diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index e159c529fd2bbc845bbd893f645ac7633d91b9eb..38b8ab554924cd2d4a9ddf11ce3a79efe3d411cd 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -775,6 +775,13 @@ static int ceph_writepages_start(struct address_space *mapping,
 					    ci->i_truncate_seq,
 					    ci->i_truncate_size,
 					    &inode->i_mtime, true, 1, 0);
+
+				if (!req) {
+					rc = -ENOMEM;
+					unlock_page(page);
+					break;
+				}
+
 				max_pages = req->r_num_pages;
 
 				alloc_page_vec(fsc, req);