Testing with Intrepid 8.10 alpha5.

lsusb does not generates the oops anymore but it seems to stall forever.

Here is the relevant dmesg output (during lsusb a lot of these messages are generated, it must be stalled in some kind of loop):

[  299.312189] usb 7-2: new high speed USB device using ehci_hcd and address 3
[  299.449215] usb 7-2: configuration #1 chosen from 1 choice
[  299.648638] usbcore: registered new interface driver libusual
[  299.744754] Initializing USB Mass Storage driver...
[  299.744964] scsi5 : SCSI emulation for USB Mass Storage devices
[  299.746972] usb-storage: device found at 3
[  299.746987] usb-storage: waiting for device to settle before scanning
[  299.750012] usbcore: registered new interface driver usb-storage
[  299.750027] USB Mass Storage support registered.
[  304.744392] usb-storage: device scan complete
[  305.425730] scsi 5:0:0:0: Direct-Access     Generic                   6000 PQ: 0 ANSI: 0 CCS
[  305.446109] sd 5:0:0:0: [sdb] 1987584 512-byte hardware sectors (1018 MB)
[  305.447452] sd 5:0:0:0: [sdb] Write Protect is off
[  305.447466] sd 5:0:0:0: [sdb] Mode Sense: 4b 00 00 08
[  305.447472] sd 5:0:0:0: [sdb] Assuming drive cache: write through
[  305.456087] sd 5:0:0:0: [sdb] 1987584 512-byte hardware sectors (1018 MB)
[  305.456995] sd 5:0:0:0: [sdb] Write Protect is off
[  305.457000] sd 5:0:0:0: [sdb] Mode Sense: 4b 00 00 08
[  305.457001] sd 5:0:0:0: [sdb] Assuming drive cache: write through
[  305.457055]  sdb:<3>end_request: I/O error, dev sdb, sector 0
[  305.587791] Buffer I/O error on device sdb, logical block 0
[  335.696182] usb 7-2: reset high speed USB device using ehci_hcd and address 3
[  350.808179] usb 7-2: device descriptor read/64, error -110
[  366.024193] usb 7-2: device descriptor read/64, error -110
[  366.240177] usb 7-2: reset high speed USB device using ehci_hcd and address 3
[  381.352175] usb 7-2: device descriptor read/64, error -110
[  396.568173] usb 7-2: device descriptor read/64, error -110
[  396.784192] usb 7-2: reset high speed USB device using ehci_hcd and address 3
[  407.192164] usb 7-2: device not accepting address 3, error -110
[  407.304195] usb 7-2: reset high speed USB device using ehci_hcd and address 3
[  417.712170] usb 7-2: device not accepting address 3, error -110
[  417.712828] usb 7-2: USB disconnect, address 3
[  417.713330] sd 5:0:0:0: Device offlined - not ready after error recovery
[  417.713356] sd 5:0:0:0: [sdb] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK,SUGGEST_OK
[  417.713366] end_request: I/O error, dev sdb, sector 0
[  417.713434] Buffer I/O error on device sdb, logical block 0
[  417.713566] sd 5:0:0:0: rejecting I/O to offline device
[  417.713634] Buffer I/O error on device sdb, logical block 0
[  417.713717] sd 5:0:0:0: rejecting I/O to offline device
[  417.713790] Buffer I/O error on device sdb, logical block 0
[  417.713871] sd 5:0:0:0: rejecting I/O to offline device
[  417.713939] Buffer I/O error on device sdb, logical block 0
[  417.714016] ldm_validate_partition_table(): Disk read failed.
[  417.714087] sd 5:0:0:0: rejecting I/O to offline device
[  417.714151] Buffer I/O error on device sdb, logical block 0
[  417.714232] sd 5:0:0:0: rejecting I/O to offline device
[  417.714295] Buffer I/O error on device sdb, logical block 0
[  417.714368] sd 5:0:0:0: rejecting I/O to offline device
[  417.714430] Buffer I/O error on device sdb, logical block 0
[  417.714504] sd 5:0:0:0: rejecting I/O to offline device
[  417.714566] Buffer I/O error on device sdb, logical block 0
[  417.714631] Dev sdb: unable to read RDB block 0
[  417.714644] sd 5:0:0:0: rejecting I/O to offline device
[  417.714705] Buffer I/O error on device sdb, logical block 0
[  417.714778] sd 5:0:0:0: rejecting I/O to offline device
[  417.714842] Buffer I/O error on device sdb, logical block 0
[  417.714932] sd 5:0:0:0: rejecting I/O to offline device
[  417.715003] sd 5:0:0:0: rejecting I/O to offline device
[  417.715078] sd 5:0:0:0: rejecting I/O to offline device
