>Subject: [dpdk-dev] [PATCH v2] net/netvsc: fix txq leak in error path
>
>From: Yunjian Wang <wangyunj...@huawei.com>
>
>In hn_dev_tx_queue_setup() allocated memory for txq, we don't free it
>when error happens and it will lead to memory leak.
>
>We can check for tx_free_thresh at the beginning of the function to fix it,
>before calling txq = rte_zmalloc_socket().
>
>Fixes: cc0251813277 ("net/netvsc: split send buffers from Tx descriptors")
>Cc: sta...@dpdk.org
>
>Signed-off-by: Yunjian Wang <wangyunj...@huawei.com>
Acked-by: Long Li <lon...@microsoft.com>
>---
>v2:
> fix code styles suggested by Long Li
>---
> drivers/net/netvsc/hn_rxtx.c | 19 +++++++++----------
> 1 file changed, 9 insertions(+), 10 deletions(-)
>
>diff --git a/drivers/net/netvsc/hn_rxtx.c b/drivers/net/netvsc/hn_rxtx.c
>index 65f1abae5..5d59db513 100644
>--- a/drivers/net/netvsc/hn_rxtx.c
>+++ b/drivers/net/netvsc/hn_rxtx.c
>@@ -252,16 +252,6 @@ hn_dev_tx_queue_setup(struct rte_eth_dev *dev,
>
> PMD_INIT_FUNC_TRACE();
>
>- txq = rte_zmalloc_socket("HN_TXQ", sizeof(*txq),
>RTE_CACHE_LINE_SIZE,
>- socket_id);
>- if (!txq)
>- return -ENOMEM;
>-
>- txq->hv = hv;
>- txq->chan = hv->channels[queue_idx];
>- txq->port_id = dev->data->port_id;
>- txq->queue_id = queue_idx;
>-
> tx_free_thresh = tx_conf->tx_free_thresh;
> if (tx_free_thresh == 0)
> tx_free_thresh = RTE_MIN(nb_desc / 4, @@ -276,6 +266,15
>@@ hn_dev_tx_queue_setup(struct rte_eth_dev *dev,
> return -EINVAL;
> }
>
>+ txq = rte_zmalloc_socket("HN_TXQ", sizeof(*txq),
>RTE_CACHE_LINE_SIZE,
>+ socket_id);
>+ if (!txq)
>+ return -ENOMEM;
>+
>+ txq->hv = hv;
>+ txq->chan = hv->channels[queue_idx];
>+ txq->port_id = dev->data->port_id;
>+ txq->queue_id = queue_idx;
> txq->free_thresh = tx_free_thresh;
>
> snprintf(name, sizeof(name),
>--
>2.23.0
