graph: fix memory leak in stats

Fix function 'stats_mem_populate' return without
free dynamic memory referenced by 'stats'.

Fixes: af1ae8b6a32c ("graph: implement stats")
Cc: stable@dpdk.org
Signed-off-by: Hongbo Zheng <zhenghongbo3@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>

diff --git a/lib/graph/graph_stats.c b/lib/graph/graph_stats.c
index 125e08d..30e295d 100644 (file)
--- a/lib/graph/graph_stats.c
+++ b/lib/graph/graph_stats.c
@@ -165,6 +165,7 @@ stats_mem_populate(struct rte_graph_cluster_stats **stats_in,
        stats = realloc(stats, stats->sz + stats->cluster_node_size);
        if (stats == NULL)
                SET_ERR_JMP(ENOMEM, err, "Realloc failed");
+       *stats_in = NULL;
 
        /* Clear the new struct cluster_node area */
        cluster = RTE_PTR_ADD(stats, stats->sz),
@@ -174,7 +175,7 @@ stats_mem_populate(struct rte_graph_cluster_stats **stats_in,
        cluster->stat.hz = rte_get_timer_hz();
        node = graph_node_id_to_ptr(graph, id);
        if (node == NULL)
-               SET_ERR_JMP(ENOENT, err, "Failed to find node %s in graph %s",
+               SET_ERR_JMP(ENOENT, free, "Failed to find node %s in graph %s",
                            graph_node->node->name, graph->name);
        cluster->nodes[cluster->nb_nodes++] = node;
 
@@ -183,6 +184,8 @@ stats_mem_populate(struct rte_graph_cluster_stats **stats_in,
        *stats_in = stats;
 
        return 0;
+free:
+       free(stats);
 err:
        return -rte_errno;
 }