linux-kernel - Re: [PATCH] of: do not leak console options

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Message-ID: <CAL_JsqJxPKjJPO_ykzac_L7rj2mR69OpmbLtdZiATg1iGQxwvg@mail.gmail.com>
Date:   Thu, 12 Oct 2017 12:24:53 -0500
From:   Rob Herring <robh+dt@...nel.org>
To:     Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Cc:     Petr Mladek <pmladek@...e.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Subject: Re: [PATCH] of: do not leak console options

On Tue, Sep 26, 2017 at 1:25 AM, Sergey Senozhatsky
<sergey.senozhatsky.work@...il.com> wrote:
> Do not strdup() console options. It seems that the only reason for
> it to be strdup()-ed was a compilation warning: printk, UART and
> console drivers, for some reason, expect char pointer instead of
> const char pointer. So we can just pass `of_stdout_options', but
> need to cast it to char pointer. A better fix would be to change
> printk, console drivers and UART to accept const char `options';
> but that will take time - there are lots of drivers to update.
>
> The patch also fixes a possible memory leak: add_preferred_console()
> can fail, but we don't kfree() options.
>
> Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
> ---
>  drivers/of/base.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)

Applied.

Rob