Hello, First of all I've just subscribed the linux-scsi thread. I hope you get my email the right way. I have also problems with Jmicron JMS567 mobile rack. I tried on different kernels: 3.15.5 3.16.rc6 the 'Invalid field in cdb' errors disappeared but still not ok. I got the following errors when I ran a mkfs.ext4 command and then the device disappeared. Jul 26 19:54:37 debian kernel: [ 118.060026] usb 8-3: new high-speed USB device number 2 using ehci-pci Jul 26 19:54:37 debian kernel: [ 118.245208] usb 8-3: New USB device found, idVendor=152d, idProduct=0567 Jul 26 19:54:37 debian kernel: [ 118.245210] usb 8-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Jul 26 19:54:37 debian kernel: [ 118.245212] usb 8-3: Product: USB to ATA/ATAPI Bridge Jul 26 19:54:37 debian kernel: [ 118.245213] usb 8-3: Manufacturer: JMicron Jul 26 19:54:37 debian kernel: [ 118.245215] usb 8-3: SerialNumber: 74D781114413108 Jul 26 19:54:37 debian mtp-probe: checking bus 8, device 2: "/sys/devices/pci0000:00/0000:00:1d.7/usb8/8-3" Jul 26 19:54:37 debian mtp-probe: bus: 8, device: 2 was not an MTP device Jul 26 19:54:37 debian kernel: [ 118.257932] usbcore: registered new interface driver usb-storage Jul 26 19:54:37 debian kernel: [ 118.259053] scsi6 : uas Jul 26 19:54:37 debian kernel: [ 118.259178] usbcore: registered new interface driver uas Jul 26 19:54:37 debian kernel: [ 118.259720] scsi 6:0:0:0: Direct-Access JMicron Generic 0114 PQ: 0 ANSI: 6 Jul 26 19:54:37 debian kernel: [ 118.260863] sd 6:0:0:0: Attached scsi generic sg2 type 0 Jul 26 19:54:37 debian kernel: [ 118.261217] sd 6:0:0:0: [sdc] Spinning up disk... Jul 26 19:54:39 debian kernel: [ 119.264049] ..ready Jul 26 19:54:39 debian kernel: [ 120.268470] sd 6:0:0:0: [sdc] 976773168 512-byte logical blocks: (500 GB/465 GiB) Jul 26 19:54:39 debian kernel: [ 120.268472] sd 6:0:0:0: [sdc] 4096-byte physical blocks Jul 26 19:54:39 debian kernel: [ 120.269468] sd 6:0:0:0: [sdc] Write Protect is off Jul 26 19:54:39 debian kernel: [ 120.269968] sd 6:0:0:0: [sdc] Write cache: enabled, read cache: enabled, supports DPO and FUA Jul 26 19:54:39 debian kernel: [ 120.290104] sdc: sdc1 sdc2 Jul 26 19:54:39 debian kernel: [ 120.292356] sd 6:0:0:0: [sdc] Attached SCSI disk Jul 26 19:56:15 debian kernel: [ 216.611696] usb 8-3: USB disconnect, device number 2 Jul 26 19:56:15 debian kernel: [ 216.611697] sd 6:0:0:0: [sdc] uas_submit_sense_urb ffff8800ca32ac80 tag 112, inflight: s-st a-out a-cmd s-cmd Jul 26 19:56:15 debian kernel: [ 216.611700] scsi host6: sense urb submission error -19 stream 0 Jul 26 19:56:15 debian kernel: [ 216.612035] sd 6:0:0:0: [sdc] uas_cmd_cmplt ffff8800ca2f2240 tag 39, inflight: CMD Jul 26 19:56:15 debian kernel: [ 216.612120] sd 6:0:0:0: [sdc] uas_cmd_cmplt ffff8800ca2f20c0 tag 40, inflight: CMD Jul 26 19:56:15 debian kernel: [ 216.612185] sd 6:0:0:0: [sdc] uas_cmd_cmplt ffff8800ca300dc0 tag 41, inflight: CMD Jul 26 19:56:15 debian kernel: [ 216.612248] sd 6:0:0:0: [sdc] uas_cmd_cmplt ffff8800ca300c40 tag 42, inflight: CMD Jul 26 19:56:15 debian kernel: [ 216.612315] sd 6:0:0:0: [sdc] uas_cmd_cmplt ffff8800ca300ac0 tag 43, inflight: CMD Jul 26 19:56:15 debian kernel: [ 216.612377] sd 6:0:0:0: [sdc] uas_cmd_cmplt