[problem happens]

08:00:44 kernel: timeout: still 3 active urbs on EP #3
08:00:45 kernel: timeout: still 3 active urbs on EP #3
08:00:46 kernel: timeout: still 3 active urbs on EP #3

  [i disconnect the alleged problem usb audio device]

08:00:55 kernel: hub 3-0:1.0: state 7 ports 4 chg 0000 evt 0002
08:00:55 kernel: ohci-pci 0000:00:13.1: GetStatus roothub.portstatus [0] = 0x00030100 PESC CSC PPS
08:00:55 kernel: hub 3-0:1.0: port 1, status 0100, change 0003, 12 Mb/s
08:00:55 kernel: usb 3-1: USB disconnect, device number 8
08:00:55 kernel: usb 3-1: unregistering device
08:00:55 kernel: usb 3-1: unregistering interface 3-1:1.0

08:03:08 kernel: INFO: task khubd:361 blocked for more than 120 seconds.
08:03:08 kernel: Not tainted 3.13.0-rc8 #1
08:03:08 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
08:03:08 kernel: khubd           D 0000000000000000     0   361      2 0x00000000
08:03:08 kernel: ffff88004dd0fb58 0000000000000046 ffff88004dd0faf8 ffff88004dd961e0
08:03:08 kernel: ffff88004dd0ffd8 ffffffff81c16480 ffff88004dd961e0 ffff88004dd0fa80
08:03:08 kernel: 0000000000000000 0000000000000001 0000000000000000 0000000000000000
08:03:08 kernel: Call Trace:
08:03:08 kernel: [<ffffffff810c6e7d>] ? kmem_cache_free+0x13d/0x160
08:03:08 kernel: [<ffffffff8112f457>] ? release_sysfs_dirent+0x77/0x110
08:03:08 kernel: [<ffffffff815ff4b3>] schedule+0x23/0x70
08:03:08 kernel: [<ffffffff815ff6b3>] schedule_preempt_disabled+0x13/0x20
08:03:08 kernel: [<ffffffff816007ca>] __mutex_lock_slowpath+0x8a/0x120
08:03:08 kernel: [<ffffffff8160086d>] mutex_lock+0xd/0x10
08:03:08 kernel: [<ffffffff813ed828>] usb_unlocked_disable_lpm+0x28/0x60
08:03:08 kernel: [<ffffffff813fb083>] usb_unbind_interface+0x43/0x120
08:03:08 kernel: [<ffffffff81375e3e>] __device_release_driver+0x5e/0xd0
08:03:08 kernel: [<ffffffff81375ed7>] device_release_driver+0x27/0x40
08:03:08 kernel: [<ffffffff8137599a>] bus_remove_device+0xea/0x120
08:03:08 kernel: [<ffffffff81373002>] device_del+0x112/0x1a0
08:03:08 kernel: [<ffffffff813f9581>] usb_disable_device+0xa1/0x290
08:03:08 kernel: [<ffffffff813eeda7>] usb_disconnect+0xb7/0x1d0
08:03:08 kernel: [<ffffffff813f19f4>] hub_thread+0x444/0x1480
08:03:08 kernel: [<ffffffff815ff096>] ? __schedule+0x276/0x5d0
08:03:08 kernel: [<ffffffff8105c1a0>] ? __wake_up_sync+0x10/0x10
08:03:08 kernel: [<ffffffff813f15b0>] ? usb_port_resume+0x510/0x510
08:03:08 kernel: [<ffffffff81050ff3>] kthread+0xc3/0xe0
08:03:08 kernel: [<ffffffff81050f30>] ? kthread_freezable_should_stop+0x60/0x60
08:03:08 kernel: [<ffffffff816021fa>] ret_from_fork+0x7a/0xb0
08:03:08 kernel: [<ffffffff81050f30>] ? kthread_freezable_should_stop+0x60/0x60
08:03:08 kernel: INFO: task mplayer:5544 blocked for more than 120 seconds.
