From nobody Sun Feb 8 10:04:19 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; 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 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1525073274315105.17914335880812; Mon, 30 Apr 2018 00:27:54 -0700 (PDT) Received: from localhost ([::1]:58175 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fD3E1-0001bZ-JC for importer@patchew.org; Mon, 30 Apr 2018 03:27:53 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40539) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fD3DD-0001IE-Qs for qemu-devel@nongnu.org; Mon, 30 Apr 2018 03:27:04 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fD3DA-0002JG-Mq for qemu-devel@nongnu.org; Mon, 30 Apr 2018 03:27:03 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:60524 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fD3DA-0002Iu-Ir for qemu-devel@nongnu.org; Mon, 30 Apr 2018 03:27:00 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A3B48406DE36; Mon, 30 Apr 2018 07:26:51 +0000 (UTC) Received: from thh440s.redhat.com (ovpn-117-41.ams2.redhat.com [10.36.117.41]) by smtp.corp.redhat.com (Postfix) with ESMTP id 23BB321568B2; Mon, 30 Apr 2018 07:26:46 +0000 (UTC) From: Thomas Huth To: Jason Wang , qemu-devel@nongnu.org Date: Mon, 30 Apr 2018 09:26:45 +0200 Message-Id: <1525073205-22394-1-git-send-email-thuth@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Mon, 30 Apr 2018 07:26:52 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Mon, 30 Apr 2018 07:26:52 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'thuth@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH] net: Fix memory leak in net_param_nic() 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: Peter Maydell Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The early exits in case of errors leak the memory allocated for nd_id. Fix it by using a "goto out" to the cleanup at the end of the function instead. Signed-off-by: Thomas Huth Reviewed-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- net/net.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/net/net.c b/net/net.c index 29f8398..65457b7 100644 --- a/net/net.c +++ b/net/net.c @@ -1502,11 +1502,12 @@ static int net_param_nic(void *dummy, QemuOpts *opt= s, Error **errp) g_free(mac); if (ret) { error_setg(errp, "invalid syntax for ethernet address"); - return -1; + goto out; } if (is_multicast_ether_addr(ni->macaddr.a)) { error_setg(errp, "NIC cannot have multicast MAC address"); - return -1; + ret =3D -1; + goto out; } } qemu_macaddr_default_if_unset(&ni->macaddr); @@ -1518,6 +1519,7 @@ static int net_param_nic(void *dummy, QemuOpts *opts,= Error **errp) nb_nics++; } =20 +out: g_free(nd_id); return ret; } --=20 1.8.3.1