[dpdk-dev] [PATCH v2] app/testpmd: fix copying the name of the dynflag

[Ori Kam <orika@mellanox.com>]

When working with testpmd and setting the dynflag name, we copy the
name given by the cmd to the dynflag name.

The issue is that the size of the dynflag name is smaller then the
string used by testpmd.

This commit solves this issue by checking if the requested name
is too long.

Coverity issue: 353610

Fixes: b57b66a97ebf ("app/testpmd: support mbuf dynamic flag")

Signed-off-by: Ori Kam <orika@mellanox.com>
---
V2:
 * Move len check to start of function.
---
 app/test-pmd/cmdline.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index dab22bc..de5ef41 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -18865,6 +18865,10 @@ struct cmd_config_tx_dynf_specific_result {
 
 	if (port_id_is_invalid(res->port_id, ENABLED_WARN))
 		return;
+	if (strlen(res->name) > sizeof(desc_flag.name)) {
+		printf("Flag name too long\n");
+		return;
+	}	
 	flag = rte_mbuf_dynflag_lookup(res->name, NULL);
 	if (flag <= 0) {
 		strcpy(desc_flag.name, res->name);
-- 
1.8.3.1