linux-kernel - Re: BUG-lockdep and freeze (was: Arrr! Linux 2.6.18)

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Date:	Wed, 4 Oct 2006 12:52:48 +0200
From:	Andi Kleen <ak@...e.de>
To:	"Jan Beulich" <jbeulich@...ell.com>
Cc:	"Ingo Molnar" <mingo@...e.hu>,
	"Eric Rannaud" <eric.rannaud@...il.com>,
	"Andrew Morton" <akpm@...l.org>,
	"Linus Torvalds" <torvalds@...l.org>,
	"Chandra Seetharaman" <sekharan@...ibm.com>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	nagar@...son.ibm.com
Subject: Re: BUG-lockdep and freeze (was: Arrr! Linux 2.6.18)


> >> > [  138.751306]  [<ffffffff8021ecc0>] search_extable+0x40/0x70
> >
> >After here the unwinder seems to become a bit and it shouldn't print
> >multiple entries. Jan any ideas why?
> 
> Not without raw stack contents.

I suppose those are lost in time. 

Unfortunately lockdep doesn't even print stack contents because it doesn't
save them.
 
> >Proposed patch appended. Jan, what do you think?
> 
> As said above - I thought we added zero-termination already.

For head.S but not for kernel_thread I think. At least I can't
find any existing code for kernel_thread().

-Andi
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