Linux Mint USB Kernel Tainted and Locked Port/Dev File

Essentially a program I was running for mining did not terminate properly with Ctrl+C it is listed as defunct and cannot be killed, kernel is tainted and normal tricks to disable the port are impossible the dev and sys entries for the device cannot be browsed or interacted with in any form without a lockup of the request.  The only solution is to reboot due to the kernel taint as far as I can find so far.

 

[1130246.811056] INFO: task minerd:21861 blocked for more than 120 seconds.
[1130246.811066]       Tainted: P           OE   4.4.0-64-generic #85~14.04.1-Ubuntu
[1130246.811068] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[1130246.811072] minerd          D ffff88051fc23b68     0 21861  21854 0x00000006
[1130246.811079]  ffff88051fc23b68 ffff8805657cb300 ffff880fecf53fc0 ffff88051fc24000
[1130246.811082]  ffff880803265438 ffff880803265018 ffff88080c629520 ffff8807eba53500
[1130246.811085]  ffff88051fc23b80 ffffffff81804585 ffff880c3556e240 ffff88051fc23bc0
[1130246.811089] Call Trace:
[1130246.811103]  [<ffffffff81804585>] schedule+0x35/0x80
[1130246.811108]  [<ffffffff815f8214>] usb_kill_urb+0x64/0xa0
[1130246.811116]  [<ffffffff810bf500>] ? prepare_to_wait_event+0xf0/0xf0
[1130246.811126]  [<ffffffffc10faf06>] acm_port_shutdown+0xd6/0x110 [cdc_acm]
[1130246.811132]  [<ffffffff814d8f4a>] tty_port_shutdown+0x6a/0xa0
[1130246.811136]  [<ffffffff814d9746>] tty_port_close+0x26/0x50
[1130246.811140]  [<ffffffffc10f8d44>] acm_tty_close+0x34/0x70 [cdc_acm]
[1130246.811143]  [<ffffffff814cffc5>] tty_release+0x105/0x570
[1130246.811149]  [<ffffffff81202994>] __fput+0xe4/0x210
[1130246.811152]  [<ffffffff81202afe>] ____fput+0xe/0x10
[1130246.811158]  [<ffffffff8109b336>] task_work_run+0x86/0xb0
[1130246.811163]  [<ffffffff8108d875>] get_signal+0x5e5/0x610
[1130246.811166]  [<ffffffff814d3ff5>] ? n_tty_read+0x325/0xa70
[1130246.811169]  [<ffffffff81803f29>] ? __schedule+0x359/0x980
[1130246.811174]  [<ffffffff8102d4a8>] do_signal+0x28/0x6c0
[1130246.811178]  [<ffffffff810bf370>] ? __wake_up_sync+0x20/0x20
[1130246.811181]  [<ffffffff814d7636>] ? tty_ldisc_deref+0x16/0x20
[1130246.811184]  [<ffffffff814cfb2c>] ? tty_read+0x9c/0xf0
[1130246.811187]  [<ffffffff81200708>] ? __vfs_read+0x18/0x40
[1130246.811191]  [<ffffffff8107981c>] exit_to_usermode_loop+0x59/0xa2
[1130246.811196]  [<ffffffff81003a6e>] syscall_return_slowpath+0x4e/0x60
[1130246.811199]  [<ffffffff81807f58>] int_ret_from_sys_call+0x25/0x8f
[1130366.807538] INFO: task minerd:21861 blocked for more than 120 seconds.
