From patchwork Wed Jan 13 16:28:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Baum X-Patchwork-Id: 86486 X-Patchwork-Delegate: rasland@nvidia.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 88F25A04B5; Wed, 13 Jan 2021 17:29:26 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 65803140E41; Wed, 13 Jan 2021 17:29:26 +0100 (CET) Received: from mellanox.co.il (mail-il-dmz.mellanox.com [193.47.165.129]) by mails.dpdk.org (Postfix) with ESMTP id EFB8A140E40 for ; Wed, 13 Jan 2021 17:29:22 +0100 (CET) Received: from Internal Mail-Server by MTLPINE1 (envelope-from michaelba@nvidia.com) with SMTP; 13 Jan 2021 18:29:19 +0200 Received: from nvidia.com (pegasus07.mtr.labs.mlnx [10.210.16.112]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id 10DGSxIE008426; Wed, 13 Jan 2021 18:29:19 +0200 From: Michael Baum To: dev@dpdk.org Cc: Matan Azrad , Raslan Darawsheh , David Marchand , stable@dpdk.org Date: Wed, 13 Jan 2021 16:28:53 +0000 Message-Id: <1610555333-18961-3-git-send-email-michaelba@nvidia.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1610555333-18961-1-git-send-email-michaelba@nvidia.com> References: <1610555333-18961-1-git-send-email-michaelba@nvidia.com> Subject: [dpdk-dev] [PATCH 2/2] net/mlx4: fix PCI probe error flow X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" In mlx4 PCI probing, there are some validations for the Ethernet device configuration. From each PCI device the function creates one or two Ethernet devices. When one of validations fails during the creation of the second device, the first device is not freed what caused a memory leak. Free it. Fixes: 7fae69eeff13 ("mlx4: new poll mode driver") Cc: stable@dpdk.org Signed-off-by: Michael Baum Acked-by: Matan Azrad --- drivers/net/mlx4/mlx4.c | 27 ++++++++++++++++----------- 1 file changed, 16 insertions(+), 11 deletions(-) diff --git a/drivers/net/mlx4/mlx4.c b/drivers/net/mlx4/mlx4.c index 7460afa..92b0427 100644 --- a/drivers/net/mlx4/mlx4.c +++ b/drivers/net/mlx4/mlx4.c @@ -860,6 +860,7 @@ struct mlx4_conf { struct ibv_pd *pd = NULL; struct mlx4_priv *priv = NULL; struct rte_eth_dev *eth_dev = NULL; + struct rte_eth_dev *prev_dev = NULL; struct rte_ether_addr mac; char name[RTE_ETH_NAME_MAX_LEN]; @@ -880,7 +881,7 @@ struct mlx4_conf { ERROR("can not attach rte ethdev"); rte_errno = ENOMEM; err = rte_errno; - goto error; + goto err_secondary; } priv = eth_dev->data->dev_private; if (!priv->verbs_alloc_ctx.enabled) { @@ -889,24 +890,24 @@ struct mlx4_conf { " from Verbs"); rte_errno = ENOTSUP; err = rte_errno; - goto error; + goto err_secondary; } eth_dev->device = &pci_dev->device; eth_dev->dev_ops = &mlx4_dev_sec_ops; err = mlx4_proc_priv_init(eth_dev); if (err) - goto error; + goto err_secondary; /* Receive command fd from primary process. */ err = mlx4_mp_req_verbs_cmd_fd(eth_dev); if (err < 0) { err = rte_errno; - goto error; + goto err_secondary; } /* Remap UAR for Tx queues. */ err = mlx4_tx_uar_init_secondary(eth_dev, err); if (err) { err = rte_errno; - goto error; + goto err_secondary; } /* * Ethdev pointer is still required as input since @@ -918,7 +919,14 @@ struct mlx4_conf { claim_zero(mlx4_glue->close_device(ctx)); rte_eth_copy_pci_info(eth_dev, pci_dev); rte_eth_dev_probing_finish(eth_dev); + prev_dev = eth_dev; continue; +err_secondary: + claim_zero(mlx4_glue->close_device(ctx)); + rte_eth_dev_release_port(eth_dev); + if (prev_dev) + rte_eth_dev_release_port(prev_dev); + break; } /* Check port status. */ err = mlx4_glue->query_port(ctx, port, &port_attr); @@ -1093,6 +1101,7 @@ struct mlx4_conf { priv, mem_event_cb); rte_rwlock_write_unlock(&mlx4_shared_data->mem_event_rwlock); rte_eth_dev_probing_finish(eth_dev); + prev_dev = eth_dev; continue; port_error: rte_free(priv); @@ -1107,14 +1116,10 @@ struct mlx4_conf { eth_dev->data->mac_addrs = NULL; rte_eth_dev_release_port(eth_dev); } + if (prev_dev) + mlx4_dev_close(prev_dev); break; } - /* - * XXX if something went wrong in the loop above, there is a resource - * leak (ctx, pd, priv, dpdk ethdev) but we can do nothing about it as - * long as the dpdk does not provide a way to deallocate a ethdev and a - * way to enumerate the registered ethdevs to free the previous ones. - */ error: if (attr_ctx) claim_zero(mlx4_glue->close_device(attr_ctx));