23:49:03 kernel: INFO: task khubd:990 blocked for more than 120 seconds. 23:49:03 kernel: Not tainted 3.12.6-gentoo #6 23:49:03 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 23:49:03 kernel: khubd D 0000000000000000 0 990 2 0x00000000 23:49:03 kernel: ffff88004c533a68 0000000000000046 ffff88004dd5e900 ffff88004c533fd8 23:49:03 kernel: ffff88004c533fd8 ffff88004c533fd8 ffff88004dd08000 ffff88004dd5e900 23:49:03 kernel: ffff88004c5339b8 ffffffff8105db83 ffff88004c5339b8 000003ac3b5478c6 23:49:03 kernel: Call Trace: 23:49:03 kernel: [] ? local_clock+0x43/0x50 23:49:03 kernel: [] ? put_lock_stats.isra.21+0xe/0x40 23:49:03 kernel: [] ? lock_release_holdtime.part.22+0xf3/0x1a0 23:49:03 kernel: [] ? _raw_spin_unlock_irqrestore+0x5d/0x70 23:49:03 kernel: [] ? trace_hardirqs_on_caller+0x105/0x1d0 23:49:03 kernel: [] ? trace_hardirqs_on+0xd/0x10 23:49:03 kernel: [] ? _raw_spin_unlock_irqrestore+0x3d/0x70 23:49:03 kernel: [] schedule+0x23/0x60 23:49:03 kernel: [] usb_kill_urb+0x75/0xb0 [usbcore] 23:49:03 kernel: [] ? __init_waitqueue_head+0x60/0x60 23:49:03 kernel: [] usb_hcd_flush_endpoint+0xad/0x170 [usbcore] 23:49:03 kernel: [] ? trace_hardirqs_on_caller+0x105/0x1d0 23:49:03 kernel: [] usb_disable_endpoint+0x59/0x90 [usbcore] 23:49:03 kernel: [] usb_disable_interface+0x3d/0x50 [usbcore] 23:49:03 kernel: [] usb_unbind_interface+0xf5/0x120 [usbcore] 23:49:03 kernel: [] __device_release_driver+0x64/0xd0 23:49:03 kernel: [] device_release_driver+0x29/0x40 23:49:03 kernel: [] bus_remove_device+0x113/0x160 23:49:03 kernel: [] device_del+0x135/0x1c0 23:49:03 kernel: [] usb_disable_device+0xa1/0x2a0 [usbcore] 23:49:03 kernel: [] usb_disconnect+0xb7/0x1a0 [usbcore] 23:49:03 kernel: [] hub_thread+0x4dc/0x1450 [usbcore] 23:49:03 kernel: [] ? __schedule+0x282/0x620 23:49:03 kernel: [] ? preempt_schedule+0x41/0x60 23:49:03 kernel: [] ? __init_waitqueue_head+0x60/0x60 23:49:03 kernel: [] ? usb_port_resume+0x510/0x510 [usbcore] 23:49:03 kernel: [] kthread+0xd5/0xe0 23:49:03 kernel: [] ? __init_kthread_worker+0x70/0x70 23:49:03 kernel: [] ret_from_fork+0x7a/0xb0 23:49:03 kernel: [] ? __init_kthread_worker+0x70/0x70 23:49:03 kernel: 3 locks held by khubd/990: 23:49:03 kernel: #0: (&__lockdep_no_validate__){......}, at: [] hub_thread+0xfb/0x1450 [usbcore] 23:49:03 kernel: #1: (&__lockdep_no_validate__){......}, at: [] usb_disconnect+0x61/0x1a0 [usbcore] 23:49:03 kernel: #2: (&__lockdep_no_validate__){......}, at: [] device_release_driver+0x21/0x40 23:51:03 kernel: [] usb_disable_device+0xa1/0x2a0 [usbcore] 23:51:03 kernel: [] usb_disconnect+0xb7/0x1a0 [usbcore] 23:51:03 kernel: [] hub_thread+0x4dc/0x1450 [usbcore] 23:51:03 kernel: [] ? __schedule+0x282/0x620 23:51:03 kernel: [] ? preempt_schedule+0x41/0x60 23:51:03 kernel: [] ? __init_waitqueue_head+0x60/0x60 23:51:03 kernel: [] ? usb_port_resume+0x510/0x510 [usbcore] 23:51:03 kernel: [] kthread+0xd5/0xe0 23:51:03 kernel: [] ? __init_kthread_worker+0x70/0x70 23:51:03 kernel: [] ret_from_fork+0x7a/0xb0 23:51:03 kernel: [] ? __init_kthread_worker+0x70/0x70 23:51:03 kernel: 3 locks held by khubd/990: 23:51:03 kernel: #0: (&__lockdep_no_validate__){......