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Date: Mon, 8 Aug 2005 14:51:43 -0700
From: Andrew Morton <akpm@osdl.org>
To: Manfred Spraul <manfred@colorfullife.com>
Cc: christoph@lameter.com, linux-kernel@vger.kernel.org
Subject: Re: [SLAB] __builtin_return_address use without FRAME_POINTER
 causes boot failure
Message-Id: <20050808145143.01b70183.akpm@osdl.org>
In-Reply-To: <42F7D08E.9070508@colorfullife.com>
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	<42F7D08E.9070508@colorfullife.com>
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Manfred Spraul <manfred@colorfullife.com> wrote:
>
> Christoph Lameter wrote:
> 
> >I kept getting boot failures in the slab allocator. The failure goes 
> >away if one is setting CONFIG_FRAME_POINTER. Seems that 
> >CONFIG_DEBUG_SLAB implies the use of __buildin_return_address() which 
> >needs the framepointer.
> >
> >  
> >
> Very odd. __builtin_return_address(1) needs frame pointers, but slab 
> only uses __builtin_return_addresse(0), which should always work.

I assume this is due to the now-dropped
slab-leak-detector-give-longer-traces.patch