WARNING on 2.6.27-rc9: sysfs: duplicate filename 'usbdev5.5_ep89' can not be created

From: Theodore Ts'o
Date: Tue Oct 07 2008 - 18:12:32 EST


I'm getting a whole series of warnings running 2.6.27-rc9. I haven't
seen them before, but then again it's been a while since I've tried
charging my Blackberry via the USB port, which is apparently what
triggered this. Seems to be mostly harmless, other than dirtying up my
logs. :-)

Is this a known problem?

- Ted


[87465.889737] ------------[ cut here ]------------
[87465.889740] WARNING: at fs/sysfs/dir.c:463 sysfs_add_one+0x2f/0x3b()
[87465.889743] sysfs: duplicate filename 'usbdev5.5_ep89' can not be created
[87465.889746] Modules linked in: esp4 xfrm4_mode_tunnel dummy usb_storage libusual berry_charge btusb bluetooth uhci_hcd ehci_hcd usbcore af_packet i915 kvm_intel camellia blowfish af_key snd_hda_intel snd_hwdep video output intel_agp ide_pci_generic piix ide_core sg ata_piix ata_generic dm_mirror dm_log dm_snapshot dm_mod
[87465.889797] Pid: 10, comm: events/1 Tainted: G W 2.6.27-rc8-00145-g4b882d3 #71
[87465.889802] [<c013c839>] warn_slowpath+0x53/0x76
[87465.889810] [<c0158e2f>] ? print_lock_contention_bug+0x11/0xa8
[87465.889818] [<c0158e2f>] ? print_lock_contention_bug+0x11/0xa8
[87465.889825] [<c01e49d4>] ? sysfs_addrm_start+0x5c/0x8e
[87465.889832] [<c01e48a5>] ? sysfs_find_dirent+0x1b/0x2c
[87465.889838] [<c01e496c>] sysfs_add_one+0x2f/0x3b
[87465.889843] [<c01e4e45>] create_dir+0x48/0x6d
[87465.889848] [<c01e4e9c>] sysfs_create_dir+0x32/0x46
[87465.889854] [<c046aa96>] ? _spin_unlock+0x22/0x25
[87465.889861] [<c02b9b8f>] kobject_add_internal+0xb3/0x157
[87465.889869] [<c02b9cde>] kobject_add_varg+0x35/0x41
[87465.889874] [<c02ba046>] kobject_add+0x49/0x4f
[87465.889879] [<c032f571>] device_add+0x8a/0x4d6
[87465.889885] [<c032f9d4>] device_register+0x17/0x1a
[87465.889890] [<f8e6bea6>] usb_create_ep_files+0x1f3/0x261 [usbcore]
[87465.889917] [<f8e6b4d4>] usb_create_sysfs_intf_files+0x69/0x7e [usbcore]
[87465.889939] [<f8e67e57>] usb_set_configuration+0x40d/0x42a [usbcore]
[87465.889960] [<f8e67e9b>] driver_set_config_work+0x27/0x47 [usbcore]
[87465.889982] [<c014a7df>] run_workqueue+0xc7/0x197
[87465.889988] [<c014a79d>] ? run_workqueue+0x85/0x197
[87465.889994] [<f8e67e74>] ? driver_set_config_work+0x0/0x47 [usbcore]
[87465.890016] [<c014b26c>] worker_thread+0xbb/0xc7
[87465.890022] [<c014d9a9>] ? autoremove_wake_function+0x0/0x35
[87465.890029] [<c014b1b1>] ? worker_thread+0x0/0xc7
[87465.890035] [<c014d8be>] kthread+0x40/0x66
[87465.890040] [<c014d87e>] ? kthread+0x0/0x66
[87465.890046] [<c01157f7>] kernel_thread_helper+0x7/0x10
[87465.890051] =======================
[87465.890054] ---[ end trace fb54349569d4deee ]---
[87465.890060] kobject_add_internal failed for usbdev5.5_ep89 with -EEXIST, don't try to register things with the same name in the same directory.
