linux-kernel - Re: UIO sysfs attributes broken in 2.6.25-rc1

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Message-ID: <20080213173322.GD10733@kroah.com>
Date:	Wed, 13 Feb 2008 09:33:22 -0800
From:	Greg KH <greg@...ah.com>
To:	Hans-J??rgen Koch <hjk@...utronix.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: UIO sysfs attributes broken in 2.6.25-rc1

On Wed, Feb 13, 2008 at 06:03:04PM +0100, Hans-J??rgen Koch wrote:
> In 2.6.25-rc1, there's a strange effect:
> Although the map attributes "addr" and "size" show up correctly:
> 
> -r--r--r-- 1 root root 4096 2008-02-13 17:49 addr
> -r--r--r-- 1 root root 4096 2008-02-13 17:49 size
> 
> you cannot access them, not even as root. Something like "cat addr"
> fails with a no-permission-error. It works fine in 2.6.24-rc8.
> 
> This is probably related to this patch:
> 
> http://lkml.org/lkml/2008/1/25/149
> 
> Unfortunately, I signed-off that one, too... I checked if all sysfs
> files appear, but didn't try to access them. Sorry.

Heh, well at least it wasn't just me that thought the patch was correct
:)

> Greg, any ideas?

I'll look into it this afternoon...

thanks,

greg k-h
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