Return value of a function 'rte_zmalloc' is dereferenced without
checking, and it may call segmentation fault.

This patch fixed it.

Fixes: f8be1786b1b8 ("app/crypto-perf: introduce performance test application")
Cc: stable@dpdk.org

Signed-off-by: Min Hu (Connor) <redacted>
---
v3:
* fix compiling warning.
---
 app/test-crypto-perf/cperf_options_parsing.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/app/test-crypto-perf/cperf_options_parsing.c b/app/test-crypto-perf/cperf_options_parsing.c
index 40b6dfb..e84f56c 100644
--- a/app/test-crypto-perf/cperf_options_parsing.c
+++ b/app/test-crypto-perf/cperf_options_parsing.c

@@ -506,6 +506,12 @@ parse_test_name(struct cperf_options *opts,
 {
 	char *test_name = (char *) rte_zmalloc(NULL,
 		sizeof(char) * (strlen(arg) + 3), 0);
+	if (test_name == NULL) {
+		RTE_LOG(ERR, USER1, "Failed to rte zmalloc with size: %zu\n",
+			strlen(arg) + 3);
+		return -1;
+	}
+
 	snprintf(test_name, strlen(arg) + 3, "[%s]", arg);
 	opts->test_name = test_name;
 

-- 
2.7.4