Jan 29 22:05:19 NOVA kernel: [  360.682717] INFO: task khubd:38 blocked for more than 120 seconds.
Jan 29 22:05:19 NOVA kernel: [  360.682720] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 29 22:05:19 NOVA kernel: [  360.682722] khubd           D ffff88022fc939c0     0    38      2 0x00000000
Jan 29 22:05:19 NOVA kernel: [  360.682725]  ffff88022152fac0 0000000000000046 ffff880221531700 ffff88022152ffd8
Jan 29 22:05:19 NOVA kernel: [  360.682728]  ffff88022152ffd8 ffff88022152ffd8 ffff880224124500 ffff880221531700
Jan 29 22:05:19 NOVA kernel: [  360.682730]  ffff88022152fad0 ffff88021ff2b000 ffff88022244e400 ffff88022244e410
Jan 29 22:05:19 NOVA kernel: [  360.682732] Call Trace:
Jan 29 22:05:19 NOVA kernel: [  360.682738]  [<ffffffff81680b89>] schedule+0x29/0x70
Jan 29 22:05:19 NOVA kernel: [  360.682741]  [<ffffffff814b5ee5>] usb_kill_urb+0x85/0xc0
Jan 29 22:05:19 NOVA kernel: [  360.682744]  [<ffffffff810767d0>] ? finish_wait+0x80/0x80
Jan 29 22:05:19 NOVA kernel: [  360.682746]  [<ffffffff814b504b>] usb_hcd_flush_endpoint+0xdb/0x140
Jan 29 22:05:19 NOVA kernel: [  360.682748]  [<ffffffff814b7a7e>] usb_disable_endpoint+0x5e/0x90
Jan 29 22:05:19 NOVA kernel: [  360.682749]  [<ffffffff814b7af6>] usb_disable_interface+0x46/0x60
Jan 29 22:05:19 NOVA kernel: [  360.682753]  [<ffffffff814ba14d>] usb_unbind_interface+0x18d/0x1a0
Jan 29 22:05:19 NOVA kernel: [  360.682756]  [<ffffffff8141f34c>] __device_release_driver+0x7c/0xe0
Jan 29 22:05:19 NOVA kernel: [  360.682757]  [<ffffffff8141f3dc>] device_release_driver+0x2c/0x40
Jan 29 22:05:19 NOVA kernel: [  360.682759]  [<ffffffff8141eb81>] bus_remove_device+0xe1/0x120
Jan 29 22:05:19 NOVA kernel: [  360.682761]  [<ffffffff8141c2aa>] device_del+0x12a/0x1c0
Jan 29 22:05:19 NOVA kernel: [  360.682762]  [<ffffffff814b7bbf>] usb_disable_device+0xaf/0x200
Jan 29 22:05:19 NOVA kernel: [  360.682764]  [<ffffffff814af779>] usb_disconnect+0x99/0x130
Jan 29 22:05:19 NOVA kernel: [  360.682765]  [<ffffffff814b1397>] hub_port_connect_change+0xa7/0x9e0
Jan 29 22:05:19 NOVA kernel: [  360.682767]  [<ffffffff814b20d3>] hub_events+0x403/0x690
Jan 29 22:05:19 NOVA kernel: [  360.682769]  [<ffffffff8168044f>] ? __schedule+0x3cf/0x7c0
Jan 29 22:05:19 NOVA kernel: [  360.682771]  [<ffffffff814b2395>] hub_thread+0x35/0x1a0
Jan 29 22:05:19 NOVA kernel: [  360.682772]  [<ffffffff810767d0>] ? finish_wait+0x80/0x80
Jan 29 22:05:19 NOVA kernel: [  360.682774]  [<ffffffff814b2360>] ? hub_events+0x690/0x690
Jan 29 22:05:19 NOVA kernel: [  360.682775]  [<ffffffff81075e33>] kthread+0x93/0xa0
Jan 29 22:05:19 NOVA kernel: [  360.682777]  [<ffffffff8168b024>] kernel_thread_helper+0x4/0x10
Jan 29 22:05:19 NOVA kernel: [  360.682779]  [<ffffffff81075da0>] ? kthread_freezable_should_stop+0x70/0x70
Jan 29 22:05:19 NOVA kernel: [  360.682781]  [<ffffffff8168b020>] ? gs_change+0x13/0x13