Re: [dpdk-dev] [PATCH] net/virtio: fix memory leak of interrupt handle

["Xia, Chenbo" <chenbo.xia@intel.com>]

Hi Gaoxiang,

> -----Original Message-----
> From: Gaoxiang Liu <clgx0086@163.com>
> Sent: Monday, July 26, 2021 10:42 PM
> To: Xia, Chenbo <chenbo.xia@intel.com>; dev@dpdk.org; liugaoxiang@huawei.com
> Cc: Gaoxiang Liu <clgx0086@163.com>
> Subject: [PATCH] net/virtio: fix memory leak of interrupt handle
> 
> Free memory of interrupt handle in virtio_user_dev_uninit() to
> avoid memory leak.
> when virtio user dev closes, memory of interrupt handle is not freed
> that is allocated in virtio_user_fill_intr_handle().
> 
> Fixes: 3d4fb6fd2505 <"net/virtio-user: support Rx interrupt">
> 

Please note two things here:

1. Next time you send a v2 patch, please add the prefix like:
	[v2] net/virtio: fix memory leak of interrupt handle

2. We prefer '()' rather than '<>' for fix line and you may miss one comment
that we need cc stable tag for most fixes:
	Fixes: 3d4fb6fd2505 ("net/virtio-user: support Rx interrupt")
	Cc: stable@dpdk.org

And no need to send v3, I will help you fix it when applying. Welcome to DPDK!

For this patch:

Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>

> Signed-off-by: Gaoxiang Liu <clgx0086@163.com>
> ---
>  drivers/net/virtio/virtio_user/virtio_user_dev.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c
> b/drivers/net/virtio/virtio_user/virtio_user_dev.c
> index 1cd1e95f4..16c58710d 100644
> --- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
> +++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
> @@ -654,6 +654,13 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char
> *path, int queues,
>  void
>  virtio_user_dev_uninit(struct virtio_user_dev *dev)
>  {
> +	struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->hw.port_id];
> +
> +	if (eth_dev->intr_handle) {
> +		free(eth_dev->intr_handle);
> +		eth_dev->intr_handle = NULL;
> +	}
> +
>  	virtio_user_stop_device(dev);
> 
>  	rte_mem_event_callback_unregister(VIRTIO_USER_MEM_EVENT_CLB_NAME, dev);
> --
> 2.32.0