I am using two Intenso Memory Box 2TB on a NUC NUC5PPYH USB-3 Port. Executing a "dd if=/dev/sda1 of=/dev/null" seems to work fine but if i am writing on one of them, the drives hang and the disk is unusable. The dmesg shows as follows: [ 3542.821686] sd 2:0:0:0: [sda] tag#25 uas_eh_abort_handler 0 uas-tag 26 inflight: CMD OUT [ 3542.821720] sd 2:0:0:0: [sda] tag#25 CDB: Write(10) 2a 00 2c 57 94 00 00 04 00 00 [ 3542.930180] sd 2:0:0:0: [sda] tag#24 uas_eh_abort_handler 0 uas-tag 25 inflight: CMD OUT [ 3542.930198] sd 2:0:0:0: [sda] tag#24 CDB: Write(10) 2a 00 2c 57 90 00 00 04 00 00 [ 3543.042188] sd 2:0:0:0: [sda] tag#1 uas_eh_abort_handler 0 uas-tag 2 inflight: CMD OUT [ 3543.042223] sd 2:0:0:0: [sda] tag#1 CDB: Write(10) 2a 00 2c 57 8c 00 00 04 00 00 [ 3543.154371] sd 2:0:0:0: [sda] tag#23 uas_eh_abort_handler 0 uas-tag 24 inflight: CMD OUT [ 3543.154405] sd 2:0:0:0: [sda] tag#23 CDB: Write(10) 2a 00 2c 57 88 00 00 04 00 00 [ 3543.266394] sd 2:0:0:0: [sda] tag#22 uas_eh_abort_handler 0 uas-tag 23 inflight: CMD OUT [ 3543.266428] sd 2:0:0:0: [sda] tag#22 CDB: Write(10) 2a 00 2c 57 84 00 00 04 00 00 [ 3543.378226] sd 2:0:0:0: [sda] tag#21 uas_eh_abort_handler 0 uas-tag 22 inflight: CMD OUT [ 3543.378260] sd 2:0:0:0: [sda] tag#21 CDB: Write(10) 2a 00 2c 57 80 00 00 04 00 00 [ 3543.490188] sd 2:0:0:0: [sda] tag#14 uas_eh_abort_handler 0 uas-tag 15 inflight: CMD OUT [ 3543.490223] sd 2:0:0:0: [sda] tag#14 CDB: Write(10) 2a 00 2c 57 7c 00 00 04 00 00 [ 3543.602187] sd 2:0:0:0: [sda] tag#13 uas_eh_abort_handler 0 uas-tag 14 inflight: CMD OUT [ 3543.602204] sd 2:0:0:0: [sda] tag#13 CDB: Write(10) 2a 00 2c 57 78 00 00 04 00 00 [ 3543.714315] sd 2:0:0:0: [sda] tag#12 uas_eh_abort_handler 0 uas-tag 13 inflight: CMD OUT [ 3543.714347] sd 2:0:0:0: [sda] tag#12 CDB: Write(10) 2a 00 2c 57 74 00 00 04 00 00 [ 3543.826343] sd 2:0:0:0: [sda] tag#11 uas_eh_abort_handler 0 uas-tag 12 inflight: CMD OUT [ 3543.826378] sd 2:0:0:0: [sda] tag#11 CDB: Write(10) 2a 00 2c 57 70 00 00 04 00 00 [ 3543.938161] sd 2:0:0:0: [sda] tag#10 uas_eh_abort_handler 0 uas-tag 11 inflight: CMD OUT [ 3543.938192] sd 2:0:0:0: [sda] tag#10 CDB: Write(10) 2a 00 2c 57 6c 00 00 04 00 00 [ 3544.050187] sd 2:0:0:0: [sda] tag#9 uas_eh_abort_handler 0 uas-tag 10 inflight: CMD OUT [ 3544.050223] sd 2:0:0:0: [sda] tag#9 CDB: Write(10) 2a 00 2c 57 68 00 00 04 00 00 [ 3544.162183] sd 2:0:0:0: [sda] tag#8 uas_eh_abort_handler 0 uas-tag 9 inflight: CMD OUT [ 3544.162218] sd 2:0:0:0: [sda] tag#8 CDB: Write(10) 2a 00 2c 57 64 00 00 04 00 00 [ 3544.274400] sd 2:0:0:0: [sda] tag#7 uas_eh_abort_handler 0 uas-tag 8 inflight: CMD OUT [ 3544.274436] sd 2:0:0:0: [sda] tag#7 CDB: Write(10) 2a 00 2c 57 60 00 00 04 00 00 [ 3544.386313] sd 2:0:0:0: [sda] tag#6 uas_eh_abort_handler 0 uas-tag 7 inflight: CMD OUT [ 3544.386347] sd 2:0:0:0: [sda] tag#6 CDB: Write(10) 2a 00 2c 57 5c 00 00 04 00 00 [ 3544.498194] sd 2:0:0:0: [sda] tag#5 uas_eh_abort_handler 0 uas-tag 6 inflight: CMD OUT [ 3544.498229] sd 2:0:0:0: [sda] tag#5 CDB: Write(10) 2a 00 2c 57 58 00 00 04 00 00 [ 3544.610187] sd 