[1130366.807550]       Tainted: P           OE   4.4.0-64-generic #85~14.04.1-Ubuntu
[1130366.807553] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[1130366.807557] minerd          D ffff88051fc23b68     0 21861  21854 0x00000006
[1130366.807566]  ffff88051fc23b68 ffff8805657cb300 ffff880fecf53fc0 ffff88051fc24000
[1130366.807570]  ffff880803265438 ffff880803265018 ffff88080c629520 ffff8807eba53500
[1130366.807574]  ffff88051fc23b80 ffffffff81804585 ffff880c3556e240 ffff88051fc23bc0
[1130366.807578] Call Trace:
[1130366.807594]  [<ffffffff81804585>] schedule+0x35/0x80
[1130366.807601]  [<ffffffff815f8214>] usb_kill_urb+0x64/0xa0
[1130366.807609]  [<ffffffff810bf500>] ? prepare_to_wait_event+0xf0/0xf0
[1130366.807621]  [<ffffffffc10faf06>] acm_port_shutdown+0xd6/0x110 [cdc_acm]
[1130366.807628]  [<ffffffff814d8f4a>] tty_port_shutdown+0x6a/0xa0
[1130366.807632]  [<ffffffff814d9746>] tty_port_close+0x26/0x50
[1130366.807637]  [<ffffffffc10f8d44>] acm_tty_close+0x34/0x70 [cdc_acm]
[1130366.807641]  [<ffffffff814cffc5>] tty_release+0x105/0x570
[1130366.807648]  [<ffffffff81202994>] __fput+0xe4/0x210
[1130366.807652]  [<ffffffff81202afe>] ____fput+0xe/0x10
[1130366.807658]  [<ffffffff8109b336>] task_work_run+0x86/0xb0
[1130366.807664]  [<ffffffff8108d875>] get_signal+0x5e5/0x610
[1130366.807668]  [<ffffffff814d3ff5>] ? n_tty_read+0x325/0xa70
[1130366.807672]  [<ffffffff81803f29>] ? __schedule+0x359/0x980
[1130366.807678]  [<ffffffff8102d4a8>] do_signal+0x28/0x6c0
[1130366.807682]  [<ffffffff810bf370>] ? __wake_up_sync+0x20/0x20
[1130366.807686]  [<ffffffff814d7636>] ? tty_ldisc_deref+0x16/0x20
[1130366.807689]  [<ffffffff814cfb2c>] ? tty_read+0x9c/0xf0
[1130366.807694]  [<ffffffff81200708>] ? __vfs_read+0x18/0x40
[1130366.807698]  [<ffffffff8107981c>] exit_to_usermode_loop+0x59/0xa2
[1130366.807704]  [<ffffffff81003a6e>] syscall_return_slowpath+0x4e/0x60
[1130366.807708]  [<ffffffff81807f58>] int_ret_from_sys_call+0x25/0x8f
[1130486.803970] INFO: task minerd:21861 blocked for more than 120 seconds.
[1130486.803981]       Tainted: P           OE   4.4.0-64-generic #85~14.04.1-Ubuntu
[1130486.803983] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[1130486.803986] minerd          D ffff88051fc23b68     0 21861  21854 0x00000006
[1130486.803994]  ffff88051fc23b68 ffff8805657cb300 ffff880fecf53fc0 ffff88051fc24000
[1130486.803998]  ffff880803265438 ffff880803265018 ffff88080c629520 ffff8807eba53500
[1130486.804001]  ffff88051fc23b80 ffffffff81804585 ffff880c3556e240 ffff88051fc23bc0
[1130486.804004] Call Trace:
[1130486.804017]  [<ffffffff81804585>] schedule+0x35/0x80
[1130486.804023]  [<ffffffff815f8214>] usb_kill_urb+0x64/0xa0
[1130486.804031]  [<ffffffff810bf500>] ? prepare_to_wait_event+0xf0/0xf0
[1130486.804041]  [<ffffffffc10faf06>] acm_port_shutdown+0xd6/0x110 [cdc_acm]
[1130486.804047]  [<ffffffff814d8f4a>] tty_port_shutdown+0x6a/0xa0
[1130486.804051]  [<ffffffff814d9746>] tty_port_close+0x26/0x50
[1130486.804054]  [<ffffffffc10f8d44>] acm_tty_close+0x34/0x70 [cdc_acm]
