netdev - Re: [RFC] wwan: add a new WWAN subsystem

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Date:   Tue, 25 Feb 2020 11:00:33 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     johannes@...solutions.net
Cc:     netdev@...r.kernel.org, linux-wireless@...r.kernel.org,
        elder@...aro.org, m.chetan.kumar@...el.com, dcbw@...hat.com,
        bjorn.andersson@...aro.org, johannes.berg@...el.com
Subject: Re: [RFC] wwan: add a new WWAN subsystem

From: Johannes Berg <johannes@...solutions.net>
Date: Tue, 25 Feb 2020 11:00:53 +0100

> +static struct wwan_device *wwan_create(struct device *dev)
> +{
> +	struct wwan_device *wwan = kzalloc(sizeof(*wwan), GFP_KERNEL);
> +	u32 id = ++wwan_id_counter;
> +	int err;
> +
> +	lockdep_assert_held(&wwan_mtx);
> +
> +	if (WARN_ON(!id))
> +		return ERR_PTR(-ENOSPC);

This potentially leaks 'wwan'.