Message ID | 20221103135736.42295-2-mlevitsk@redhat.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <kvm-owner@kernel.org> 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 ED70AC4332F for <kvm@archiver.kernel.org>; Thu, 3 Nov 2022 13:59:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231715AbiKCN7C (ORCPT <rfc822;kvm@archiver.kernel.org>); Thu, 3 Nov 2022 09:59:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52144 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231222AbiKCN6y (ORCPT <rfc822;kvm@vger.kernel.org>); Thu, 3 Nov 2022 09:58:54 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9F73F15A25 for <kvm@vger.kernel.org>; Thu, 3 Nov 2022 06:57:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1667483872; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=MNLPTKjKZGsyp4iQjia1o+n+MQq5Qzv7rr6Sw6M18Rc=; b=DKkTyV7EMb1nbrXy6AyBeXDJ5jtnVLvgX3HMZlZQ+sShIVKeAGtRqBMKmuQajQxBkxZdoK lHUoDACiNn/IHxYzCn280jWjrDqWNzAPIy6S/bwtsmgPxWYSuQduwOfuhv5wgSjVNOnZ1i T1MdZNPafieYd9HqetCWbUUL00YN7pI= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-655-0tTLQ6N2NNiqYTNDc7oPOQ-1; Thu, 03 Nov 2022 09:57:49 -0400 X-MC-Unique: 0tTLQ6N2NNiqYTNDc7oPOQ-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 7A11A1C1434A; Thu, 3 Nov 2022 13:57:44 +0000 (UTC) Received: from amdlaptop.tlv.redhat.com (dhcp-4-238.tlv.redhat.com [10.35.4.238]) by smtp.corp.redhat.com (Postfix) with ESMTP id 11AE840C83D9; Thu, 3 Nov 2022 13:57:40 +0000 (UTC) From: Maxim Levitsky <mlevitsk@redhat.com> To: kvm@vger.kernel.org Cc: Paolo Bonzini <pbonzini@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>, Shuah Khan <shuah@kernel.org>, Yang Zhong <yang.zhong@intel.com>, Wei Wang <wei.w.wang@intel.com>, Colton Lewis <coltonlewis@google.com>, Sean Christopherson <seanjc@google.com>, Jim Mattson <jmattson@google.com>, Chenyi Qiang <chenyi.qiang@intel.com>, Borislav Petkov <bp@alien8.de>, linux-kernel@vger.kernel.org, x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>, Dave Hansen <dave.hansen@linux.intel.com>, Ingo Molnar <mingo@redhat.com>, David Matlack <dmatlack@google.com>, Peter Xu <peterx@redhat.com>, Maxim Levitsky <mlevitsk@redhat.com>, linux-kselftest@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH 1/9] KVM: x86: nSVM: leave nested mode on vCPU free Date: Thu, 3 Nov 2022 15:57:28 +0200 Message-Id: <20221103135736.42295-2-mlevitsk@redhat.com> In-Reply-To: <20221103135736.42295-1-mlevitsk@redhat.com> References: <20221103135736.42295-1-mlevitsk@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 Precedence: bulk List-ID: <kvm.vger.kernel.org> X-Mailing-List: kvm@vger.kernel.org |
Series |
nSVM: Security and correctness fixes
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diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index d22a809d923339..e9cec1b692051c 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -1440,6 +1440,7 @@ static void svm_vcpu_free(struct kvm_vcpu *vcpu) */ svm_clear_current_vmcb(svm->vmcb); + svm_leave_nested(vcpu); svm_free_nested(svm); sev_free_vcpu(vcpu);
If the VM was terminated while nested, we free the nested state while the vCPU still is in nested mode. Soon a warning will be added for this condition. Cc: stable@vger.kernel.org Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> --- arch/x86/kvm/svm/svm.c | 1 + 1 file changed, 1 insertion(+)