}, at: [] hub_thread+0xfb/0x1450 [usbcore] 23:51:03 kernel: #1: (&__lockdep_no_validate__){......}, at: [] usb_disconnect+0x61/0x1a0 [usbcore] 23:51:03 kernel: #2: (&__lockdep_no_validate__){......}, at: [] device_release_driver+0x21/0x40 23:51:03 kernel: INFO: task lsusb:5041 blocked for more than 120 seconds. 23:51:03 kernel: Not tainted 3.12.6-gentoo #6 23:51:03 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 23:51:03 kernel: lsusb D 00000000ffffffff 0 5041 4663 0x00000000 23:51:03 kernel: ffff88003ce31af8 0000000000000046 ffff88004dc9e900 ffff88003ce31fd8 23:51:03 kernel: ffff88003ce31fd8 ffff88003ce31fd8 ffff88004dda6900 ffff88004dc9e900 23:51:03 kernel: ffff88003ce31a38 000000000000027e 0000032c358e18b1 ffffffff81a37730 23:51:03 kernel: Call Trace: 23:51:03 kernel: [] ? native_sched_clock+0x26/0x80 23:51:03 kernel: [] ? sched_clock_local.constprop.2+0x15/0x80 23:51:03 kernel: [] ? sched_clock_cpu+0x65/0xc0 23:51:03 kernel: [] ? trace_hardirqs_off+0xd/0x10 23:51:03 kernel: [] ? local_clock+0x43/0x50 23:51:03 kernel: [] ? mutex_lock_nested+0x1fd/0x3c0 23:51:03 kernel: [] schedule+0x23/0x60 23:51:03 kernel: [] schedule_preempt_disabled+0x13/0x20 23:51:03 kernel: [] mutex_lock_nested+0x16b/0x3c0 23:51:03 kernel: [] ? usbdev_open+0xd6/0x220 [usbcore] 23:51:03 kernel: [] ? usbdev_open+0xd6/0x220 [usbcore] 23:51:03 kernel: [] usbdev_open+0xd6/0x220 [usbcore] 23:51:03 kernel: [] chrdev_open+0x96/0x1c0 23:51:03 kernel: [] ? lockref_get+0x1c/0x30 23:51:03 kernel: [] ? cdev_put+0x30/0x30 23:51:03 kernel: [] do_dentry_open.isra.14+0x1f6/0x290 23:51:03 kernel: [] finish_open+0x1d/0x30 23:51:03 kernel: [] do_last.isra.54+0x5a6/0xcc0 23:51:03 kernel: [] ? inode_permission+0x13/0x50 23:51:03 kernel: [] ? link_path_walk+0x68/0x8d0 23:51:03 kernel: [] ? path_init+0x269/0x4b0 23:51:03 kernel: [] path_openat+0xc1/0x660 23:51:03 kernel: [] ? sched_clock_local.constprop.2+0x15/0x80 23:51:03 kernel: [] ? sched_clock_cpu+0x65/0xc0 23:51:03 kernel: [] ? put_lock_stats.isra.21+0xe/0x40 23:51:03 kernel: [] do_filp_open+0x3e/0xa0 23:51:03 kernel: [] ? __alloc_fd+0xd4/0x120 23:51:03 kernel: [] do_sys_open+0x13c/0x230 23:51:03 kernel: [] ? trace_hardirqs_on_caller+0x105/0x1d0 23:51:03 kernel: [] SyS_open+0x1d/0x20 23:51:03 kernel: [] system_call_fastpath+0x16/0x1b 23:51:03 kernel: 1 lock held by lsusb/5041: 23:51:03 kernel: #0: (&__lockdep_no_validate__){......