Motion watchdog crashing

[trancephorm]

Did you read the guide?

Yes

What is the base version number of Motion being used?

4.6.x

What was the install method?

Installed via package tool

What is base architecture?

x86

What is the distro being used?

Ubuntu

Disto version number

22.04

Camera type(s) being used?

v4l2 USB camera

Describe the issue/problem and steps to reproduce

Motion is reporting this in systemctl status:

 Aug 20 00:30:51 fileserv motion[2200952]: [0:motion] [ERR] [ALL] motion_watchdog: Thread 1 - Watchdog timeout. Trying to do a graceful restart
[348128.484367] usb 1-1: reset high-speed USB device number 2 using xhci_hcd                                                                              Aug 20 00:31:01 fileserv motion[2200952]: [0:motion] [ERR] [ALL] motion_watchdog: Thread 1 - Watchdog timeout did NOT restart, killing it!

Also, in dmesg I get this:

[348380.289681] motion[2142879]: segfault at 7d39ea800fb4 ip 00007d3a9da96943 sp 00007fff6d4d7360 error 6 in libc.so.6[7d3a9da28000+195000] likely on CPU Aug 20 00:31:31 fileserv motion[2200952]: [0:motion] [ERR] [ALL] motion_watchdog: Thread 1 - Watchdog timeout. Trying to do a graceful restart
 6 (core 6, socket 0)  

Anyone has an idea how to solve this?

Motion log output at log_level 8

Aug 20 00:57:24 fileserv systemd[1]: Starting Motion - Security camera monitoring software....
Aug 20 00:57:24 fileserv systemd[1]: Started Motion - Security camera monitoring software..
Aug 20 00:57:24 fileserv motion: [0:motion] [NTC] [ALL] conf_load: Processing thread 0 - config file /etc/motion/motion.conf
Aug 20 00:57:24 fileserv motion: [0:motion] [NTC] [ALL] config_camera: Processing camera config file /usr/etc/motion/logitech.conf
Aug 20 00:57:24 fileserv motion: [0:motion] [NTC] [ALL] motion_startup: Using default log level (NTC) (6)
Aug 20 00:57:24 fileserv motion: [0:motion] [NTC] [ALL] motion_startup: Logging to syslog
Aug 20 00:57:24 fileserv motion: [0:motion] [NTC] [ALL] motion_startup: Motion 4.6.0 Started
Aug 20 00:57:24 fileserv motion: [0:motion] [NTC] [ALL] motion_startup: Using default log type (ALL)
Aug 20 00:57:24 fileserv motion: [0:motion] [NTC] [ALL] motion_startup: Using log type (ALL) log level (NTC)
Aug 20 00:57:24 fileserv motion: [0:motion] [NTC] [STR] webu_start_strm: Starting all camera streams on port 8089
Aug 20 00:57:24 fileserv motion: [0:motion] [NTC] [STR] webu_strm_ntc: Started camera 1 stream on port/camera_id 8089/1
Aug 20 00:57:24 fileserv motion: [0:motion] [NTC] [STR] webu_start_ctrl: Starting webcontrol on port 8088
Aug 20 00:57:24 fileserv motion: [0:motion] [NTC] [STR] webu_start_ctrl: Started webcontrol on port 8088
Aug 20 00:57:24 fileserv motion: [0:motion] [NTC] [ENC] ffmpeg_global_init: ffmpeg libavcodec version 58.134.100 libavformat version 58.76.100
Aug 20 00:57:24 fileserv motion: [0:motion] [NTC] [ALL] translate_init: Language: English
Aug 20 00:57:24 fileserv motion: [0:motion] [NTC] [ALL] motion_start_thread: Camera ID: 1 is from /usr/etc/motion/logitech.conf
Aug 20 00:57:24 fileserv motion: [0:motion] [NTC] [ALL] motion_start_thread: Camera ID: 1 Camera Name: (null) Device: /dev/video1
Aug 20 00:57:24 fileserv motion: [0:motion] [NTC] [ALL] main: Waiting for threads to finish, pid: 2211226
Aug 20 00:57:24 fileserv motion: [1:ml1] [NTC] [ALL] motion_init: Camera 1 started: motion detection Enabled
Aug 20 00:57:24 fileserv motion: [1:ml1] [NTC] [VID] vid_start: Opening V4L2 device
Aug 20 00:57:24 fileserv motion: [1:ml1] [NTC] [VID] v4l2_device_open: Using videodevice /dev/video1 and input -1
Aug 20 00:57:24 fileserv kernel: [359318.039421] usb 1-1: reset high-speed USB device number 2 using xhci_hcd
Aug 20 00:57:24 fileserv motion: [1:ml1] [NTC] [VID] v4l2_device_capability: - VIDEO_CAPTURE
Aug 20 00:57:24 fileserv motion: [1:ml1] [NTC] [VID] v4l2_device_capability: - STREAMING
Aug 20 00:57:24 fileserv motion: [1:ml1] [NTC] [VID] v4l2_input_select: Name = "Camera 1"- CAMERA
Aug 20 00:57:24 fileserv motion: [1:ml1] [NTC] [VID] v4l2_norm_select: Device does not support specifying PAL/NTSC norm
Aug 20 00:57:24 fileserv motion: [1:ml1] [NTC] [VID] v4l2_pixfmt_try: Unable to use YU12 (640x480)
Aug 20 00:57:24 fileserv motion: [1:ml1] [NTC] [VID] v4l2_pixfmt_select: Configuration palette index 17 (YU12) for 640x480 doesn't work.
Aug 20 00:57:24 fileserv motion: [1:ml1] [NTC] [VID] v4l2_pixfmt_select: Supported palettes:
Aug 20 00:57:24 fileserv motion: [1:ml1] [NTC] [VID] v4l2_pixfmt_select: (0) YUYV (YUYV 4:2:2)
Aug 20 00:57:24 fileserv motion: [1:ml1] [NTC] [VID] v4l2_pixfmt_select: (1) MJPG (Motion-JPEG)
Aug 20 00:57:24 fileserv motion: [1:ml1] [NTC] [VID] v4l2_pixfmt_try: Testing palette MJPG (640x480)
Aug 20 00:57:24 fileserv motion: [1:ml1] [NTC] [VID] v4l2_pixfmt_set: Using palette MJPG (640x480)
Aug 20 00:57:24 fileserv motion: [1:ml1] [NTC] [VID] v4l2_pixfmt_select: Selected palette MJPG
Aug 20 00:57:24 fileserv motion: [1:ml1] [NTC] [ALL] image_ring_resize: Resizing pre_capture buffer to 1 items
Aug 20 00:57:26 fileserv motion: [1:ml1] [NTC] [ALL] image_ring_resize: Resizing pre_capture buffer to 5 items