08:03:08 kernel: Not tainted 3.13.0-rc8 #1
08:03:08 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
08:03:08 kernel: mplayer         D 0000000000001388     0  5544      1 0x00000004
08:03:08 kernel: ffff880035ca3c38 0000000000000086 0000000000000010 ffff88004dd5c140
08:03:08 kernel: ffff880035ca3fd8 ffffffff81c16480 ffff88004dd5c140 ffff880035ca3b60
08:03:08 kernel: 0000000103ba5cc8 ffffffff81d5db00 ffffffff81d5db00 ffff88004dd5c140
08:03:08 kernel: Call Trace:
08:03:08 kernel: [<ffffffff81410fa8>] ? start_ed_unlink+0x18/0x60
08:03:08 kernel: [<ffffffff81411f48>] ? ohci_urb_dequeue+0x78/0xd0
08:03:08 kernel: [<ffffffff813f49af>] ? unlink1+0x2f/0x140
08:03:08 kernel: [<ffffffff81372052>] ? put_device+0x12/0x20
08:03:08 kernel: [<ffffffff815ff4b3>] schedule+0x23/0x70
08:03:08 kernel: [<ffffffff813f7675>] usb_kill_urb+0x55/0x90
08:03:08 kernel: [<ffffffff8105c1a0>] ? __wake_up_sync+0x10/0x10
08:03:08 kernel: [<ffffffff813f8958>] usb_start_wait_urb+0xd8/0x160
08:03:08 kernel: [<ffffffff813f7189>] ? usb_alloc_urb+0x19/0x50
08:03:08 kernel: [<ffffffff813f8c3b>] usb_control_msg+0xcb/0x110
08:03:08 kernel: [<ffffffff813f9c56>] usb_set_interface+0x136/0x2f0
08:03:08 kernel: [<ffffffffa00219fb>] snd_usb_pcm_close.isra.16+0x5b/0x90 [snd_usb_audio]
08:03:08 kernel: [<ffffffffa0021a5f>] snd_usb_playback_close+0xf/0x20 [snd_usb_audio]
08:03:08 kernel: [<ffffffff814a10f0>] snd_pcm_release_substream+0x60/0xc0
08:03:08 kernel: [<ffffffff814a1199>] snd_pcm_release+0x49/0xb0
08:03:08 kernel: [<ffffffff810cc1a2>] __fput+0xa2/0x240
08:03:08 kernel: [<ffffffff810cc379>] ____fput+0x9/0x10
08:03:08 kernel: [<ffffffff8104e127>] task_work_run+0x77/0xc0
08:03:08 kernel: [<ffffffff810026a6>] do_notify_resume+0x66/0x70
08:03:08 kernel: [<ffffffff810b6013>] ? vm_munmap+0x53/0x70
08:03:08 kernel: [<ffffffff816024a2>] int_signal+0x12/0x17

08:05:08 kernel: [<ffffffff8105c1a0>] ? __wake_up_sync+0x10/0x10
08:05:08 kernel: [<ffffffff813f15b0>] ? usb_port_resume+0x510/0x510
08:05:08 kernel: [<ffffffff81050ff3>] kthread+0xc3/0xe0
08:05:08 kernel: [<ffffffff81050f30>] ? kthread_freezable_should_stop+0x60/0x60
08:05:08 kernel: [<ffffffff816021fa>] ret_from_fork+0x7a/0xb0
08:05:08 kernel: [<ffffffff81050f30>] ? kthread_freezable_should_stop+0x60/0x60
08:05:08 kernel: INFO: task mplayer:5544 blocked for more than 120 seconds.
