Hi, I use two hard drives in an enclosure connected to my PC using UAS. The enclosure is a JMicron JMS56x (152d:0562); the drives are a Fujitsu MHZ2160BH G2 (2"5, 160GB) and a Western Digital EFRX-68N32N0 (3"5, 4TB). Using a USB2 port, I can see both drives as expected. I used to be able to use both drives using a USB3 port (and UAS) in Linux 4.11 and 4.12, but I am experiencing a bug with Linux 4.14.13. When I plug the USB cable, I can see the following output in dmesg: [Tue Feb 6 22:17:49 2018] usb 4-2: new SuperSpeed USB device number 10 using xhci_hcd [Tue Feb 6 22:17:49 2018] usb 4-2: New USB device found, idVendor=152d, idProduct=0562 [Tue Feb 6 22:17:49 2018] usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=5 [Tue Feb 6 22:17:49 2018] usb 4-2: Product: JMS56x Series [Tue Feb 6 22:17:49 2018] usb 4-2: Manufacturer: JMicron [Tue Feb 6 22:17:49 2018] usb 4-2: SerialNumber: RANDOM__8A4D7F833EEF [Tue Feb 6 22:17:49 2018] scsi host6: uas [Tue Feb 6 22:17:50 2018] scsi 6:0:0:0: Direct-Access FUJITSU MHZ2160BH G2 0104 PQ: 0 ANSI: 6 [Tue Feb 6 22:17:50 2018] scsi 6:0:0:1: Direct-Access WDC WD40 EFRX-68N32N0 0104 PQ: 0 ANSI: 6 [Tue Feb 6 22:17:50 2018] sd 6:0:0:0: Attached scsi generic sg2 type 0 [Tue Feb 6 22:17:50 2018] sd 6:0:0:1: Attached scsi generic sg3 type 0 [Tue Feb 6 22:17:57 2018] sd 6:0:0:0: [sdb] 312581808 512-byte logical blocks: (160 GB/149 GiB) [Tue Feb 6 22:17:57 2018] sd 6:0:0:1: [sdc] 7814037168 512-byte logical blocks: (4.00 TB/3.64 TiB) [Tue Feb 6 22:17:57 2018] sd 6:0:0:0: [sdb] Write Protect is off [Tue Feb 6 22:17:57 2018] sd 6:0:0:0: [sdb] Mode Sense: 67 00 10 08 [Tue Feb 6 22:17:57 2018] sd 6:0:0:1: [sdc] Write Protect is off [Tue Feb 6 22:17:57 2018] sd 6:0:0:1: [sdc] Mode Sense: 67 00 10 08 [Tue Feb 6 22:17:57 2018] sd 6:0:0:0: [sdb] Write cache: enabled, read cache: enabled, supports DPO and FUA [Tue Feb 6 22:17:57 2018] sd 6:0:0:1: [sdc] Write cache: enabled, read cache: enabled, supports DPO and FUA [Tue Feb 6 22:17:57 2018] sdb: sdb1 [Tue Feb 6 22:17:57 2018] sd 6:0:0:0: [sdb] Attached SCSI disk [Tue Feb 6 22:18:27 2018] sd 6:0:0:1: tag#1 uas_eh_abort_handler 0 uas-tag 2 inflight: IN [Tue Feb 6 22:18:27 2018] sd 6:0:0:1: tag#1 CDB: Inquiry 12 01 00 00 40 00 [Tue Feb 6 22:18:27 2018] scsi host6: uas_eh_device_reset_handler start [Tue Feb 6 22:18:28 2018] usb 4-2: reset SuperSpeed USB device number 10 using xhci_hcd [Tue Feb 6 22:18:28 2018] usb 4-2: device firmware changed [Tue Feb 6 22:18:28 2018] scsi host6: uas_post_reset: alloc streams error -19 after reset [Tue Feb 6 22:18:28 2018] usb 4-2: USB disconnect, device number 10 [Tue Feb 6 22:20:29 2018] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1 [Tue Feb 6 22:20:29 2018] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1 [Tue Feb 6 22:20:29 2018] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [Tue Feb 6 22:20:30 2018] INFO: task kworker/0:3:191 blocked for more than 120 seconds. [Tue Feb 6 22:20:30 2018] Not tainted 4.14.0-3-amd64 #1 Debian 4.14.13-1 [Tue Feb 6 22:20:30 2018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [Tue Feb 6 22:20:30 2018] kworker/0:3 D 0 191 2 0x80000000 [Tue Feb 6 22:20:30 2018] Workqueue: usb_hub_wq hub_event [usbcore] [Tue Feb 6 22:20:30 2018] Call Trace: [Tue Feb 6 22:20:30 2018] ? __schedule+0x28e/0x880 [Tue Feb 6 22:20:30 2018] schedule+0x28/0x80 [Tue Feb 6 22:20:30 