linux-kernel - Re: 2.6.35.4: sudo rmmod ahci @ 2.6.35.4 succeeds: filesystem access errors follow

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Message-Id: <201009072247.18438.pedrogfrancisco@gmail.com>
Date:	Tue, 7 Sep 2010 22:47:18 +0100
From:	Pedro Francisco <pedrogfrancisco@...il.com>
To:	Alejandro Riveira Fernández 
	<ariveira@...il.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.35.4: sudo rmmod ahci @ 2.6.35.4 succeeds: filesystem access errors follow

On Tuesday 07 September 2010 19:21:43 Alejandro Riveira Fernández wrote:
> El Tue, 7 Sep 2010 18:34:27 +0100
> 
> Pedro Francisco <pedrogfrancisco@...il.com> escribió:
> > sudo rmmod ahci @ 2.6.35.4 succeeds: filesystem access errors follow.
> > 
> > Now what I'm surprised is not the filesystem errors but me being allowed
> > to remove the module without using the '-f' option.
> > 
> > Do note, lsmod |grep ahci reports something like [this is adapted from a
> > 2.6.32 kernel]:
> > 
> > ahci                   32200  0
> > 
> > so it isn't at all surprising I'm being allowed to remove a seemingly
> > unused module. So....
> > a) is this supposed to happen?
> 
>  Yes afaics. root can do many stupid things if (s)he wants
>  including « rm -rf --no-preserve-root / »

That makes no sense. That's what the force option "-f" is for. It's my opinion 
the usage count for ahci on `lsmod' should be 1 and not 0. Whoever still wants 
to remove it can use the `rmmod -f ahci'


> 
> > b) do you need any more info?
> > 
> > P.S.: CC'ing me will probably ensure I'll reply faster but not explicitly
> > needed since I'm subscribed.


-- 
Pedro
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