Linux kernel < 4.14.111 drivers/media/dvb-frontends/helene.c kernel address dumps to user space

[Fuqian Huang <huangfq.daxian () gmail com>]

In drivers/media/dvb-frontends/helene.c:1005,
function helene_attach_s will print the address of
adapter to dmesg, the kernel address is dumpped to
user space.
struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe,
        const struct helene_config *config,
        struct i2c_adapter *i2c)
{
    ...
    priv->i2c = i2c;
    ...
    dev_info(&priv->i2c->dev,
            "Sony HELENE Sat attached on addr=%x at I2C adapter %p\n",
            priv->i2c_address, priv->i2c);
    return fe;
}

In drivers/media/dvb-frontends/helene.c:1041,
function helene_attach will print the address of
adapter to dmesg, the kernel address is dumpped to
user space.

struct dvb_frontend *helene_attach(struct dvb_frontend *fe,
        const struct helene_config *config,
        struct i2c_adapter *i2c)
{
    ...
    priv->i2c = i2c;
    ...
    dev_info(&priv->i2c->dev,
            "Sony HELENE Ter attached on addr=%x at I2C adapter %p\n",
            priv->i2c_address, priv->i2c);
    return fe;
}