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=-8.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT 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 73E43C04AAD for ; Tue, 7 May 2019 16:06:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4E311205ED for ; Tue, 7 May 2019 16:06:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726763AbfEGQGp (ORCPT ); Tue, 7 May 2019 12:06:45 -0400 Received: from mga02.intel.com ([134.134.136.20]:42085 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726197AbfEGQGo (ORCPT ); Tue, 7 May 2019 12:06:44 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 07 May 2019 09:06:44 -0700 X-ExtLoop1: 1 Received: from sjchrist-coffee.jf.intel.com ([10.54.74.181]) by orsmga008.jf.intel.com with ESMTP; 07 May 2019 09:06:44 -0700 From: Sean Christopherson To: Paolo Bonzini , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= Cc: kvm@vger.kernel.org, Nadav Amit , Liran Alon , Vitaly Kuznetsov Subject: [PATCH 01/15] KVM: nVMX: Don't dump VMCS if virtual APIC page can't be mapped Date: Tue, 7 May 2019 09:06:26 -0700 Message-Id: <20190507160640.4812-2-sean.j.christopherson@intel.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190507160640.4812-1-sean.j.christopherson@intel.com> References: <20190507160640.4812-1-sean.j.christopherson@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org ... as a malicious userspace can run a toy guest to generate invalid virtual-APIC page addresses in L1, i.e. flood the kernel log with error messages. Fixes: 690908104e39d ("KVM: nVMX: allow tests to use bad virtual-APIC page address") Cc: stable@vger.kernel.org Cc: Paolo Bonzini Signed-off-by: Sean Christopherson --- arch/x86/kvm/vmx/nested.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index 04b40a98f60b..63f2ca847f05 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -2875,9 +2875,6 @@ static void nested_get_vmcs12_pages(struct kvm_vcpu *vcpu) */ vmcs_clear_bits(CPU_BASED_VM_EXEC_CONTROL, CPU_BASED_TPR_SHADOW); - } else { - printk("bad virtual-APIC page address\n"); - dump_vmcs(); } } -- 2.21.0