netdev - Re: Badness at net/ipv4/inet_connection

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Date:	Mon, 14 Dec 2009 06:56:31 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
CC:	lists@...dbynature.de, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: Badness at net/ipv4/inet_connection_sock.c:293

Le 12/12/2009 10:22, Eric Dumazet a écrit :
> Le 12/12/2009 10:03, David Miller a écrit :
>> From: Christian Kujau <lists@...dbynature.de>
>> Date: Fri, 11 Dec 2009 23:43:10 -0800 (PST)
>>
>>> today I upgraded from 2.6.32-rc7 to the latest -git (mainline) and after a 
>>> few hours the messages below appeared in the log. Apparently "privoxy" was 
>>> very busy handling connections, but the messages never appeared with 
>>> earlier kernels. 
>>>
>>> Full dmesg & .config is on:
>>> http://nerdbynature.de/bits/2.6.33-git/inet_accept/
>>
>> Yeah I started seeing this on one of my machines too, the
>> assertion is:
>>
>> 	WARN_ON(newsk->sk_state == TCP_SYN_RECV);
>>
>> I wonder if some of the refactorings we did to allow per-route
>> SACK/DSACK/etc. controls messed some sequence of state changes
>> on TCP sockets.  But I can't find anything obvious in those
>> commits.
> 
> Could it be about syncookies patches ?
> 
> tcp_create_openreq_child() changes ?
> 

It seems to me tcp_create_openreq_child() doesnt properly initialize
newtp->cookie_values to NULL, but this should not produce warnings like that ?

Sorry to not provides a proper patch now, I have to run...

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