[87465.890065] Pid: 10, comm: events/1 Tainted: G W 2.6.27-rc8-00145-g4b882d3 #71
[87465.890069] [<c02b9bfb>] kobject_add_internal+0x11f/0x157
[87465.890074] [<c02b9cde>] kobject_add_varg+0x35/0x41
[87465.890080] [<c02ba046>] kobject_add+0x49/0x4f
[87465.890085] [<c032f571>] device_add+0x8a/0x4d6
[87465.890090] [<c032f9d4>] device_register+0x17/0x1a
[87465.890095] [<f8e6bea6>] usb_create_ep_files+0x1f3/0x261 [usbcore]
[87465.890119] [<f8e6b4d4>] usb_create_sysfs_intf_files+0x69/0x7e [usbcore]
[87465.890140] [<f8e67e57>] usb_set_configuration+0x40d/0x42a [usbcore]
[87465.890161] [<f8e67e9b>] driver_set_config_work+0x27/0x47 [usbcore]
[87465.890181] [<c014a7df>] run_workqueue+0xc7/0x197
[87465.890187] [<c014a79d>] ? run_workqueue+0x85/0x197
[87465.890193] [<f8e67e74>] ? driver_set_config_work+0x0/0x47 [usbcore]
[87465.890216] [<c014b26c>] worker_thread+0xbb/0xc7
[87465.890221] [<c014d9a9>] ? autoremove_wake_function+0x0/0x35
[87465.890228] [<c014b1b1>] ? worker_thread+0x0/0xc7
[87465.890233] [<c014d8be>] kthread+0x40/0x66
[87465.890238] [<c014d87e>] ? kthread+0x0/0x66
[87465.890245] [<c01157f7>] kernel_thread_helper+0x7/0x10
[87465.890250] =======================
[87465.890262] ------------[ cut here ]------------
[87465.890266] WARNING: at fs/sysfs/dir.c:463 sysfs_add_one+0x2f/0x3b()
[87465.890269] sysfs: duplicate filename 'usbdev5.5_ep0a' can not be created
[87465.890271] Modules linked in: esp4 xfrm4_mode_tunnel dummy usb_storage libusual berry_charge btusb bluetooth uhci_hcd ehci_hcd usbcore af_packet i915 kvm_intel camellia blowfish af_key snd_hda_intel snd_hwdep video output intel_agp ide_pci_generic piix ide_core sg ata_piix ata_generic dm_mirror dm_log dm_snapshot dm_mod
[87465.890316] Pid: 10, comm: events/1 Tainted: G W 2.6.27-rc8-00145-g4b882d3 #71
[87465.890319] [<c013c839>] warn_slowpath+0x53/0x76
[87465.890326] [<c0158e2f>] ? print_lock_contention_bug+0x11/0xa8
[87465.890333] [<c01e49d4>] ? sysfs_addrm_start+0x5c/0x8e
[87465.890339] [<c01e48a5>] ? sysfs_find_dirent+0x1b/0x2c
[87465.890346] [<c01e496c>] sysfs_add_one+0x2f/0x3b
[87465.890351] [<c01e4e45>] create_dir+0x48/0x6d
[87465.890356] [<c01e4e9c>] sysfs_create_dir+0x32/0x46
[87465.890361] [<c046aa96>] ? _spin_unlock+0x22/0x25
[87465.890366] [<c02b9b8f>] kobject_add_internal+0xb3/0x157
[87465.890372] [<c02b9cde>] kobject_add_varg+0x35/0x41
[87465.890377] [<c02ba046>] kobject_add+0x49/0x4f
[87465.890381] [<c032f571>] device_add+0x8a/0x4d6
[87465.890386] [<c032f9d4>] device_register+0x17/0x1a
[87465.890391] [<f8e6bea6>] usb_create_ep_files+0x1f3/0x261 [usbcore]
[87465.890414] [<f8e6b4d4>] usb_create_sysfs_intf_files+0x69/0x7e [usbcore]
[87465.890435] [<f8e67e57>] usb_set_configuration+0x40d/0x42a [usbcore]
[87465.890456] [<f8e67e9b>] driver_set_config_work+0x27/0x47 [usbcore]
[87465.890476] [<c014a7df>] run_workqueue+0xc7/0x197
[87465.890481] [<c014a79d>] ? run_workqueue+0x85/0x197
[87465.890487] [<f8e67e74>] ? driver_set_config_work+0x0/0x47 [usbcore]
[87465.890509] [<c014b26c>] worker_thread+0xbb/0xc7
[87465.890514] [<c014d9a9>] ? autoremove_wake_function+0x0/0x35
[87465.890520] [<c014b1b1>] ? worker_thread+0x0/0xc7
[87465.890526] [<c014d8be>] kthread+0x40/0x66
[87465.890531] [<c014d87e>] ? kthread+0x0/0x66
[87465.890537] [<c01157f7>] kernel_thread_helper+0x7/0x10
[87465.890542] =======================
[87465.890544] ---[ end trace fb54349569d4deee ]---
[87465.890549] kobject_add_internal failed for usbdev5.5_ep0a with -EEXIST, don't try to register things with the same name in the same directory.
