linux-kernel - Re: MULTIPLE WARNING: at fs/sysfs/dir.c:455 sysfs_add

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Message-ID: <20120113003929.GB16942@kroah.com>
Date:	Thu, 12 Jan 2012 16:39:29 -0800
From:	Greg KH <greg@...ah.com>
To:	Greg White <pcguy11@...e.com>
Cc:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: MULTIPLE WARNING: at fs/sysfs/dir.c:455 sysfs_add_one‏‏

On Thu, Jan 12, 2012 at 05:51:10PM -0600, Greg White wrote:
> 
> > On Thu, Jan 12, 2012 at 02:40:18PM -0600, Greg W wrote:
> > >
> > > Hi,
> > >
> > > I just installed Linux on my HP 6200 PC using UEFI. The Ubuntu lucid kernel caused my computer to freeze during shutdown and reboots. So I downloaded 3.1.6 from kernel.org and compiled my own kernel and it works fine except for the following messages in my dmesg:
> > >
> > > [2.295957] ------------[ cut here ]------------
> > > [2.295962] WARNING: at fs/sysfs/dir.c:455 sysfs_add_one+0xc1/0xf0()
> > > [2.295964] Hardware name: HP Compaq 6200 Pro Small Form Factor
> > > [2.295966] sysfs: cannot create duplicate filename '/firmware/efi/vars/SlotPresent-ec87d643-eba4-4bb5-a1e5-3f3e36b20da9'
> >
> > This is a BIOS problem, with EFI, go complain to your manufacturer that
> > they are creating multiple slots with the same name.
> >
> > > [2.296043] kobject_add_internal failed for
> > > SlotPresent-ec87d643-eba4-4bb5-a1e5-3f3e36b20da9 with -EEXIST, don't try to register things with the same name in the same directory.
> >
> > See, the kernel told you this :)
> >
> > best of luck,
> >
> > greg k-h
> 
> Thank you for the clarification.  When I see WARNING: at
> fs/sysfs/dir.c:455 sysfs_add_one+0xc1/0xf0() I think kernel problem. 
> If I saw WARNING: BIOS is trying to register things with the same name
> in the same directory, I would have thought BIOS issue.  Maybe you
> could make the warning a little more clear the problem is in the BIOS
> and not the kernel?

Patches are always welcome :)

thanks,

greg k-h
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