2018] schedule_preempt_disabled+0xa/0x10 [Tue Feb 6 22:20:30 2018] __mutex_lock.isra.1+0x1a0/0x4e0 [Tue Feb 6 22:20:30 2018] ? _dev_info+0x64/0x80 [Tue Feb 6 22:20:30 2018] ? usb_disconnect+0x57/0x260 [usbcore] [Tue Feb 6 22:20:30 2018] usb_disconnect+0x57/0x260 [usbcore] [Tue Feb 6 22:20:30 2018] hub_event+0x52b/0x15d0 [usbcore] [Tue Feb 6 22:20:30 2018] process_one_work+0x185/0x380 [Tue Feb 6 22:20:30 2018] worker_thread+0x2e/0x390 [Tue Feb 6 22:20:30 2018] ? process_one_work+0x380/0x380 [Tue Feb 6 22:20:30 2018] kthread+0x118/0x130 [Tue Feb 6 22:20:30 2018] ? kthread_create_on_node+0x70/0x70 [Tue Feb 6 22:20:30 2018] ret_from_fork+0x1f/0x30 [Tue Feb 6 22:20:30 2018] INFO: task scsi_eh_6:9856 blocked for more than 120 seconds. [Tue Feb 6 22:20:30 2018] Not tainted 4.14.0-3-amd64 #1 Debian 4.14.13-1 [Tue Feb 6 22:20:30 2018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [Tue Feb 6 22:20:30 2018] scsi_eh_6 D 0 9856 2 0x80000000 [Tue Feb 6 22:20:30 2018] Call Trace: [Tue Feb 6 22:20:30 2018] ? __schedule+0x28e/0x880 [Tue Feb 6 22:20:30 2018] schedule+0x28/0x80 [Tue Feb 6 22:20:30 2018] async_synchronize_cookie_domain+0x96/0x140 [Tue Feb 6 22:20:30 2018] ? finish_wait+0x80/0x80 [Tue Feb 6 22:20:30 2018] sd_remove+0x48/0xc0 [sd_mod] [Tue Feb 6 22:20:30 2018] device_release_driver_internal+0x157/0x210 [Tue Feb 6 22:20:30 2018] bus_remove_device+0xe2/0x150 [Tue Feb 6 22:20:30 2018] device_del+0x1c9/0x340 [Tue Feb 6 22:20:30 2018] ? attribute_container_device_trigger+0x75/0xd0 [Tue Feb 6 22:20:30 2018] __scsi_remove_device+0xf0/0x120 [scsi_mod] [Tue Feb 6 22:20:30 2018] scsi_forget_host+0x20/0x60 [scsi_mod] [Tue Feb 6 22:20:30 2018] scsi_remove_host+0x72/0x100 [scsi_mod] [Tue Feb 6 22:20:30 2018] uas_disconnect+0x80/0xa0 [uas] [Tue Feb 6 22:20:30 2018] usb_unbind_interface+0x71/0x290 [usbcore] [Tue Feb 6 22:20:30 2018] device_release_driver_internal+0x157/0x210 [Tue Feb 6 22:20:30 2018] usb_forced_unbind_intf+0x25/0x50 [usbcore] [Tue Feb 6 22:20:30 2018] unbind_marked_interfaces.isra.13+0x47/0x60 [usbcore] [Tue Feb 6 22:20:30 2018] usb_unbind_and_rebind_marked_interfaces+0x15/0x30 [usbcore] [Tue Feb 6 22:20:30 2018] usb_reset_device+0x198/0x270 [usbcore] [Tue Feb 6 22:20:30 2018] ? scsi_eh_get_sense+0x240/0x240 [scsi_mod] [Tue Feb 6 22:20:30 2018] uas_eh_device_reset_handler+0xac/0x180 [uas] [Tue Feb 6 22:20:30 2018] ? scsi_try_target_reset+0x90/0x90 [scsi_mod] [Tue Feb 6 22:20:30 2018] scsi_eh_ready_devs+0x353/0xe20 [scsi_mod] [Tue Feb 6 22:20:30 2018] ? __pm_runtime_resume+0x54/0x70 [Tue Feb 6 22:20:30 2018] ? scsi_try_target_reset+0x90/0x90 [scsi_mod] [Tue Feb 6 22:20:30 2018] ? scsi_eh_get_sense+0x240/0x240 [scsi_mod] [Tue Feb 6 22:20:30 2018] scsi_error_handler+0x4c6/0x5b0 [scsi_mod] [Tue Feb 6 22:20:30 2018] ? scsi_eh_get_sense+0x240/0x240 [scsi_mod] [Tue Feb 6 22:20:30 2018] kthread+0x118/0x130 [Tue Feb 6 22:20:30 2018] ? kthread_create_on_node+0x70/0x70 [Tue Feb 6 22:20:30 2018] ret_from_fork+0x1f/0x30 Both disks seem to be detected at some point, but I cannot list them using "fdisk -l". I cannot reproduce this issue with a Western Digital WD10JPVT-00A1YT0 (1TB) drive and a JMicron JMS566 (357d:7788) enclosure: everything works as expected. My configs for the 4.12 and 4.14 kernels are available at https://perso.aquilenet.fr/~steap/linux/ . Regards, Cyril Roelandt. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
