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

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Message-ID: <Pine.LNX.4.64.0609301554310.3952@g5.osdl.org>
Date:	Sat, 30 Sep 2006 15:55:07 -0700 (PDT)
From:	Linus Torvalds <torvalds@...l.org>
To:	Andi Kleen <ak@...e.de>
cc:	Eric Rannaud <eric.rannaud@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>, Andrew Morton <akpm@...l.org>,
	nagar@...son.ibm.com, Chandra Seetharaman <sekharan@...ibm.com>,
	Jan Beulich <jbeulich@...ell.com>
Subject: Re: BUG-lockdep and freeze (was: Arrr! Linux 2.6.18)



On Sun, 1 Oct 2006, Andi Kleen wrote:
> 
> No, it's not. On x86-64 it can be three or more stacks nested in
> complicated ways (process stack, interrupt stack, exception stack)
> The exception stack can happen multiple times.

And you don't think that's true on x86?

Read the x86 code. Please. The one _before_ you added unwinding.

		Linus
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