[PATCH v3] net/mlx5: fix matcher object memory leak

[Bing Zhao]

Hi,


> -----Original Message-----
> From: Mahmoud Maatuq <mahmoudmatook.mm at gmail.com>
> Sent: Wednesday, July 3, 2024 4:15 AM
> To: Dariusz Sosnowski <dsosnowski at nvidia.com>; Slava Ovsiienko
> <viacheslavo at nvidia.com>; Bing Zhao <bingz at nvidia.com>; Ori Kam
> <orika at nvidia.com>; Suanming Mou <suanmingm at nvidia.com>; Matan Azrad
> <matan at nvidia.com>; Maayan Kashani <mkashani at nvidia.com>
> Cc: dev at dpdk.org; Mahmoud Maatuq <mahmoudmatook.mm at gmail.com>
> Subject: [PATCH v3] net/mlx5: fix matcher object memory leak
> 
> External email: Use caution opening links or attachments
> 
> 
> This makes sure that the allocated matcher object is freed for all
> branches that return NULL.
> 
> Coverity issue: 426424
> Fixes: 27d171b88031 ("net/mlx5: abstract flow action and enable
> reconfigure")
> Cc: mkashani at nvidia.com
> 
> Signed-off-by: Mahmoud Maatuq <mahmoudmatook.mm at gmail.com>
> ---
> v3:
> * changed commit message.
> * fixed typos
> v2:
> * fixed Fixes and Cc tags.
> ---
>  drivers/net/mlx5/mlx5_flow_dv.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/mlx5/mlx5_flow_dv.c
> b/drivers/net/mlx5/mlx5_flow_dv.c index d46beffd4c..8a0d58cb05 100644
> --- a/drivers/net/mlx5/mlx5_flow_dv.c
> +++ b/drivers/net/mlx5/mlx5_flow_dv.c
> @@ -12010,9 +12010,12 @@ flow_matcher_create_cb(void *tool_ctx, void
> *cb_ctx)
>                 items = *((const struct rte_flow_item **)(ctx->data2));
>                 resource->matcher_object = mlx5dr_bwc_matcher_create
>                                 (resource->group->tbl, resource->priority,
> items);
> -               if (!(resource->matcher_object))
> +               if (!resource->matcher_object) {
> +                       mlx5_free(resource);
>                         return NULL;
> +               }
>  #else
> +               mlx5_free(resource);
>                 return NULL;
>  #endif
>         }
> --
> 2.43.0

Acked-by: Bing Zhao <bingz at nvidia.com>