[87465.890554] Pid: 10, comm: events/1 Tainted: G W 2.6.27-rc8-00145-g4b882d3 #71
[87465.890557] [<c02b9bfb>] kobject_add_internal+0x11f/0x157
[87465.890563] [<c02b9cde>] kobject_add_varg+0x35/0x41
[87465.890568] [<c02ba046>] kobject_add+0x49/0x4f
[87465.890573] [<c032f571>] device_add+0x8a/0x4d6
[87465.890578] [<c032f9d4>] device_register+0x17/0x1a
[87465.890582] [<f8e6bea6>] usb_create_ep_files+0x1f3/0x261 [usbcore]
[87465.890605] [<f8e6b4d4>] usb_create_sysfs_intf_files+0x69/0x7e [usbcore]
[87465.890626] [<f8e67e57>] usb_set_configuration+0x40d/0x42a [usbcore]
[87465.890647] [<f8e67e9b>] driver_set_config_work+0x27/0x47 [usbcore]
[87465.890668] [<c014a7df>] run_workqueue+0xc7/0x197
[87465.890673] [<c014a79d>] ? run_workqueue+0x85/0x197
[87465.890679] [<f8e67e74>] ? driver_set_config_work+0x0/0x47 [usbcore]
[87465.890701] [<c014b26c>] worker_thread+0xbb/0xc7
[87465.890707] [<c014d9a9>] ? autoremove_wake_function+0x0/0x35
[87465.890714] [<c014b1b1>] ? worker_thread+0x0/0xc7
[87465.890720] [<c014d8be>] kthread+0x40/0x66
[87465.890725] [<c014d87e>] ? kthread+0x0/0x66
[87465.890731] [<c01157f7>] kernel_thread_helper+0x7/0x10
[87465.890736] =======================
[87465.934658] scsi10 : SCSI emulation for USB Mass Storage devices
[87465.961840] usb-storage: device found at 5
[87465.961844] usb-storage: waiting for device to settle before scanning
[87465.961847] ------------[ cut here ]------------
[87465.961852] WARNING: at fs/sysfs/dir.c:463 sysfs_add_one+0x2f/0x3b()
[87465.961855] sysfs: duplicate filename 'usbdev5.5_ep89' can not be created
[87465.961858] Modules linked in: esp4 xfrm4_mode_tunnel dummy usb_storage libusual berry_charge btusb bluetooth uhci_hcd ehci_hcd usbcore af_packet i915 kvm_intel camellia blowfish af_key snd_hda_intel snd_hwdep video output intel_agp ide_pci_generic piix ide_core sg ata_piix ata_generic dm_mirror dm_log dm_snapshot dm_mod
[87465.961909] Pid: 10, comm: events/1 Tainted: G W 2.6.27-rc8-00145-g4b882d3 #71
[87465.961914] [<c013c839>] warn_slowpath+0x53/0x76
[87465.961922] [<c0158e2f>] ? print_lock_contention_bug+0x11/0xa8
[87465.961930] [<c0158e2f>] ? print_lock_contention_bug+0x11/0xa8
[87465.961937] [<c01e49d4>] ? sysfs_addrm_start+0x5c/0x8e
[87465.961944] [<c01e48a5>] ? sysfs_find_dirent+0x1b/0x2c
[87465.961950] [<c01e496c>] sysfs_add_one+0x2f/0x3b
[87465.961955] [<c01e4e45>] create_dir+0x48/0x6d
[87465.961960] [<c01e4e9c>] sysfs_create_dir+0x32/0x46
[87465.961965] [<c046aa96>] ? _spin_unlock+0x22/0x25
[87465.961972] [<c02b9b8f>] kobject_add_internal+0xb3/0x157
