[PATCH] app/graph: fix overrun error (destination buffer too small)

[Khadem Ullah <14pwcse1224@uetpeshawar.edu.pk>]

Some memory locations will be written with incorrect values,
possibly corrupting data structures or data integrity.
Size of destination buffer is smaller than the size
argument specified.

Coverity issue: 415430
Fixes: 3850cb06ab9c ('app/graph: add ethdev commands')
Cc: stable@dpdk.org

Signed-off-by: Khadem Ullah <14pwcse1224@uetpeshawar.edu.pk>
---
 app/graph/ethdev.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/app/graph/ethdev.c b/app/graph/ethdev.c
index 2f4cf65c96..f6d4bce9ab 100644
--- a/app/graph/ethdev.c
+++ b/app/graph/ethdev.c
@@ -663,11 +663,12 @@ cmd_ethdev_parsed(void *parsed_result, __rte_unused struct cmdline *cl, void *da
 	struct cmd_ethdev_result *res = parsed_result;
 	struct ethdev_config config;
 	int rc;
-
+	size_t len;
 	memset(&config, 0, sizeof(struct ethdev_config));
 	config.rx.n_queues = res->nb_rxq;
 	config.rx.queue_size = ETHDEV_RX_DESC_DEFAULT;
-	memcpy(config.rx.mempool_name, res->mempool, strlen(res->mempool));
+	len = strnlen(res->mempool, sizeof(config.rx.mempool_name));
+	memcpy(config.rx.mempool_name, res->mempool, len);
 
 	config.tx.n_queues = res->nb_txq;
 	config.tx.queue_size = ETHDEV_TX_DESC_DEFAULT;
-- 
2.43.0