}, at: [] usbdev_open+0xd6/0x220 [usbcore] 23:53:03 kernel: [] usb_disable_device+0xa1/0x2a0 [usbcore] 23:53:03 kernel: [] usb_disconnect+0xb7/0x1a0 [usbcore] 23:53:03 kernel: [] hub_thread+0x4dc/0x1450 [usbcore] 23:53:03 kernel: [] ? __schedule+0x282/0x620 23:53:03 kernel: [] ? preempt_schedule+0x41/0x60 23:53:03 kernel: [] ? __init_waitqueue_head+0x60/0x60 23:53:03 kernel: [] ? usb_port_resume+0x510/0x510 [usbcore] 23:53:03 kernel: [] kthread+0xd5/0xe0 23:53:03 kernel: [] ? __init_kthread_worker+0x70/0x70 23:53:03 kernel: [] ret_from_fork+0x7a/0xb0 23:53:03 kernel: [] ? __init_kthread_worker+0x70/0x70 23:53:03 kernel: 3 locks held by khubd/990: 23:53:03 kernel: #0: (&__lockdep_no_validate__){......}, at: [] hub_thread+0xfb/0x1450 [usbcore] 23:53:03 kernel: #1: (&__lockdep_no_validate__){......}, at: [] usb_disconnect+0x61/0x1a0 [usbcore] 23:53:03 kernel: #2: (&__lockdep_no_validate__){......}, at: [] device_release_driver+0x21/0x40 23:53:03 kernel: INFO: task lsusb:5041 blocked for more than 120 seconds. 23:53:03 kernel: Not tainted 3.12.6-gentoo #6 23:53:03 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 23:53:03 kernel: lsusb D 00000000ffffffff 0 5041 4663 0x00000000 23:53:03 kernel: ffff88003ce31af8 0000000000000046 ffff88004dc9e900 ffff88003ce31fd8 23:53:03 kernel: ffff88003ce31fd8 ffff88003ce31fd8 ffff88004dda6900 ffff88004dc9e900 23:53:03 kernel: ffff88003ce31a38 000000000000027e 0000032c358e18b1 ffffffff81a37730 23:53:03 kernel: Call Trace: 23:53:03 kernel: [] ? native_sched_clock+0x26/0x80 23:53:03 kernel: [] ? sched_clock_local.constprop.2+0x15/0x80 23:53:03 kernel: [] ? sched_clock_cpu+0x65/0xc0 23:53:03 kernel: [] ? trace_hardirqs_off+0xd/0x10 23:53:03 kernel: [] ? local_clock+0x43/0x50 23:53:03 kernel: [] ? mutex_lock_nested+0x1fd/0x3c0 23:53:03 kernel: [] schedule+0x23/0x60 23:53:03 kernel: [] schedule_preempt_disabled+0x13/0x20 23:53:03 kernel: [] mutex_lock_nested+0x16b/0x3c0 23:53:03 kernel: [] ? usbdev_open+0xd6/0x220 [usbcore] 23:53:03 kernel: [] ? usbdev_open+0xd6/0x220 [usbcore] 23:53:03 kernel: [] usbdev_open+0xd6/0x220 [usbcore] 23:53:03 kernel: [] chrdev_open+0x96/0x1c0 23:53:03 kernel: [] ? lockref_get+0x1c/0x30 23:53:03 kernel: [] ? cdev_put+0x30/0x30 23:53:03 kernel: [] do_dentry_open.isra.14+0x1f6/0x290 23:53:03 kernel: [] finish_open+0x1d/0x30 23:53:03 kernel: [] do_last.isra.54+0x5a6/0xcc0 23:53:03 kernel: [] ? inode_permission+0x13/0x50 23:53:03 kernel: [] ? link_path_walk+0x68/0x8d0 23:53:03 kernel: [] ? path_init+0x269/0x4b0 23:53:03 kernel: [] path_openat+0xc1/0x660 23:53:03 kernel: [] ? sched_clock_local.constprop.2+0x15/0x80 23:53:03 kernel: [] ? sched_clock_cpu+0x65/0xc0 23:53:03 kernel: [] ? put_lock_stats.isra.21+0xe/0x40 23:53:03 kernel: [] do_filp_open+0x3e/0xa0 23:53:03 kernel: [] ? __alloc_fd+0xd4/0x120 23:53:03 kernel: [] do_sys_open+0x13c/0x230 23:53:03 kernel: [] ? trace_hardirqs_on_caller+0x105/0x1d0 23:53:03 kernel: [] SyS_open+0x1d/0x20 23:53:03 kernel: [] system_call_fastpath+0x16/0x1b 23:53:03 kernel: 1 lock held by lsusb/5041: 23:53:03 kernel: #0: (&__lockdep_no_validate__){......