[PATCH] net/mlx5: fix memleak for resource object

[Dariusz Sosnowski]

Hi,

Thank you very much for the fix.

Could you please provide the commit message explaining the problem reported by Coverity and the fix?

> -----Original Message-----
> From: Mahmoud Maatuq <mahmoudmatook.mm at gmail.com>
> Sent: Sunday, June 23, 2024 12:36
> 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>
> Cc: dev at dpdk.org; Mahmoud Maatuq <mahmoudmatook.mm at gmail.com>
> Subject: [PATCH] net/mlx5: fix memleak for resource object
> 
> Coverity issue: 426424
> Fixes: e78e5408da89 ("net/mlx5: remove cache term from the list utility")

The issue was introduced in commit 27d171b88031 ("net/mlx5: abstract flow action and enable reconfigure").
Fixes tag should reference that commit.

> Cc: matan at nvidia.com
> 
> Signed-off-by: Mahmoud Maatuq <mahmoudmatook.mm at gmail.com>
> ---
>  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..1010b8e423 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)) {

While we're at it, could you please remove the parentheses around resource->matcher_object? They're redundant.

> +                       mlx5_free(resource);
>                         return NULL;
> +               }
>  #else
> +               mlx5_free(resource);
>                 return NULL;
>  #endif
>         }
> --
> 2.43.0

Best regards,
Dariusz Sosnowski