[1130486.804058]  [<ffffffff814cffc5>] tty_release+0x105/0x570
[1130486.804064]  [<ffffffff81202994>] __fput+0xe4/0x210
[1130486.804067]  [<ffffffff81202afe>] ____fput+0xe/0x10
[1130486.804072]  [<ffffffff8109b336>] task_work_run+0x86/0xb0
[1130486.804077]  [<ffffffff8108d875>] get_signal+0x5e5/0x610
[1130486.804080]  [<ffffffff814d3ff5>] ? n_tty_read+0x325/0xa70
[1130486.804083]  [<ffffffff81803f29>] ? __schedule+0x359/0x980
[1130486.804088]  [<ffffffff8102d4a8>] do_signal+0x28/0x6c0
[1130486.804092]  [<ffffffff810bf370>] ? __wake_up_sync+0x20/0x20
[1130486.804095]  [<ffffffff814d7636>] ? tty_ldisc_deref+0x16/0x20
[1130486.804097]  [<ffffffff814cfb2c>] ? tty_read+0x9c/0xf0
[1130486.804101]  [<ffffffff81200708>] ? __vfs_read+0x18/0x40
[1130486.804105]  [<ffffffff8107981c>] exit_to_usermode_loop+0x59/0xa2
[1130486.804110]  [<ffffffff81003a6e>] syscall_return_slowpath+0x4e/0x60
[1130486.804113]  [<ffffffff81807f58>] int_ret_from_sys_call+0x25/0x8f
[1130606.800437] INFO: task minerd:21861 blocked for more than 120 seconds.
[1130606.800447]       Tainted: P           OE   4.4.0-64-generic #85~14.04.1-Ubuntu
[1130606.800449] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[1130606.800453] minerd          D ffff88051fc23b68     0 21861  21854 0x00000006
[1130606.800460]  ffff88051fc23b68 ffff8805657cb300 ffff880fecf53fc0 ffff88051fc24000
[1130606.800464]  ffff880803265438 ffff880803265018 ffff88080c629520 ffff8807eba53500
[1130606.800467]  ffff88051fc23b80 ffffffff81804585 ffff880c3556e240 ffff88051fc23bc0
[1130606.800470] Call Trace:
[1130606.800483]  [<ffffffff81804585>] schedule+0x35/0x80
[1130606.800489]  [<ffffffff815f8214>] usb_kill_urb+0x64/0xa0
[1130606.800497]  [<ffffffff810bf500>] ? prepare_to_wait_event+0xf0/0xf0
[1130606.800506]  [<ffffffffc10faf06>] acm_port_shutdown+0xd6/0x110 [cdc_acm]
[1130606.800512]  [<ffffffff814d8f4a>] tty_port_shutdown+0x6a/0xa0
[1130606.800516]  [<ffffffff814d9746>] tty_port_close+0x26/0x50
[1130606.800520]  [<ffffffffc10f8d44>] acm_tty_close+0x34/0x70 [cdc_acm]
[1130606.800523]  [<ffffffff814cffc5>] tty_release+0x105/0x570
[1130606.800529]  [<ffffffff81202994>] __fput+0xe4/0x210
[1130606.800532]  [<ffffffff81202afe>] ____fput+0xe/0x10
[1130606.800538]  [<ffffffff8109b336>] task_work_run+0x86/0xb0
[1130606.800543]  [<ffffffff8108d875>] get_signal+0x5e5/0x610
[1130606.800546]  [<ffffffff814d3ff5>] ? n_tty_read+0x325/0xa70
[1130606.800549]  [<ffffffff81803f29>] ? __schedule+0x359/0x980
[1130606.800554]  [<ffffffff8102d4a8>] do_signal+0x28/0x6c0
[1130606.800557]  [<ffffffff810bf370>] ? __wake_up_sync+0x20/0x20
[1130606.800561]  [<ffffffff814d7636>] ? tty_ldisc_deref+0x16/0x20
[1130606.800563]  [<ffffffff814cfb2c>] ? tty_read+0x9c/0xf0
[1130606.800567]  [<ffffffff81200708>] ? __vfs_read+0x18/0x40
[1130606.800571]  [<ffffffff8107981c>] exit_to_usermode_loop+0x59/0xa2
[1130606.800575]  [<ffffffff81003a6e>] syscall_return_slowpath+0x4e/0x60
[1130606.800579]  [<ffffffff81807f58>] int_ret_from_sys_call+0x25/0x8f
[1130726.797019] INFO: task minerd:21861 blocked for more than 120 seconds.