2:0:0:0: [sda] tag#19 uas_eh_abort_handler 0 uas-tag 21 inflight: CMD OUT [ 3544.610222] sd 2:0:0:0: [sda] tag#19 CDB: Write(10) 2a 00 2c 57 54 00 00 04 00 00 [ 3544.722188] sd 2:0:0:0: [sda] tag#20 uas_eh_abort_handler 0 uas-tag 20 inflight: CMD OUT [ 3544.722222] sd 2:0:0:0: [sda] tag#20 CDB: Write(10) 2a 00 2c 57 50 00 00 04 00 00 [ 3544.834379] sd 2:0:0:0: [sda] tag#16 uas_eh_abort_handler 0 uas-tag 17 inflight: CMD OUT [ 3544.834408] sd 2:0:0:0: [sda] tag#16 CDB: Write(10) 2a 00 2c 57 4c 00 00 04 00 00 [ 3544.946262] sd 2:0:0:0: [sda] tag#18 uas_eh_abort_handler 0 uas-tag 19 inflight: CMD OUT [ 3544.946298] sd 2:0:0:0: [sda] tag#18 CDB: Write(10) 2a 00 2c 57 48 00 00 04 00 00 [ 3545.058196] sd 2:0:0:0: [sda] tag#17 uas_eh_abort_handler 0 uas-tag 18 inflight: CMD OUT [ 3545.058230] sd 2:0:0:0: [sda] tag#17 CDB: Write(10) 2a 00 2c 57 24 00 00 04 00 00 [ 3545.170185] sd 2:0:0:0: [sda] tag#15 uas_eh_abort_handler 0 uas-tag 16 inflight: CMD OUT [ 3545.170219] sd 2:0:0:0: [sda] tag#15 CDB: Write(10) 2a 00 2c 57 20 00 00 04 00 00 [ 3545.282185] sd 2:0:0:0: [sda] tag#4 uas_eh_abort_handler 0 uas-tag 5 inflight: CMD OUT [ 3545.282220] sd 2:0:0:0: [sda] tag#4 CDB: Write(10) 2a 00 2c 57 1c 00 00 04 00 00 [ 3545.394402] sd 2:0:0:0: [sda] tag#3 uas_eh_abort_handler 0 uas-tag 4 inflight: CMD OUT [ 3545.394437] sd 2:0:0:0: [sda] tag#3 CDB: Write(10) 2a 00 2c 57 18 00 00 04 00 00 [ 3545.506260] sd 2:0:0:0: [sda] tag#2 uas_eh_abort_handler 0 uas-tag 3 inflight: CMD OUT [ 3545.506294] sd 2:0:0:0: [sda] tag#2 CDB: Write(10) 2a 00 2c 57 14 00 00 04 00 00 [ 3545.618191] sd 2:0:0:0: [sda] tag#0 uas_eh_abort_handler 0 uas-tag 1 inflight: CMD OUT [ 3545.618226] sd 2:0:0:0: [sda] tag#0 CDB: Write(10) 2a 00 2c 57 10 00 00 04 00 00 [ 3545.730185] sd 2:0:0:0: [sda] tag#26 uas_eh_abort_handler 0 uas-tag 28 inflight: CMD OUT [ 3545.730220] sd 2:0:0:0: [sda] tag#26 CDB: Write(10) 2a 00 2c 57 0c 00 00 04 00 00 [ 3545.842187] sd 2:0:0:0: [sda] tag#27 uas_eh_abort_handler 0 uas-tag 27 inflight: CMD OUT [ 3545.842215] sd 2:0:0:0: [sda] tag#27 CDB: Write(10) 2a 00 2c 57 08 00 00 04 00 00 [ 3545.954540] scsi host2: uas_eh_bus_reset_handler start [ 3546.070113] usb 2-4: reset SuperSpeed USB device number 2 using xhci_hcd [ 3546.094801] scsi host2: uas_eh_bus_reset_handler success [ 3556.093382] sd 2:0:0:0: [sda] tag#27 uas_eh_abort_handler 0 uas-tag 1 inflight: CMD [ 3556.093416] sd 2:0:0:0: [sda] tag#27 CDB: Test Unit Ready 00 00 00 00 00 00 [ 3556.093438] scsi host2: uas_eh_bus_reset_handler start [ 3561.093757] usb 2-4: Disable of device-initiated U1 failed. [ 3566.093337] usb 2-4: Disable of device-initiated U2 failed. [ 3571.213162] xhci_hcd 0000:00:14.0: Command completion event does not match command [ 3571.213655] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command [ 3576.429040] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command [ 3576.633006] usb 2-4: device not accepting address 2, error -62 [ 3576.691091] scsi host2: uas_post_reset: alloc streams error -19 after reset [ 3576.691677] usb 2-4: USB disconnect, device number 2 [ 