linux-kernel - Re: Module init call vs symbols exporting race?

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Message-Id: <1194608640.9377.104.camel@perihelion>
Date:	Fri, 09 Nov 2007 06:44:00 -0500
From:	Jon Masters <jonathan@...masters.org>
To:	Jan Glauber <jang@...ux.vnet.ibm.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Module init call vs symbols exporting race?


On Thu, 2007-11-08 at 13:10 +1100, Rusty Russell wrote:
> On Wednesday 07 November 2007 21:01:30 Jan Glauber wrote:
> > Hi Rusty,
> >
> > I've seen a symbol-resolving race on s390. The qeth module uses symbols
> > from qdio and although the loading order seems correct and the qdio
> > symbols should be available the following error appears:
> >
> > qdio: loading QDIO base support version 2
> > qeth: Unknown symbol qdio_synchronize
> 
> Looks like qdio does something which triggers qeth to load, but of course qdio 
> isn't finished initializing yet so its symbols aren't available.
> 
> It's not obvious what's triggering the load, but you could probably find it by 
> using printk's through qdio.c's init_QDIO().

Jan - did you get anything?

Jon.


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