linux-kernel - Re: [PATCH v2] auxdisplay: hd44780: Fix potential memory leak in hd44780

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Message-ID: <Y4SUkGYK5Y6Uo3Bv@smile.fi.intel.com>
Date:   Mon, 28 Nov 2022 12:59:28 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Jianglei Nie <niejianglei2021@....com>
Cc:     ojeda@...nel.org, geert+renesas@...der.be,
        linux-kernel@...r.kernel.org, kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v2] auxdisplay: hd44780: Fix potential memory leak in
 hd44780_remove()

On Mon, Nov 28, 2022 at 12:45:39PM +0200, Andy Shevchenko wrote:
> On Mon, Nov 28, 2022 at 04:44:21PM +0800, Jianglei Nie wrote:

...

> Fixes: 718e05ed92ec ("auxdisplay: Introduce hd44780_common.[ch]")
> 
> What you found has nothing to do with the issue. Issue has been introduced
> later on.

Side note (mostly for Miguel): That series by Lars was indeed problematic.
And I see now that he didn't get the parameter to the charlcd_alloc(). Now
we have problem that your patch solves and dangling parameter in the struct
charlcd_priv. So, I will restore charlcd_alloc() before his series (after
this patch has been applied, because of the backport needs) for a new
kernel development cycle.

-- 
With Best Regards,
Andy Shevchenko