3576.695095] sd 2:0:0:0: [sda] Synchronizing SCSI cache [ 3576.715889] md: md127 still in use. [ 3720.126608] INFO: task md127_raid1:222 blocked for more than 120 seconds. [ 3720.126920] Not tainted 4.4.0-36-generic #55-Ubuntu [ 3720.127148] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 3720.127467] md127_raid1 D ffff88026fc53ae8 0 222 2 0x00000000 [ 3720.127499] ffff88026fc53ae8 0000000000000100 ffff880035a6d780 ffff8802702c3200 [ 3720.127520] ffff88026fc54000 ffff88027fd16d00 7fffffffffffffff ffff88026fc20058 [ 3720.127539] ffff88026fc20000 ffff88026fc53b00 ffffffff81829ec5 0000000000000000 [ 3720.127558] Call Trace: [ 3720.127595] [] schedule+0x35/0x80 [ 3720.127615] [] schedule_timeout+0x1b5/0x270 [ 3720.127637] [] ? ktime_get+0x3c/0xb0 [ 3720.127655] [] io_schedule_timeout+0xa4/0x110 [ 3720.127676] [] get_request+0x411/0x790 [ 3720.127698] [] ? wake_atomic_t_function+0x60/0x60 [ 3720.127719] [] blk_queue_bio+0x125/0x3e0 [ 3720.127735] [] generic_make_request+0xf2/0x1d0 [ 3720.127768] [] flush_pending_writes+0x84/0xe0 [raid1] [ 3720.127788] [] raid1d+0x9b/0x1020 [raid1] [ 3720.127808] [] ? try_to_del_timer_sync+0x5e/0x90 [ 3720.127824] [] ? del_timer_sync+0x48/0x50 [ 3720.127839] [] ? schedule_timeout+0x131/0x270 [ 3720.127861] [] md_thread+0x139/0x150 [ 3720.127878] [] ? wake_atomic_t_function+0x60/0x60 [ 3720.127895] [] ? find_pers+0x70/0x70 [ 3720.127912] [] kthread+0xd8/0xf0 [ 3720.127927] [] ? kthread_create_on_node+0x1e0/0x1e0 [ 3720.127946] [] ret_from_fork+0x3f/0x70 [ 3720.127961] [] ? kthread_create_on_node+0x1e0/0x1e0 [ 3720.127992] INFO: task kworker/1:3:503 blocked for more than 120 seconds. [ 3720.128272] Not tainted 4.4.0-36-generic #55-Ubuntu [ 3720.128493] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 3720.128806] kworker/1:3 D ffff88027505fbe8 0 503 2 0x00000000 [ 3720.128843] Workqueue: usb_hub_wq hub_event [ 3720.128854] ffff88027505fbe8 ffff88027505fc08 ffff880276278000 ffff880035a69900 [ 3720.128873] ffff880275060000 ffff88027638f8fc ffff880035a69900 00000000ffffffff [ 3720.128891] ffff88027638f900 ffff88027505fc00 ffffffff81829ec5 ffff88027638f8f8 [ 3720.128909] Call Trace: [ 3720.128929] [] schedule+0x35/0x80 [ 3720.128946] [] schedule_preempt_disabled+0xe/0x10 [ 3720.128961] [] __mutex_lock_slowpath+0xb9/0x130 [ 3720.128976] [] mutex_lock+0x1f/0x30 [ 3720.128993] [] usb_disconnect+0x51/0x280 [ 3720.129011] [] hub_port_connect+0x82/0x9c0 [ 3720.129027] [] hub_event+0x6d1/0xb10 [ 3720.129044] [] ? put_prev_entity+0x35/0x7d0 [ 3720.129065] [] process_one_work+0x165/0x480 [ 3720.129081] [] worker_thread+0x4b/0x4c0 [ 3720.129096] [] ? process_one_work+0x480/0x480 [ 3720.129112] [] ? process_one_work+0x480/0x480 [ 3720.129126] [] kthread+0xd8/0xf0 [ 3720.129141] [] ? kthread_create_on_node+0x1e0/0x1e0 [ 3720.129156] [] ret_from_fork+0x3f/0x70 [ 3720.129171] [] ? kthread_create_on_node+0x1e0/0x1e0 [ 3720.129194] INFO: task jbd2/md127-8:736 blocked for more than 120 seconds. [ 3720.129479] Not tainted 4.4.0-36-generic #55-Ubuntu [ 3720.129700] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 