From: Alexander Nyberg <alexn@telia.com>
To: Manfred Spraul <manfred@colorfullife.com>
Cc: Christoph Lameter <christoph@lameter.com>,
akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [SLAB] __builtin_return_address use without FRAME_POINTER causes boot failure
Date: Mon, 8 Aug 2005 23:53:53 +0200 [thread overview]
Message-ID: <20050808215353.GA26384@localhost.localdomain> (raw)
In-Reply-To: <42F7D08E.9070508@colorfullife.com>
On Mon, Aug 08, 2005 at 11:37:18PM +0200 Manfred Spraul 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.
>
My fault, I introduced a debugging patch (i think i cc'ed you on it)
which used __builtin_return_address([12]) to save traces of who the
caller of an object is.
next prev parent reply other threads:[~2005-08-08 21:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-08 20:57 [SLAB] __builtin_return_address use without FRAME_POINTER causes boot failure Christoph Lameter
2005-08-08 21:37 ` Manfred Spraul
2005-08-08 21:51 ` Andrew Morton
2005-08-08 21:53 ` Alexander Nyberg [this message]
2005-08-09 17:05 ` Manfred Spraul
2005-08-10 9:48 ` Jörn Engel
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