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From: David Miller <davem@davemloft.net>
To: eric.dumazet@gmail.com
Cc: runningdoglackey@yahoo.com, linux-kernel@vger.kernel.org,
	netdev@vger.kernel.org
Subject: Re: Problems with /proc/net/tcp6 - possible bug - ipv6
Date: Mon, 24 Jan 2011 14:31:41 -0800 (PST)	[thread overview]
Message-ID: <20110124.143141.104045281.davem@davemloft.net> (raw)
In-Reply-To: <1295732444.2651.68.camel@edumazet-laptop>

From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Sat, 22 Jan 2011 22:40:44 +0100

> Le samedi 22 janvier 2011 à 22:20 +0100, Eric Dumazet a écrit :
>> Le samedi 22 janvier 2011 à 11:42 -0800, PK a écrit :
>> > Eric Dumazet wrote:
>> > > 
>> > > I had some incidents, after hours of testing...
>> > >
>> > > After following patch, I could not reproduce it.
>> > 
>> > 
>> > Looks like that patch solved the /proc/net/tcp6 problem.  The causal commit was 
>> > the one you identified... confirmed with bisect.
>> > 
>> > These warnings show up when I run the script (or I presume any tcp6 connection 
>> > flooder) with /proc/sys/net/tcp/ipv4/tcp_tw_recycle enabled.  There's textual 
>> > corruption of the traces a lot of the time.  Here's a sample trace that doesn't 
>> > appear to be corrupt.  All the warnings I've seen are from route.c:209, and I 
>> > don't see how that would cause memory corruption.
>> 
>> Thats a different isse, already reported, under investigation.
>> 
>> David did some changes recently
>> 
>> http://comments.gmane.org/gmane.linux.network/179874
>> 
>> 
>> 
> 
> In my testings, I even have crashes in cleanup_once() if I
> enable /proc/sys/net/ipv4/tcp_tw_recycle 

I'm looking into this, thanks guys.

  reply	other threads:[~2011-01-24 22:31 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-22  6:30 PK
2011-01-22  8:59 ` Eric Dumazet
2011-01-22 15:15   ` Eric Dumazet
2011-01-22 19:42     ` PK
2011-01-22 21:20       ` Eric Dumazet
2011-01-22 21:40         ` Eric Dumazet
2011-01-24 22:31           ` David Miller [this message]
2011-01-24 22:40           ` David Miller
2011-01-25  0:02       ` David Miller
2011-01-24 22:42     ` David Miller
2011-01-31 22:51 PK

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