3720.130015] jbd2/md127-8 D ffff880273f13ad8 0 736 2 0x00000000 [ 3720.130037] ffff880273f13ad8 ffff880273f13aa8 ffff880276278c80 ffff880035b69900 [ 3720.130056] ffff880273f14000 ffff88027fd16d00 7fffffffffffffff ffffffff8182a6c0 [ 3720.130074] ffff880273f13c30 ffff880273f13af0 ffffffff81829ec5 0000000000000000 [ 3720.130092] Call Trace: [ 3720.130111] [] ? bit_wait+0x60/0x60 [ 3720.130128] [] schedule+0x35/0x80 [ 3720.130143] [] schedule_timeout+0x1b5/0x270 [ 3720.130161] [] ? ktime_get+0x3c/0xb0 [ 3720.130177] [] ? ktime_get+0x3c/0xb0 [ 3720.130193] [] ? bit_wait+0x60/0x60 [ 3720.130328] [] io_schedule_timeout+0xa4/0x110 [ 3720.130346] [] bit_wait_io+0x1b/0x70 [ 3720.130362] [] __wait_on_bit+0x5d/0x90 [ 3720.130379] [] ? bit_wait+0x60/0x60 [ 3720.130396] [] out_of_line_wait_on_bit+0x82/0xb0 [ 3720.130413] [] ? autoremove_wake_function+0x40/0x40 [ 3720.130432] [] __wait_on_buffer+0x32/0x40 [ 3720.130453] [] jbd2_journal_commit_transaction+0xf48/0x1870 [ 3720.130476] [] ? try_to_del_timer_sync+0x5e/0x90 [ 3720.130497] [] kjournald2+0xca/0x250 [ 3720.130514] [] ? wake_atomic_t_function+0x60/0x60 [ 3720.130530] [] ? commit_timeout+0x10/0x10 [ 3720.130544] [] kthread+0xd8/0xf0 [ 3720.130560] [] ? kthread_create_on_node+0x1e0/0x1e0 [ 3720.130576] [] ret_from_fork+0x3f/0x70 [ 3720.130622] [] ? kthread_create_on_node+0x1e0/0x1e0 [ 3720.130708] INFO: task smbd:2554 blocked for more than 120 seconds. [ 3720.131003] Not tainted 4.4.0-36-generic #55-Ubuntu [ 3720.131240] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 3720.131562] smbd D ffff880079837738 0 2554 1040 0x00000000 [ 3720.131583] ffff880079837738 ffff8800798377e8 ffff880276278c80 ffff880270a86400 [ 3720.131602] ffff880079838000 ffff88027fd16d00 7fffffffffffffff ffffffff8182a6c0 [ 3720.131629] ffff880079837890 ffff880079837750 ffffffff81829ec5 0000000000000000 [ 3720.131649] Call Trace: [ 3720.131670] [] ? bit_wait+0x60/0x60 [ 3720.131687] [] schedule+0x35/0x80 [ 3720.131701] [] schedule_timeout+0x1b5/0x270 [ 3720.131719] [] ? ktime_get+0x3c/0xb0 [ 3720.131736] [] ? bit_wait+0x60/0x60 [ 3720.131762] [] io_schedule_timeout+0xa4/0x110 [ 3720.131813] [] bit_wait_io+0x1b/0x70 [ 3720.131860] [] __wait_on_bit+0x5d/0x90 [ 3720.131915] [] ? bit_wait+0x60/0x60 [ 3720.131940] [] out_of_line_wait_on_bit+0x82/0xb0 [ 3720.131958] [] ? autoremove_wake_function+0x40/0x40 [ 3720.131975] [] do_get_write_access+0x245/0x490 [ 3720.131990] [] ? __find_get_block+0x10a/0x110 [ 3720.132004] [] ? __getblk_gfp+0x2b/0x60 [ 3720.132022] [] jbd2_journal_get_write_access+0x51/0x70 [ 3720.132059] [] __ext4_journal_get_write_access+0x3b/0x80 [ 3720.132103] [] ext4_mb_mark_diskspace_used+0x7b/0x4a0 [ 3720.132139] [] ext4_mb_new_blocks+0x33e/0x580 [ 3720.132157] [] ? ext4_find_extent+0x1b9/0x320 [ 3720.132181] [] ext4_ext_map_blocks+0x62e/0xf80 [ 3720.132204] [] ? find_get_pages_tag+0x109/0x190 [ 3720.132253] [] ext4_map_blocks+0x1ab/0x4d0 [ 3720.132271] [] ext4_writepages+0x5e8/0xd70 [ 3720.132315] [] ? locks_remove_flock+0xd7/0xe0 [ 3720.132339] [] do_writepages+0x1e/0x30 [ 