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SubjectRe: [bug, 2.6.24-rc1] sysfs: duplicate filename 'eth0' can not be created
Jeff Garzik wrote:
> Ingo Molnar 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.
>
>
> Does your setup do anything like try to rename the interfaces?
>
> I cannot think of anything that changed recently in this area in net,
> off the top of my head.

Ingo -

You are not alone. I see very similar stuff when I boot a system with a large
number of interfaces. At first it was almost every interface generating the
messages or ones like them, but now with a patch applied (might have come via Jeff?)

hpcpc103:~/linux-2.6.24-rc1# more dev_change_name.patch
--- a/net/core/dev.c 2007-10-24 06:01:31.000000000 -0700
+++ b/net/core/dev.c 2007-10-24 06:41:18.000000000 -0700
@@ -885,6 +885,9 @@ int dev_change_name(struct net_device *d
if (!dev_valid_name(newname))
return -EINVAL;

+ if (strncmp(newname, dev->name, IFNAMSIZ) == 0)
+ return 0;
+
memcpy(oldname, dev->name, IFNAMSIZ);

if (strchr(newname, '%')) {
I see far fewer of them:

GSI 60 (level, low) -> CPU 6 (0x0c00) vector 70
sysfs: duplicate filename 'eth6_rename' can not be created
WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
Call Trace:
[<a0000001000137c0>] show_stack+0x40/0xa0
sp=e000000159abfb90 bsp=e000000159ab8f48
[<a000000100013850>] dump_stack+0x30/0x60
sp=e000000159abfd60 bsp=e000000159ab8f30
[<a000000100206d10>] sysfs_add_one+0xb0/0x240
sp=e000000159abfd60 bsp=e000000159ab8f00
[<a0000001002092c0>] sysfs_create_link+0x200/0x300
sp=e000000159abfd60 bsp=e000000159ab8ed0
[<a000000100396bb0>] device_rename+0x2d0/0x380
sp=e000000159abfd80 bsp=e000000159ab8e78
[<a00000010040b690>] dev_change_name+0x2b0/0x4a0
sp=e000000159abfd80 bsp=e000000159ab8e30
[<a00000010040bd80>] dev_ifsioc+0x500/0x6c0
sp=e000000159abfd90 bsp=e000000159ab8e00
[<a00000010040cda0>] dev_ioctl+0xe60/0x1160
sp=e000000159abfda0 bsp=e000000159ab8da0
[<a0000001003ea7f0>] sock_ioctl+0x610/0x660
sp=e000000159abfe10 bsp=e000000159ab8d68
[<a000000100170650>] do_ioctl+0x90/0x180
sp=e000000159abfe10 bsp=e000000159ab8d28
[<a000000100170fa0>] vfs_ioctl+0x860/0x8c0
sp=e000000159abfe10 bsp=e000000159ab8ce0
[<a0000001001710a0>] sys_ioctl+0xa0/0x120
sp=e000000159abfe20 bsp=e000000159ab8c60
[<a00000010000af20>] ia64_ret_from_syscall+0x0/0x20
sp=e000000159abfe30 bsp=e000000159ab8c60
[<a000000000010620>] __start_ivt_text+0xffffffff00010620/0x400
sp=e000000159ac0000 bsp=e000000159ab8c60
net eth6_rename: device_rename: sysfs_create_symlink failed (-17)
sysfs: duplicate filename 'eth6' can not be created
WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()

...
net eth6: device_rename: sysfs_create_symlink failed (-17)
udev: renamed network interface eth7 to eth6
sysfs: duplicate filename 'eth7' can not be created
WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()

...

sp=e000000159ac0000 bsp=e000000159ab8c60
net eth7: device_rename: sysfs_create_symlink failed (-17)
udev: renamed network interface eth6_rename to eth7
ACPI: PCI Interrupt 0000:14:01.0[A] -> GSI 60 (level, low) -> IRQ 70

Interestingly (?) when I look at my eth7 interface via ethtool I see:

hpcpc103:~/linux-2.6.24-rc1# ethtool -i eth7
driver: Neterion
version: 2.0.26.5
firmware-version:
bus-info: 0000:0f:01.0
but if I look for it in /proc/interrupts I don't see it:

hpcpc103:~/linux-2.6.24-rc1# cat /proc/interrupts | grep eth7
hpcpc103:~/linux-2.6.24-rc1#
and if I look at all of /proc/interrupts:

hpcpc103:~# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3 CPU4 CPU5
CPU6 CPU7
28: 12 12 12 12 12 12
12 12 LSAPIC cpe_poll
29: 0 0 0 0 0 0
0 0 LSAPIC cmc_poll
31: 0 0 0 0 0 0
0 0 LSAPIC cmc_hndlr
48: 0 0 0 0 0 0
0 0 IO-SAPIC-level acpi
50: 0 0 1065 0 0 0
0 0 IO-SAPIC-level serial
52: 0 0 0 0 328 0
0 0 IO-SAPIC-level ehci_hcd:usb1
54: 0 0 0 0 0 0
32 0 IO-SAPIC-level ohci_hcd:usb2
57: 0 0 0 0 0 0
0 0 IO-SAPIC-level ohci_hcd:usb3
60: 0 0 0 0 11945 0
0 0 IO-SAPIC-level eth6
61: 0 0 0 0 0 101072
0 0 IO-SAPIC-level eth6 Neterion 10 Gigabit Ethernet-SR Low Profile
PCI-X 2.0 DDR A
70: 0 0 0 0 0 0
25580 0 IO-SAPIC-level cciss0
232: 0 0 0 0 0 0
0 0 LSAPIC mca_rdzv
238: 0 0 0 0 0 0
0 0 LSAPIC perfmon
239: 2376190 2376079 2376009 2376005 2376127 2376121
2375918 2373020 LSAPIC timer
240: 0 0 0 0 0 0
0 0 LSAPIC mca_wkup
252: 0 0 0 0 0 0
0 0 LSAPIC tlb_flush
253: 586 255 449 315 448 982
497 702 LSAPIC resched
254: 123 162 161 166 168 154
109 140 LSAPIC IPI
ERR: 0

it appears as eth6.

rick jones
...


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>
>
>
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