linux-kernel - Re: PROBLEM: Silent data corruption when using sendfile()

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Message-ID: <20120714170953.GA26406@vault.local>
Date:	Sat, 14 Jul 2012 19:09:53 +0200
From:	Johannes Truschnigg <johannes@...schnigg.info>
To:	Willy Tarreau <w@....eu>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	Hillf Danton <dhillf@...il.com>, linux-kernel@...r.kernel.org,
	Linux-Netdev <netdev@...r.kernel.org>
Subject: Re: PROBLEM: Silent data corruption when using sendfile()

On Sat, Jul 14, 2012 at 03:15:40PM +0200, Willy Tarreau wrote:
> On Sat, Jul 14, 2012 at 01:06:07PM +0200, Eric Dumazet wrote:
> [...]
> > Hmmm, this is supposed to fix a bug introduced in 3.4, no ?
> > 
> > So 3.3 kernel should work well ?
> 
> You're right indeed. So maybe it's not the same bug. Or maybe Johannes
> was affected by two different bugs in both versions, since Thorsten's
> report seems to point the finger at the same bug.
> 
> Johannes, are you certain that you were having the exact same issue
> with 3.3 ?

I still have the Linux 3.3-series kernel image around that I _think_ I first
saw the problem occur with. I'll try to reproduce the problem with that
kernel, but I cannot promise that results will be ready before Tuesday. I'll
keep you posted!

-- 
with best regards:
- Johannes Truschnigg ( johannes@...schnigg.info )

www:   http://johannes.truschnigg.info/
phone: +43 650 2 133337
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