[dpdk-dev] [PATCH] common/dpaax: fix possible null pointer access

[Hemant Agrawal]

On 4/21/2021 8:16 AM, Min Hu (Connor) wrote:
> From: Chengwen Feng <fengchengwen at huawei.com>
>
> This patch fixes possible null pointer access when dump iova table.
>
> Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")
> Cc: stable at dpdk.org
>
> Signed-off-by: Chengwen Feng <fengchengwen at huawei.com>
> Signed-off-by: Min Hu (Connor) <humin29 at huawei.com>
> ---
>   drivers/common/dpaax/dpaax_iova_table.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/common/dpaax/dpaax_iova_table.c b/drivers/common/dpaax/dpaax_iova_table.c
> index 91bee65..54f89e1 100644
> --- a/drivers/common/dpaax/dpaax_iova_table.c
> +++ b/drivers/common/dpaax/dpaax_iova_table.c
> @@ -366,8 +366,10 @@ dpaax_iova_table_dump(void)
>   	}
>   
>   	DPAAX_DEBUG(" === Start of PA->VA Translation Table ===");
> -	if (dpaax_iova_table_p == NULL)
> +	if (dpaax_iova_table_p == NULL) {
>   		DPAAX_DEBUG("\tNULL");
> +		return;
> +	}
>   
>   	entry = dpaax_iova_table_p->entries;
>   	for (i = 0; i < dpaax_iova_table_p->count; i++) {
Acked-by: Hemant Agrawal <hemant.agrawal at nxp.com>