linux-kernel - Re: dwarf2 stuck Re: lockdep warning in i2c_transfer() with dibx000 DVB

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Message-Id: <4533A5A5.76E4.0078.0@novell.com>
Date:	Mon, 16 Oct 2006 15:30:45 +0200
From:	"Jan Beulich" <jbeulich@...ell.com>
To:	"Jiri Kosina" <jikos@...os.cz>, "Andi Kleen" <ak@...e.de>
Cc:	<linux-kernel@...r.kernel.org>
Subject: Re: dwarf2 stuck Re: lockdep warning in i2c_transfer() with
	dibx000 DVB - input tree merge plans?

>>> Jiri Kosina <jikos@...os.cz> 16.10.06 15:08 >>>
>On Mon, 16 Oct 2006, Jan Beulich wrote:
>
>> >Yes, it was compiled using gcc 4.0.2, specifically gcc (GCC) 4.0.2 
>> >20051125 (Red Hat 4.0.2-8). I can easily reproduce this, what 
>> >additional information do you need? Or should I just try with newer 
>> >gcc?
>> Two possible paths:
>> a) Try with gcc 4.1.x.
>
>Will do probably later today.
>
>> b) Send me the offending .o (presumably the one containing 
>> dibusb_dib3000mc_tuner_attach)
>
>You can get it from http://www.jikos.cz/jikos/junk/dibusb-common.o 

Yes, unfortunately this is another instance of gcc 4.0 generating bad
unwind data when optimizing and not accumulating outgoing args.
Andi - did you already create a patch implementing Michael's suggestion?

Jan
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