linux-kernel - Re: [bug] stuck localhost TCP connections, v2.6.26-rc3+

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Message-ID: <Pine.LNX.4.64.0806021442450.16829@wrl-59.cs.helsinki.fi>
Date:	Mon, 2 Jun 2008 14:53:09 +0300 (EEST)
From:	"Ilpo Järvinen" <ilpo.jarvinen@...sinki.fi>
To:	Herbert Xu <herbert@...dor.apana.org.au>
cc:	johnpol@....mipt.ru, ray-lk@...rabbit.org, mingo@...e.hu,
	LKML <linux-kernel@...r.kernel.org>,
	Netdev <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>, rjw@...k.pl,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [bug] stuck localhost TCP connections, v2.6.26-rc3+

On Mon, 2 Jun 2008, Herbert Xu wrote:

> Ilpo J??rvinen <ilpo.jarvinen@...sinki.fi> wrote:
> >
> > Before:
> > tcp    65436      0 lo:5000          lo:59980         ESTABLISHED -
> 
> This is what happens before accept(2) is called.  Ingo, please
> strace the process that owns the listening socket to make sure
> that it is actually calling accept(2).  If it ever stops calling
> accept(2) then this is expected behaviour.

Shouldn't that be already visible in the ingo's sysrq-t dump, no? There:

  http://marc.info/?l=linux-kernel&m=121182099131520&w=2

There are many sys_accepts at least (if I understand that dump at all). 
There were some ip_local_outs there as well, which made me wonder if the 
totally innocent looking commit 1ac06e0306d0192a7a4d9ea1c9e06d355ce7e7d3 
(ipsec: Use the correct ip_local_out function) has something to do with 
this (I definately don't understand that part at all).

-- 
 i.
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