linux-kernel - Re: [Problem] kernel hangs at boot (bisected 892d208bcf)

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Date:	Fri, 20 Jan 2012 14:21:38 +0000
From:	Catalin Marinas <catalin.marinas@....com>
To:	Josh Boyer <jwboyer@...il.com>
Cc:	Dirk Gouders <gouders@...bocholt.fh-gelsenkirchen.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [Problem] kernel hangs at boot (bisected 892d208bcf)

On Fri, Jan 20, 2012 at 02:16:49PM +0000, Josh Boyer wrote:
> On Fri, Jan 20, 2012 at 6:01 AM, Catalin Marinas
> <catalin.marinas@....com> wrote:
> > On Thu, Jan 19, 2012 at 08:52:44PM +0000, Dirk Gouders wrote:
> >> Dirk Gouders <gouders@...bocholt.fh-gelsenkirchen.de> writes:
> >> I want to note that in my config CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF is
> >> set which causes kmemleak_disable() to be called in kmemleak_init().
> >
> > Thanks for the investigation. Could you please try the patch below?
> > Thanks.
> >
> >
> > From 09e7bd41ff3fd07e4c5eea7bbb0a045921eb5944 Mon Sep 17 00:00:00 2001
> > From: Catalin Marinas <catalin.marinas@....com>
> > Date: Fri, 20 Jan 2012 10:42:40 +0000
> > Subject: [PATCH] kmemleak: Disable early logging when kmemleak is off by
> >  default
> >
> > Commit b6693005 (kmemleak: When the early log buffer is exceeded, report
> > the actual number) deferred the disabling of the early logging to
> > kmemleak_init(). However, when CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF=y, the
> > early logging was no longer disabled causing __init kmemleak functions
> > to be called even after the kernel freed the init memory. This patch
> > disables the early logging during kmemleak_init() if kmemleak is left
> > disabled.
> >
> > Reported-by: Dirk Gouders <gouders@...bocholt.fh-gelsenkirchen.de>
> > Signed-off-by: Catalin Marinas <catalin.marinas@....com>
> 
> I tested this on my machine and it works for me as well.  Thanks for the quick
> turn around.  Feel free to add a:
> 
> Tested-by: Josh Boyer <jwboyer@...il.com>

Thanks to both of you.

-- 
Catalin
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