netdev - Re: Reproducible data corruption with sendfile+vsftp

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Message-ID:  <pan.2007.12.15.10.24.20.327500@wizards.de>
Date:	Sat, 15 Dec 2007 11:24:20 +0100
From:	"Holger Hoffstaette" <holger@...ards.de>
To:	netdev@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org
Subject:  Re: Reproducible data corruption with sendfile+vsftp - splice regression?

On Thu, 13 Dec 2007 03:19:43 +0100, Holger Hoffstaette wrote:

> I have now gone back to enable TSO since vsftp with sendfile really seems
> to be the only app that causes this. I have simply set it to
> use_sendfile=NO and no corruption occurs at all; the machine is stable and
> fast.

In the good tradition of proving myself wrong I can reliably create
corrupted files by wget-ting from apache (with sendfile enabled) as
well, so no more TSO after all. No TSO, no corruption.
The same also happens on a different machine with a r8169 (same model).
Tickless kernel makes no difference either. Shot in the dark, but hey..

Holger

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