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=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 3AEB0C433E2 for ; Thu, 16 Jul 2020 18:38:44 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1AF0120787 for ; Thu, 16 Jul 2020 18:38:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1AF0120787 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id F068283468; Thu, 16 Jul 2020 18:38:43 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 8gv33VdoaQ8w; Thu, 16 Jul 2020 18:38:42 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id 13F3F83470; Thu, 16 Jul 2020 18:38:42 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id F1CBEC1797; Thu, 16 Jul 2020 18:38:41 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 38C96C07FF for ; Thu, 16 Jul 2020 18:38:40 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id 4B092811DA for ; Thu, 16 Jul 2020 18:38:39 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id YIlVuhrx2vnU for ; Thu, 16 Jul 2020 18:38:37 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by whitealder.osuosl.org (Postfix) with ESMTPS id 31218813E1 for ; Thu, 16 Jul 2020 18:38:37 +0000 (UTC) IronPort-SDR: KmI2QY0VvZBz3b6d1N1cuGSaMYiRetZ+10sZJ5e6jxOAZuLDE20t2AirQuIP7FKYySQN5141Np HFuxBkKjJjrg== X-IronPort-AV: E=McAfee;i="6000,8403,9684"; a="129554097" X-IronPort-AV: E=Sophos;i="5.75,360,1589266800"; d="scan'208";a="129554097" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Jul 2020 11:38:35 -0700 IronPort-SDR: LQKkNqx8qAF9JuLkKoio2GWHPoODxcKkMDnngzPnHHVvW4bDxKHuyvHoK7jEkP+THF7Ca4SiPS gq0n1WoqePMQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,360,1589266800"; d="scan'208";a="460572052" Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by orsmga005.jf.intel.com with ESMTP; 16 Jul 2020 11:38:35 -0700 From: Jacob Pan To: iommu@lists.linux-foundation.org, LKML , Joerg Roedel , Alex Williamson Subject: [PATCH v5 5/5] iommu/vt-d: Check UAPI data processed by IOMMU core Date: Thu, 16 Jul 2020 11:45:17 -0700 Message-Id: <1594925117-64892-6-git-send-email-jacob.jun.pan@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1594925117-64892-1-git-send-email-jacob.jun.pan@linux.intel.com> References: <1594925117-64892-1-git-send-email-jacob.jun.pan@linux.intel.com> Cc: "Tian, Kevin" , Raj Ashok , Jonathan Corbet , Jean-Philippe Brucker , Christoph Hellwig , David Woodhouse X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" IOMMU generic layer already does sanity checks UAPI data for version match and argsz range under generic information. Remove the redundant version check from VT-d driver and check for vendor specific data size. Signed-off-by: Jacob Pan --- drivers/iommu/intel/iommu.c | 3 +-- drivers/iommu/intel/svm.c | 7 +++++-- 2 files changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index f3a6ca88cf95..5e80484f0537 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -5383,8 +5383,7 @@ intel_iommu_sva_invalidate(struct iommu_domain *domain, struct device *dev, int ret = 0; u64 size = 0; - if (!inv_info || !dmar_domain || - inv_info->version != IOMMU_CACHE_INVALIDATE_INFO_VERSION_1) + if (!inv_info || !dmar_domain) return -EINVAL; if (!dev || !dev_is_pci(dev)) diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c index 713b3a218483..55ea11e9c0f5 100644 --- a/drivers/iommu/intel/svm.c +++ b/drivers/iommu/intel/svm.c @@ -240,8 +240,11 @@ int intel_svm_bind_gpasid(struct iommu_domain *domain, struct device *dev, if (WARN_ON(!iommu) || !data) return -EINVAL; - if (data->version != IOMMU_GPASID_BIND_VERSION_1 || - data->format != IOMMU_PASID_FORMAT_INTEL_VTD) + if (data->format != IOMMU_PASID_FORMAT_INTEL_VTD) + return -EINVAL; + + /* IOMMU core ensures argsz is more than the start of the union */ + if (data->argsz < offsetofend(struct iommu_gpasid_bind_data, vendor.vtd)) return -EINVAL; if (!dev_is_pci(dev)) -- 2.7.4 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu