From patchwork Thu Oct 22 00:34:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Christie X-Patchwork-Id: 11849977 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 8F9771580 for ; Thu, 22 Oct 2020 00:35:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6B3E522249 for ; Thu, 22 Oct 2020 00:35:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="R8FHgGQ+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2507541AbgJVAfR (ORCPT ); Wed, 21 Oct 2020 20:35:17 -0400 Received: from aserp2120.oracle.com ([141.146.126.78]:43246 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2507542AbgJVAfR (ORCPT ); Wed, 21 Oct 2020 20:35:17 -0400 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 09M0TELr092876; Thu, 22 Oct 2020 00:35:13 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : subject : date : message-id : in-reply-to : references; s=corp-2020-01-29; bh=Wi7RtYH0fZg2S+uVbL6yjJO6oNhjvPLtXETQITgty8o=; b=R8FHgGQ+Hfos/cxfESk1lde6ibZyy3lWPk2h1yPVWd49YRps3NKsFzZD/LsXVOdYMtyI b73SCekBV/8PriAZPhN+spZmC1OfDsMp5mkWVDqfLyKeTeBcA1DxrBgORd8UfnC+nd8K xTH+BmbBlJXJUISMbAlbYQ5IxalyG7F7Gij91i08XHEYyaGh02PvpwR2UPI4/eGzj5SI f1iA9vA1jx4nBOUXWvauk9qRpX8RQ315OVyM+P4bENaUlFtMOdTq5W7FF+dqqLiewNxe CiUpRgA9pRbDLB5DSXGnNsBCDIlBo7ssQTzlxaB8vYuOMxgZNP9pLrysUIU8gl07Szos cg== Received: from aserp3030.oracle.com (aserp3030.oracle.com [141.146.126.71]) by aserp2120.oracle.com with ESMTP id 349jrpuft0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 22 Oct 2020 00:35:13 +0000 Received: from pps.filterd (aserp3030.oracle.com [127.0.0.1]) by aserp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 09M0U6gt177063; Thu, 22 Oct 2020 00:35:13 GMT Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by aserp3030.oracle.com with ESMTP id 348a6q15rd-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 22 Oct 2020 00:35:13 +0000 Received: from abhmp0014.oracle.com (abhmp0014.oracle.com [141.146.116.20]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 09M0ZCPa029942; Thu, 22 Oct 2020 00:35:12 GMT Received: from ol2.localdomain (/73.88.28.6) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 21 Oct 2020 17:35:12 -0700 From: Mike Christie To: martin.petersen@oracle.com, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, mst@redhat.com, jasowang@redhat.com, pbonzini@redhat.com, stefanha@redhat.com, virtualization@lists.linux-foundation.org Subject: [PATCH 03/17] vhost net: use goto error handling in open Date: Wed, 21 Oct 2020 19:34:49 -0500 Message-Id: <1603326903-27052-4-git-send-email-michael.christie@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1603326903-27052-1-git-send-email-michael.christie@oracle.com> References: <1603326903-27052-1-git-send-email-michael.christie@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9781 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 mlxlogscore=999 bulkscore=0 spamscore=0 adultscore=0 suspectscore=0 mlxscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2010220001 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9781 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 phishscore=0 lowpriorityscore=0 priorityscore=1501 impostorscore=0 adultscore=0 bulkscore=0 malwarescore=0 mlxlogscore=999 mlxscore=0 spamscore=0 suspectscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2010220001 Precedence: bulk List-ID: X-Mailing-List: target-devel@vger.kernel.org In the next patches vhost_dev_init will be able to fail. This patch has vhost_net_open use goto error handling like is done in the other vhost code to make handling vhost_dev_init failures easier to handle and extend in the future. Signed-off-by: Mike Christie Reviewed-by: Chaitanya Kulkarni Acked-by: Jason Wang --- drivers/vhost/net.c | 29 ++++++++++++++--------------- 1 file changed, 14 insertions(+), 15 deletions(-) diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 531a00d..831d824 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -1286,27 +1286,18 @@ static int vhost_net_open(struct inode *inode, struct file *f) if (!n) return -ENOMEM; vqs = kmalloc_array(VHOST_NET_VQ_MAX, sizeof(*vqs), GFP_KERNEL); - if (!vqs) { - kvfree(n); - return -ENOMEM; - } + if (!vqs) + goto err_vqs; queue = kmalloc_array(VHOST_NET_BATCH, sizeof(void *), GFP_KERNEL); - if (!queue) { - kfree(vqs); - kvfree(n); - return -ENOMEM; - } + if (!queue) + goto err_queue; n->vqs[VHOST_NET_VQ_RX].rxq.queue = queue; xdp = kmalloc_array(VHOST_NET_BATCH, sizeof(*xdp), GFP_KERNEL); - if (!xdp) { - kfree(vqs); - kvfree(n); - kfree(queue); - return -ENOMEM; - } + if (!xdp) + goto err_xdp; n->vqs[VHOST_NET_VQ_TX].xdp = xdp; dev = &n->dev; @@ -1338,6 +1329,14 @@ static int vhost_net_open(struct inode *inode, struct file *f) n->refcnt_bias = 0; return 0; + +err_xdp: + kfree(queue); +err_queue: + kfree(vqs); +err_vqs: + kvfree(n); + return -ENOMEM; } static struct socket *vhost_net_stop_vq(struct vhost_net *n,