netdev - Re: v3 [PATCH net-next 4/7] ipv6: Check return of dev_set

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Date:	Mon, 07 Jul 2008 13:20:28 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Wang Chen <wangchen@...fujitsu.com>
CC:	"David S. Miller" <davem@...emloft.net>,
	NETDEV <netdev@...r.kernel.org>,
	YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
Subject: Re: v3 [PATCH net-next 4/7] ipv6: Check return of dev_set_allmulti

Wang Chen wrote:
> allmulti might overflow.
> Commit: "netdevice: Fix promiscuity and allmulti overflow" in net-next makes
> dev_set_promiscuity/allmulti return error number if overflow happened.
> 
> Here, we check the positive increment for allmulti to get error return.
> 
> @@ -627,13 +633,14 @@ static int mif6_add(struct mif6ctl *vifc, int mrtsock)
>  		if (!dev)
>  			return -EADDRNOTAVAIL;
>  		dev_put(dev);
> +		err = dev_set_allmulti(dev, 1);
> +		if (err)
> +			return err;

The use of dev after putting it looks wrong, but thats already
present before your patch. So ACK for your patch, but we need
a fix on top.
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