[87465.961979] [<c02b9cde>] kobject_add_varg+0x35/0x41
[87465.961984] [<c02ba046>] kobject_add+0x49/0x4f
[87465.961991] [<c032f571>] device_add+0x8a/0x4d6
[87465.961997] [<c032f9d4>] device_register+0x17/0x1a
[87465.962002] [<f8e6bea6>] usb_create_ep_files+0x1f3/0x261 [usbcore]
[87465.962028] [<f8e6b4d4>] usb_create_sysfs_intf_files+0x69/0x7e [usbcore]
[87465.962050] [<f8e67e57>] usb_set_configuration+0x40d/0x42a [usbcore]
[87465.962071] [<f8e67e9b>] driver_set_config_work+0x27/0x47 [usbcore]
[87465.962110] [<c014a7df>] run_workqueue+0xc7/0x197
[87465.962116] [<c014a79d>] ? run_workqueue+0x85/0x197
[87465.962122] [<f8e67e74>] ? driver_set_config_work+0x0/0x47 [usbcore]
[87465.962144] [<c014b26c>] worker_thread+0xbb/0xc7
[87465.962150] [<c014d9a9>] ? autoremove_wake_function+0x0/0x35
[87465.962157] [<c014b1b1>] ? worker_thread+0x0/0xc7
[87465.962163] [<c014d8be>] kthread+0x40/0x66
[87465.962168] [<c014d87e>] ? kthread+0x0/0x66
[87465.962174] [<c01157f7>] kernel_thread_helper+0x7/0x10
[87465.962180] =======================
[87465.962184] ---[ end trace fb54349569d4deee ]---
[87465.962189] kobject_add_internal failed for usbdev5.5_ep89 with -EEXIST, don't try to register things with the same name in the same directory.
[87465.962194] Pid: 10, comm: events/1 Tainted: G W 2.6.27-rc8-00145-g4b882d3 #71
[87465.962197] [<c02b9bfb>] kobject_add_internal+0x11f/0x157
[87465.962203] [<c02b9cde>] kobject_add_varg+0x35/0x41
[87465.962209] [<c02ba046>] kobject_add+0x49/0x4f
[87465.962213] [<c032f571>] device_add+0x8a/0x4d6
[87465.962219] [<c032f9d4>] device_register+0x17/0x1a
[87465.962224] [<f8e6bea6>] usb_create_ep_files+0x1f3/0x261 [usbcore]
[87465.962246] [<f8e6b4d4>] usb_create_sysfs_intf_files+0x69/0x7e [usbcore]
[87465.962268] [<f8e67e57>] usb_set_configuration+0x40d/0x42a [usbcore]
[87465.962289] [<f8e67e9b>] driver_set_config_work+0x27/0x47 [usbcore]
[87465.962309] [<c014a7df>] run_workqueue+0xc7/0x197
[87465.962314] [<c014a79d>] ? run_workqueue+0x85/0x197
[87465.962320] [<f8e67e74>] ? driver_set_config_work+0x0/0x47 [usbcore]
[87465.962342] [<c014b26c>] worker_thread+0xbb/0xc7
[87465.962348] [<c014d9a9>] ? autoremove_wake_function+0x0/0x35
[87465.962354] [<c014b1b1>] ? worker_thread+0x0/0xc7
[87465.962360] [<c014d8be>] kthread+0x40/0x66
[87465.962365] [<c014d87e>] ? kthread+0x0/0x66
[87465.962371] [<c01157f7>] kernel_thread_helper+0x7/0x10
[87465.962376] =======================
[87465.962389] ------------[ cut here ]------------
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