netdev - Re: [PATCH] net: Fix sock freeing before sock_init_data() with __sk

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Message-ID: <4A9B7956.40507@gmail.com>
Date:	Mon, 31 Aug 2009 09:18:46 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Jarek Poplawski <jarkao2@...il.com>
CC:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH] net: Fix sock freeing before sock_init_data() with	__sk_free()

Jarek Poplawski a écrit :
> On Mon, Aug 31, 2009 at 08:50:25AM +0200, Eric Dumazet wrote:
>> Jarek Poplawski a écrit :
>>> On Mon, Aug 31, 2009 at 08:26:43AM +0200, Eric Dumazet wrote:
>>>> Jarek Poplawski a écrit :
>>>>> After recent changes sk_free() frees socks conditionally and depends
>>>>> on sk_wmem_alloc beeing set e.g. in sock_init_data(). But in some
>>>>> cases sk_free() is called earlier, usually after other alloc errors.
>>>>> This patch fixes it by exporting and using __sk_free() directly.
>>> ...
>>>> Very nice catch Jarek, but dont you think it would be cleaner to make sure
>>>> we can call sk_free() right after sk_alloc() instead, and not exporting
>>>> __sk_free() ?
>>>>
>>>> ie initialize wmem_alloc in sk_alloc() instead of initializing it in 
>>>> sock_init_data() ?
>>>>
>>> Most probably it should be better. But I meant this fix for -net and
>>> didn't wan't to break too much... So, if you're sure it's OK feel free
>>> to send your version. (Or it could be changed like this in the -next.)
>> Well, patch is yours, not mine, and I am confident it is OK.
> 
> Well, it's from you, and I guess you'll sign off too, but if you
> think so...
>  
> Signed-off-by: Jarek Poplawski <jarkao2@...il.com>
> 
> Thanks,
> Jarek P.
> 

Give me a few hours to review sk_alloc() call sites, test patch and officially submit it.

Thanks
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