netdev - Re: [PATCH 2/7] sock_diag: Do not use RTA

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Date:	Wed, 27 Jun 2012 03:07:04 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	David.Laight@...LAB.COM
Cc:	tgraf@...g.ch, netdev@...r.kernel.org
Subject: Re: [PATCH 2/7] sock_diag: Do not use RTA_PUT() macros

From: "David Laight" <David.Laight@...LAB.COM>
Date: Wed, 27 Jun 2012 11:00:30 +0100

>  
>> @@ -35,9 +34,7 @@ EXPORT_SYMBOL_GPL(sock_diag_save_cookie);
>>  
>>  int sock_diag_put_meminfo(struct sock *sk, struct sk_buff 
>> *skb, int attrtype)
>>  {
>> -	__u32 *mem;
>> -
>> -	mem = RTA_DATA(__RTA_PUT(skb, attrtype, SK_MEMINFO_VARS *
> sizeof(__u32)));
>> +	u32 mem[SK_MEMINFO_VARS];
> 
> Isn't that likely to blow the kernel stack?

8 * sizeof(u32)?  Surely not.
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