[dpdk-stable] [PATCH 20.11] net/i40e: fix vf resource leakage problem

[Xing, Beilei]

> -----Original Message-----
> From: Qiming Chen <chenqiming_huawei at 163.com>
> Sent: Monday, September 6, 2021 3:12 PM
> To: stable at dpdk.org
> Cc: Xing, Beilei <beilei.xing at intel.com>; Qiming Chen
> <chenqiming_huawei at 163.com>
> Subject: [PATCH 20.11] net/i40e: fix vf resource leakage problem
Please also refine the title.

> 
> In the i40evf_dev_init function, when the MAC memory alloc fails, the
> previously initialized vf resource is not released, resulting in leakage.
> The patch calls the i40evf_uninit_vf function in the abnormal branch to
> release resources.
> 
> Fixes: 5c9222058df7 ("i40e: move to drivers/net/")
The fix commit should be " i40e: new poll mode driver".

> Cc: stable at dpdk.org
> 
> Signed-off-by: Qiming Chen <chenqiming_huawei at 163.com>
> ---
>  drivers/net/i40e/i40e_ethdev_vf.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/i40e/i40e_ethdev_vf.c
> b/drivers/net/i40e/i40e_ethdev_vf.c
> index 003d41373b..f64db72e9a 100644
> --- a/drivers/net/i40e/i40e_ethdev_vf.c
> +++ b/drivers/net/i40e/i40e_ethdev_vf.c
> @@ -1622,6 +1622,7 @@ i40evf_dev_init(struct rte_eth_dev *eth_dev)
>  		PMD_INIT_LOG(ERR, "Failed to allocate %d bytes needed to"
>  				" store MAC addresses",
>  				RTE_ETHER_ADDR_LEN *
> I40E_NUM_MACADDR_MAX);
> +		(void)i40evf_uninit_vf(eth_dev);
>  		return -ENOMEM;
>  	}
>  	rte_ether_addr_copy((struct rte_ether_addr *)hw->mac.addr,
> --
> 2.30.1.windows.1