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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,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 3E286C4332E for ; Mon, 23 Mar 2020 18:38:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2285E20789 for ; Mon, 23 Mar 2020 18:38:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727572AbgCWSiX (ORCPT ); Mon, 23 Mar 2020 14:38:23 -0400 Received: from zeniv.linux.org.uk ([195.92.253.2]:46638 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726643AbgCWSiW (ORCPT ); Mon, 23 Mar 2020 14:38:22 -0400 Received: from viro by ZenIV.linux.org.uk with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jGRxs-00134y-4l; Mon, 23 Mar 2020 18:38:20 +0000 From: Al Viro To: Linus Torvalds Cc: Thomas Gleixner , x86@kernel.org, linux-kernel@vger.kernel.org Subject: [RFC][PATCH 02/22] x86 kvm page table walks: switch to explicit __get_user() Date: Mon, 23 Mar 2020 18:37:59 +0000 Message-Id: <20200323183819.250124-2-viro@ZenIV.linux.org.uk> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200323183819.250124-1-viro@ZenIV.linux.org.uk> References: <20200323183620.GD23230@ZenIV.linux.org.uk> <20200323183819.250124-1-viro@ZenIV.linux.org.uk> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Al Viro Signed-off-by: Al Viro --- arch/x86/kvm/mmu/paging_tmpl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h index 4e1ef0473663..5bea4cfe8a15 100644 --- a/arch/x86/kvm/mmu/paging_tmpl.h +++ b/arch/x86/kvm/mmu/paging_tmpl.h @@ -400,7 +400,7 @@ static int FNAME(walk_addr_generic)(struct guest_walker *walker, goto error; ptep_user = (pt_element_t __user *)((void *)host_addr + offset); - if (unlikely(__copy_from_user(&pte, ptep_user, sizeof(pte)))) + if (unlikely(__get_user(pte, ptep_user))) goto error; walker->ptep_user[walker->level - 1] = ptep_user; -- 2.11.0