linux-kernel - Re: -mm hang while shutdown with printk

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Message-Id: <20090817203047.6cff48fb.akpm@linux-foundation.org>
Date:	Mon, 17 Aug 2009 20:30:47 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Dave Young <hidave.darkstar@...il.com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: -mm hang while shutdown with printk_delay

On Tue, 18 Aug 2009 11:25:22 +0800 Dave Young <hidave.darkstar@...il.com> wrote:

> Hi,
> 
> Test with printk_delay=200,
> 
> /sbin/halt -p
> 
> kernel hang after following message:
> 
> Disabling non-boot CPUs
> 
> There's no such problem with 2.6.31-rc6

umm, OK.  But -mm contains six patches:

printk-boot_delay-rename-printk_delay_msec-to-loops_per_msec.patch
printk-boot_delay-rename-printk_delay_msec-to-loops_per_msec-fix.patch
printk-boot_delay-rename-printk_delay_msec-to-loops_per_msec-fix-2.patch
printk-add-printk_delay-to-make-messages-readable-for-some-scenarios.patch
printk-add-printk_delay-to-make-messages-readable-for-some-scenarios-fix.patch
printk-add-printk_delay-to-make-messages-readable-for-some-scenarios-cleanup.patch

from yourself.  Are they the cause?
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