linux-kernel - Re: Regression - Re: 2.6.28-rc2: runaway loop modprobe char-major-5-1

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Date:	Tue, 25 Nov 2008 12:12:52 +0100
From:	Patrick McHardy <kaber@...sh.net>
To:	Kay Sievers <kay.sievers@...y.org>
CC:	Meelis Roos <mroos@...ux.ee>,
	Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: Re: Regression - Re: 2.6.28-rc2: runaway loop modprobe char-major-5-1

Kay Sievers wrote:
> On Mon, Nov 24, 2008 at 14:31, Patrick McHardy <kaber@...sh.net> wrote:
>> Meelis Roos wrote:
>>> Rerepeating, same userspace generats fine initramfs for 2.6.27 and the
>>> initramfs contents are the same except modules tree that is for different
>>> version.
>>>
>>> It happens on 2 of my computers, both have custom config (serial compiled
>>> in, not modular). The hang happens before ttyS driver initialization.
>> char-major-5-1 is /dev/console here.
>>
>>> Seems like a kernel regression to me.
>> It does, I changed some configuration options from =m to =y and
>> it started working again. Unfortunately I'm unable to find the
>> exact option that fixed it since I don't have the previous
>> configuration anymore and random attempts to trigger the problem
>> again failed.
> 
> Maybe you just miss /dev/console in initramfs? That would trigger the
> kernel forked modprobe with that major/minor.
> 
> Some device nodes must be created or included in initramfs before any
> action is taken.

No, the image is fine. As I said, changing the config fixed the problem.
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