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=-6.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS autolearn=ham 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 4CD17C432C0 for ; Wed, 20 Nov 2019 14:48:26 +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 18496217D6 for ; Wed, 20 Nov 2019 14:48:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="OZ5Cn4zv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 18496217D6 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:58868 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iXRHN-0006U4-2Q for qemu-devel@archiver.kernel.org; Wed, 20 Nov 2019 09:48:25 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:53242) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iXR8Z-0006UZ-R7 for qemu-devel@nongnu.org; Wed, 20 Nov 2019 09:39:20 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iXR8Y-0007Qq-NJ for qemu-devel@nongnu.org; Wed, 20 Nov 2019 09:39:19 -0500 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:28049 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iXR8Y-0007Qd-Jv for qemu-devel@nongnu.org; Wed, 20 Nov 2019 09:39:18 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1574260758; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=dMHW1WAgn70tsh97+exGzsGlsn1i7EXNYS2vp0eYyyY=; b=OZ5Cn4zvyjhdKltB0iPjKuXLN78z6EjUyCUrko5pMz8lmYkBk/Cqj7SDxmM/LyQyudDOdA FwUDWzGvw2Pw4r73R2J0wapsYcGHryfEJX9Jz7326kg8Y4aXgxoUTXS9SBug8Wtepe4geF +x7/NmwDbpr+Fbpw3gS9bi1maSjzZz0= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-301-VKCzY_DzNRyN6phr8gvUtg-1; Wed, 20 Nov 2019 09:39:16 -0500 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4FB95107ACC4; Wed, 20 Nov 2019 14:39:15 +0000 (UTC) Received: from localhost (dhcp-192-217.str.redhat.com [10.33.192.217]) by smtp.corp.redhat.com (Postfix) with ESMTPS id EE4DE2A81F; Wed, 20 Nov 2019 14:39:14 +0000 (UTC) From: Jens Freimann To: qemu-devel@nongnu.org Subject: [PATCH v2 3/4] net/virtio: avoid passing NULL to qdev_set_parent_bus Date: Wed, 20 Nov 2019 15:38:58 +0100 Message-Id: <20191120143859.24584-4-jfreimann@redhat.com> In-Reply-To: <20191120143859.24584-1-jfreimann@redhat.com> References: <20191120143859.24584-1-jfreimann@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-MC-Unique: VKCzY_DzNRyN6phr8gvUtg-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 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: peter.maydell@linaro.org, jasowang@redhat.com, dgilbert@redhat.com, mst@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Make sure we don't pass NULL to qdev_set_parent_bus(). Also simplify code a bit and fix a typo. This fixes CID 1407224. Fixes: 9711cd0dfc3f ("net/virtio: add failover support") Signed-off-by: Jens Freimann --- hw/net/virtio-net.c | 42 +++++++++++++++++++++++++----------------- 1 file changed, 25 insertions(+), 17 deletions(-) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index ac4d19109e..78f1e4e87c 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -2805,25 +2805,33 @@ static bool failover_replug_primary(VirtIONet *n, E= rror **errp) n->primary_device_opts =3D qemu_opts_from_qdict( qemu_find_opts("device"), n->primary_device_dict, errp); - } - if (n->primary_device_opts) { - if (n->primary_dev) { - n->primary_bus =3D n->primary_dev->parent_bus; - } - qdev_set_parent_bus(n->primary_dev, n->primary_bus); - n->primary_should_be_hidden =3D false; - qemu_opt_set_bool(n->primary_device_opts, - "partially_hotplugged", true, errp); - hotplug_ctrl =3D qdev_get_hotplug_handler(n->primary_dev); - if (hotplug_ctrl) { - hotplug_handler_pre_plug(hotplug_ctrl, n->primary_dev, errp); - hotplug_handler_plug(hotplug_ctrl, n->primary_dev, errp); + if (!n->primary_device_opts) { + error_setg(errp, "virtio_net: couldn't find primary device opt= s"); + goto out; } - if (!n->primary_dev) { + } + if (!n->primary_dev) { error_setg(errp, "virtio_net: couldn't find primary device"); - } + goto out; } - return *errp !=3D NULL; + + n->primary_bus =3D n->primary_dev->parent_bus; + if (!n->primary_bus) { + error_setg(errp, "virtio_net: couldn't find primary bus"); + goto out; + } + qdev_set_parent_bus(n->primary_dev, n->primary_bus); + n->primary_should_be_hidden =3D false; + qemu_opt_set_bool(n->primary_device_opts, + "partially_hotplugged", true, errp); + hotplug_ctrl =3D qdev_get_hotplug_handler(n->primary_dev); + if (hotplug_ctrl) { + hotplug_handler_pre_plug(hotplug_ctrl, n->primary_dev, errp); + hotplug_handler_plug(hotplug_ctrl, n->primary_dev, errp); + } + +out: + return *errp =3D=3D NULL; } =20 static void virtio_net_handle_migration_primary(VirtIONet *n, @@ -2852,7 +2860,7 @@ static void virtio_net_handle_migration_primary(VirtI= ONet *n, warn_report("couldn't unplug primary device"); } } else if (migration_has_failed(s)) { - /* We already unplugged the device let's plugged it back */ + /* We already unplugged the device let's plug it back */ if (!failover_replug_primary(n, &err)) { if (err) { error_report_err(err); --=20 2.21.0