08:05:08 kernel: Not tainted 3.13.0-rc8 #1
08:05:08 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
08:05:08 kernel: mplayer         D 0000000000001388     0  5544      1 0x00000004
08:05:08 kernel: ffff880035ca3c38 0000000000000086 0000000000000010 ffff88004dd5c140
08:05:08 kernel: ffff880035ca3fd8 ffffffff81c16480 ffff88004dd5c140 ffff880035ca3b60
08:05:08 kernel: 0000000103ba5cc8 ffffffff81d5db00 ffffffff81d5db00 ffff88004dd5c140
08:05:08 kernel: Call Trace:
08:05:08 kernel: [<ffffffff81410fa8>] ? start_ed_unlink+0x18/0x60
08:05:08 kernel: [<ffffffff81411f48>] ? ohci_urb_dequeue+0x78/0xd0
08:05:08 kernel: [<ffffffff813f49af>] ? unlink1+0x2f/0x140
08:05:08 kernel: [<ffffffff81372052>] ? put_device+0x12/0x20
08:05:08 kernel: [<ffffffff815ff4b3>] schedule+0x23/0x70
08:05:08 kernel: [<ffffffff813f7675>] usb_kill_urb+0x55/0x90
08:05:08 kernel: [<ffffffff8105c1a0>] ? __wake_up_sync+0x10/0x10
08:05:08 kernel: [<ffffffff813f8958>] usb_start_wait_urb+0xd8/0x160
08:05:08 kernel: [<ffffffff813f7189>] ? usb_alloc_urb+0x19/0x50
08:05:08 kernel: [<ffffffff813f8c3b>] usb_control_msg+0xcb/0x110
08:05:08 kernel: [<ffffffff813f9c56>] usb_set_interface+0x136/0x2f0
08:05:08 kernel: [<ffffffffa00219fb>] snd_usb_pcm_close.isra.16+0x5b/0x90 [snd_usb_audio]
08:05:08 kernel: [<ffffffffa0021a5f>] snd_usb_playback_close+0xf/0x20 [snd_usb_audio]
08:05:08 kernel: [<ffffffff814a10f0>] snd_pcm_release_substream+0x60/0xc0
08:05:08 kernel: [<ffffffff814a1199>] snd_pcm_release+0x49/0xb0
08:05:08 kernel: [<ffffffff810cc1a2>] __fput+0xa2/0x240
08:05:08 kernel: [<ffffffff810cc379>] ____fput+0x9/0x10
08:05:08 kernel: [<ffffffff8104e127>] task_work_run+0x77/0xc0
08:05:08 kernel: [<ffffffff810026a6>] do_notify_resume+0x66/0x70
08:05:08 kernel: [<ffffffff810b6013>] ? vm_munmap+0x53/0x70
08:05:08 kernel: [<ffffffff816024a2>] int_signal+0x12/0x17
08:05:08 kernel: INFO: task lsusb:5764 blocked for more than 120 seconds.
08:05:08 kernel: Not tainted 3.13.0-rc8 #1
08:05:08 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
08:05:08 kernel: lsusb           D ffff8800471518e0     0  5764   5757 0x00000000
08:05:08 kernel: ffff88004bf1fd98 0000000000000082 ffff88004bf1fca8 ffff880013231b30
08:05:08 kernel: ffff88004bf1ffd8 ffffffff81c16480 ffff880013231b30 ffff88004bf1fcc0
08:05:08 kernel: ffff88004bf1fd88 ffffffff810d8c57 ffff88004bf1fcd8 ffffffff810d5983
08:05:08 kernel: Call Trace:
08:05:08 kernel: [<ffffffff810d8c57>] ? do_last.isra.71+0x1b7/0xc60
08:05:08 kernel: [<ffffffff810d5983>] ? inode_permission+0x13/0x50
08:05:08 kernel: [<ffffffff810d5c81>] ? link_path_walk+0x61/0x830
08:05:08 kernel: [<ffffffff81093c61>] ? unlock_page+0x21/0x30
08:05:08 kernel: [<ffffffff810e8ab9>] ? mntput_no_expire+0x49/0x1e0
08:05:08 kernel: [<ffffffff810e8c71>] ? mntput+0x21/0x30
08:05:08 kernel: [<ffffffff815ff4b3>] schedule+0x23/0x70
08:05:08 kernel: [<ffffffff815ff6b3>] schedule_preempt_disabled+0x13/0x20
08:05:08 kernel: [<ffffffff816007ca>] __mutex_lock_slowpath+0x8a/0x120
08:05:08 kernel: [<ffffffff8160086d>] mutex_lock+0xd/0x10
08:05:08 kernel: [<ffffffff813fed73>] read_descriptors+0x33/0x100
08:05:08 kernel: [<ffffffff810c7454>] ? __kmalloc+0x94/0x130
08:05:08 kernel: [<ffffffff8112dded>] sysfs_bin_read+0xdd/0x1b0
08:05:08 kernel: [<ffffffff810cb0ca>] vfs_read+0x9a/0x150
08:05:08 kernel: [<ffffffff810cb2ed>] SyS_read+0x4d/0xa0
08:05:08 kernel: [<ffffffff816022a0>] system_call_fastpath+0x16/0x1b

08:07:08 kernel: [<ffffffff8105c1a0>] ? __wake_up_sync+0x10/0x10
08:07:08 kernel: [<ffffffff813f15b0>] ? usb_port_resume+0x510/0x510
08:07:08 kernel: [<ffffffff81050ff3>] kthread+0xc3/0xe0
08:07:08 kernel: [<ffffffff81050f30>] ? kthread_freezable_should_stop+0x60/0x60
08:07:08 kernel: [<ffffffff816021fa>] ret_from_fork+0x7a/0xb0
08:07:08 kernel: [<ffffffff81050f30>] ? kthread_freezable_should_stop+0x60/0x60
08:07:08 kernel: INFO: task mplayer:5544 blocked for more than 120 seconds.
