]) from [] (v4l2_ioctl+0x68/0x114 [videodev]) [ 1573.049682] [] (v4l2_ioctl+0x68/0x114 [videodev]) from [] (do_vfs_ioctl+0x4e4/0x558) [ 1573.049682] [] (do_vfs_ioctl+0x4e4/0x558) from [] (sys_ioctl+0x4c/0x6c) [ 1573.049713] [] (sys_ioctl+0x4c/0x6c) from [] (ret_fast_syscall+0x0/0x30) [ 1693.048126] INFO: task python:2390 blocked for more than 120 seconds. [ 1693.209716] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1693.209716] python D c055bad8 0 2390 2389 0x00000000 [ 1693.209747] [] (__schedule+0x770/0x850) from [] (__mutex_lock_slowpath+0x134/0x18c) [ 1693.209777] [] (__mutex_lock_slowpath+0x134/0x18c) from [] (mutex_lock+0x20/0x38) [ 1693.209808] [] (mutex_lock+0x20/0x38) from [] (uvc_queue_enable+0x1c/0xa4 [uvcvideo]) [ 1693.209838] [] (uvc_queue_enable+0x1c/0xa4 [uvcvideo]) from [] (uvc_video_enable+0x48/0x8c [uvcvideo]) [ 1693.209869] [] (uvc_video_enable+0x48/0x8c [uvcvideo]) from [] (uvc_v4l2_do_ioctl+0xb98/0xe50 [uvcvideo]) [ 1693.209899] [] (uvc_v4l2_do_ioctl+0xb98/0xe50 [uvcvideo]) from [] (video_usercopy+0x354/0x4b0 [videodev]) [ 1693.209930] [] (video_usercopy+0x354/0x4b0 [videodev]) from [] (v4l2_ioctl+0x68/0x114 [videodev]) [ 1693.209960] [] (v4l2_ioctl+0x68/0x114 [videodev]) from [] (do_vfs_ioctl+0x4e4/0x558) [ 1693.209991] [] (do_vfs_ioctl+0x4e4/0x558) from [] (sys_ioctl+0x4c/0x6c) [ 1693.209991] [] (sys_ioctl+0x4c/0x6c) from [] (ret_fast_syscall+0x0/0x30) [ 1813.204376] INFO: task python:2390 blocked for more than 120 seconds. [ 1813.204376] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1813.204376] python D c055bad8 0 2390 2389 0x00000000 [ 1813.204406] [] (__schedule+0x770/0x850) from [] (__mutex_lock_slowpath+0x134/0x18c) [ 1813.204437] [] (__mutex_lock_slowpath+0x134/0x18c) from [] (mutex_lock+0x20/0x38) [ 1813.204467] [] (mutex_lock+0x20/0x38) from [] (uvc_queue_enable+0x1c/0xa4 [uvcvideo]) [ 1813.204498] [] (uvc_queue_enable+0x1c/0xa4 [uvcvideo]) from [] (uvc_video_enable+0x48/0x8c [uvcvideo]) [ 1813.204528] [] (uvc_video_enable+0x48/0x8c [uvcvideo]) from [] (uvc_v4l2_do_ioctl+0xb98/0xe50 [uvcvideo]) [ 1813.204559] [] (uvc_v4l2_do_ioctl+0xb98/0xe50 [uvcvideo]) from [] (video_usercopy+0x354/0x4b0 [videodev]) [ 1813.204589] [] (video_usercopy+0x354/0x4b0 [videodev]) from [] (v4l2_ioctl+0x68/0x114 [videodev]) [ 1813.204620] [] (v4l2_ioctl+0x68/0x114 [videodev]) from [] (do_vfs_ioctl+0x4e4/0x558) [ 1813.204650] [] (do_vfs_ioctl+0x4e4/0x558) from [] (sys_ioctl+0x4c/0x6c) [ 1813.204650] [] (sys_ioctl+0x4c/0x6c) from [] (ret_fast_syscall+0x0/0x30