[1130726.797035]       Tainted: P           OE   4.4.0-64-generic #85~14.04.1-Ubuntu
[1130726.797040] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[1130726.797046] minerd          D ffff88051fc23b68     0 21861  21854 0x00000006
[1130726.797060]  ffff88051fc23b68 ffff8805657cb300 ffff880fecf53fc0 ffff88051fc24000
[1130726.797068]  ffff880803265438 ffff880803265018 ffff88080c629520 ffff8807eba53500
[1130726.797074]  ffff88051fc23b80 ffffffff81804585 ffff880c3556e240 ffff88051fc23bc0
[1130726.797082] Call Trace:
[1130726.797101]  [<ffffffff81804585>] schedule+0x35/0x80
[1130726.797111]  [<ffffffff815f8214>] usb_kill_urb+0x64/0xa0
[1130726.797124]  [<ffffffff810bf500>] ? prepare_to_wait_event+0xf0/0xf0
[1130726.797142]  [<ffffffffc10faf06>] acm_port_shutdown+0xd6/0x110 [cdc_acm]
[1130726.797151]  [<ffffffff814d8f4a>] tty_port_shutdown+0x6a/0xa0
[1130726.797158]  [<ffffffff814d9746>] tty_port_close+0x26/0x50
[1130726.797167]  [<ffffffffc10f8d44>] acm_tty_close+0x34/0x70 [cdc_acm]
[1130726.797174]  [<ffffffff814cffc5>] tty_release+0x105/0x570
[1130726.797184]  [<ffffffff81202994>] __fput+0xe4/0x210
[1130726.797191]  [<ffffffff81202afe>] ____fput+0xe/0x10
[1130726.797201]  [<ffffffff8109b336>] task_work_run+0x86/0xb0
[1130726.797210]  [<ffffffff8108d875>] get_signal+0x5e5/0x610
[1130726.797216]  [<ffffffff814d3ff5>] ? n_tty_read+0x325/0xa70
[1130726.797223]  [<ffffffff81803f29>] ? __schedule+0x359/0x980
[1130726.797233]  [<ffffffff8102d4a8>] do_signal+0x28/0x6c0
[1130726.797240]  [<ffffffff810bf370>] ? __wake_up_sync+0x20/0x20
[1130726.797247]  [<ffffffff814d7636>] ? tty_ldisc_deref+0x16/0x20
[1130726.797253]  [<ffffffff814cfb2c>] ? tty_read+0x9c/0xf0
[1130726.797260]  [<ffffffff81200708>] ? __vfs_read+0x18/0x40
[1130726.797267]  [<ffffffff8107981c>] exit_to_usermode_loop+0x59/0xa2
[1130726.797275]  [<ffffffff81003a6e>] syscall_return_slowpath+0x4e/0x60
[1130726.797282]  [<ffffffff81807f58>] int_ret_from_sys_call+0x25/0x8f
[1130846.793476] INFO: task minerd:21861 blocked for more than 120 seconds.
