From: Cedric Le Goater <legoater@free•fr>
To: "Ilpo Järvinen" <ilpo.jarvinen@helsinki•fi>
Cc: Andrew Morton <akpm@linux-foundation•org>,
LKML <linux-kernel@vger•kernel.org>,
Netdev <netdev@vger•kernel.org>,
David Miller <davem@davemloft•net>
Subject: Re: 2.6.23-rc8-mm2 - tcp_fastretrans_alert() WARNING
Date: Sat, 29 Sep 2007 16:55:13 +0200 [thread overview]
Message-ID: <46FE6751.3050205@free.fr> (raw)
In-Reply-To: <Pine.LNX.4.64.0709291532200.6776@kivilampi-30.cs.helsinki.fi>
Ilpo Järvinen wrote:
> On Fri, 28 Sep 2007, Ilpo Järvinen wrote:
>> On Fri, 28 Sep 2007, Cedric Le Goater wrote:
>>
>>> I just found that warning in my logs. It seems that it's been
>>> happening since rc7-mm1 at least.
>>>
>>> WARNING: at /home/legoater/linux/2.6.23-rc8-mm2/net/ipv4/tcp_input.c:2314 tcp_fastretrans_alert()
>>>
>>> Call Trace:
>>> <IRQ> [<ffffffff8040fdc3>] tcp_ack+0xcd6/0x1894
>>> ...snip...
>> ...Thanks for the report, I'll have look what could still break
>> fackets_out...
>
> I think this one is now clear to me, tcp_fragment/collapse adjusts
> fackets_out (incorrectly) also for reno flow when there were some dupACKs
> that made sacked_out != 0. Could you please try if patch below proves all
> them to be of non-SACK origin... In case that's true, it's rather
> harmless, I'll send a fix on Monday or so (this would anyway be needed)...
> If you find out that them occur with SACK enabled flow, that would be
> more interesting and requires more digging...
I'm trying now to reproduce this WARNING.
It seems that the n/w behaves differently during the week ends. Probably
taking a break.
C.
next prev parent reply other threads:[~2007-09-29 14:57 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20070927022220.c76a7a6e.akpm@linux-foundation.org>
2007-09-27 10:52 ` 2.6.23-rc8-mm2 - drivers/net/ibm_newemac/mal - broken Kamalesh Babulal
2007-09-28 15:42 ` 2.6.23-rc8-mm2 - tcp_fastretrans_alert() WARNING Cedric Le Goater
2007-09-28 19:10 ` Ilpo Järvinen
2007-09-29 12:44 ` Ilpo Järvinen
2007-09-29 14:55 ` Cedric Le Goater [this message]
2007-09-29 20:49 ` Ilpo Järvinen
2007-10-01 9:26 ` Cedric Le Goater
2007-10-02 10:26 ` Ilpo Järvinen
2007-10-02 20:06 ` Ilpo Järvinen
2007-10-02 21:48 ` Ilpo Järvinen
2007-09-28 16:30 ` /proc/net/ bad hard links count [Was: 2.6.23-rc8-mm2] Jiri Slaby
2007-09-28 17:03 ` Eric W. Biederman
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