[  417.715151] sd 5:0:0:0: rejecting I/O to offline device
[  417.715218]  unable to read partition table
[  417.715374] sd 5:0:0:0: [sdb] Attached SCSI removable disk
[  417.715503] sd 5:0:0:0: Attached scsi generic sg2 type 0
[  417.734088] sd 5:0:0:0: [sdb] READ CAPACITY failed
[  417.734097] sd 5:0:0:0: [sdb] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK,SUGGEST_OK
[  417.734106] sd 5:0:0:0: [sdb] Sense not available.
[  417.734145] sd 5:0:0:0: [sdb] Write Protect is off
[  417.734150] sd 5:0:0:0: [sdb] Mode Sense: 00 00 00 00
[  417.734155] sd 5:0:0:0: [sdb] Assuming drive cache: write through
[  417.734363] sd 5:0:0:0: [sdb] READ CAPACITY failed
[  417.734367] sd 5:0:0:0: [sdb] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK,SUGGEST_OK
[  417.734374] sd 5:0:0:0: [sdb] Sense not available.
[  417.734413] sd 5:0:0:0: [sdb] Write Protect is off
[  417.734418] sd 5:0:0:0: [sdb] Mode Sense: 00 00 00 00
[  417.734423] sd 5:0:0:0: [sdb] Assuming drive cache: write through
[  417.734769] sd 5:0:0:0: [sdb] READ CAPACITY failed
[  417.734774] sd 5:0:0:0: [sdb] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK,SUGGEST_OK
[  417.734782] sd 5:0:0:0: [sdb] Sense not available.
[  417.734819] sd 5:0:0:0: [sdb] Write Protect is off
[  417.734824] sd 5:0:0:0: [sdb] Mode Sense: 00 00 00 00
[  417.734828] sd 5:0:0:0: [sdb] Assuming drive cache: write through
[  417.735027] sd 5:0:0:0: [sdb] READ CAPACITY failed
[  417.735032] sd 5:0:0:0: [sdb] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK,SUGGEST_OK
[  417.735039] sd 5:0:0:0: [sdb] Sense not available.
[  417.735075] sd 5:0:0:0: [sdb] Write Protect is off
[  417.735079] sd 5:0:0:0: [sdb] Mode Sense: 00 00 00 00
[  417.735084] sd 5:0:0:0: [sdb] Assuming drive cache: write through
[  417.756871] sd 5:0:0:0: [sdb] READ CAPACITY failed
[  417.756879] sd 5:0:0:0: [sdb] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK,SUGGEST_OK
[  417.756888] sd 5:0:0:0: [sdb] Sense not available.
[  417.756926] sd 5:0:0:0: [sdb] Write Protect is off
[  417.756932] sd 5:0:0:0: [sdb] Mode Sense: 00 00 00 00
[  417.756936] sd 5:0:0:0: [sdb] Assuming drive cache: write through
[  417.757148] sd 5:0:0:0: [sdb] READ CAPACITY failed
[  417.757152] sd 5:0:0:0: [sdb] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK,SUGGEST_OK
[  417.757159] sd 5:0:0:0: [sdb] Sense not available.
[  417.757198] sd 5:0:0:0: [sdb] Write Protect is off
[  417.757203] sd 5:0:0:0: [sdb] Mode Sense: 00 00 00 00
[  417.757207] sd 5:0:0:0: [sdb] Assuming drive cache: write through
[  417.893178] usb 7-2: new high speed USB device using ehci_hcd and address 4
[  433.004180] usb 7-2: device descriptor read/64, error -110
[  448.220195] usb 7-2: device descriptor read/64, error -110
[  448.436132] usb 7-2: new high speed USB device using ehci_hcd and address 5
[  463.548176] usb 7-2: device descriptor read/64, error -110
[  478.764175] usb 7-2: device descriptor read/64, error -110
[  478.980110] usb 7-2: new high speed USB device using ehci_hcd and address 6
[  489.392163] usb 7-2: device not accepting address 6, error -110
[  489.504099] usb 7-2: new high speed USB device using ehci_hcd and address 7
[  499.912157] usb 7-2: device not accepting address 7, error -110
[  499.912275] hub 7-0:1.0: unable to enumerate USB device on port 2
[  500.208171] usb 4-2: new full speed USB device using uhci_hcd and address 2
[  515.316199] usb 4-2: device descriptor read/64, error -110
[  530.532179] usb 4-2: device descriptor read/64, error -110
[  530.748181] usb 4-2: new full speed USB device using uhci_hcd and address 3
[  545.860174] usb 4-2: device descriptor read/64, error -110
[  561.076187] usb 4-2: device descriptor read/64, error -110
[  561.348191] usb 4-2: new full speed USB device using uhci_hcd and address 4
[  571.757141] usb 4-2: device not accepting address 4, error -110
[  571.869179] usb 4-2: new full speed USB device using uhci_hcd and address 5
[  582.276082] usb 4-2: device not accepting address 5, error -110
[  582.276127] hub 4-0:1.0: unable to enumerate USB device on port 2