From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-617694-1519837210-2-15384028288073543927 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.249, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='uk', MailFrom='org' X-Spam-charsets: cc='UTF-8', plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1519837210; b=Z6uG8Kvw8F8oLVujB8yE+PjkdRJlrVHJzLKGSh1F8vFjuo/ TXMMaW93rIhcFEJZdercobJ0z9k02gT9ctldC8mXGnq5e2jys6lJ9c9y+272FooC hI5gYxNxyOkLbn//pxH9as42bwDZMGXjCr7+gehKDuGwlJNL+xqjOAJeoVgk3UJ0 gb5iqDdUF2JefOBbXrNnx+FDfFf5jkh/+bEAje/81x9RIb05E5Hv+/Krb5ovUonu XgtmCHJynLxXYeGsgN0UwwMJATGOuTm0tMcU9GBNv+DMVn55EGfWe1rcmU18kg6V 1Cg5WrkC+aXUt72mdUf83xz05+p2dUw4qb8saHw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-type:content-transfer-encoding :mime-version:from:to:cc:date:message-id:subject:in-reply-to :sender:list-id; s=arctest; t=1519837210; bh=X+BNMbUy4DJf7w97klE 0j1KDxTBhr3T589zt5kfnDuQ=; b=ep9fzz5eYl0l3B8TXP09rL7SeWvSSudd/M/ kGcXAztJR31cVMaluE9oIjFVcLkNeJ9yuCTk3+TPWl4bQ99aQEZ5K6CUdT/rl+N/ y8YVdcDPS3ITKKyYO9ZrH88YmFFghK8P9m6FFmRKIEUTcJJKtewjujYc/NYvqWHW ETqlutLN6UBLSVBXRlrHpeLU1zGIVAGhW9SyZUYb4XVgIhr0MHP6ttiOWG18Z/rc 8ILZENYCBBUot7xyPXjo4Ofsz23U4Tl/RivtnRfjGAj3qMG54yZhMsZG1EdRXAeD ck0wYbGhswIAhMrsSZ6gVGNSsxMvnIbUFeXXVTJOZwgMwCLRYVQ== ARC-Authentication-Results: i=1; mx3.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=decadent.org.uk; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=decadent.org.uk header.result=pass header_is_org_domain=yes Authentication-Results: mx3.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=decadent.org.uk; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=decadent.org.uk header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933586AbeB1PwX (ORCPT ); Wed, 28 Feb 2018 10:52:23 -0500 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:34391 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932426AbeB1PwV (ORCPT ); Wed, 28 Feb 2018 10:52:21 -0500 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Tianyu Lan" , "Radim =?UTF-8?Q?Kr=C4=8Dm=C3=A1=C5=99?=" , "Paolo Bonzini" , "Jeremi Piotrowski" , "Tianyu Lan" Date: Wed, 28 Feb 2018 15:20:18 +0000 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [PATCH 3.16 213/254] KVM/x86: Fix wrong macro references of X86_CR0_PG_BIT and X86_CR4_PAE_BIT in kvm_valid_sregs() In-Reply-To: X-SA-Exim-Connect-IP: 2a02:8011:400e:2:6f00:88c8:c921:d332 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 3.16.55-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Tianyu Lan commit 37b95951c58fdf08dc10afa9d02066ed9f176fb5 upstream. kvm_valid_sregs() should use X86_CR0_PG and X86_CR4_PAE to check bit status rather than X86_CR0_PG_BIT and X86_CR4_PAE_BIT. This patch is to fix it. Fixes: f29810335965a(KVM/x86: Check input paging mode when cs.l is set) Reported-by: Jeremi Piotrowski Cc: Paolo Bonzini Cc: Radim Krčmář Signed-off-by: Tianyu Lan Signed-off-by: Radim Krčmář Signed-off-by: Ben Hutchings --- arch/x86/kvm/x86.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -6581,13 +6581,13 @@ EXPORT_SYMBOL_GPL(kvm_task_switch); int kvm_valid_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) { - if ((sregs->efer & EFER_LME) && (sregs->cr0 & X86_CR0_PG_BIT)) { + if ((sregs->efer & EFER_LME) && (sregs->cr0 & X86_CR0_PG)) { /* * When EFER.LME and CR0.PG are set, the processor is in * 64-bit mode (though maybe in a 32-bit code segment). * CR4.PAE and EFER.LMA must be set. */ - if (!(sregs->cr4 & X86_CR4_PAE_BIT) + if (!(sregs->cr4 & X86_CR4_PAE) || !(sregs->efer & EFER_LMA)) return -EINVAL; } else {