netdev - Re: [net 12/15] net/mlx5e: MACsec, fix add Rx security association (SA) rule memory leak

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Date:   Mon, 28 Nov 2022 15:37:59 -0800
From:   Jacob Keller <jacob.e.keller@...el.com>
To:     Saeed Mahameed <saeed@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>
CC:     Saeed Mahameed <saeedm@...dia.com>, <netdev@...r.kernel.org>,
        Tariq Toukan <tariqt@...dia.com>,
        Emeel Hakim <ehakim@...dia.com>, Raed Salem <raeds@...dia.com>
Subject: Re: [net 12/15] net/mlx5e: MACsec, fix add Rx security association
 (SA) rule memory leak



On 11/24/2022 12:10 AM, Saeed Mahameed wrote:
> From: Emeel Hakim <ehakim@...dia.com>
> 
> Currently MACsec's add Rx SA flow steering (fs) rule routine
> uses a spec object which is dynamically allocated and do
> not free it upon leaving. The above led to a memory leak.
> 
> Fix by freeing dynamically allocated objects.
> 
> Fixes: 3b20949cb21b ("net/mlx5e: Add MACsec RX steering rules")
> Signed-off-by: Emeel Hakim <ehakim@...dia.com>
> Reviewed-by: Raed Salem <raeds@...dia.com>
> Signed-off-by: Saeed Mahameed <saeedm@...dia.com>

Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>

> ---
>   drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec_fs.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec_fs.c
> index f87a1c4021bc..5b658a5588c6 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec_fs.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec_fs.c
> @@ -1209,6 +1209,7 @@ macsec_fs_rx_add_rule(struct mlx5e_macsec_fs *macsec_fs,
>   		rx_rule->rule[1] = rule;
>   	}
>   
> +	kvfree(spec);
>   	return macsec_rule;
>   
>   err: