Re: [PATCH] watchdog: fix memory leak in error path

[Christophe Leroy]

Pavel Machek <pavel@xxxxxx> a écrit :

> Fix memory leak in error path.
>
> Signed-off-by: Pavel Machek (CIP) <pavel@xxxxxxx>
>
> diff --git a/drivers/watchdog/watchdog_dev.c  
> b/drivers/watchdog/watchdog_dev.c
> index 6798addabd5a..785270ee337c 100644
> --- a/drivers/watchdog/watchdog_dev.c
> +++ b/drivers/watchdog/watchdog_dev.c
> @@ -994,8 +994,10 @@ static int watchdog_cdev_register(struct  
> watchdog_device *wdd)
>  	wd_data->wdd = wdd;
>  	wdd->wd_data = wd_data;
>
> -	if (IS_ERR_OR_NULL(watchdog_kworker))

Maybe it would be better to move this check before the kzalloc as the  
wd_data is not needed for doing that check.

Christophe

> +	if (IS_ERR_OR_NULL(watchdog_kworker)) {
> +		kfree(wd_data);
>  		return -ENODEV;
> +	}
>
>  	device_initialize(&wd_data->dev);
>  	wd_data->dev.devt = MKDEV(MAJOR(watchdog_devt), wdd->id);
>
> --
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