From nobody Sun Feb 8 21:47:27 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.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; Authentication-Results: mx.zohomail.com; spf=pass (zoho.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=1556814200; cv=none; d=zoho.com; s=zohoarc; b=nH/DUJ2n9Q5WtiGs0DYUyYfYPUC3pu/7x/b96N2cciIt/dOp0K24ot33OFxahcMSXTmLdAjiIhybS4tUk4qfTkQCUQK/dh49tekr7i6IOefrJ6qU7fr1kOpM0v1/h+EMBDRtvzEWzaPwVYES1kVn0NFaxKKijUmaPpRiB47/I4g= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1556814200; 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:ARC-Authentication-Results; bh=1OhOlz3h1UN+dm847TgM8QbNn5Oo/9mvm5xEq2goDhI=; b=R2KKR0zyRPaTVyGEQW/N6FoGtBeDK65xiEE7NHJzr2Oz/O0we8USjQxDiOJViuTaZ7387UZ0Vu88Skh2WMisIzhaIx+eBuJLrzIgDsxeafjALR8En7/4og7VRu2VGE60jgRCsujMQRQTYyZWtj2tY2B8XKuTwfUjp6olwxLutVw= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.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 1556814200837314.09276442461396; Thu, 2 May 2019 09:23:20 -0700 (PDT) Received: from localhost ([127.0.0.1]:54135 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hMEUO-0004KY-SE for importer@patchew.org; Thu, 02 May 2019 12:23:16 -0400 Received: from eggs.gnu.org ([209.51.188.92]:43335) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hMEL8-0004Ky-WC for qemu-devel@nongnu.org; Thu, 02 May 2019 12:13:44 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hMEL6-0002NH-Au for qemu-devel@nongnu.org; Thu, 02 May 2019 12:13:42 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56448) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hMEL6-0002Mi-3C for qemu-devel@nongnu.org; Thu, 02 May 2019 12:13:40 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5F3CD356F6; Thu, 2 May 2019 16:13:39 +0000 (UTC) Received: from thuth.com (ovpn-116-131.ams2.redhat.com [10.36.116.131]) by smtp.corp.redhat.com (Postfix) with ESMTP id DCD7A17D58; Thu, 2 May 2019 16:13:37 +0000 (UTC) From: Thomas Huth To: Peter Maydell , qemu-devel@nongnu.org Date: Thu, 2 May 2019 18:13:10 +0200 Message-Id: <20190502161310.15624-9-thuth@redhat.com> In-Reply-To: <20190502161310.15624-1-thuth@redhat.com> References: <20190502161310.15624-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Thu, 02 May 2019 16:13:39 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 8/8] hw/pci-host: Use object_initialize_child for correct reference counting 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: Eduardo Otubo , Helge Deller , Eduardo Habkost Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" Both functions, object_initialize() and object_property_add_child() increase the reference counter of the new object, so one of the references has to be dropped afterwards to get the reference counting right. Otherwise the child object might not be properly cleaned up when the parent gets destroyed. Some functions of the pci-host devices miss to drop one of the references. Fix it by using object_initialize_child() instead, which takes care of calling object_initialize(), object_property_add_child() and object_unref() in the right order. Suggested-by: Eduardo Habkost Message-Id: <20190430191552.4027-1-thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daud=C3=A9 