[1130846.793494]       Tainted: P           OE   4.4.0-64-generic #85~14.04.1-Ubuntu
[1130846.793498] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[1130846.793504] minerd          D ffff88051fc23b68     0 21861  21854 0x00000006
[1130846.793517]  ffff88051fc23b68 ffff8805657cb300 ffff880fecf53fc0 ffff88051fc24000
[1130846.793525]  ffff880803265438 ffff880803265018 ffff88080c629520 ffff8807eba53500
[1130846.793531]  ffff88051fc23b80 ffffffff81804585 ffff880c3556e240 ffff88051fc23bc0
[1130846.793538] Call Trace:
[1130846.793559]  [<ffffffff81804585>] schedule+0x35/0x80
[1130846.793569]  [<ffffffff815f8214>] usb_kill_urb+0x64/0xa0
[1130846.793587]  [<ffffffff810bf500>] ? prepare_to_wait_event+0xf0/0xf0
[1130846.793604]  [<ffffffffc10faf06>] acm_port_shutdown+0xd6/0x110 [cdc_acm]
[1130846.793615]  [<ffffffff814d8f4a>] tty_port_shutdown+0x6a/0xa0
[1130846.793622]  [<ffffffff814d9746>] tty_port_close+0x26/0x50
[1130846.793631]  [<ffffffffc10f8d44>] acm_tty_close+0x34/0x70 [cdc_acm]
[1130846.793637]  [<ffffffff814cffc5>] tty_release+0x105/0x570
[1130846.793647]  [<ffffffff81202994>] __fput+0xe4/0x210
[1130846.793654]  [<ffffffff81202afe>] ____fput+0xe/0x10
[1130846.793663]  [<ffffffff8109b336>] task_work_run+0x86/0xb0
[1130846.793672]  [<ffffffff8108d875>] get_signal+0x5e5/0x610
[1130846.793679]  [<ffffffff814d3ff5>] ? n_tty_read+0x325/0xa70
[1130846.793685]  [<ffffffff81803f29>] ? __schedule+0x359/0x980
[1130846.793695]  [<ffffffff8102d4a8>] do_signal+0x28/0x6c0
[1130846.793702]  [<ffffffff810bf370>] ? __wake_up_sync+0x20/0x20
[1130846.793708]  [<ffffffff814d7636>] ? tty_ldisc_deref+0x16/0x20
[1130846.793714]  [<ffffffff814cfb2c>] ? tty_read+0x9c/0xf0
[1130846.793721]  [<ffffffff81200708>] ? __vfs_read+0x18/0x40
[1130846.793728]  [<ffffffff8107981c>] exit_to_usermode_loop+0x59/0xa2
[1130846.793736]  [<ffffffff81003a6e>] syscall_return_slowpath+0x4e/0x60
[1130846.793743]  [<ffffffff81807f58>] int_ret_from_sys_call+0x25/0x8f
[1130966.789951] INFO: task minerd:21861 blocked for more than 120 seconds.
[1130966.789967]       Tainted: P           OE   4.4.0-64-generic #85~14.04.1-Ubuntu
[1130966.789972] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[1130966.789978] minerd          D ffff88051fc23b68     0 21861  21854 0x00000006
[1130966.789991]  ffff88051fc23b68 ffff8805657cb300 ffff880fecf53fc0 ffff88051fc24000
[1130966.789999]  ffff880803265438 ffff880803265018 ffff88080c629520 ffff8807eba53500
[1130966.790006]  ffff88051fc23b80 ffffffff81804585 ffff880c3556e240 ffff88051fc23bc0
[1130966.790012] Call Trace:
[1130966.790032]  [<ffffffff81804585>] schedule+0x35/0x80
[1130966.790042]  [<ffffffff815f8214>] usb_kill_urb+0x64/0xa0
[1130966.790054]  [<ffffffff810bf500>] ? prepare_to_wait_event+0xf0/0xf0
[1130966.790071]  [<ffffffffc10faf06>] acm_port_shutdown+0xd6/0x110 [cdc_acm]
[1130966.790082]  [<ffffffff814d8f4a>] tty_port_shutdown+0x6a/0xa0
[1130966.790089]  [<ffffffff814d9746>] tty_port_close+0x26/0x50
[1130966.790098]  [<ffffffffc10f8d44>] acm_tty_close+0x34/0x70 [cdc_acm]
[1130966.790104]  [<ffffffff814cffc5>] tty_release+0x105/0x570
[1130966.790114]  [<ffffffff81202994>] __fput+0xe4/0x210
[1130966.790121]  [<ffffffff81202afe>] ____fput+0xe/0x10
[1130966.790130]  [<ffffffff8109b336>] task_work_run+0x86/0xb0
[1130966.790139]  [<ffffffff8108d875>] get_signal+0x5e5/0x610
[1130966.790146]  [<ffffffff814d3ff5>] ? n_tty_read+0x325/0xa70
[1130966.790152]  [<ffffffff81803f29>] ? __schedule+0x359/0x980
[1130966.790161]  [<ffffffff8102d4a8>] do_signal+0x28/0x6c0
[1130966.790168]  [<ffffffff810bf370>] ? __wake_up_sync+0x20/0x20
[1130966.790175]  [<ffffffff814d7636>] ? tty_ldisc_deref+0x16/0x20
[1130966.790180]  [<ffffffff814cfb2c>] ? tty_read+0x9c/0xf0
[1130966.790187]  [<ffffffff81200708>] ? __vfs_read+0x18/0x40
[1130966.790194]  [<ffffffff8107981c>] exit_to_usermode_loop+0x59/0xa2
[1130966.790202]  [<ffffffff81003a6e>] syscall_return_slowpath+0x4e/0x60
[1130966.790209]  [<ffffffff81807f58>] int_ret_from_sys_call+0x25/0x8f
[1131086.786307] INFO: task minerd:21861 blocked for more than 120 seconds.
