From nobody Mon Apr 6 22:51:02 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 18B85FA3740 for ; Tue, 25 Oct 2022 11:57:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231259AbiJYL53 (ORCPT ); Tue, 25 Oct 2022 07:57:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37864 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231368AbiJYL5Y (ORCPT ); Tue, 25 Oct 2022 07:57:24 -0400 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BF7A189931; Tue, 25 Oct 2022 04:57:23 -0700 (PDT) Received: from pps.filterd (m0098421.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 29PB8Vnr018212; Tue, 25 Oct 2022 11:57:06 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=unYoLKyySQNeEa7w7NV2iUuiZnAZ4UtNtoWgCnGGL4s=; b=Tdv8iDsUtOVxKZ5lgv5u/oTkEReQD8iUV/6UpmObUgTG4mPJXrksYJNt6pWsGP5sCNUI ORqOEpmh2jV41VG+8lDKgt7Yns7v0v/F5jdE6XvRKzvo9YFB+L+vLyRK13oBWOJrAdX7 lpj5KMqzq4PVa5o5Q4toxx5Jgb9HqttAhGbnPIz/DUnLM0RuSbZx5g8zVY8DJHZ+Ab3a d/yDwsegjpoisILQpXqTaGT0/C/5sc9x2+x+uN4ZKkbcQcY49VIkpRqI0eNP9h6ENUMH erp8hra3pFze1nfA0DlPuLV1lg9QWPaZ/qPve2pd+6n7wG9B26AwmCJy7peHW/IRdwCj rw== Received: from ppma03ams.nl.ibm.com (62.31.33a9.ip4.static.sl-reverse.com [169.51.49.98]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3keea7a69w-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 25 Oct 2022 11:57:05 +0000 Received: from pps.filterd (ppma03ams.nl.ibm.com [127.0.0.1]) by ppma03ams.nl.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 29PBoqLl000478; Tue, 25 Oct 2022 11:57:04 GMT Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by ppma03ams.nl.ibm.com with ESMTP id 3kdugat5r4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 25 Oct 2022 11:57:03 +0000 Received: from d06av24.portsmouth.uk.ibm.com (mk.ibm.com [9.149.105.60]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 29PBv0oL3932904 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 25 Oct 2022 11:57:00 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 40C924203F; Tue, 25 Oct 2022 11:57:00 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id ABD4C42047; Tue, 25 Oct 2022 11:56:59 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 25 Oct 2022 11:56:59 +0000 (GMT) From: Niklas Schnelle To: Matthew Rosato , iommu@lists.linux.dev, Joerg Roedel , Will Deacon , Robin Murphy , Jason Gunthorpe Cc: Gerd Bayer , Pierre Morel , linux-s390@vger.kernel.org, borntraeger@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, gerald.schaefer@linux.ibm.com, agordeev@linux.ibm.com, svens@linux.ibm.com, linux-kernel@vger.kernel.org, Wenjia Zhang , Julian Ruess Subject: [PATCH v8 4/6] iommu/s390: Fix incorrect aperture check Date: Tue, 25 Oct 2022 13:56:55 +0200 Message-Id: <20221025115657.1666860-5-schnelle@linux.ibm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221025115657.1666860-1-schnelle@linux.ibm.com> References: <20221025115657.1666860-1-schnelle@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 9RftsI3RZCAxYB0NfIuqzR71TKrTObBQ X-Proofpoint-GUID: 9RftsI3RZCAxYB0NfIuqzR71TKrTObBQ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-10-25_05,2022-10-25_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 lowpriorityscore=0 bulkscore=0 phishscore=0 mlxlogscore=939 mlxscore=0 spamscore=0 adultscore=0 impostorscore=0 clxscore=1015 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2209130000 definitions=main-2210250067 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The domain->geometry.aperture_end specifies the last valid address treat it as such when checking if a DMA address is valid. Reviewed-by: Pierre Morel Reviewed-by: Matthew Rosato Reviewed-by: Jason Gunthorpe Signed-off-by: Niklas Schnelle --- v7->v8: - Added Jason's R-b v3->v4: - Make check robust against overflow (Jason) drivers/iommu/s390-iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/s390-iommu.c b/drivers/iommu/s390-iommu.c index 9b3adc61005c..3e601ca6ee0f 100644 --- a/drivers/iommu/s390-iommu.c +++ b/drivers/iommu/s390-iommu.c @@ -213,7 +213,7 @@ static int s390_iommu_update_trans(struct s390_domain *= s390_domain, int rc =3D 0; =20 if (dma_addr < s390_domain->domain.geometry.aperture_start || - dma_addr + size > s390_domain->domain.geometry.aperture_end) + (dma_addr + size - 1) > s390_domain->domain.geometry.aperture_end) return -EINVAL; =20 nr_pages =3D PAGE_ALIGN(size) >> PAGE_SHIFT; --=20 2.34.1