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Date: Tue, 02 May 2006 13:00:25 -0700
From: Martin Bligh <mbligh@google.com>
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To: Andi Kleen <ak@suse.de>
CC: Andrew Morton <akpm@osdl.org>, apw@shadowen.org,
       linux-kernel@vger.kernel.org
Subject: Re: 2.6.17-rc2-mm1
References: <4450F5AD.9030200@google.com> <20060428012022.7b73c77b.akpm@osdl.org> <44561A1E.7000103@google.com> <200605012034.26763.ak@suse.de>
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> That's really strange - i wonder why the backtracer can't find the original
> stack. Should probably add some printk diagnosis here.
> 
> Can you send the output with this patch?
> 
> Index: linux/arch/x86_64/kernel/traps.c
> ===================================================================
> --- linux.orig/arch/x86_64/kernel/traps.c
> +++ linux/arch/x86_64/kernel/traps.c
> @@ -238,6 +238,7 @@ void show_trace(unsigned long *stack)
>  			HANDLE_STACK (stack < estack_end);
>  			i += printk(" <EOE>");
>  			stack = (unsigned long *) estack_end[-2];
> +			printk("new stack %lx (%lx %lx %lx %lx %lx)\n", stack, estack_end[0], estack_end[-1], estack_end[-2], estack_end[-3], estack_end[-4]);
>  			continue;
>  		}
>  		if (irqstack_end) {

Thanks for running this Andy:

http://test.kernel.org/abat/30183/debug/console.log
-
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