From patchwork Fri Mar 12 17:31:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 12135553 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=-16.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 2FA53C433DB for ; Fri, 12 Mar 2021 17:33:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F19B264FC3 for ; Fri, 12 Mar 2021 17:33:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232550AbhCLRch (ORCPT ); Fri, 12 Mar 2021 12:32:37 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:60792 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232043AbhCLRcZ (ORCPT ); Fri, 12 Mar 2021 12:32:25 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1615570344; 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=mdDREx6XEJ8GpRKupc63kfJAVUqoQp9Cy3QT3dCgXGE=; b=e0Q3vz2XoqvmBPP0h3O/4b4xCi4fNm5fmpo21CJBk6566ytMuAZvjnrTvDcYIBhHnvgMZa VVRExvrvScZCuUqEa4PompPdYpJzEeOIvIuTYcFuDPR+VJf7TaMqA+pR3jdac4qbRSVCea 5STmHk01VrSi/iJQ9S6xYA8uwlcdhPQ= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-130-Hym53le9OI2ark4-F_kjvg-1; Fri, 12 Mar 2021 12:32:23 -0500 X-MC-Unique: Hym53le9OI2ark4-F_kjvg-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 89277800D55; Fri, 12 Mar 2021 17:32:21 +0000 (UTC) Received: from laptop.redhat.com (ovpn-112-254.ams2.redhat.com [10.36.112.254]) by smtp.corp.redhat.com (Postfix) with ESMTP id 52A971002388; Fri, 12 Mar 2021 17:32:17 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, maz@kernel.org, drjones@redhat.com, alexandru.elisei@arm.com Cc: james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, shuah@kernel.org, pbonzini@redhat.com Subject: [PATCH v3 2/8] KVM: arm64: Fix KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION read Date: Fri, 12 Mar 2021 18:31:56 +0100 Message-Id: <20210312173202.89576-3-eric.auger@redhat.com> In-Reply-To: <20210312173202.89576-1-eric.auger@redhat.com> References: <20210312173202.89576-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org The doc says: "The characteristics of a specific redistributor region can be read by presetting the index field in the attr data. Only valid for KVM_DEV_TYPE_ARM_VGIC_V3" Unfortunately the existing code fails to read the input attr data. Fixes: 04c110932225 ("KVM: arm/arm64: Implement KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION") Cc: stable@vger.kernel.org#v4.17+ Signed-off-by: Eric Auger Reviewed-by: Alexandru Elisei --- v1 -> v2: - in the commit message, remove the statement that the index always is 0 - add Alexandru's R-b --- arch/arm64/kvm/vgic/vgic-kvm-device.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/kvm/vgic/vgic-kvm-device.c b/arch/arm64/kvm/vgic/vgic-kvm-device.c index 44419679f91a..2f66cf247282 100644 --- a/arch/arm64/kvm/vgic/vgic-kvm-device.c +++ b/arch/arm64/kvm/vgic/vgic-kvm-device.c @@ -226,6 +226,9 @@ static int vgic_get_common_attr(struct kvm_device *dev, u64 addr; unsigned long type = (unsigned long)attr->attr; + if (copy_from_user(&addr, uaddr, sizeof(addr))) + return -EFAULT; + r = kvm_vgic_addr(dev->kvm, type, &addr, false); if (r) return (r == -ENODEV) ? -ENXIO : r;