini Openpgp: preference=signencrypt Message-ID: <471a1023-4f0a-5727-e7b2-48701f75188f@redhat.com> Date: Mon, 29 Jul 2019 11:30:19 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 29/07/19 11:29, Jack Wang wrote: > Thanks Paolo for confirmation. I'm asking because we had one incident > in our production with 4.14.129 kernel, > System is Skylake Gold cpu, first kvm errors, host hung afterwards > > kernel: [1186161.091160] kvm: vmptrld (null)/6bfc00000000 failed > kernel: [1186161.091537] kvm: vmclear fail: (null)/6bfc00000000 > kernel: [1186186.490300] watchdog: BUG: soft lockup - CPU#54 stuck for > 23s! [qemu:16639] > > Hi Sasha, hi Greg, > > Would be great if you can pick this patch also to 4.14 kernel. Acked-by: Paolo Bonzini