3720.132368] [] __filemap_fdatawrite_range+0xc6/0x100 [ 3720.132383] [] filemap_flush+0x1c/0x20 [ 3720.132414] [] ext4_alloc_da_blocks+0x2c/0x80 [ 3720.132429] [] ext4_release_file+0x79/0xc0 [ 3720.132476] [] __fput+0xe4/0x220 [ 3720.132503] [] ____fput+0xe/0x10 [ 3720.132531] [] task_work_run+0x81/0xa0 [ 3720.132557] [] exit_to_usermode_loop+0xc2/0xd0 [ 3720.132583] [] syscall_return_slowpath+0x4e/0x60 [ 3720.132619] [] int_ret_from_sys_call+0x25/0x8f [ 3720.132639] INFO: task kworker/u8:2:4908 blocked for more than 120 seconds. [ 3720.132933] Not tainted 4.4.0-36-generic #55-Ubuntu [ 3720.133157] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 3720.133479] kworker/u8:2 D ffff880214bdf508 0 4908 2 0x00000000 [ 3720.133517] Workqueue: writeback wb_workfn (flush-9:127) [ 3720.133532] ffff880214bdf508 0000000000000003 ffff880276279900 ffff880270a80c80 [ 3720.133551] ffff880214be0000 ffff88027fd96d00 7fffffffffffffff ffffffff8182a6c0 [ 3720.133569] ffff880214bdf660 ffff880214bdf520 ffffffff81829ec5 0000000000000000 [ 3720.133587] Call Trace: [ 3720.133608] [] ? bit_wait+0x60/0x60 [ 3720.133625] [] schedule+0x35/0x80 [ 3720.133641] [] schedule_timeout+0x1b5/0x270 [ 3720.133668] [] ? raid1_unplug+0x9f/0x140 [raid1] [ 3720.133698] [] ? blk_flush_plug_list+0xaf/0x240 [ 3720.133715] [] ? ktime_get+0x3c/0xb0 [ 3720.133732] [] ? bit_wait+0x60/0x60 [ 3720.133749] [] io_schedule_timeout+0xa4/0x110 [ 3720.133765] [] bit_wait_io+0x1b/0x70 [ 3720.133781] [] __wait_on_bit+0x5d/0x90 [ 3720.133798] [] ? bit_wait+0x60/0x60 [ 3720.133815] [] out_of_line_wait_on_bit+0x82/0xb0 [ 3720.133841] [] ? autoremove_wake_function+0x40/0x40 [ 3720.133858] [] do_get_write_access+0x245/0x490 [ 3720.133873] [] ? __find_get_block+0x10a/0x110 [ 3720.133888] [] ? __getblk_gfp+0x2b/0x60 [ 3720.133904] [] jbd2_journal_get_write_access+0x51/0x70 [ 3720.133921] [] __ext4_journal_get_write_access+0x3b/0x80 [ 3720.133938] [] ext4_mb_mark_diskspace_used+0x7b/0x4a0 [ 3720.133957] [] ? ext4_mb_use_preallocated.constprop.27+0x23c/0x260 [ 3720.133982] [] ext4_mb_new_blocks+0x33e/0x580 [ 3720.133996] [] ? ext4_find_extent+0x1b9/0x320 [ 3720.134012] [] ext4_ext_map_blocks+0x62e/0xf80 [ 3720.134030] [] ? find_get_pages_tag+0x109/0x190 [ 3720.134049] [] ext4_map_blocks+0x1ab/0x4d0 [ 3720.134066] [] ext4_writepages+0x5e8/0xd70 [ 3720.134086] [] ? sd_setup_read_write_cmnd+0x47/0xa40 [ 3720.134103] [] ? sd_init_command+0x27/0xa0 [ 3720.134128] [] do_writepages+0x1e/0x30 [ 3720.134145] [] __writeback_single_inode+0x45/0x330 [ 3720.134161] [] writeback_sb_inodes+0x262/0x600 [ 3720.134180] [] __writeback_inodes_wb+0x8c/0xc0 [ 3720.134195] [] wb_writeback+0x253/0x310 [ 3720.134279] [] ? get_nr_dirty_inodes+0x51/0x80 [ 3720.134296] [] wb_workfn+0x2ea/0x400 [ 3720.134317] [] process_one_work+0x165/0x480 [ 3720.134341] [] worker_thread+0x4b/0x4c0 [ 3720.134357] [] ? process_one_work+0x480/0x480 [ 3720.134373] [] ? process_one_work+0x480/0x480 [ 3720.134387] [] kthread+0xd8/0xf0 [ 3720.134402] [] ? kthread_create_on_node+0x1e0/0x1e0 [ 3720.134418] [] ret_from_fork+0x3f/0x70 [ 