diff options
| -rw-r--r-- | net/rds/rdma.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/net/rds/rdma.c b/net/rds/rdma.c index 6b09b941d3a..ff5e3c998f5 100644 --- a/net/rds/rdma.c +++ b/net/rds/rdma.c @@ -473,6 +473,17 @@ static struct rds_rdma_op *rds_rdma_prepare(struct rds_sock *rs, max_pages = max(nr, max_pages); nr_pages += nr; + + /* + * nr for one entry in limited to (UINT_MAX>>PAGE_SHIFT)+1 + * so nr_pages cannot overflow without becoming bigger than + * INT_MAX first. If nr cannot overflow then max_pages should + * be ok. + */ + if (nr_pages > INT_MAX) { + ret = -EINVAL; + goto out; + } } pages = kcalloc(max_pages, sizeof(struct page *), GFP_KERNEL); |