[ 8751.809137] INFO: task khubd:76 blocked for more than 120 seconds.
[ 8751.809146] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 8751.809151] khubd           D ffff88009c28e5b0     0    76      2 0x00000000
[ 8751.809159]  ffff8801285c7b58 0000000000000046 0000000000014280 ffff8801285c7fd8
[ 8751.809166]  ffff8801285c7fd8 0000000000014280 ffff8801298d90c0 ffffffff81a13309
[ 8751.809173]  0000000000002173 000000000004a3c3 ffffffff81a12ee0 ffff8801285c7fd8
[ 8751.809181] Call Trace:
[ 8751.809218]  [<ffffffffa01da905>] ? ohci_urb_dequeue+0x75/0xb4 [ohci_hcd]
[ 8751.809227]  [<ffffffff813530a7>] ? put_device+0x17/0x20
[ 8751.809234]  [<ffffffff814d10e9>] schedule+0x29/0x70
[ 8751.809252]  [<ffffffffa0010775>] usb_kill_urb+0x75/0xb0 [usbcore]
[ 8751.809259]  [<ffffffff8107c420>] ? wake_up_bit+0x30/0x30
[ 8751.809281]  [<ffffffffa000f3d5>] usb_hcd_flush_endpoint+0xb5/0x190 [usbcore]
[ 8751.809287]  [<ffffffff81362c61>] ? rpm_suspend+0x4a1/0x720
[ 8751.809306]  [<ffffffffa00120a9>] usb_disable_endpoint+0x59/0x90 [usbcore]
[ 8751.809320]  [<ffffffffa0012126>] usb_disable_interface+0x46/0x60 [usbcore]
[ 8751.809336]  [<ffffffffa0014965>] usb_unbind_interface+0x1b5/0x1c0 [usbcore]
[ 8751.809347]  [<ffffffff8135720c>] __device_release_driver+0x7c/0xe0
[ 8751.809353]  [<ffffffff81357293>] device_release_driver+0x23/0x30
[ 8751.809359]  [<ffffffff81356a66>] bus_remove_device+0xe6/0x160
[ 8751.809365]  [<ffffffff81353b97>] device_del+0x127/0x1c0
[ 8751.809382]  [<ffffffffa00121f0>] usb_disable_device+0xb0/0x270 [usbcore]
[ 8751.809395]  [<ffffffffa000891d>] usb_disconnect+0xad/0x1d0 [usbcore]
[ 8751.809410]  [<ffffffffa000a323>] hub_thread+0x433/0x16b0 [usbcore]
[ 8751.809417]  [<ffffffff8107c420>] ? wake_up_bit+0x30/0x30
[ 8751.809435]  [<ffffffffa0009ef0>] ? hub_port_debounce+0x130/0x130 [usbcore]
[ 8751.809440]  [<ffffffff8107b600>] kthread+0xc0/0xd0
[ 8751.809445]  [<ffffffff8107b540>] ? kthread_create_on_node+0x120/0x120
[ 8751.809454]  [<ffffffff814d9dec>] ret_from_fork+0x7c/0xb0
[ 8751.809461]  [<ffffffff8107b540>] ? kthread_create_on_node+0x120/0x120
[ 8871.690100] INFO: task khubd:76 blocked for more than 120 seconds.
[ 8871.690109] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 8871.690113] khubd           D ffff88009c28e5b0     0    76      2 0x00000000
[ 8871.690122]  ffff8801285c7b58 0000000000000046 0000000000014280 ffff8801285c7fd8
[ 8871.690130]  ffff8801285c7fd8 0000000000014280 ffff8801298d90c0 ffffffff81a13309
[ 8871.690136]  0000000000002173 000000000004a3c3 ffffffff81a12ee0 ffff8801285c7fd8
[ 8871.690144] Call Trace:
[ 8871.690181]  [<ffffffffa01da905>] ? ohci_urb_dequeue+0x75/0xb4 [ohci_hcd]
[ 8871.690191]  [<ffffffff813530a7>] ? put_device+0x17/0x20
[ 8871.690198]  [<ffffffff814d10e9>] schedule+0x29/0x70
[ 8871.690216]  [<ffffffffa0010775>] usb_kill_urb+0x75/0xb0 [usbcore]
[ 8871.690223]  [<ffffffff8107c420>] ? wake_up_bit+0x30/0x30
[ 8871.690245]  [<ffffffffa000f3d5>] usb_hcd_flush_endpoint+0xb5/0x190 [usbcore]
[ 8871.690251]  [<ffffffff81362c61>] ? rpm_suspend+0x4a1/0x720
[ 8871.690270]  [<ffffffffa00120a9>] usb_disable_endpoint+0x59/0x90 [usbcore]
