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From: Eric Dumazet <eric.dumazet@gmail.com>
To: PK <runningdoglackey@yahoo.com>
Cc: linux-kernel@vger.kernel.org, netdev <netdev@vger.kernel.org>,
	David Miller <davem@davemloft.net>
Subject: Re: Problems with /proc/net/tcp6  - possible bug - ipv6
Date: Sat, 22 Jan 2011 22:40:44 +0100	[thread overview]
Message-ID: <1295732444.2651.68.camel@edumazet-laptop> (raw)
In-Reply-To: <1295731235.2651.66.camel@edumazet-laptop>

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 




  reply	other threads:[~2011-01-22 21:40 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 [this message]
2011-01-24 22:31           ` David Miller
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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