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Date:	Fri, 18 Jan 2013 06:28:34 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
Cc:	David Miller <davem@...emloft.net>, netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net] ipv6: Fix addrconf_dst_alloc() failure check.

On Fri, 2013-01-18 at 20:56 +0900, YOSHIFUJI Hideaki wrote:
> The function returns NULL on error and it never return error code
> embedded in pointer.
> 

Which functions returns NULL ?

addrconf_dst_alloc() returns ERR_PTR(-ENOMEM) in case of error in my net
tree.

Also, please consider adding the bug origin in your changelogs.

Thanks !

> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
> ---
>  net/ipv6/addrconf.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
> index 420e563..d0a2df2b 100644
> --- a/net/ipv6/addrconf.c
> +++ b/net/ipv6/addrconf.c
> @@ -783,8 +783,8 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen,
>  	}
>  
>  	rt = addrconf_dst_alloc(idev, addr, false);
> -	if (IS_ERR(rt)) {
> -		err = PTR_ERR(rt);
> +	if (!rt) {
> +		err = -ENOMEM;
>  		goto out;
>  	}
>  


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