[PATCH v2] vhost: fix unchecked return value

[lihuisong (C)]

在 2022/6/29 17:07, Jiayu Hu 写道:
> This patch checks the return value of rte_dma_info_get()
> called in rte_vhost_async_dma_configure().
>
> Coverity issue: 379066
> Fixes: 53d3f4778c1d ("vhost: integrate dmadev in asynchronous data-path")
> Cc: stable at dpdk.org
>
> Signed-off-by: Jiayu Hu <jiayu.hu at intel.com>
> Reviewed-by: Chenbo Xia <chenbo.xia at intel.com>
> ---
> v2:
> - add cc stable tag
> ---
>   lib/vhost/vhost.c | 6 +++++-
>   1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/lib/vhost/vhost.c b/lib/vhost/vhost.c
> index b14521e4d1..70c04c036e 100644
> --- a/lib/vhost/vhost.c
> +++ b/lib/vhost/vhost.c
> @@ -1868,7 +1868,11 @@ rte_vhost_async_dma_configure(int16_t dma_id, uint16_t vchan_id)
>   		return -1;
>   	}
>   
> -	rte_dma_info_get(dma_id, &info);
> +	if (rte_dma_info_get(dma_id, &info) != 0) {
> +		VHOST_LOG_CONFIG(ERR, "Fail to get DMA %d information.\n", dma_id);
> +		return -1;
> +	}
> +
>   	if (vchan_id >= info.max_vchans) {
>   		VHOST_LOG_CONFIG(ERR, "Invalid DMA %d vChannel %u.\n", dma_id, vchan_id);
>   		return -1;
Reviewed-by: Huisong Li <lihuisong at huawei.com>