[PATCH v2] net/af_xdp: fix memzone leak in error path

[Loftus, Ciara]

> 
> In xdp_umem_configure() allocated memzone for the 'umem', we should
> free it when xsk_umem__create() call fails, otherwise it will lead to
> memory zone leak. To fix it move 'umem->mz = mz;' assignment after
> 'mz == NULL' check.
> 
> Fixes: f1debd77efaf ("net/af_xdp: introduce AF_XDP PMD")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Yunjian Wang <wangyunjian at huawei.com>
> ---
> v2: update code suggested by Ferruh Yigit
> ---
>  drivers/net/af_xdp/rte_eth_af_xdp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c
> b/drivers/net/af_xdp/rte_eth_af_xdp.c
> index 353c8688ec..9f0f751d4a 100644
> --- a/drivers/net/af_xdp/rte_eth_af_xdp.c
> +++ b/drivers/net/af_xdp/rte_eth_af_xdp.c
> @@ -1235,6 +1235,7 @@ xsk_umem_info *xdp_umem_configure(struct
> pmd_internals *internals,
>  		goto err;
>  	}
> 
> +	umem->mz = mz;
>  	ret = xsk_umem__create(&umem->umem, mz->addr,
>  			       ETH_AF_XDP_NUM_BUFFERS *
> ETH_AF_XDP_FRAME_SIZE,
>  			       &rxq->fq, &rxq->cq,
> @@ -1244,7 +1245,6 @@ xsk_umem_info *xdp_umem_configure(struct
> pmd_internals *internals,
>  		AF_XDP_LOG(ERR, "Failed to create umem\n");
>  		goto err;
>  	}
> -	umem->mz = mz;
> 
>  	return umem;
> 
> --
> 2.33.0

Thank you for the patch.

Acked-by: Ciara Loftus <ciara.loftus at intel.com>