From patchwork Fri Sep 27 13:33:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudio Imbrenda X-Patchwork-Id: 11164579 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9A5F0924 for ; Fri, 27 Sep 2019 14:22:04 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 790092146E for ; Fri, 27 Sep 2019 14:22:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 790092146E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:51562 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iDr8E-0005fb-KJ for patchwork-qemu-devel@patchwork.kernel.org; Fri, 27 Sep 2019 10:22:02 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36778) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iDqNL-0005Pv-6h for qemu-devel@nongnu.org; Fri, 27 Sep 2019 09:33:37 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iDqNJ-0001yz-Us for qemu-devel@nongnu.org; Fri, 27 Sep 2019 09:33:34 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:48418) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iDqNJ-0001yT-Ma for qemu-devel@nongnu.org; Fri, 27 Sep 2019 09:33:33 -0400 Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x8RDWbH7127170 for ; Fri, 27 Sep 2019 09:33:32 -0400 Received: from e06smtp05.uk.ibm.com (e06smtp05.uk.ibm.com [195.75.94.101]) by mx0a-001b2d01.pphosted.com with ESMTP id 2v9jysh432-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 27 Sep 2019 09:33:31 -0400 Received: from localhost by e06smtp05.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 27 Sep 2019 14:33:26 +0100 Received: from d06av24.portsmouth.uk.ibm.com (mk.ibm.com [9.149.105.60]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x8RDXPBm61604008 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 27 Sep 2019 13:33:25 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 152F242041; Fri, 27 Sep 2019 13:33:25 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B019B4204B; Fri, 27 Sep 2019 13:33:24 +0000 (GMT) Received: from p-imbrenda.boeblingen.de.ibm.com (unknown [9.152.224.39]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Fri, 27 Sep 2019 13:33:24 +0000 (GMT) From: Claudio Imbrenda To: qemu-devel@nongnu.org, qemu-s390x@nongnu.org Subject: [PATCH v2 2/4] s390x: sclp: boundary check Date: Fri, 27 Sep 2019 15:33:21 +0200 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1569591203-15258-1-git-send-email-imbrenda@linux.ibm.com> References: <1569591203-15258-1-git-send-email-imbrenda@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 19092713-0020-0000-0000-000003725098 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19092713-0021-0000-0000-000021C821B1 Message-Id: <1569591203-15258-3-git-send-email-imbrenda@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-09-27_06:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=835 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1909270127 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 148.163.156.1 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: frankja@linux.ibm.com, david@redhat.com, cohuck@redhat.com, pasic@linux.ibm.com, borntraeger@de.ibm.com, rth@twiddle.net Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Janosch Frank All sclp codes need to be checked for page boundary violations. Signed-off-by: Janosch Frank Reviewed-by: Jason J. Herne Reviewed-by: David Hildenbrand --- hw/s390x/sclp.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c index 95ebfe7..73244c9 100644 --- a/hw/s390x/sclp.c +++ b/hw/s390x/sclp.c @@ -234,6 +234,11 @@ int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code) goto out_write; } + if ((sccb + be16_to_cpu(work_sccb.h.length)) > ((sccb & PAGE_MASK) + PAGE_SIZE)) { + work_sccb.h.response_code = cpu_to_be16(SCLP_RC_SCCB_BOUNDARY_VIOLATION); + goto out_write; + } + sclp_c->execute(sclp, &work_sccb, code); out_write: cpu_physical_memory_write(sccb, &work_sccb,