linux-kernel - Re: [PATCH 1/3] thermal: core: Fix a memory leak in 'thermal_zone_device

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Date:   Tue, 08 Aug 2017 16:38:24 +0800
From:   Zhang Rui <rui.zhang@...el.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        edubezval@...il.com
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 1/3] thermal: core: Fix a memory leak in
 'thermal_zone_device_register()' error handling path

On Sun, 2017-07-16 at 08:59 +0200, Christophe JAILLET wrote:
> 'tz' is freed in some error handling paths but not in the main one.
> So free it also here to avoid a memory leak.
> 
After device registered, tz is freed in thermal_release().

thanks,
rui
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
>  drivers/thermal/thermal_core.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/thermal/thermal_core.c
> b/drivers/thermal/thermal_core.c
> index 5a51c740e372..9743f3e65eb0 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -1296,6 +1296,7 @@ thermal_zone_device_register(const char *type,
> int trips, int mask,
>  unregister:
>  	ida_simple_remove(&thermal_tz_ida, tz->id);
>  	device_unregister(&tz->device);
> +	kfree(tz);
>  	return ERR_PTR(result);
>  }
>  EXPORT_SYMBOL_GPL(thermal_zone_device_register);