[dpdk-dev] [PATCH v1] examples/vhost: fix missing args length check

[Cheng Jiang]

Add args length check before copying to fix the coverity issue.

Fixes: 3a04ecb21420 ("examples/vhost: add async vhost args parsing")
Coverity issue: 363741

Signed-off-by: Cheng Jiang <Cheng1.jiang at intel.com>
---
 examples/vhost/main.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/examples/vhost/main.c b/examples/vhost/main.c
index 59a1aff07c..ec88874d16 100644
--- a/examples/vhost/main.c
+++ b/examples/vhost/main.c
@@ -634,6 +634,12 @@ us_vhost_parse_args(int argc, char **argv)
 
 			if (!strncmp(long_option[option_index].name,
 						"dma-type", MAX_LONG_OPT_SZ)) {
+				if (strlen(optarg) >= MAX_LONG_OPT_SZ) {
+					RTE_LOG(INFO, VHOST_CONFIG,
+						"Wrong DMA type\n");
+					us_vhost_usage(prgname);
+					return -1;
+				}
 				strcpy(dma_type, optarg);
 			}
 
-- 
2.29.2