struct ib_rwq_ind_table *mlx5_ib_create_rwq_ind_table(struct ib_device *device,
						      struct ib_rwq_ind_table_init_attr *init_attr,
						      struct ib_udata *udata)
{
	struct mlx5_ib_dev *dev = to_mdev(device);
	struct mlx5_ib_rwq_ind_table *rwq_ind_tbl;
	int sz = 1 << init_attr->log_ind_tbl_size;
	struct mlx5_ib_create_rwq_ind_tbl_resp resp = {};
	size_t min_resp_len;
	int inlen;
	int err;
	int i;
	u32 *in;
	void *rqtc;

	if (udata->inlen > 0 &&
	    !ib_is_udata_cleared(udata, 0,
				 udata->inlen))
		return ERR_PTR(-EOPNOTSUPP);

	if (init_attr->log_ind_tbl_size >
	    MLX5_CAP_GEN(dev->mdev, log_max_rqt_size)) {
		mlx5_ib_dbg(dev, "log_ind_tbl_size = %d is bigger than supported = %d\n",
			    init_attr->log_ind_tbl_size,
			    MLX5_CAP_GEN(dev->mdev, log_max_rqt_size));
		return ERR_PTR(-EINVAL);
	}

	min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
	if (udata->outlen && udata->outlen < min_resp_len)
		return ERR_PTR(-EINVAL);

	rwq_ind_tbl = kzalloc(sizeof(*rwq_ind_tbl), GFP_KERNEL);
	if (!rwq_ind_tbl)
		return ERR_PTR(-ENOMEM);

	inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
	in = kvzalloc(inlen, GFP_KERNEL);
	if (!in) {
		err = -ENOMEM;
		goto err;
	}

	rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);

	MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
	MLX5_SET(rqtc, rqtc, rqt_max_size, sz);

	for (i = 0; i < sz; i++)
		MLX5_SET(rqtc, rqtc, rq_num[i], init_attr->ind_tbl[i]->wq_num);

	err = mlx5_core_create_rqt(dev->mdev, in, inlen, &rwq_ind_tbl->rqtn);
	kvfree(in);

	if (err)
		goto err;

	rwq_ind_tbl->ib_rwq_ind_tbl.ind_tbl_num = rwq_ind_tbl->rqtn;
	if (udata->outlen) {
		resp.response_length = offsetof(typeof(resp), response_length) +
					sizeof(resp.response_length);
		err = ib_copy_to_udata(udata, &resp, resp.response_length);
		if (err)
			goto err_copy;
	}

	return &rwq_ind_tbl->ib_rwq_ind_tbl;

err_copy:
	mlx5_core_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn);
err:
	kfree(rwq_ind_tbl);
	return ERR_PTR(err);
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.