[1131086.786318]       Tainted: P           OE   4.4.0-64-generic #85~14.04.1-Ubuntu
[1131086.786320] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[1131086.786323] minerd          D ffff88051fc23b68     0 21861  21854 0x00000006
[1131086.786330]  ffff88051fc23b68 ffff8805657cb300 ffff880fecf53fc0 ffff88051fc24000
[1131086.786334]  ffff880803265438 ffff880803265018 ffff88080c629520 ffff8807eba53500
[1131086.786337]  ffff88051fc23b80 ffffffff81804585 ffff880c3556e240 ffff88051fc23bc0
[1131086.786341] Call Trace:
[1131086.786354]  [<ffffffff81804585>] schedule+0x35/0x80
[1131086.786359]  [<ffffffff815f8214>] usb_kill_urb+0x64/0xa0
[1131086.786367]  [<ffffffff810bf500>] ? prepare_to_wait_event+0xf0/0xf0
[1131086.786377]  [<ffffffffc10faf06>] acm_port_shutdown+0xd6/0x110 [cdc_acm]
[1131086.786383]  [<ffffffff814d8f4a>] tty_port_shutdown+0x6a/0xa0
[1131086.786386]  [<ffffffff814d9746>] tty_port_close+0x26/0x50
[1131086.786390]  [<ffffffffc10f8d44>] acm_tty_close+0x34/0x70 [cdc_acm]
[1131086.786393]  [<ffffffff814cffc5>] tty_release+0x105/0x570
[1131086.786399]  [<ffffffff81202994>] __fput+0xe4/0x210
[1131086.786402]  [<ffffffff81202afe>] ____fput+0xe/0x10
[1131086.786408]  [<ffffffff8109b336>] task_work_run+0x86/0xb0
[1131086.786413]  [<ffffffff8108d875>] get_signal+0x5e5/0x610
[1131086.786416]  [<ffffffff814d3ff5>] ? n_tty_read+0x325/0xa70
[1131086.786418]  [<ffffffff81803f29>] ? __schedule+0x359/0x980
[1131086.786424]  [<ffffffff8102d4a8>] do_signal+0x28/0x6c0
[1131086.786427]  [<ffffffff810bf370>] ? __wake_up_sync+0x20/0x20
[1131086.786430]  [<ffffffff814d7636>] ? tty_ldisc_deref+0x16/0x20
[1131086.786436]  [<ffffffff814cfb2c>] ? tty_read+0x9c/0xf0
[1131086.786439]  [<ffffffff81200708>] ? __vfs_read+0x18/0x40
[1131086.786443]  [<ffffffff8107981c>] exit_to_usermode_loop+0x59/0xa2
[1131086.786448]  [<ffffffff81003a6e>] syscall_return_slowpath+0x4e/0x60
[1131086.786452]  [<ffffffff81807f58>] int_ret_from_sys_call+0x25/0x8f
[1131206.782895] INFO: task minerd:21861 blocked for more than 120 seconds.
