Re: [dpdk-dev] [PATCH] graph_stats: do not use a possibly NULL Pointer

[Jerin Jacob <jerinjacobk@gmail.com>]

On Mon, May 24, 2021 at 2:28 PM Thierry Herbelot
<thierry.herbelot@6wind.com> wrote:
>
> Use stats only after it was checked not to be NULL.

Please change the subject to graph: ......

With the above fix:

Acked-by: Jerin Jacob <jerinj@marvell.com>

>
> Fixes: af1ae8b6a32c9 ("graph: implement stats")
> Cc: stable@dpdk.org
> Cc: Jerin Jacob <jerinj@marvell.com>
> Cc: Kiran Kumar K <kirankumark@marvell.com>
>
> Signed-off-by: Thierry Herbelot <thierry.herbelot@6wind.com>
> ---
>  lib/graph/graph_stats.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/lib/graph/graph_stats.c b/lib/graph/graph_stats.c
> index 125e08d73290..a52994f0f61e 100644
> --- a/lib/graph/graph_stats.c
> +++ b/lib/graph/graph_stats.c
> @@ -119,8 +119,8 @@ stats_mem_init(struct cluster *cluster,
>         cluster_node_size = RTE_ALIGN(cluster_node_size, RTE_CACHE_LINE_SIZE);
>
>         stats = realloc(NULL, sz);
> -       memset(stats, 0, sz);
>         if (stats) {
> +               memset(stats, 0, sz);
>                 stats->fn = fn;
>                 stats->cluster_node_size = cluster_node_size;
>                 stats->max_nodes = 0;
> --
> 2.29.2
>