[dpdk-dev] [PATCH v2] app/test-crypto-perf: fix uninitialized scalar variable

[Aleksander Gajewski]

Fix problem with uninitialized nb_cryptodevs variable by
initialize it with 0 value. Program could jump to err label
without running cperf_initialize_cryptodev() function. Also assign 0
value to nb_cryptodevs after cperf_initialize_cryptodev() when value is
negative.

Coverity issue: 141073
Fixes: f8be1786b1b8 ("app/crypto-perf: introduce performance test
application")

Signed-off-by: Aleksander Gajewski <aleksanderx.gajewski at intel.com>
---
v2:
 * When nb_cryptodevs is negative after cperf_initialize_cryptodev()
assign 0 value to it.
---
 app/test-crypto-perf/main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/app/test-crypto-perf/main.c b/app/test-crypto-perf/main.c
index 6c128d8..08bf5e4 100644
--- a/app/test-crypto-perf/main.c
+++ b/app/test-crypto-perf/main.c
@@ -264,7 +264,7 @@
 
 	void *ctx[RTE_MAX_LCORE] = { };
 
-	int nb_cryptodevs;
+	int nb_cryptodevs = 0;
 	uint8_t cdev_id, i;
 	uint8_t enabled_cdevs[RTE_CRYPTO_MAX_DEVS] = { 0 };
 
@@ -300,6 +300,7 @@
 	if (nb_cryptodevs < 1) {
 		RTE_LOG(ERR, USER1, "Failed to initialise requested crypto "
 				"device type\n");
+		nb_cryptodevs = 0;
 		goto err;
 	}
 
@@ -397,7 +398,6 @@
 err:
 	i = 0;
 	RTE_LCORE_FOREACH_SLAVE(lcore_id) {
-
 		if (i == nb_cryptodevs)
 			break;
 
-- 
1.9.1

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