[dpdk-dev] [PATCH 1/3] net/mlx5: fix buffer allocation check in rule cleanup

[Yongseok Koh]

> On Nov 10, 2018, at 1:59 AM, Slava Ovsiienko <viacheslavo at mellanox.com> wrote:
> 
> The Netlink message buffer is allocated and there is the typo,
> the other pointer is checked instead of returned one. If no
> memory is allocated and NULL is returned by allocation routine
> the bug causes segmentation fault. The patch fixes typo,
> returned pointer is validated.
> 
> Fixes: f420f03d6772 ("net/mlx5: add E-switch VXLAN rule cleanup routines")
> 
> Signed-off-by: Viacheslav Ovsiienko <viacheslavo at mellanox.com>
> ---

Acked-by: Yongseok Koh <yskoh at mellanox.com>
 
Thanks

> drivers/net/mlx5/mlx5_flow_tcf.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/mlx5/mlx5_flow_tcf.c b/drivers/net/mlx5/mlx5_flow_tcf.c
> index fb817b2..ba0674a 100644
> --- a/drivers/net/mlx5/mlx5_flow_tcf.c
> +++ b/drivers/net/mlx5/mlx5_flow_tcf.c
> @@ -4226,7 +4226,7 @@ struct tcf_nlcb_context {
> 	vxindex = ifm->ifi_index;
> 	cmd = flow_tcf_alloc_nlcmd(ctx, MNL_ALIGN(sizeof(struct nlmsghdr)) +
> 					MNL_ALIGN(sizeof(struct ifinfomsg)));
> -	if (!nlh) {
> +	if (!cmd) {
> 		rte_errno = ENOMEM;
> 		return -rte_errno;
> 	}
> -- 
> 1.8.3.1
>