[1131206.782912]       Tainted: P           OE   4.4.0-64-generic #85~14.04.1-Ubuntu
[1131206.782917] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[1131206.782923] minerd          D ffff88051fc23b68     0 21861  21854 0x00000006
[1131206.782936]  ffff88051fc23b68 ffff8805657cb300 ffff880fecf53fc0 ffff88051fc24000
[1131206.782943]  ffff880803265438 ffff880803265018 ffff88080c629520 ffff8807eba53500
[1131206.782950]  ffff88051fc23b80 ffffffff81804585 ffff880c3556e240 ffff88051fc23bc0
[1131206.782957] Call Trace:
[1131206.782977]  [<ffffffff81804585>] schedule+0x35/0x80
[1131206.782987]  [<ffffffff815f8214>] usb_kill_urb+0x64/0xa0
[1131206.782999]  [<ffffffff810bf500>] ? prepare_to_wait_event+0xf0/0xf0
[1131206.783017]  [<ffffffffc10faf06>] acm_port_shutdown+0xd6/0x110 [cdc_acm]
[1131206.783027]  [<ffffffff814d8f4a>] tty_port_shutdown+0x6a/0xa0
[1131206.783034]  [<ffffffff814d9746>] tty_port_close+0x26/0x50
[1131206.783043]  [<ffffffffc10f8d44>] acm_tty_close+0x34/0x70 [cdc_acm]
[1131206.783050]  [<ffffffff814cffc5>] tty_release+0x105/0x570
[1131206.783060]  [<ffffffff81202994>] __fput+0xe4/0x210
[1131206.783067]  [<ffffffff81202afe>] ____fput+0xe/0x10
[1131206.783076]  [<ffffffff8109b336>] task_work_run+0x86/0xb0
[1131206.783085]  [<ffffffff8108d875>] get_signal+0x5e5/0x610
[1131206.783092]  [<ffffffff814d3ff5>] ? n_tty_read+0x325/0xa70
[1131206.783098]  [<ffffffff81803f29>] ? __schedule+0x359/0x980
[1131206.783110]  [<ffffffff8102d4a8>] do_signal+0x28/0x6c0
[1131206.783117]  [<ffffffff810bf370>] ? __wake_up_sync+0x20/0x20
[1131206.783124]  [<ffffffff814d7636>] ? tty_ldisc_deref+0x16/0x20
[1131206.783130]  [<ffffffff814cfb2c>] ? tty_read+0x9c/0xf0
[1131206.783137]  [<ffffffff81200708>] ? __vfs_read+0x18/0x40
[1131206.783144]  [<ffffffff8107981c>] exit_to_usermode_loop+0x59/0xa2
[1131206.783157]  [<ffffffff81003a6e>] syscall_return_slowpath+0x4e/0x60
[1131206.783164]  [<ffffffff81807f58>] int_ret_from_sys_call+0x25/0x8f
[1131326.779349] INFO: task minerd:21861 blocked for more than 120 seconds.
