linux-kernel - Re: [FMC] BUG: scheduling while atomic: swapper/1/0x10000002

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Message-ID: <20130703073658.GA27303@localhost>
Date:	Wed, 3 Jul 2013 15:36:58 +0800
From:	Fengguang Wu <fengguang.wu@...el.com>
To:	Alessandro Rubini <rubini@...dd.com>
Cc:	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org
Subject: Re: [FMC] BUG: scheduling while atomic: swapper/1/0x10000002

Hi Alessandro,

On Wed, Jul 03, 2013 at 09:32:49AM +0200, Alessandro Rubini wrote:
> Hello.
> 
> > I got the below dmesg and the first bad commit is
> > 
> > commit 4debfe409b6e550032bfef9733e9f6f7c5613617
> > Author: Alessandro Rubini <rubini@...dd.com>
> > Date:   Tue Jun 18 23:48:07 2013 +0200
> > 
> >     FMC: add a char-device mezzanine driver
> 
> thank you for your report. I already got a problem report with
> built-in FMC subsystem, but I couldn't reproduce it.  Actually, I use
> drivers/fmc daily (I'm currently finalizing an ADC driver), but I run
> the whole subsystem as module; it never happens in that case.
> 
> Thank you for bisecting, I'll take a deeper look as soon as possible
> (hopefully today).  Meanwhile, please disable FMC or build as modules.

No problem for me. I actually run the tests in KVM which does not have
real FMC hardware at all.

Thanks,
Fengguang
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