net/mvpp2: fix stack corruption

[ upstream commit 8ce3c5d ]

Fixes stack corruption in mrvl_fill_bpool function
in case num > MRVL_PP2_RXD_MAX

Fixes: c363725 ("net/mrvl: fix Rx descriptors number")

Signed-off-by: Yuri Chipchev <yuric@marvell.com>
Reviewed-by: Liron Himi <lironh@marvell.com>

drivers/net/mvpp2/mrvl_ethdev.c

@@ -1614,8 +1614,8 @@ mrvl_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
 static int
 mrvl_fill_bpool(struct mrvl_rxq *rxq, int num)
 {
-	struct buff_release_entry entries[MRVL_PP2_RXD_MAX];
-	struct rte_mbuf *mbufs[MRVL_PP2_RXD_MAX];
+	struct buff_release_entry entries[num];
+	struct rte_mbuf *mbufs[num];
 	int i, ret;
 	unsigned int core_id;
 	struct pp2_hif *hif;