08:07:08 kernel: Not tainted 3.13.0-rc8 #1
08:07:08 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
08:07:08 kernel: mplayer         D 0000000000001388     0  5544      1 0x00000004
08:07:08 kernel: ffff880035ca3c38 0000000000000086 0000000000000010 ffff88004dd5c140
08:07:08 kernel: ffff880035ca3fd8 ffffffff81c16480 ffff88004dd5c140 ffff880035ca3b60
08:07:08 kernel: 0000000103ba5cc8 ffffffff81d5db00 ffffffff81d5db00 ffff88004dd5c140
08:07:08 kernel: Call Trace:
08:07:08 kernel: [<ffffffff81410fa8>] ? start_ed_unlink+0x18/0x60
08:07:08 kernel: [<ffffffff81411f48>] ? ohci_urb_dequeue+0x78/0xd0
08:07:08 kernel: [<ffffffff813f49af>] ? unlink1+0x2f/0x140
08:07:08 kernel: [<ffffffff81372052>] ? put_device+0x12/0x20
08:07:08 kernel: [<ffffffff815ff4b3>] schedule+0x23/0x70
08:07:08 kernel: [<ffffffff813f7675>] usb_kill_urb+0x55/0x90
08:07:08 kernel: [<ffffffff8105c1a0>] ? __wake_up_sync+0x10/0x10
08:07:08 kernel: [<ffffffff813f8958>] usb_start_wait_urb+0xd8/0x160
08:07:08 kernel: [<ffffffff813f7189>] ? usb_alloc_urb+0x19/0x50
08:07:08 kernel: [<ffffffff813f8c3b>] usb_control_msg+0xcb/0x110
08:07:08 kernel: [<ffffffff813f9c56>] usb_set_interface+0x136/0x2f0
08:07:08 kernel: [<ffffffffa00219fb>] snd_usb_pcm_close.isra.16+0x5b/0x90 [snd_usb_audio]
08:07:08 kernel: [<ffffffffa0021a5f>] snd_usb_playback_close+0xf/0x20 [snd_usb_audio]
08:07:08 kernel: [<ffffffff814a10f0>] snd_pcm_release_substream+0x60/0xc0
08:07:08 kernel: [<ffffffff814a1199>] snd_pcm_release+0x49/0xb0
08:07:08 kernel: [<ffffffff810cc1a2>] __fput+0xa2/0x240
08:07:08 kernel: [<ffffffff810cc379>] ____fput+0x9/0x10
08:07:08 kernel: [<ffffffff8104e127>] task_work_run+0x77/0xc0
08:07:08 kernel: [<ffffffff810026a6>] do_notify_resume+0x66/0x70
08:07:08 kernel: [<ffffffff810b6013>] ? vm_munmap+0x53/0x70
08:07:08 kernel: [<ffffffff816024a2>] int_signal+0x12/0x17
08:07:08 kernel: INFO: task lsusb:5764 blocked for more than 120 seconds.
