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Date:	Tue, 10 Nov 2009 07:54:57 +0100
From:	Daniel Mack <>
To:	Dan Williams <>
	Michael Hirsch <>,
Subject: Re: Libertas related kernel crash

On Mon, Nov 09, 2009 at 10:51:33PM -0800, Dan Williams wrote:
> On Mon, 2009-11-09 at 16:53 +0100, Daniel Mack wrote:
> > On Thu, Nov 05, 2009 at 01:05:49PM +0100, Daniel Mack wrote:
> > > On an ARM (PXA300) embdedded platform with a libertas chip connected via
> > > SDIO, we happen to see the kernel Ooops below once in a while.
> > > 
> > > Any pointer on where to dig?
> > 
> > Some more input on this. Oopses similar to the one below are likely
> > triggered when switching from Ad-hoc to managed mode multiple times in a
> > row, and something seems corrupt the memory badly. I've searched for the
> > obvious (double frees, out-of-bound writes etc), but I couldn't find
> > anything yet. It is, however, related to the wireless core and/or the
> > libertas driver.
> Probably just libertas.  Any chance you can enable debugging options
> (either in libertas, or in the kernel allocator) to help narrow down the
> issue?

Sure. I already enabled DEBUG_VM, but that didn't spit out anything
before it crashes. Which other debug flags would you recommend to set?

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