[   85.428514] hub 1-0:1.0: unable to enumerate USB device on port 3
[   85.672235] usb 1-3: new high-speed USB device number 4 using ehci_hcd
[   85.860267] Initializing USB Mass Storage driver...
[   85.860738] scsi6 : usb-storage 1-3:1.0
[   85.861050] usbcore: registered new interface driver usb-storage
[   85.861060] USB Mass Storage support registered.
[   85.864870] usbcore: registered new interface driver uas
[   86.861454] scsi 6:0:0:0: Direct-Access     Single   Flash Reader     1.00 PQ: 0 ANSI: 0
[   86.866624] sd 6:0:0:0: Attached scsi generic sg1 type 0
[   87.408610] usb 1-3: USB disconnect, device number 4
[   87.416567] sd 6:0:0:0: [sdb] READ CAPACITY failed
[   87.416590] sd 6:0:0:0: [sdb]  Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[   87.416614] sd 6:0:0:0: [sdb] Sense not available.
[   87.416731] sd 6:0:0:0: [sdb] Write Protect is off
[   87.416753] sd 6:0:0:0: [sdb] Mode Sense: 4d 41 4a 4f
[   87.416862] sd 6:0:0:0: [sdb] Incomplete mode parameter data
[   87.416882] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[   87.418027] sd 6:0:0:0: [sdb] Attached SCSI removable disk
[   87.660172] usb 1-3: new high-speed USB device number 5 using ehci_hcd
[   87.794686] scsi7 : usb-storage 1-3:1.0
[   88.793393] scsi 7:0:0:0: Direct-Access     Single   Flash Reader     1.00 PQ: 0 ANSI: 0
[   88.798302] sd 7:0:0:0: Attached scsi generic sg1 type 0
[   89.401246] sd 7:0:0:0: [sdb] 15742976 512-byte logical blocks: (8.06 GB/7.50 GiB)
[   89.402310] sd 7:0:0:0: [sdb] Write Protect is off
[   89.402330] sd 7:0:0:0: [sdb] Mode Sense: 03 00 00 00
[   89.403269] sd 7:0:0:0: [sdb] No Caching mode page present
[   89.403285] sd 7:0:0:0: [sdb] Assuming drive cache: write through
[   89.410130] sd 7:0:0:0: [sdb] No Caching mode page present
[   89.410149] sd 7:0:0:0: [sdb] Assuming drive cache: write through
[   89.412313]  sdb: sdb1 sdb2
[   89.416921] sd 7:0:0:0: [sdb] No Caching mode page present
[   89.416940] sd 7:0:0:0: [sdb] Assuming drive cache: write through
[   89.416956] sd 7:0:0:0: [sdb] Attached SCSI removable disk
[   92.510490] usb 1-3: USB disconnect, device number 5
[   92.520188] sd 7:0:0:0: [sdb] Unhandled error code
[   92.520205] sd 7:0:0:0: [sdb]  Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[   92.520224] sd 7:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 09 38 00 00 08 00
[   92.520265] end_request: I/O error, dev sdb, sector 2360
[   92.520282] quiet_error: 36 callbacks suppressed
[   92.520294] Buffer I/O error on device sdb1, logical block 39
[   92.520399] sd 7:0:0:0: [sdb] Unhandled error code
[   92.520407] sd 7:0:0:0: [sdb]  Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[   92.520418] sd 7:0:0:0: [sdb] CDB: Read(10): 28 00 00 02 d9 50 00 00 08 00
[   92.520444] end_request: I/O error, dev sdb, sector 186704
[   92.520453] Buffer I/O error on device sdb2, logical block 42
[   92.704507] hub 1-0:1.0: unable to enumerate USB device on port 3
[   92.948257] usb 1-3: new high-speed USB device number 7 using ehci_hcd
[   93.016455] hub 1-0:1.0: unable to enumerate USB device on port 3
[   93.284362] usb 3-1: new full-speed USB device number 2 using uhci_hcd
[   93.427298] usb 3-1: not running at top speed; connect to a high speed hub
[   93.455271] scsi8 : usb-storage 3-1:1.0
[   94.457416] scsi 8:0:0:0: Direct-Access     Single   Flash Reader     1.00 PQ: 0 ANSI: 0
[   94.462311] sd 8:0:0:0: Attached scsi generic sg1 type 0
[   95.074351] sd 8:0:0:0: [sdb] 15742976 512-byte logical blocks: (8.06 GB/7.50 GiB)
[   95.079353] sd 8:0:0:0: [sdb] Write Protect is off
[   95.079374] sd 8:0:0:0: [sdb] Mode Sense: 03 00 00 00
[   95.084357] sd 8:0:0:0: [sdb] No Caching mode page present
[   95.084377] sd 8:0:0:0: [sdb] Assuming drive cache: write through
[   95.106451] sd 8:0:0:0: [sdb] No Caching mode page present
[   95.106478] sd 8:0:0:0: [sdb] Assuming drive cache: write through
[   95.113619]  sdb: sdb1 sdb2
[   95.135281] sd 8:0:0:0: [sdb] No Caching mode page present
[   95.135306] sd 8:0:0:0: [sdb] Assuming drive cache: write through
[   95.135324] sd 8:0:0:0: [sdb] Attached SCSI removable disk
[   97.162219] JBD2: no valid journal superblock found
[   97.162235] EXT4-fs (sdb2): error loading journal