From: David Miller <davem@davemloft.net>
To: ilpo.jarvinen@helsinki.fi
Cc: michal.k.k.piotrowski@gmail.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: kernel BUG at include/net/tcp.h:739
Date: Thu, 03 May 2007 03:31:13 -0700 (PDT) [thread overview]
Message-ID: <20070503.033113.25133545.davem@davemloft.net> (raw)
In-Reply-To: <Pine.LNX.4.64.0705030841140.3607@kivilampi-30.cs.helsinki.fi>
From: "Ilpo_Järvinen" <ilpo.jarvinen@helsinki.fi>
Date: Thu, 3 May 2007 09:51:36 +0300 (EEST)
> [PATCH] [TCP]: Use S+L catcher only with SACK for now
>
> TCP has a transitional state when SACK is not in use during
> which this invariant is temporarily broken. Without SACK,
> tcp_clean_rtx_queue does not decrement sacked_out. Therefore
> calls to tcp_sync_left_out before sacked_out is again
> corrected by tcp_fastretrans_alert can trigger this trap as
> sacked_out still has couple of segments that are already out
> of window.
>
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
It would be nice to fix non-SACK as you say, but this is good
enough for now.
next prev parent reply other threads:[~2007-05-03 10:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-02 20:15 kernel BUG at include/net/tcp.h:739 Michal Piotrowski
2007-05-03 6:51 ` Ilpo Järvinen
2007-05-03 10:31 ` David Miller [this message]
2007-05-03 14:07 ` Michal Piotrowski
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