ffff8800ca300940 tag 44, inflight: CMD Jul 26 19:56:15 debian kernel: [ 216.612441] sd 6:0:0:0: [sdc] uas_cmd_cmplt ffff8800ca3007c0 tag 45, inflight: CMD Jul 26 19:56:15 debian kernel: [ 216.612504] sd 6:0:0:0: [sdc] uas_cmd_cmplt ffff8800ca300640 tag 46, inflight: CMD Jul 26 19:56:15 debian kernel: [ 216.612570] sd 6:0:0:0: [sdc] uas_cmd_cmplt ffff8800ca3004c0 tag 47, inflight: CMD Jul 26 19:56:15 debian kernel: [ 216.612633] sd 6:0:0:0: [sdc] uas_cmd_cmplt ffff8800ca300340 tag 48, inflight: CMD ... Jul 26 19:56:15 debian kernel: [ 216.625366] sd 6:0:0:0: [sdc] uas_zap_dead ffff8800ca3277c0 tag 105, inflight: CMD abort Jul 26 19:56:15 debian kernel: [ 216.625368] sd 6:0:0:0: [sdc] abort completed Jul 26 19:56:15 debian kernel: [ 216.625370] sd 6:0:0:0: [sdc] uas_zap_dead ffff8800ca327640 tag 106, inflight: CMD abort Jul 26 19:56:15 debian kernel: [ 216.625371] sd 6:0:0:0: [sdc] abort completed Jul 26 19:56:15 debian kernel: [ 216.625373] sd 6:0:0:0: [sdc] uas_zap_dead ffff8800ca3274c0 tag 107, inflight: CMD abort Jul 26 19:56:15 debian kernel: [ 216.625375] sd 6:0:0:0: [sdc] abort completed Jul 26 19:56:15 debian kernel: [ 216.625377] sd 6:0:0:0: [sdc] uas_zap_dead ffff8800ca327340 tag 108, inflight: CMD abort Jul 26 19:56:15 debian kernel: [ 216.625378] sd 6:0:0:0: [sdc] abort completed Jul 26 19:56:15 debian kernel: [ 216.625380] sd 6:0:0:0: [sdc] uas_zap_dead ffff8800ca3271c0 tag 109, inflight: CMD abort Jul 26 19:56:15 debian kernel: [ 216.625382] sd 6:0:0:0: [sdc] abort completed Jul 26 19:56:15 debian kernel: [ 216.625384] sd 6:0:0:0: [sdc] uas_zap_dead ffff8800ca327040 tag 110, inflight: CMD abort Jul 26 19:56:15 debian kernel: [ 216.625385] sd 6:0:0:0: [sdc] abort completed Jul 26 19:56:15 debian kernel: [ 216.625387] sd 6:0:0:0: [sdc] uas_zap_dead ffff8800ca32ae00 tag 111, inflight: CMD abort Jul 26 19:56:15 debian kernel: [ 216.625389] sd 6:0:0:0: [sdc] abort completed Jul 26 19:56:15 debian kernel: [ 216.625412] sd 6:0:0:0: [sdc] Unhandled error code Jul 26 19:56:15 debian kernel: [ 216.625414] sd 6:0:0:0: [sdc] Jul 26 19:56:15 debian kernel: [ 216.625416] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK Jul 26 19:56:15 debian kernel: [ 216.625417] sd 6:0:0:0: [sdc] CDB: Jul 26 19:56:15 debian kernel: [ 216.625419] Write(10): 2a 00 00 04 08 00 00 04 00 00 Jul 26 19:56:15 debian kernel: [ 216.625555] lost page write due to I/O error on sdc2 Jul 26 19:56:15 debian kernel: [ 216.625622] lost page write due to I/O error on sdc2 Jul 26 19:56:15 debian kernel: [ 216.625698] lost page write due to I/O error on sdc2 Jul 26 19:56:15 debian kernel: [ 216.625790] lost page write due to I/O error on sdc2 Jul 26 19:56:15 debian kernel: [ 216.625950] lost page write due to I/O error on sdc2 Jul 26 19:56:15 debian kernel: [ 216.626013] lost page write due to I/O error on sdc2 Jul 26 19:56:15 debian kernel: [ 216.626077] lost page write due to I/O error on sdc2 Jul 26 19:56:15 debian kernel: [ 216.626140] lost page write due to I/O error on sdc2 Jul 26 19:56:15 debian kernel: [ 216.626204] lost page write due to I/O error on sdc2 Jul 26 19:56:15 debian kernel: [ 216.626268] lost page write due to I/O error on sdc2 Jul 26 19:56:15 debian kernel: [ 