3720.134434] [] ? kthread_create_on_node+0x1e0/0x1e0 [ 3840.132567] INFO: task md127_raid1:222 blocked for more than 120 seconds. [ 3840.132881] Not tainted 4.4.0-36-generic #55-Ubuntu [ 3840.133107] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 3840.133426] md127_raid1 D ffff88026fc53ae8 0 222 2 0x00000000 [ 3840.133458] ffff88026fc53ae8 0000000000000100 ffff880035a6d780 ffff8802702c3200 [ 3840.133480] ffff88026fc54000 ffff88027fd16d00 7fffffffffffffff ffff88026fc20058 [ 3840.133498] ffff88026fc20000 ffff88026fc53b00 ffffffff81829ec5 0000000000000000 [ 3840.133518] Call Trace: [ 3840.133556] [] schedule+0x35/0x80 [ 3840.133575] [] schedule_timeout+0x1b5/0x270 [ 3840.133598] [] ? ktime_get+0x3c/0xb0 [ 3840.133616] [] io_schedule_timeout+0xa4/0x110 [ 3840.133637] [] get_request+0x411/0x790 [ 3840.133659] [] ? wake_atomic_t_function+0x60/0x60 [ 3840.133681] [] blk_queue_bio+0x125/0x3e0 [ 3840.133697] [] generic_make_request+0xf2/0x1d0 [ 3840.133730] [] flush_pending_writes+0x84/0xe0 [raid1] [ 3840.133750] [] raid1d+0x9b/0x1020 [raid1] [ 3840.133770] [] ? try_to_del_timer_sync+0x5e/0x90 [ 3840.133786] [] ? del_timer_sync+0x48/0x50 [ 3840.133801] [] ? schedule_timeout+0x131/0x270 [ 3840.133826] [] md_thread+0x139/0x150 [ 3840.133843] [] ? wake_atomic_t_function+0x60/0x60 [ 3840.133859] [] ? find_pers+0x70/0x70 [ 3840.133876] [] kthread+0xd8/0xf0 [ 3840.133891] [] ? kthread_create_on_node+0x1e0/0x1e0 [ 3840.133910] [] ret_from_fork+0x3f/0x70 [ 3840.133925] [] ? kthread_create_on_node+0x1e0/0x1e0 [ 3840.133956] INFO: task kworker/1:3:503 blocked for more than 120 seconds. [ 3840.134239] Not tainted 4.4.0-36-generic #55-Ubuntu [ 3840.134461] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 3840.134776] kworker/1:3 D ffff88027505fbe8 0 503 2 0x00000000 [ 3840.134811] Workqueue: usb_hub_wq hub_event [ 3840.134821] ffff88027505fbe8 ffff88027505fc08 ffff880276278000 ffff880035a69900 [ 3840.134840] ffff880275060000 ffff88027638f8fc ffff880035a69900 00000000ffffffff [ 3840.134859] ffff88027638f900 ffff88027505fc00 ffffffff81829ec5 ffff88027638f8f8 [ 3840.134876] Call Trace: [ 3840.134896] [] schedule+0x35/0x80 [ 3840.134913] [] schedule_preempt_disabled+0xe/0x10 [ 3840.134928] [] __mutex_lock_slowpath+0xb9/0x130 [ 3840.134944] [] mutex_lock+0x1f/0x30 [ 3840.134961] [] usb_disconnect+0x51/0x280 [ 3840.134979] [] hub_port_connect+0x82/0x9c0 [ 3840.134996] [] hub_event+0x6d1/0xb10 [ 3840.135012] [] ? put_prev_entity+0x35/0x7d0 [ 3840.135033] [] process_one_work+0x165/0x480 [ 3840.135049] [] worker_thread+0x4b/0x4c0 [ 3840.135065] [] ? process_one_work+0x480/0x480 [ 3840.135080] [] ? process_one_work+0x480/0x480 [ 3840.135094] [] kthread+0xd8/0xf0 [ 3840.135110] [] ? kthread_create_on_node+0x1e0/0x1e0 [ 3840.135125] [] ret_from_fork+0x3f/0x70 [ 3840.135140] [] ? kthread_create_on_node+0x1e0/0x1e0 [ 3840.135162] INFO: task jbd2/md127-8:736 blocked for more than 120 seconds. [ 3840.135455] Not tainted 4.4.0-36-generic #55-Ubuntu [ 3840.135676] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 3840.135992] jbd2/md127-8 D