examples/bbdev: fix memory leak in stats print

xstats and xstats_names buffers were allocated for
the purpose of printing eth_xstats, but were not
freed before exit.
A fix is added to free before exit points.

Coverity issue: 257013
Fixes: 1ffee690eaa1 ("examples/bbdev: add sample app")

Signed-off-by: Amr Mokhtar <amr.mokhtar@intel.com>

diff --git a/examples/bbdev_app/main.c b/examples/bbdev_app/main.c
index a2835a4..e779db2 100644 (file)
--- a/examples/bbdev_app/main.c
+++ b/examples/bbdev_app/main.c
@@ -585,21 +585,28 @@ print_stats(struct stats_lcore_params *stats_lcore)
                                "Failed to calloc memory for xstats");
 
        ret = rte_eth_xstats_get(port_id, xstats, len);
-       if (ret < 0 || ret > len)
+       if (ret < 0 || ret > len) {
+               free(xstats);
                rte_exit(EXIT_FAILURE,
                                "rte_eth_xstats_get(%u) len%i failed: %d",
                                port_id, len, ret);
+       }
 
        xstats_names = calloc(len, sizeof(*xstats_names));
-       if (xstats_names == NULL)
+       if (xstats_names == NULL) {
+               free(xstats);
                rte_exit(EXIT_FAILURE,
                                "Failed to calloc memory for xstats_names");
+       }
 
        ret = rte_eth_xstats_get_names(port_id, xstats_names, len);
-       if (ret < 0 || ret > len)
+       if (ret < 0 || ret > len) {
+               free(xstats);
+               free(xstats_names);
                rte_exit(EXIT_FAILURE,
                                "rte_eth_xstats_get_names(%u) len%i failed: %d",
                                port_id, len, ret);
+       }
 
        for (i = 0; i < len; i++) {
                if (xstats[i].value > 0)
@@ -630,6 +637,9 @@ print_stats(struct stats_lcore_params *stats_lcore)
                        continue;
                print_lcore_stats(stats_lcore->lconf[l_id].lcore_stats, l_id);
        }
+
+       free(xstats);
+       free(xstats_names);
 }
 
 static int