Tested-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Thomas Huth --- hw/pci-host/designware.c | 4 ++-- hw/pci-host/gpex.c | 5 +++-- hw/pci-host/q35.c | 4 ++-- hw/pci-host/xilinx-pcie.c | 4 ++-- 4 files changed, 9 insertions(+), 8 deletions(-) diff --git a/hw/pci-host/designware.c b/hw/pci-host/designware.c index 29ea313798..64ad21d295 100644 --- a/hw/pci-host/designware.c +++ b/hw/pci-host/designware.c @@ -721,8 +721,8 @@ static void designware_pcie_host_init(Object *obj) DesignwarePCIEHost *s =3D DESIGNWARE_PCIE_HOST(obj); DesignwarePCIERoot *root =3D &s->root; =20 - object_initialize(root, sizeof(*root), TYPE_DESIGNWARE_PCIE_ROOT); - object_property_add_child(obj, "root", OBJECT(root), NULL); + object_initialize_child(obj, "root", root, sizeof(*root), + TYPE_DESIGNWARE_PCIE_ROOT, &error_abort, NULL); qdev_prop_set_int32(DEVICE(root), "addr", PCI_DEVFN(0, 0)); qdev_prop_set_bit(DEVICE(root), "multifunction", false); } diff --git a/hw/pci-host/gpex.c b/hw/pci-host/gpex.c index 2583b151a4..1bafffcc34 100644 --- a/hw/pci-host/gpex.c +++ b/hw/pci-host/gpex.c @@ -29,6 +29,7 @@ * http://www.firmware.org/1275/practice/imap/imap0_9d.pdf */ #include "qemu/osdep.h" +#include "qapi/error.h" #include "hw/hw.h" #include "hw/pci-host/gpex.h" =20 @@ -120,8 +121,8 @@ static void gpex_host_initfn(Object *obj) GPEXHost *s =3D GPEX_HOST(obj); GPEXRootState *root =3D &s->gpex_root; =20 - object_initialize(root, sizeof(*root), TYPE_GPEX_ROOT_DEVICE); - object_property_add_child(obj, "gpex_root", OBJECT(root), NULL); + object_initialize_child(obj, "gpex_root", root, sizeof(*root), + TYPE_GPEX_ROOT_DEVICE, &error_abort, NULL); qdev_prop_set_int32(DEVICE(root), "addr", PCI_DEVFN(0, 0)); qdev_prop_set_bit(DEVICE(root), "multifunction", false); } diff --git a/hw/pci-host/q35.c b/hw/pci-host/q35.c index 7b871b5734..960939f5ed 100644 --- a/hw/pci-host/q35.c +++ b/hw/pci-host/q35.c @@ -216,8 +216,8 @@ static void q35_host_initfn(Object *obj) memory_region_init_io(&phb->data_mem, obj, &pci_host_data_le_ops, phb, "pci-conf-data", 4); =20 - object_initialize(&s->mch, sizeof(s->mch), TYPE_MCH_PCI_DEVICE); - object_property_add_child(OBJECT(s), "mch", OBJECT(&s->mch), NULL); + object_initialize_child(OBJECT(s), "mch", &s->mch, sizeof(s->mch), + TYPE_MCH_PCI_DEVICE, &error_abort, NULL); qdev_prop_set_int32(DEVICE(&s->mch), "addr", PCI_DEVFN(0, 0)); qdev_prop_set_bit(DEVICE(&s->mch), "multifunction", false); /* mch's object_initialize resets the default value, set it again */ diff --git a/hw/pci-host/xilinx-pcie.c b/hw/pci-host/xilinx-pcie.c index 60309afe9e..ceb00e23e6 100644 --- a/hw/pci-host/xilinx-pcie.c +++ b/hw/pci-host/xilinx-pcie.c @@ -149,8 +149,8 @@ static void xilinx_pcie_host_init(Object *obj) XilinxPCIEHost *s =3D XILINX_PCIE_HOST(obj); XilinxPCIERoot *root =3D &s->root; =20 - object_initialize(root, sizeof(*root), TYPE_XILINX_PCIE_ROOT); - object_property_add_child(obj, "root", OBJECT(root), NULL); + object_initialize_child(obj, "root", root, sizeof(*root), + TYPE_XILINX_PCIE_ROOT, &error_abort, NULL); qdev_prop_set_int32(DEVICE(root), "addr", PCI_DEVFN(0, 0)); qdev_prop_set_bit(DEVICE(root), "multifunction", false); } --=20 2.21.0