From patchwork Wed May 11 14:58:04 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cornelia Huck X-Patchwork-Id: 9071561 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 3BF24BF29F for ; Wed, 11 May 2016 15:00:34 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9E1DA201CE for ; Wed, 11 May 2016 15:00:33 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 65E96201C7 for ; Wed, 11 May 2016 15:00:32 +0000 (UTC) Received: from localhost ([::1]:52730 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b0Vcl-0003sx-IJ for patchwork-qemu-devel@patchwork.kernel.org; Wed, 11 May 2016 11:00:31 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51805) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b0Vap-00005J-4Q for qemu-devel@nongnu.org; Wed, 11 May 2016 10:58:38 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b0Vaj-0007Lu-5w for qemu-devel@nongnu.org; Wed, 11 May 2016 10:58:30 -0400 Received: from e06smtp08.uk.ibm.com ([195.75.94.104]:42740) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b0Vai-0007L8-Pi for qemu-devel@nongnu.org; Wed, 11 May 2016 10:58:25 -0400 Received: from localhost by e06smtp08.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 11 May 2016 15:58:20 +0100 X-IBM-Helo: d06dlp02.portsmouth.uk.ibm.com X-IBM-MailFrom: cornelia.huck@de.ibm.com X-IBM-RcptTo: qemu-devel@nongnu.org Received: from b06cxnps4074.portsmouth.uk.ibm.com (d06relay11.portsmouth.uk.ibm.com [9.149.109.196]) by d06dlp02.portsmouth.uk.ibm.com (Postfix) with ESMTP id 112992190061 for ; Wed, 11 May 2016 15:57:55 +0100 (BST) Received: from d06av11.portsmouth.uk.ibm.com (d06av11.portsmouth.uk.ibm.com [9.149.37.252]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u4BEwJ7711600172 for ; Wed, 11 May 2016 14:58:19 GMT Received: from d06av11.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av11.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u4BEwIVV000626 for ; Wed, 11 May 2016 08:58:19 -0600 Received: from tuxmaker.boeblingen.de.ibm.com (tuxmaker.boeblingen.de.ibm.com [9.152.85.9]) by d06av11.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u4BEwDBX032732 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA256 bits=256 verify=NO); Wed, 11 May 2016 08:58:18 -0600 From: Cornelia Huck To: qemu-devel@nongnu.org Date: Wed, 11 May 2016 16:58:04 +0200 Message-Id: <1462978692-33738-13-git-send-email-cornelia.huck@de.ibm.com> X-Mailer: git-send-email 2.6.6 In-Reply-To: <1462978692-33738-1-git-send-email-cornelia.huck@de.ibm.com> References: <1462978692-33738-1-git-send-email-cornelia.huck@de.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16051114-0033-0000-0000-000014546AE0 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 195.75.94.104 Subject: [Qemu-devel] [PATCH v2 for-2.7 12/20] s390x/pci: fix reg_irqs() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Cornelia Huck , borntraeger@de.ibm.com, jfrei@linux.vnet.ibm.com, Yi Min Zhao , agraf@suse.de Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Yi Min Zhao In reg_irqs(), present code assumes that map_indicator() always issues successfully. Let's check it and return the error to caller in order to inform guest. Signed-off-by: Yi Min Zhao Reviewed-by: Cornelia Huck Reviewed-by: Pierre Morel Reviewed-by: Dong Jia Shi Signed-off-by: Cornelia Huck --- hw/s390x/s390-pci-inst.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/hw/s390x/s390-pci-inst.c b/hw/s390x/s390-pci-inst.c index b28e7d1..90d9fda 100644 --- a/hw/s390x/s390-pci-inst.c +++ b/hw/s390x/s390-pci-inst.c @@ -634,8 +634,15 @@ static int reg_irqs(CPUS390XState *env, S390PCIBusDevice *pbdev, ZpciFib fib) len = BITS_TO_LONGS(FIB_DATA_NOI(ldl_p(&fib.data))) * sizeof(unsigned long); pbdev->indicator = get_indicator(ldq_p(&fib.aibv), len); - map_indicator(&pbdev->routes.adapter, pbdev->summary_ind); - map_indicator(&pbdev->routes.adapter, pbdev->indicator); + ret = map_indicator(&pbdev->routes.adapter, pbdev->summary_ind); + if (ret) { + goto out; + } + + ret = map_indicator(&pbdev->routes.adapter, pbdev->indicator); + if (ret) { + goto out; + } pbdev->routes.adapter.summary_addr = ldq_p(&fib.aisb); pbdev->routes.adapter.summary_offset = FIB_DATA_AISBO(ldl_p(&fib.data)); @@ -647,6 +654,12 @@ static int reg_irqs(CPUS390XState *env, S390PCIBusDevice *pbdev, ZpciFib fib) DPRINTF("reg_irqs adapter id %d\n", pbdev->routes.adapter.adapter_id); return 0; +out: + release_indicator(&pbdev->routes.adapter, pbdev->summary_ind); + release_indicator(&pbdev->routes.adapter, pbdev->indicator); + pbdev->summary_ind = NULL; + pbdev->indicator = NULL; + return ret; } static int dereg_irqs(S390PCIBusDevice *pbdev)