[dpdk-dev] [PATCH] eal/linux: fix undefined allocation of 0 bytes (CERT MEM04-C; CWE-131)

[Daniel Mrzyglod]

Fix issue reported by clang scan-build

there is a chance that nr_hugepages will be 0 if conditions for loop
for (i = 0; i < (int) internal_config.num_hugepage_sizes; i++)
will be unmeet.

Fixes: b6a468ad41d5 ("memory: add --socket-mem option")

Signed-off-by: Daniel Mrzyglod <danielx.t.mrzyglod at intel.com>
---
 lib/librte_eal/linuxapp/eal/eal_memory.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index 5b9132c..e94538e 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -1114,6 +1114,8 @@ rte_eal_hugepage_init(void)
 	 * processing done on these pages, shared memory will be created
 	 * at a later stage.
 	 */
+	if (nr_hugepages == 0)
+		goto fail;
 	tmp_hp = malloc(nr_hugepages * sizeof(struct hugepage_file));
 	if (tmp_hp == NULL)
 		goto fail;
-- 
2.5.5