[1131326.779366]       Tainted: P           OE   4.4.0-64-generic #85~14.04.1-Ubuntu
[1131326.779371] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[1131326.779376] minerd          D ffff88051fc23b68     0 21861  21854 0x00000006
[1131326.779389]  ffff88051fc23b68 ffff8805657cb300 ffff880fecf53fc0 ffff88051fc24000
[1131326.779397]  ffff880803265438 ffff880803265018 ffff88080c629520 ffff8807eba53500
[1131326.779404]  ffff88051fc23b80 ffffffff81804585 ffff880c3556e240 ffff88051fc23bc0
[1131326.779410] Call Trace:
[1131326.779430]  [<ffffffff81804585>] schedule+0x35/0x80
[1131326.779440]  [<ffffffff815f8214>] usb_kill_urb+0x64/0xa0
[1131326.779453]  [<ffffffff810bf500>] ? prepare_to_wait_event+0xf0/0xf0
[1131326.779469]  [<ffffffffc10faf06>] acm_port_shutdown+0xd6/0x110 [cdc_acm]
[1131326.779479]  [<ffffffff814d8f4a>] tty_port_shutdown+0x6a/0xa0
[1131326.779486]  [<ffffffff814d9746>] tty_port_close+0x26/0x50
[1131326.779495]  [<ffffffffc10f8d44>] acm_tty_close+0x34/0x70 [cdc_acm]
[1131326.779501]  [<ffffffff814cffc5>] tty_release+0x105/0x570
[1131326.779511]  [<ffffffff81202994>] __fput+0xe4/0x210
[1131326.779518]  [<ffffffff81202afe>] ____fput+0xe/0x10
[1131326.779528]  [<ffffffff8109b336>] task_work_run+0x86/0xb0
[1131326.779537]  [<ffffffff8108d875>] get_signal+0x5e5/0x610
[1131326.779543]  [<ffffffff814d3ff5>] ? n_tty_read+0x325/0xa70
[1131326.779550]  [<ffffffff81803f29>] ? __schedule+0x359/0x980
[1131326.779559]  [<ffffffff8102d4a8>] do_signal+0x28/0x6c0
[1131326.779566]  [<ffffffff810bf370>] ? __wake_up_sync+0x20/0x20
[1131326.779573]  [<ffffffff814d7636>] ? tty_ldisc_deref+0x16/0x20
[1131326.779578]  [<ffffffff814cfb2c>] ? tty_read+0x9c/0xf0
[1131326.779585]  [<ffffffff81200708>] ? __vfs_read+0x18/0x40
[1131326.779592]  [<ffffffff8107981c>] exit_to_usermode_loop+0x59/0xa2
[1131326.779600]  [<ffffffff81003a6e>] syscall_return_slowpath+0x4e/0x60
[1131326.779607]  [<ffffffff81807f58>] int_ret_from_sys_call+0x25/0x8f

ps aux|grep minerd
root     21855  0.0  0.0      0     0 ?        Zl   13:03   0:00 [minerd] <defunct>
root     22322  0.0  0.0 103840  5920 ?        D    13:28   0:00 /home/one/MyFiles/Bank/mining/cpuminer-gridseed-syklon-support/cpuminer-gc3355-master/minerd --gc3355-detect -o stratum+tcp://stratum.aikapool.com:7919 -u coinguy.zworker -p qbumr4YoPk25dYRxja2y
root     24899  0.0  0.0  11764  2076 pts/4    S+   16:17   0:00 grep --colour=auto minerd
box user # kill -kill 21855
box user # ps aux|grep minerd
root     21855  0.0  0.0      0     0 ?        Zl   13:03   0:00 [minerd] <defunct>
root     22322  0.0  0.0 103840  5920 ?        D    13:28   0:00 /home/one/MyFiles/Bank/mining/cpuminer-gridseed-syklon-support/cpuminer-gc3355-master/minerd --gc3355-detect -o stratum+tcp://stratum.aikapool.com:7919 -u coinguy.zworker -p qbumr4YoPk25dYRxja2y
root     24901  0.0  0.0  11764  2248 pts/4    S+   16:17   0:00 grep --colour=auto minerd


[1131435.736796] usb 2-4: USB disconnect, device number 17
[1131437.743307] usb 2-1: USB disconnect, device number 15

cd /sys/bus/usb/devices
 ls
1-0:1.0  2-10      2-9      3-0:1.0  3-1:1.0    4-1      4-1.1:1.0  usb3
2-0:1.0  2-10:1.0  2-9:1.0  3-1      3-1.1:1.0  4-1.1    usb1       usb4
2-1      2-1:1.1   2-9:1.1  3-1.1    4-0:1.0    4-1:1.0  usb2

lsusb and even manual reset hang:

lsusb


^C^C^C^C

echo 0 > 2-1/authorized


cat /dev/bus/usb/002/001
^C^C

^C^C^C^C^C^C^C^C^C^C^C^C^C


 

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