[ 8871.690284]  [<ffffffffa0012126>] usb_disable_interface+0x46/0x60 [usbcore]
[ 8871.690300]  [<ffffffffa0014965>] usb_unbind_interface+0x1b5/0x1c0 [usbcore]
[ 8871.690315]  [<ffffffff8135720c>] __device_release_driver+0x7c/0xe0
[ 8871.690321]  [<ffffffff81357293>] device_release_driver+0x23/0x30
[ 8871.690329]  [<ffffffff81356a66>] bus_remove_device+0xe6/0x160
[ 8871.690335]  [<ffffffff81353b97>] device_del+0x127/0x1c0
[ 8871.690350]  [<ffffffffa00121f0>] usb_disable_device+0xb0/0x270 [usbcore]
[ 8871.690364]  [<ffffffffa000891d>] usb_disconnect+0xad/0x1d0 [usbcore]
[ 8871.690388]  [<ffffffffa000a323>] hub_thread+0x433/0x16b0 [usbcore]
[ 8871.690393]  [<ffffffff8107c420>] ? wake_up_bit+0x30/0x30
[ 8871.690412]  [<ffffffffa0009ef0>] ? hub_port_debounce+0x130/0x130 [usbcore]
[ 8871.690417]  [<ffffffff8107b600>] kthread+0xc0/0xd0
[ 8871.690422]  [<ffffffff8107b540>] ? kthread_create_on_node+0x120/0x120
[ 8871.690428]  [<ffffffff814d9dec>] ret_from_fork+0x7c/0xb0
[ 8871.690432]  [<ffffffff8107b540>] ? kthread_create_on_node+0x120/0x120
[ 8991.571045] INFO: task khubd:76 blocked for more than 120 seconds.
[ 8991.571059] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 8991.571065] khubd           D ffff88009c28e5b0     0    76      2 0x00000000
[ 8991.571072]  ffff8801285c7b58 0000000000000046 0000000000014280 ffff8801285c7fd8
[ 8991.571076]  ffff8801285c7fd8 0000000000014280 ffff8801298d90c0 ffffffff81a13309
[ 8991.571079]  0000000000002173 000000000004a3c3 ffffffff81a12ee0 ffff8801285c7fd8
[ 8991.571080] Call Trace:
[ 8991.571120]  [<ffffffffa01da905>] ? ohci_urb_dequeue+0x75/0xb4 [ohci_hcd]
[ 8991.571129]  [<ffffffff813530a7>] ? put_device+0x17/0x20
[ 8991.571138]  [<ffffffff814d10e9>] schedule+0x29/0x70
[ 8991.571158]  [<ffffffffa0010775>] usb_kill_urb+0x75/0xb0 [usbcore]
[ 8991.571165]  [<ffffffff8107c420>] ? wake_up_bit+0x30/0x30
[ 8991.571188]  [<ffffffffa000f3d5>] usb_hcd_flush_endpoint+0xb5/0x190 [usbcore]
[ 8991.571195]  [<ffffffff81362c61>] ? rpm_suspend+0x4a1/0x720
[ 8991.571214]  [<ffffffffa00120a9>] usb_disable_endpoint+0x59/0x90 [usbcore]
[ 8991.571233]  [<ffffffffa0012126>] usb_disable_interface+0x46/0x60 [usbcore]
[ 8991.571249]  [<ffffffffa0014965>] usb_unbind_interface+0x1b5/0x1c0 [usbcore]
[ 8991.571259]  [<ffffffff8135720c>] __device_release_driver+0x7c/0xe0
[ 8991.571265]  [<ffffffff81357293>] device_release_driver+0x23/0x30
[ 8991.571273]  [<ffffffff81356a66>] bus_remove_device+0xe6/0x160
[ 8991.571278]  [<ffffffff81353b97>] device_del+0x127/0x1c0
[ 8991.571297]  [<ffffffffa00121f0>] usb_disable_device+0xb0/0x270 [usbcore]
[ 8991.571316]  [<ffffffffa000891d>] usb_disconnect+0xad/0x1d0 [usbcore]
[ 8991.571335]  [<ffffffffa000a323>] hub_thread+0x433/0x16b0 [usbcore]
[ 8991.571340]  [<ffffffff8107c420>] ? wake_up_bit+0x30/0x30
[ 8991.571359]  [<ffffffffa0009ef0>] ? hub_port_debounce+0x130/0x130 [usbcore]
[ 8991.571368]  [<ffffffff8107b600>] kthread+0xc0/0xd0
[ 8991.571376]  [<ffffffff8107b540>] ? kthread_create_on_node+0x120/0x120
[ 8991.571381]  [<ffffffff814d9dec>] ret_from_fork+0x7c/0xb0
[ 8991.571386]  [<ffffffff8107b540>] ? kthread_create_on_node+0x120/0x120