}, at: [] usbdev_open+0xd6/0x220 [usbcore] 23:55:03 kernel: [] usb_disable_device+0xa1/0x2a0 [usbcore] 23:55:03 kernel: [] usb_disconnect+0xb7/0x1a0 [usbcore] 23:55:03 kernel: [] hub_thread+0x4dc/0x1450 [usbcore] 23:55:03 kernel: [] ? __schedule+0x282/0x620 23:55:03 kernel: [] ? preempt_schedule+0x41/0x60 23:55:03 kernel: [] ? __init_waitqueue_head+0x60/0x60 23:55:03 kernel: [] ? usb_port_resume+0x510/0x510 [usbcore] 23:55:03 kernel: [] kthread+0xd5/0xe0 23:55:03 kernel: [] ? __init_kthread_worker+0x70/0x70 23:55:03 kernel: [] ret_from_fork+0x7a/0xb0 23:55:03 kernel: [] ? __init_kthread_worker+0x70/0x70 23:55:03 kernel: 3 locks held by khubd/990: 23:55:03 kernel: #0: (&__lockdep_no_validate__){......}, at: [] hub_thread+0xfb/0x1450 [usbcore] 23:55:03 kernel: #1: (&__lockdep_no_validate__){......}, at: [] usb_disconnect+0x61/0x1a0 [usbcore] 23:55:03 kernel: #2: (&__lockdep_no_validate__){......}, at: [] device_release_driver+0x21/0x40 23:55:03 kernel: INFO: task lsusb:5041 blocked for more than 120 seconds. 23:55:03 kernel: Not tainted 3.12.6-gentoo #6 23:55:03 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 23:55:03 kernel: lsusb D 00000000ffffffff 0 5041 4663 0x00000000 23:55:03 kernel: ffff88003ce31af8 0000000000000046 ffff88004dc9e900 ffff88003ce31fd8 23:55:03 kernel: ffff88003ce31fd8 ffff88003ce31fd8 ffff88004dda6900 ffff88004dc9e900 23:55:03 kernel: ffff88003ce31a38 000000000000027e 0000032c358e18b1 ffffffff81a37730 23:55:03 kernel: Call Trace: 23:55:03 kernel: [] ? native_sched_clock+0x26/0x80 23:55:03 kernel: [] ? sched_clock_local.constprop.2+0x15/0x80 23:55:03 kernel: [] ? sched_clock_cpu+0x65/0xc0 23:55:03 kernel: [] ? trace_hardirqs_off+0xd/0x10 23:55:03 kernel: [] ? local_clock+0x43/0x50 23:55:03 kernel: [] ? mutex_lock_nested+0x1fd/0x3c0 23:55:03 kernel: [] schedule+0x23/0x60 23:55:03 kernel: [] schedule_preempt_disabled+0x13/0x20 23:55:03 kernel: [] mutex_lock_nested+0x16b/0x3c0 23:55:03 kernel: [] ? usbdev_open+0xd6/0x220 [usbcore] 23:55:03 kernel: [] ? usbdev_open+0xd6/0x220 [usbcore] 23:55:03 kernel: [] usbdev_open+0xd6/0x220 [usbcore] 23:55:03 kernel: [] chrdev_open+0x96/0x1c0 23:55:03 kernel: [] ? lockref_get+0x1c/0x30 23:55:03 kernel: [] ? cdev_put+0x30/0x30 23:55:03 kernel: [] do_dentry_open.isra.14+0x1f6/0x290 23:55:03 kernel: [] finish_open+0x1d/0x30 23:55:03 kernel: [] do_last.isra.54+0x5a6/0xcc0 23:55:03 kernel: [] ? inode_permission+0x13/0x50 23:55:03 kernel: [] ? link_path_walk+0x68/0x8d0 23:55:03 kernel: [] ? path_init+0x269/0x4b0 23:55:03 kernel: [] path_openat+0xc1/0x660 23:55:03 kernel: [] ? sched_clock_local.constprop.2+0x15/0x80 23:55:03 kernel: [] ? sched_clock_cpu+0x65/0xc0 23:55:03 kernel: [] ? put_lock_stats.isra.21+0xe/0x40 23:55:03 kernel: [] do_filp_open+0x3e/0xa0 23:55:03 kernel: [] ? __alloc_fd+0xd4/0x120 23:55:03 kernel: [] do_sys_open+0x13c/0x230 23:55:03 kernel: [] ? trace_hardirqs_on_caller+0x105/0x1d0 23:55:03 kernel: [] SyS_open+0x1d/0x20 23:55:03 kernel: [] system_call_fastpath+0x16/0x1b 23:55:03 kernel: 1 lock held by lsusb/5041: 23:55:03 kernel: #0: (&__lockdep_no_validate__){......}, at: [] usbdev_open+0xd6/0x220 [usbcore]