mem: check allocation in dynamic hugepage init

The function malloc() could return NULL, the return value
need to be checked.

Fixes: 6f63858e55e6 ("mem: prevent preallocated pages from being freed")
Cc: stable@dpdk.org
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>

diff --git a/lib/eal/common/eal_common_dynmem.c b/lib/eal/common/eal_common_dynmem.c
index 7c5437ddfaafab6fec6bd219a697519f7a3907c9..c1e1889f5cd147a8f886ce1ab128ccb11709ecdf 100644 (file)
--- a/lib/eal/common/eal_common_dynmem.c
+++ b/lib/eal/common/eal_common_dynmem.c
@@ -304,6 +304,10 @@ eal_dynmem_hugepage_init(void)
                                needed = num_pages - num_pages_alloc;
 
                                pages = malloc(sizeof(*pages) * needed);
+                               if (pages == NULL) {
+                                       RTE_LOG(ERR, EAL, "Failed to malloc pages\n");
+                                       return -1;
+                               }
 
                                /* do not request exact number of pages */
                                cur_pages = eal_memalloc_alloc_seg_bulk(pages,