USB-related oops in sysfs with linux v2.6.23-rc3-50-g28e8351

Today my USB keyboard stopped working in the middle of composing and
e-mail.  I unplugged it and plugged it back, with no success.  I
logged in remotely and found this lovely message:

[ 1301.567351] usb 1-4: USB disconnect, address 3
[ 1301.567356] usb 1-4.2: USB disconnect, address 5
[ 1301.567599] sysfs_remove_bin_file: bad dentry or inode or no such file: "descriptors"
[ 1301.567604] 
[ 1301.567605] Call Trace:
[ 1301.567614]  [<ffffffff802b89a6>] sysfs_remove_bin_file+0x39/0x3d
[ 1301.567619]  [<ffffffff803f1d24>] device_remove_bin_file+0x15/0x17
[ 1301.567623]  [<ffffffff8045ea0d>] usb_remove_sysfs_dev_files+0x89/0x9d
[ 1301.567627]  [<ffffffff804625cc>] generic_disconnect+0x2e/0x32
[ 1301.567630]  [<ffffffff8045b58d>] usb_unbind_device+0x15/0x19
[ 1301.567634]  [<ffffffff803f4161>] __device_release_driver+0x93/0xb3
[ 1301.567637]  [<ffffffff803f45af>] device_release_driver+0x31/0x49
[ 1301.567640]  [<ffffffff803f39f1>] bus_remove_device+0x76/0x87
[ 1301.567644]  [<ffffffff803f2014>] device_del+0x216/0x297
[ 1301.567648]  [<ffffffff80455c8f>] usb_disconnect+0xc8/0x151
[ 1301.567651]  [<ffffffff80455c56>] usb_disconnect+0x8f/0x151
[ 1301.567655]  [<ffffffff804564c8>] hub_thread+0x442/0xc47
[ 1301.567659]  [<ffffffff80553cdb>] _spin_unlock_irq+0x9/0xc
[ 1301.567664]  [<ffffffff80244ad7>] autoremove_wake_function+0x0/0x38
[ 1301.567668]  [<ffffffff80456086>] hub_thread+0x0/0xc47
[ 1301.567671]  [<ffffffff802449cb>] kthread+0x49/0x76
[ 1301.567674]  [<ffffffff8020c618>] child_rip+0xa/0x12
[ 1301.567679]  [<ffffffff80244982>] kthread+0x0/0x76
[ 1301.567682]  [<ffffffff8020c60e>] child_rip+0x0/0x12
[ 1301.567684] 

I have rebooted, and while composing this message, I thought useful to
include the output from 'lsusb'.  Funny enough, lsusb does not list any
devices.  A 'cat /proc/bus/usb/devices' yields the following:

T:  Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=12  MxCh=10
B:  Alloc= 25/900 us ( 3%), #Int=  5, #Iso=  0
D:  Ver= 1.10 Cls=09(hub  ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=0000 ProdID=0000 Rev= 2.06
S:  Manufacturer=Linux 2.6.23-rc3-1 ohci_hcd
S:  Product=OHCI Host Controller
S:  SerialNumber=0000:00:02.0
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=  0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   2 Ivl=255ms

T:  Bus=02 Lev=01 Prnt=01 Port=02 Cnt=01 Dev#=  2 Spd=12  MxCh= 4
D:  Ver= 1.10 Cls=09(hub  ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=05f3 ProdID=0081 Rev= 3.10
S:  Manufacturer=PI Engineering
S:  Product=Kinesis Keyboard Hub
C:* #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr= 50mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   1 Ivl=255ms

T:  Bus=02 Lev=02 Prnt=02 Port=01 Cnt=01 Dev#=  3 Spd=12  MxCh= 0
D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=05f3 ProdID=0007 Rev= 3.10
C:* #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr= 64mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=03(HID  ) Sub=01 Prot=01 Driver=usbhid
E:  Ad=81(I) Atr=03(Int.) MxPS=   8 Ivl=8ms
I:* If#= 1 Alt= 0 #EPs= 1 Cls=03(HID  ) Sub=00 Prot=00 Driver=usbhid
E:  Ad=82(I) Atr=03(Int.) MxPS=   4 Ivl=8ms

T:  Bus=02 Lev=02 Prnt=02 Port=02 Cnt=02 Dev#=  4 Spd=1.5 MxCh= 0
D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=05bc ProdID=0102 Rev= 2.00
S:  Manufacturer=Forward
S:  Product=USB Optical Mouse
C:* #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=03(HID  ) Sub=01 Prot=02 Driver=usbhid
E:  Ad=81(I) Atr=03(Int.) MxPS=   4 Ivl=10ms

T:  Bus=02 Lev=02 Prnt=02 Port=03 Cnt=03 Dev#=  5 Spd=1.5 MxCh= 0
D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=045e ProdID=0039 Rev= 1.21
S:  Manufacturer=Microsoft
S:  Product=Microsoft IntelliMouse® Optical
C:* #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=03(HID  ) Sub=01 Prot=02 Driver=usbhid
E:  Ad=81(I) Atr=03(Int.) MxPS=   4 Ivl=10ms

T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=480 MxCh=10
B:  Alloc=  0/800 us ( 0%), #Int=  1, #Iso=  0
D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=0000 ProdID=0000 Rev= 2.06
S:  Manufacturer=Linux 2.6.23-rc3-1 ehci_hcd
S:  Product=EHCI Host Controller
S:  SerialNumber=0000:00:02.1
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=  0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   4 Ivl=256ms

T:  Bus=01 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#=  3 Spd=480 MxCh= 4
D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=0409 ProdID=0058 Rev= 1.00
S:  Manufacturer=NEC Corporation
S:  Product=USB2.0 Hub Controller
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   1 Ivl=256ms

T:  Bus=01 Lev=02 Prnt=03 Port=01 Cnt=01 Dev#=  5 Spd=1.5 MxCh= 0
D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=0fe9 ProdID=9010 Rev= 1.00
S:  Manufacturer=DVICO
S:  Product=DVICO USB HID Remocon V1.00
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=03(HID  ) Sub=00 Prot=00 Driver=usbhid
E:  Ad=81(I) Atr=03(Int.) MxPS=   3 Ivl=32ms
E:  Ad=02(O) Atr=03(Int.) MxPS=   1 Ivl=32ms

T:  Bus=01 Lev=01 Prnt=01 Port=08 Cnt=02 Dev#=  4 Spd=480 MxCh= 0
D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=07cc ProdID=0501 Rev=91.44
S:  Manufacturer=USB2.0
S:  Product=CardReader
S:  SerialNumber=1234609 
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms

I am testing each rcX kernel, and I did not see this problem so far.
Smells like a new regression.

florin

-- 
Bruce Schneier expects the Spanish Inquisition.
      http://geekz.co.uk/schneierfacts/fact/163

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