[Mr-Dave]

I've moved this over to a discussion. The whole watchdog thing is hopeless. The watchdog means that the device has somehow locked up the entire thread process. (Think of it like someone yanking out the USB cord in the middle of the process.).

The "correct" solution would be to just terminate the application entirely when the driver locks up but the historical process for Motion was to do this kill the thread watchdog thing which may or may not stop the process but will for sure leak memory which if done enough times will invoke the kernel to take action and kill Motion.

You can set your systemctl to restart upon termination. You could try to use the netcam_url option for opening the device (see the guide) or try a different webcam is my only suggestion.

[tosiara]

Hmm, I also get that segfault during watchdog restart:

elo 27 09:34:37 intel motion[926]: [0:motion] [ERR] [ALL] motion_watchdog: Watchdog timeout. Trying restart
elo 27 09:34:47 intel motion[926]: [0:motion] [ERR] [ALL] motion_watchdog: Watchdog did not restart. Calling pthread_cancel.
elo 27 09:34:58 intel motion[926]: [0:motion] [ERR] [ALL] motion_watchdog: pthread_cancel failed.  Killing threads!!!
elo 27 09:34:58 intel motion[926]: [0:motion] [ERR] [ALL] motion_watchdog: Memory leaks will occur!!!
elo 27 09:34:58 intel motion[926]: [0:motion] [ERR] [ALL] motion_watchdog: Fix the cause of camera/system locking and restart Motion.
elo 27 09:34:58 intel kernel: motion[926]: segfault at 28 ip 00007fa5fa36d538 sp 00007ffebcf92100 error 4 in libavcodec.so.58.54.100[7fa5f9cb2000+9d6000]

Intel x86_64 Ubuntu Focal