08:07:08 kernel: Not tainted 3.13.0-rc8 #1
08:07:08 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
08:07:08 kernel: lsusb           D ffff8800471518e0     0  5764   5757 0x00000000
08:07:08 kernel: ffff88004bf1fd98 0000000000000082 ffff88004bf1fca8 ffff880013231b30
08:07:08 kernel: ffff88004bf1ffd8 ffffffff81c16480 ffff880013231b30 ffff88004bf1fcc0
08:07:08 kernel: ffff88004bf1fd88 ffffffff810d8c57 ffff88004bf1fcd8 ffffffff810d5983
08:07:08 kernel: Call Trace:
08:07:08 kernel: [<ffffffff810d8c57>] ? do_last.isra.71+0x1b7/0xc60
08:07:08 kernel: [<ffffffff810d5983>] ? inode_permission+0x13/0x50
08:07:08 kernel: [<ffffffff810d5c81>] ? link_path_walk+0x61/0x830
08:07:08 kernel: [<ffffffff81093c61>] ? unlock_page+0x21/0x30
08:07:08 kernel: [<ffffffff810e8ab9>] ? mntput_no_expire+0x49/0x1e0
08:07:08 kernel: [<ffffffff810e8c71>] ? mntput+0x21/0x30
08:07:08 kernel: [<ffffffff815ff4b3>] schedule+0x23/0x70
08:07:08 kernel: [<ffffffff815ff6b3>] schedule_preempt_disabled+0x13/0x20
08:07:08 kernel: [<ffffffff816007ca>] __mutex_lock_slowpath+0x8a/0x120
08:07:08 kernel: [<ffffffff8160086d>] mutex_lock+0xd/0x10
08:07:08 kernel: [<ffffffff813fed73>] read_descriptors+0x33/0x100
08:07:08 kernel: [<ffffffff810c7454>] ? __kmalloc+0x94/0x130
08:07:08 kernel: [<ffffffff8112dded>] sysfs_bin_read+0xdd/0x1b0
08:07:08 kernel: [<ffffffff810cb0ca>] vfs_read+0x9a/0x150
08:07:08 kernel: [<ffffffff810cb2ed>] SyS_read+0x4d/0xa0
08:07:08 kernel: [<ffffffff816022a0>] system_call_fastpath+0x16/0x1b

08:09:08 kernel: INFO: task khubd:361 blocked for more than 120 seconds.
08:09:08 kernel: Not tainted 3.13.0-rc8 #1
08:09:08 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
08:09:08 kernel: khubd           D 0000000000000000     0   361      2 0x00000000
08:09:08 kernel: ffff88004dd0fb58 0000000000000046 ffff88004dd0faf8 ffff88004dd961e0
08:09:08 kernel: ffff88004dd0ffd8 ffffffff81c16480 ffff88004dd961e0 ffff88004dd0fa80
08:09:08 kernel: 0000000000000000 0000000000000001 0000000000000000 0000000000000000
08:09:08 kernel: Call Trace:
08:09:08 kernel: [<ffffffff810c6e7d>] ? kmem_cache_free+0x13d/0x160
08:09:08 kernel: [<ffffffff8112f457>] ? release_sysfs_dirent+0x77/0x110
08:09:08 kernel: [<ffffffff815ff4b3>] schedule+0x23/0x70
08:09:08 kernel: [<ffffffff815ff6b3>] schedule_preempt_disabled+0x13/0x20
08:09:08 kernel: [<ffffffff816007ca>] __mutex_lock_slowpath+0x8a/0x120
08:09:08 kernel: [<ffffffff8160086d>] mutex_lock+0xd/0x10
08:09:08 kernel: [<ffffffff813ed828>] usb_unlocked_disable_lpm+0x28/0x60
08:09:08 kernel: [<ffffffff813fb083>] usb_unbind_interface+0x43/0x120
08:09:08 kernel: [<ffffffff81375e3e>] __device_release_driver+0x5e/0xd0
08:09:08 kernel: [<ffffffff81375ed7>] device_release_driver+0x27/0x40
