linux-kernel - Re: [PATCH] dump

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Date:	Wed, 31 Oct 2007 09:28:03 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Christoph Hellwig <hch@...radead.org>,
	Daniel Walker <dwalker@...sta.com>
Subject: Re: [PATCH] dump_stack on panic

On Wed, 31 Oct 2007 11:00:56 -0400 (EDT)
Steven Rostedt <rostedt@...dmis.org> wrote:
> 
> I've had too many issues in development where I hit a panic and it
> gives me nothing to tell me why.
> 
> At the very least, we should have a dump_stack in areas that are
> usually caused by kernel bugs. For example, killing an interrupt
> handler.
> 

here's the deal.... the killing of an interrupt handler because of an
oops THEN causes a panic. If you dump stack AGAIN, you have 2 stack
traces, with the first one being the real good one, and the second one
being.. well more crappy... so you proposal just dropped the good
stacktrace off the screen in favor of a worse one...




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