netdev - Re: [PATCH 2/2] isdn: correctly check failed allocation

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Message-Id: <20151015.233230.2252642607405342754.davem@davemloft.net>
Date:	Thu, 15 Oct 2015 23:32:30 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	wuninsu@...il.com
Cc:	isdn@...ux-pingi.de, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, taesoo@...ech.edu,
	yeongjin.jang@...ech.edu, insu@...ech.edu
Subject: Re: [PATCH 2/2] isdn: correctly check failed allocation

From: Insu Yun <wuninsu@...il.com>
Date: Thu, 15 Oct 2015 12:29:28 -0400

> Since skb_clone is memory allocation, it could be failed when lack of resource.
> Therefore, return value of skb_clone needs to be checked and handle error.
> 
> Signed-off-by: Insu Yun <wuninsu@...il.com>
> ---
>  drivers/isdn/mISDN/layer2.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/isdn/mISDN/layer2.c b/drivers/isdn/mISDN/layer2.c
> index 949cabb..888c610 100644
> --- a/drivers/isdn/mISDN/layer2.c
> +++ b/drivers/isdn/mISDN/layer2.c
> @@ -1509,6 +1509,12 @@ l2_pull_iqueue(struct FsmInst *fi, int event, void *arg)
>  	}
>  
>  	nskb = skb_clone(skb, GFP_ATOMIC);
> +  if (!nskb) {
> +			printk(KERN_WARNING "%s: no skb mem in %s\n",
> +			       mISDNDevName4ch(&l2->ch), __func__);
> +			return;
> +  }
> +

Again you have indented this code incorrectly.
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