08:09:08 kernel: [<ffffffff8137599a>] bus_remove_device+0xea/0x120
08:09:08 kernel: [<ffffffff81373002>] device_del+0x112/0x1a0
08:09:08 kernel: [<ffffffff813f9581>] usb_disable_device+0xa1/0x290
08:09:08 kernel: [<ffffffff813eeda7>] usb_disconnect+0xb7/0x1d0
08:09:08 kernel: [<ffffffff813f19f4>] hub_thread+0x444/0x1480
08:09:08 kernel: [<ffffffff815ff096>] ? __schedule+0x276/0x5d0
08:09:08 kernel: [<ffffffff8105c1a0>] ? __wake_up_sync+0x10/0x10
08:09:08 kernel: [<ffffffff813f15b0>] ? usb_port_resume+0x510/0x510
08:09:08 kernel: [<ffffffff81050ff3>] kthread+0xc3/0xe0
08:09:08 kernel: [<ffffffff81050f30>] ? kthread_freezable_should_stop+0x60/0x60
08:09:08 kernel: [<ffffffff816021fa>] ret_from_fork+0x7a/0xb0
08:09:08 kernel: [<ffffffff81050f30>] ? kthread_freezable_should_stop+0x60/0x60
08:09:08 kernel: INFO: task mplayer:5544 blocked for more than 120 seconds.
08:09:08 kernel: Not tainted 3.13.0-rc8 #1
08:09:08 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
08:09:08 kernel: mplayer         D 0000000000001388     0  5544      1 0x00000004
08:09:08 kernel: ffff880035ca3c38 0000000000000086 0000000000000010 ffff88004dd5c140
08:09:08 kernel: ffff880035ca3fd8 ffffffff81c16480 ffff88004dd5c140 ffff880035ca3b60
08:09:08 kernel: 0000000103ba5cc8 ffffffff81d5db00 ffffffff81d5db00 ffff88004dd5c140
08:09:08 kernel: Call Trace:
08:09:08 kernel: [<ffffffff81410fa8>] ? start_ed_unlink+0x18/0x60
08:09:08 kernel: [<ffffffff81411f48>] ? ohci_urb_dequeue+0x78/0xd0
08:09:08 kernel: [<ffffffff813f49af>] ? unlink1+0x2f/0x140
08:09:08 kernel: [<ffffffff81372052>] ? put_device+0x12/0x20
08:09:08 kernel: [<ffffffff815ff4b3>] schedule+0x23/0x70
08:09:08 kernel: [<ffffffff813f7675>] usb_kill_urb+0x55/0x90
08:09:08 kernel: [<ffffffff8105c1a0>] ? __wake_up_sync+0x10/0x10
08:09:08 kernel: [<ffffffff813f8958>] usb_start_wait_urb+0xd8/0x160
08:09:08 kernel: [<ffffffff813f7189>] ? usb_alloc_urb+0x19/0x50
08:09:08 kernel: [<ffffffff813f8c3b>] usb_control_msg+0xcb/0x110
08:09:08 kernel: [<ffffffff813f9c56>] usb_set_interface+0x136/0x2f0
08:09:08 kernel: [<ffffffffa00219fb>] snd_usb_pcm_close.isra.16+0x5b/0x90 [snd_usb_audio]
08:09:08 kernel: [<ffffffffa0021a5f>] snd_usb_playback_close+0xf/0x20 [snd_usb_audio]
08:09:08 kernel: [<ffffffff814a10f0>] snd_pcm_release_substream+0x60/0xc0
08:09:08 kernel: [<ffffffff814a1199>] snd_pcm_release+0x49/0xb0
08:09:08 kernel: [<ffffffff810cc1a2>] __fput+0xa2/0x240
08:09:08 kernel: [<ffffffff810cc379>] ____fput+0x9/0x10
08:09:08 kernel: [<ffffffff8104e127>] task_work_run+0x77/0xc0
08:09:08 kernel: [<ffffffff810026a6>] do_notify_resume+0x66/0x70
08:09:08 kernel: [<ffffffff810b6013>] ? vm_munmap+0x53/0x70
08:09:08 kernel: [<ffffffff816024a2>] int_signal+0x12/0x17