[PATCH v2 20/44] net/mana: fix segment fault when parse devargs

[Chengwen Feng]

The rte_kvargs_process() was used to parse KV pairs, it also supports
to parse 'only keys' (e.g. socket_id) type. And the callback function
parameter 'value' is NULL when parsed 'only keys'.

This patch fixes segment fault when parse input args with 'only keys'.

Fixes: 517ed6e2d590 ("net/mana: add basic driver with build environment")
Cc: stable at dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen at huawei.com>
---
 drivers/net/mana/mana.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/mana/mana.c b/drivers/net/mana/mana.c
index 8a782c0d63..9c097c02ba 100644
--- a/drivers/net/mana/mana.c
+++ b/drivers/net/mana/mana.c
@@ -750,6 +750,9 @@ mana_arg_parse_callback(const char *key, const char *val, void *private)
 		return 1;
 	}
 
+	if (val == NULL)
+		return -EINVAL;
+
 	ret = rte_ether_unformat_addr(val, &conf->mac_array[conf->index]);
 	if (ret) {
 		DRV_LOG(ERR, "Invalid MAC address %s", val);
-- 
2.17.1