Re: [dpdk-dev] [PATCH v2 7/8] ipc: fix net/mlx4 memleak

[Yongseok Koh <yskoh@mellanox.com>]

> On Apr 23, 2019, at 10:43 AM, Herakliusz Lipiec <herakliusz.lipiec@intel.com> wrote:
> 
> When sending synchronous IPC requests, the caller must free the response 
> buffer even if the request returned failure. Fix the code to correctly 
> use the IPC API.
> 
> Bugzilla ID:228
> Fixes: 0b259b8e9655 ("net/mlx4: enable secondary process to register DMA memory")
> Cc: yskoh@mellanox.com
> Signed-off-by: Herakliusz Lipiec <herakliusz.lipiec@intel.com>
> ---
Acked-by: Yongseok Koh <yskoh@mellanox.com>

> drivers/net/mlx4/mlx4_mp.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/mlx4/mlx4_mp.c b/drivers/net/mlx4/mlx4_mp.c
> index 183622453..f4cff7486 100644
> --- a/drivers/net/mlx4/mlx4_mp.c
> +++ b/drivers/net/mlx4/mlx4_mp.c
> @@ -255,6 +255,7 @@ mlx4_mp_req_mr_create(struct rte_eth_dev *dev, uintptr_t addr)
> 	if (ret) {
> 		ERROR("port %u request to primary process failed",
> 		      dev->data->port_id);
> +		free(mp_rep.msgs);
> 		return -rte_errno;
> 	}
> 	assert(mp_rep.nb_received == 1);
> @@ -292,7 +293,8 @@ mlx4_mp_req_verbs_cmd_fd(struct rte_eth_dev *dev)
> 	if (ret) {
> 		ERROR("port %u request to primary process failed",
> 		      dev->data->port_id);
> -		return -rte_errno;
> +		ret = -rte_errno;
> +		goto exit;
> 	}
> 	assert(mp_rep.nb_received == 1);
> 	mp_res = &mp_rep.msgs[0];
> -- 
> 2.17.2
>