ffff880273f13ad8 0 736 2 0x00000000 [ 3840.136013] ffff880273f13ad8 ffff880273f13aa8 ffff880276278c80 ffff880035b69900 [ 3840.136032] ffff880273f14000 ffff88027fd16d00 7fffffffffffffff ffffffff8182a6c0 [ 3840.136139] ffff880273f13c30 ffff880273f13af0 ffffffff81829ec5 0000000000000000 [ 3840.136158] Call Trace: [ 3840.136183] [] ? bit_wait+0x60/0x60 [ 3840.136232] [] schedule+0x35/0x80 [ 3840.136275] [] schedule_timeout+0x1b5/0x270 [ 3840.136313] [] ? ktime_get+0x3c/0xb0 [ 3840.136350] [] ? ktime_get+0x3c/0xb0 [ 3840.136393] [] ? bit_wait+0x60/0x60 [ 3840.136431] [] io_schedule_timeout+0xa4/0x110 [ 3840.136469] [] bit_wait_io+0x1b/0x70 [ 3840.136514] [] __wait_on_bit+0x5d/0x90 [ 3840.136555] [] ? bit_wait+0x60/0x60 [ 3840.136593] [] out_of_line_wait_on_bit+0x82/0xb0 [ 3840.136637] [] ? autoremove_wake_function+0x40/0x40 [ 3840.136685] [] __wait_on_buffer+0x32/0x40 [ 3840.136733] [] jbd2_journal_commit_transaction+0xf48/0x1870 [ 3840.136788] [] ? try_to_del_timer_sync+0x5e/0x90 [ 3840.136830] [] kjournald2+0xca/0x250 [ 3840.136880] [] ? wake_atomic_t_function+0x60/0x60 [ 3840.136919] [] ? commit_timeout+0x10/0x10 [ 3840.136946] [] kthread+0xd8/0xf0 [ 3840.136962] [] ? kthread_create_on_node+0x1e0/0x1e0 [ 3840.136977] [] ret_from_fork+0x3f/0x70 [ 3840.136992] [] ? kthread_create_on_node+0x1e0/0x1e0 [ 3840.137050] INFO: task smbd:2554 blocked for more than 120 seconds. [ 3840.137321] Not tainted 4.4.0-36-generic #55-Ubuntu [ 3840.137546] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 3840.137871] smbd D ffff880079837738 0 2554 1040 0x00000000 [ 3840.137892] ffff880079837738 ffff8800798377e8 ffff880276278c80 ffff880270a86400 [ 3840.137911] ffff880079838000 ffff88027fd16d00 7fffffffffffffff ffffffff8182a6c0 [ 3840.137929] ffff880079837890 ffff880079837750 ffffffff81829ec5 0000000000000000 [ 3840.137948] Call Trace: [ 3840.137968] [] ? bit_wait+0x60/0x60 [ 3840.137985] [] schedule+0x35/0x80 [ 3840.138000] [] schedule_timeout+0x1b5/0x270 [ 3840.138017] [] ? ktime_get+0x3c/0xb0 [ 3840.138034] [] ? bit_wait+0x60/0x60 [ 3840.138050] [] io_schedule_timeout+0xa4/0x110 [ 3840.138067] [] bit_wait_io+0x1b/0x70 [ 3840.138083] [] __wait_on_bit+0x5d/0x90 [ 3840.138099] [] ? bit_wait+0x60/0x60 [ 3840.138116] [] out_of_line_wait_on_bit+0x82/0xb0 [ 3840.138133] [] ? autoremove_wake_function+0x40/0x40 [ 3840.138150] [] do_get_write_access+0x245/0x490 [ 3840.138165] [] ? __find_get_block+0x10a/0x110 [ 3840.138179] [] ? __getblk_gfp+0x2b/0x60 [ 3840.138196] [] jbd2_journal_get_write_access+0x51/0x70 [ 3840.138215] [] __ext4_journal_get_write_access+0x3b/0x80 [ 3840.138233] [] ext4_mb_mark_diskspace_used+0x7b/0x4a0 [ 3840.138250] [] ext4_mb_new_blocks+0x33e/0x580 [ 3840.138265] [] ? ext4_find_extent+0x1b9/0x320 [ 3840.138281] [] ext4_ext_map_blocks+0x62e/0xf80 [ 3840.138301] [] ? find_get_pages_tag+0x109/0x190 [ 3840.138321] [] ext4_map_blocks+0x1ab/0x4d0 [ 3840.138338] [] ext4_writepages+0x5e8/0xd70 [ 3840.138362] [] ? locks_remove_flock+0xd7/0xe0 [ 3840.138383] [] do_writepages+0x1e/0x30 [ 3840.138399] [] __filemap_fdatawrite_range+0xc6/0x100 [ 3840.138414] [] filemap_flush+0x1c/0x20 [ 3840.138429] [] ext4_alloc_da_blocks+0x2c/0x80 [ 3840.138443] [] ext4_release_file+0x79/0xc0 [ 3840.138463] [] __fput+0xe4/0x220 [ 3840.138480] [] ____fput+0xe/0x10 [ 3840.138497] [] task_work_run+0x81/0xa0 [ 3840.138516] [] exit_to_usermode_loop+0xc2/0xd0 [ 3840.138532] [] syscall_return_slowpath+0x4e/0x60 [ 3840.138548] [] int_ret_from_sys_call+0x25/0x8f [ 3840.138566] INFO: task kworker/u8:2:4908 blocked for more than 120 seconds. [ 3840.138859] Not tainted 4.4.0-36-generic #55-Ubuntu [ 3840.139085] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 3840.139408] kworker/u8:2 D ffff880214bdf508 0 4908 2 0x00000000 [ 3840.139438] Workqueue: writeback wb_workfn (flush-9:127) [ 3840.139453] ffff880214bdf508 0000000000000003 ffff880276279900 ffff880270a80c80 [ 3840.139472] ffff880214be0000 ffff88027fd96d00 7fffffffffffffff ffffffff8182a6c0 [ 3840.139490] ffff880214bdf660 ffff880214bdf520 ffffffff81829ec5 0000000000000000 [ 3840.139507] Call Trace: [ 3840.139528] [] ? bit_wait+0x60/0x60 [ 3840.139547] [] schedule+0x35/0x80 [ 3840.139563] [] schedule_timeout+0x1b5/0x270 [ 3840.139598] [] ? raid1_unplug+0x9f/0x140 [raid1] [ 3840.139619] [] ? blk_flush_plug_list+0xaf/0x240 [ 3840.139637] [] ? ktime_get+0x3c/0xb0 [ 3840.139654] [] ? bit_wait+0x60/0x60 [ 3840.139671] [] io_schedule_timeout+0xa4/0x110 [ 3840.139687] [] bit_wait_io+0x1b/0x70 [ 3840.139703] [] __wait_on_bit+0x5d/0x90 [ 3840.139719] [] ? bit_wait+0x60/0x60 [ 3840.139745] [] out_of_line_wait_on_bit+0x82/0xb0 [ 3840.139766] [] ? autoremove_wake_function+0x40/0x40 [ 3840.139785] [] do_get_write_access+0x245/0x490 [ 3840.139800] [] ? __find_get_block+0x10a/0x110 [ 3840.139814] [] ? __getblk_gfp+0x2b/0x60 [ 3840.139830] [] jbd2_journal_get_write_access+0x51/0x70 [ 3840.139849] [] __ext4_journal_get_write_access+0x3b/0x80 [ 3840.139866] [] ext4_mb_mark_diskspace_used+0x7b/0x4a0 [ 3840.139891] [] ? ext4_mb_use_preallocated.constprop.27+0x23c/0x260 [ 3840.139908] [] ext4_mb_new_blocks+0x33e/0x580 [ 3840.139923] [] ? ext4_find_extent+0x1b9/0x320 [ 3840.139938] [] ext4_ext_map_blocks+0x62e/0xf80 [ 3840.139958] [] ? find_get_pages_tag+0x109/0x190 [ 3840.139976] [] ext4_map_blocks+0x1ab/0x4d0 [ 3840.139993] [] ext4_writepages+0x5e8/0xd70 [ 3840.140015] [] ? sd_setup_read_write_cmnd+0x47/0xa40 [ 3840.140044] [] ? sd_init_command+0x27/0xa0 [ 3840.140151] [] do_writepages+0x1e/0x30 [ 3840.140170] [] __writeback_single_inode+0x45/0x330 [ 3840.140186] [] writeback_sb_inodes+0x262/0x600 [ 3840.140204] [] __writeback_inodes_wb+0x8c/0xc0 [ 3840.140220] [] wb_writeback+0x253/0x310 [ 3840.140241] [] ? get_nr_dirty_inodes+0x51/0x80 [ 3840.140257] [] wb_workfn+0x2ea/0x400 [ 3840.140276] [] process_one_work+0x165/0x480 [ 3840.140300] [] worker_thread+0x4b/0x4c0 [ 3840.140316] [] ? process_one_work+0x480/0x480 [ 3840.140332] [] ? process_one_work+0x480/0x480 [ 3840.140346] [] kthread+0xd8/0xf0 [ 3840.140362] [] ? kthread_create_on_node+0x1e0/0x1e0 [ 3840.140378] [] ret_from_fork+0x3f/0x70 [ 3840.140392] [] ? kthread_create_on_node+0x1e0/0x1e0