[  240.130590] INFO: task gst-plugin-scan:1693 blocked for more than 120 seconds.
[  240.130591]       Not tainted 4.2.0-rc5+ #69
[  240.130592] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.130592] gst-plugin-scan D ffff8800d5b27a28     0  1693      1 0x00000000
[  240.130594]  ffff8800d5b27a28 0000000000000000 ffff8803ef36de00 ffffffff815c63c3
[  240.130596]  ffff8800d5b27a90 ffff8804061352c0 000000001a5ff73f ffff8800d5b27a18
[  240.130597]  ffff8800d5b28000 0000000000000000 ffff8800d5b27a90 ffff8804061352c0
[  240.130599] Call Trace:
[  240.130600]  [<ffffffff815c63c3>] ? _raw_spin_unlock_irq+0x28/0x34
[  240.130601]  [<ffffffff815c1d92>] schedule+0x79/0x8f
[  240.130603]  [<ffffffff813b9c98>] rpm_resume+0x1b6/0x412
[  240.130604]  [<ffffffff810d8828>] ? abort_exclusive_wait+0x94/0x94
[  240.130605]  [<ffffffff813b9de3>] rpm_resume+0x301/0x412
[  240.130607]  [<ffffffff813b9f5a>] __pm_runtime_resume+0x66/0x82
[  240.130608]  [<ffffffff815c38f3>] ? __mutex_unlock_slowpath+0x110/0x11b
[  240.130609]  [<ffffffff81412f4d>] usb_autopm_get_interface+0x1e/0x48
[  240.130611]  [<ffffffffa039f1f7>] uvc_v4l2_open+0x3f/0x12b [uvcvideo]
[  240.130614]  [<ffffffffa036953d>] v4l2_open+0x88/0xcb [videodev]
[  240.130616]  [<ffffffff81178766>] chrdev_open+0x13b/0x175
[  240.130617]  [<ffffffff8117862b>] ? cdev_put+0x20/0x20
[  240.130618]  [<ffffffff81172dd2>] do_dentry_open.isra.1+0x1d2/0x2c9
[  240.130620]  [<ffffffff8117cf85>] ? __inode_permission+0x84/0x95
[  240.130621]  [<ffffffff81173a97>] vfs_open+0x50/0x54
[  240.130622]  [<ffffffff81181485>] path_openat+0xa90/0xd0f
[  240.130623]  [<ffffffff810e0800>] ? __lock_acquire+0x673/0xabf
[  240.130624]  [<ffffffff81182543>] do_filp_open+0x48/0xac
[  240.130626]  [<ffffffff815c6313>] ? _raw_spin_unlock+0x23/0x2e
[  240.130627]  [<ffffffff8118f45c>] ? __alloc_fd+0x144/0x156
[  240.130629]  [<ffffffff81173ddb>] do_sys_open+0x154/0x1f7
[  240.130630]  [<ffffffff81173e97>] SyS_open+0x19/0x1b
[  240.130631]  [<ffffffff815c6b57>] entry_SYSCALL_64_fastpath+0x12/0x6f
[  240.130632] no locks held by gst-plugin-scan/1693.