netdev - Re: [bug, 2.6.24-rc1] sysfs: duplicate filename 'eth0' can not be created

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Message-ID: <20071029144016.06c03b7c@freepuppy.rosehill>
Date:	Mon, 29 Oct 2007 14:40:16 -0700
From:	Stephen Hemminger <shemminger@...ux-foundation.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>,
	Jeff Garzik <jgarzik@...ox.com>
Subject: Re: [bug, 2.6.24-rc1] sysfs: duplicate filename 'eth0' can not be
 created

On Mon, 29 Oct 2007 22:17:46 +0100
Ingo Molnar <mingo@...e.hu> wrote:

> 
> hm, this seems to have popped up in the last few days, never had it 
> before:
> 
>   sysfs: duplicate filename 'eth0' can not be created
>   WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
> 
>   Call Trace:
>    [<ffffffff802de00a>] sysfs_add_one+0x54/0xbd
>    [<ffffffff802dee61>] sysfs_create_link+0xc6/0x11d
>    [<ffffffff8047c491>] device_rename+0x175/0x1d6
>    [<ffffffff806180a6>] dev_change_name+0x118/0x211
>    [<ffffffff8061893c>] dev_ioctl+0x4fa/0x5f8
>    [<ffffffff8062eb11>] netlink_insert+0x13c/0x14b
>    [<ffffffff806a877f>] do_page_fault+0x3eb/0x73f
>    [<ffffffff8060b909>] sock_ioctl+0x1f2/0x200
>    [<ffffffff802a5a5d>] do_ioctl+0x21/0x6b
>    [<ffffffff802a5cea>] vfs_ioctl+0x243/0x25c
>    [<ffffffff802a5d54>] sys_ioctl+0x51/0x71
>    [<ffffffff8020c02e>] system_call+0x7e/0x83
> 
>    net eth0: device_rename: sysfs_create_symlink failed (-17)
> 
> 32-bit bzImage kernel - config attached. (The 64-bit kernel even lost 
> connectivity due to this and ifcfg-eth0 got renamed to ifcfg-eth0.bak by 
> kudzu.)
> 
> detected order of the interfaces is:
> 
>   forcedeth 0000:00:0a.0: ifname eth0, PHY OUI 0x5043 @1
>   eth1: RealTek RTL8139 at 0xffffc200001f2000
> 
> and that's the ordering in /etc/sysconfig/network-scripts as well.
> 
> 	Ingo


Already fixed post 2.6.24-rc1

commit c8d90dca3211966ba5189e0f3d4bccd558d9ae08
Author: Stephen Hemminger <shemminger@...ux-foundation.org>
Date:   Fri Oct 26 03:53:42 2007 -0700

    [NET] dev_change_name: ignore changes to same name
    
    Prevent error/backtrace from dev_rename() when changing
    name of network device to the same name. This is a common
    situation with udev and other scripts that bind addr to device.
    
    Signed-off-by: Stephen Hemminger <shemminger@...ux-foundation.org>
    Signed-off-by: David S. Miller <davem@...emloft.net>

-- 
Stephen Hemminger <shemminger@...ux-foundation.org>
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