From nobody Thu Dec 18 22:22:59 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1604504678; cv=none; d=zohomail.com; s=zohoarc; b=HVJX7fIwrDidpzb1xTs7A920c6Ugd6tgRlIYqA9uA98vpX9Ar4as5POsDNgBetBR02429oh3JN9Idvmaz1ZCsjwDvH6motHnuKyInGjAhF3D9eQumkccLHmALKLhJ8YAvUwNlvmCuhpeRsTmoGGP3tSDyyFsymN3eD48/u++piI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1604504678; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=1AFHdjTsEEWyU+9Ji73dICGnEMrarbV23JrcVT7tAvA=; b=Xp4CEWSwrAgZeRaGHyyj11ShpZgpjJJNYEw1dD+Jq46v9nruTkfOOs6et/LsdGP4J3O6vqVE7EY3D+zauTc9f6ol4OerpXNwMpj/rta1ySJUwpO8bJZxhspZ9w+GsDVGLsyzgDmlKFnyz/vhbSRUcePTuOrHCpe4rYReu9suiZU= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1604504678307636.9890226821003; Wed, 4 Nov 2020 07:44:38 -0800 (PST) Received: from localhost ([::1]:37962 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kaKxg-0000j1-MW for importer@patchew.org; Wed, 04 Nov 2020 10:44:36 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:60914) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kaKc2-0000Vg-CB for qemu-devel@nongnu.org; Wed, 04 Nov 2020 10:22:14 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:47950) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kaKc0-0008TM-0e for qemu-devel@nongnu.org; Wed, 04 Nov 2020 10:22:13 -0500 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-509-b6RACBuLMhOaRenmdG-Slg-1; Wed, 04 Nov 2020 10:22:09 -0500 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B77081007284; Wed, 4 Nov 2020 15:22:07 +0000 (UTC) Received: from localhost (ovpn-115-145.ams2.redhat.com [10.36.115.145]) by smtp.corp.redhat.com (Postfix) with ESMTP id 57AE360C84; Wed, 4 Nov 2020 15:22:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1604503331; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=1AFHdjTsEEWyU+9Ji73dICGnEMrarbV23JrcVT7tAvA=; b=AelltDVdVBK3HA3q1su9+SkEyqrYa+1590bwNqbmqv0oCteqUngLoE8EBE73Er3DvhdqO6 clS/ZB3qo5PPJZNv2PgRrUksWN8rMBQxlSwB+AU+RUvW3PM4ucobz477yDbDl8H67FxqAb rh1BCeMu832YV0xUf1DYeSTzA4fXzPY= X-MC-Unique: b6RACBuLMhOaRenmdG-Slg-1 From: Stefan Hajnoczi To: qemu-devel@nongnu.org, Peter Maydell Subject: [PULL 33/33] util/vfio-helpers: Assert offset is aligned to page size Date: Wed, 4 Nov 2020 15:18:28 +0000 Message-Id: <20201104151828.405824-34-stefanha@redhat.com> In-Reply-To: <20201104151828.405824-1-stefanha@redhat.com> References: <20201104151828.405824-1-stefanha@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=216.205.24.124; envelope-from=stefanha@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/03 00:03:41 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Fam Zheng , Kevin Wolf , qemu-block@nongnu.org, =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Eduardo Habkost , kvm@vger.kernel.org, Eric Auger , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Markus Armbruster , Coiby Xu , "Dr. David Alan Gilbert" , Klaus Jensen , Stefan Hajnoczi , Keith Busch , Paolo Bonzini , Max Reitz Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" From: Philippe Mathieu-Daud=C3=A9 mmap(2) states: 'offset' must be a multiple of the page size as returned by sysconf(_SC_PAGE_SIZE). Add an assertion to be sure we don't break this contract. Signed-off-by: Philippe Mathieu-Daud=C3=A9 Message-id: 20201103020733.2303148-8-philmd@redhat.com Signed-off-by: Stefan Hajnoczi Tested-by: Eric Auger --- util/vfio-helpers.c | 1 + 1 file changed, 1 insertion(+) diff --git a/util/vfio-helpers.c b/util/vfio-helpers.c index 73f7bfa754..804768d5c6 100644 --- a/util/vfio-helpers.c +++ b/util/vfio-helpers.c @@ -162,6 +162,7 @@ void *qemu_vfio_pci_map_bar(QEMUVFIOState *s, int index, Error **errp) { void *p; + assert(QEMU_IS_ALIGNED(offset, qemu_real_host_page_size)); assert_bar_index_valid(s, index); p =3D mmap(NULL, MIN(size, s->bar_region_info[index].size - offset), prot, MAP_SHARED, --=20 2.28.0