Re: [dpdk-dev] [PATCH] net/ixgbe:fix some bugs about rte zmalloc memory may NULL

[Ferruh Yigit <ferruh.yigit@intel.com>]

On 8/22/2017 12:49 PM, Rongqiang XIE wrote:
> In the function ixgbe_flow_create(), the value ntuple_filter_ptr,
> ethertype_filter_ptr,syn_filter_ptr,fdir_rule_ptr and l2_tn_filter_ptr
> use rte_zmalloc() malloc memory may return NULL,so, we should
> add judge the return is NULL or success.
> 
> Signed-off-by: Rongqiang XIE <xie.rongqiang@zte.com.cn>

Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>

> ---
>  drivers/net/ixgbe/ixgbe_flow.c | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/drivers/net/ixgbe/ixgbe_flow.c b/drivers/net/ixgbe/ixgbe_flow.c
> index d679608..c8645f0 100644
> --- a/drivers/net/ixgbe/ixgbe_flow.c
> +++ b/drivers/net/ixgbe/ixgbe_flow.c
> @@ -2707,6 +2707,10 @@ static inline uint8_t signature_match(const struct rte_flow_item pattern[])
>  		if (!ret) {
>  			ntuple_filter_ptr = rte_zmalloc("ixgbe_ntuple_filter",
>  				sizeof(struct ixgbe_ntuple_filter_ele), 0);
> +			if (!ntuple_filter_ptr) {
> +				PMD_DRV_LOG(ERR, "failed to allocate memory");
> +				goto out;
> +			}
>  			(void)rte_memcpy(&ntuple_filter_ptr->filter_info,
>  				&ntuple_filter,
>  				sizeof(struct rte_eth_ntuple_filter));
> @@ -2729,6 +2733,10 @@ static inline uint8_t signature_match(const struct rte_flow_item pattern[])
>  			ethertype_filter_ptr = rte_zmalloc(
>  				"ixgbe_ethertype_filter",
>  				sizeof(struct ixgbe_ethertype_filter_ele), 0);
> +			if (!ethertype_filter_ptr) {
> +				PMD_DRV_LOG(ERR, "failed to allocate memory");
> +				goto out;

In out path, these variables should be freed which seems missing, would
you mind another patch to fix this?

> +			}
>  			(void)rte_memcpy(&ethertype_filter_ptr->filter_info,
>  				&ethertype_filter,
>  				sizeof(struct rte_eth_ethertype_filter));

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