From: Gustavo A. R. Silva Date: Tue, 4 Jun 2019 15:42:22 +0000 (-0500) Subject: RDMA/ucma: Use struct_size() helper X-Git-Tag: v5.15~5930^2~142 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9bcb8940f4c0c58d2bec66e72e019ed58e602b95;p=platform%2Fkernel%2Flinux-starfive.git RDMA/ucma: Use struct_size() helper Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes. This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva Signed-off-by: Jason Gunthorpe --- diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c index 140a338..cbe4600 100644 --- a/drivers/infiniband/core/ucma.c +++ b/drivers/infiniband/core/ucma.c @@ -951,8 +951,7 @@ static ssize_t ucma_query_path(struct ucma_context *ctx, } } - if (copy_to_user(response, resp, - sizeof(*resp) + (i * sizeof(struct ib_path_rec_data)))) + if (copy_to_user(response, resp, struct_size(resp, path_data, i))) ret = -EFAULT; kfree(resp);