216.626659] sd 6:0:0:0: [sdc] Unhandled error code Jul 26 19:56:15 debian kernel: [ 216.626662] sd 6:0:0:0: [sdc] Jul 26 19:56:15 debian kernel: [ 216.626662] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK Jul 26 19:56:15 debian kernel: [ 216.626663] sd 6:0:0:0: [sdc] CDB: Jul 26 19:56:15 debian kernel: [ 216.626664] Write(10): 2a 00 00 04 0c 00 00 04 00 00 Jul 26 19:56:15 debian kernel: [ 216.626790] sd 6:0:0:0: [sdc] Unhandled error code Jul 26 19:56:15 debian kernel: [ 216.626792] sd 6:0:0:0: [sdc] Jul 26 19:56:15 debian kernel: [ 216.626793] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK Jul 26 19:56:15 debian kernel: [ 216.626794] sd 6:0:0:0: [sdc] CDB: Jul 26 19:56:15 debian kernel: [ 216.626795] Write(10): 2a 00 00 04 10 00 00 04 00 00 Jul 26 19:56:15 debian kernel: [ 216.626924] sd 6:0:0:0: [sdc] Unhandled error code Jul 26 19:56:15 debian kernel: [ 216.626925] sd 6:0:0:0: [sdc] Jul 26 19:56:15 debian kernel: [ 216.626926] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK Jul 26 19:56:15 debian kernel: [ 216.626928] sd 6:0:0:0: [sdc] CDB: Jul 26 19:56:15 debian kernel: [ 216.626928] Write(10): 2a 00 00 04 14 00 00 04 00 00 Jul 26 19:56:15 debian kernel: [ 216.627059] sd 6:0:0:0: [sdc] Unhandled error code Jul 26 19:56:15 debian kernel: [ 216.627061] sd 6:0:0:0: [sdc] Jul 26 19:56:15 debian kernel: [ 216.627062] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK Jul 26 19:56:15 debian kernel: [ 216.627063] sd 6:0:0:0: [sdc] CDB: Jul 26 19:56:15 debian kernel: [ 216.627064] Write(10): 2a 00 00 04 18 00 00 04 00 00 Jul 26 19:56:15 debian kernel: [ 216.627195] sd 6:0:0:0: [sdc] Unhandled error code Jul 26 19:56:15 debian kernel: [ 216.627196] sd 6:0:0:0: [sdc] Jul 26 19:56:15 debian kernel: [ 216.627197] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK Jul 26 19:56:15 debian kernel: [ 216.627199] sd 6:0:0:0: [sdc] CDB: Jul 26 19:56:15 debian kernel: [ 216.627199] Write(10): 2a 00 00 04 1c 00 00 04 00 00 Jul 26 19:56:15 debian kernel: [ 216.627327] sd 6:0:0:0: [sdc] Unhandled error code Jul 26 19:56:15 debian kernel: [ 216.627328] sd 6:0:0:0: [sdc] lsusb: Bus 008 Device 002: ID 152d:0567 JMicron Technology Corp. / JMicron USA Technology Corp. Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x152d JMicron Technology Corp. / JMicron USA Technology Corp. idProduct 0x0567 bcdDevice 1.14 iManufacturer 1 iProduct 2 iSerial 3 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 85 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 4 bmAttributes 0xc0 Self Powered MaxPower 30mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 80 Bulk-Only iInterface 6 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 1 bNumEndpoints 4 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 98 iInterface 10 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x01 EP 1 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Command pipe (0x01) Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Status pipe (0x02) Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Data-in pipe (0x03) Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Data-out pipe (0x04) What can the problem be? Thanks, Laszlo -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html