RaspberryCam crashes after printing start

Camera model
RasperyPi Cam

What is the problem?
Hi, the camera itself works great, but when I start printing, the camera seems to crash.
When I move the Z-Axis, it still works, but as soon as i start moving the X or Y-Axis in the control-tab, the picture freezes and i cannot bring it back to work. Only possibility is to restart the system. It all worked until I updated to 1.4.1 and the day after to 1.4.2.
does anybody have a tipp, what I should look for ?

What did you already try to solve it?
tried to check the logs, but I have no clue what to look for.

edit 15:08 07.08.2020: Looked through other threads: tried with Safemode, same result.
restarting the service worked only once, when x-y-Movement is triggered it crashes again and then the restart of the service does not work.
I checked the configuration via ssh, everything fine.
Accessing the Camera with direct URL, does not work.

Logs (/var/log/webcamd.log, syslog, dmesg, ... no logs, no support)
the only information I could find in logs is this after moving the x-Axis:

messages:
Aug 7 11:53:27 octopi kernel: [ 12.793265] Bluetooth: BNEP socket layer initialized
Aug 7 12:03:53 octopi MJPG-streamer [419]: select() timeout
Aug 7 12:03:53 octopi MJPG-streamer [419]: cleaning up resources allocated by input thread

syslog:
Aug 7 12:03:53 octopi webcamd[324]: i: select() timeout
Aug 7 12:03:53 octopi webcamd[324]: i: cleaning up resources allocated by input thread
Aug 7 12:03:53 octopi MJPG-streamer [419]: select() timeout
Aug 7 12:03:53 octopi MJPG-streamer [419]: cleaning up resources allocated by input thread

webcamd.log is not /var/log to find.

Additional information about your setup (OctoPrint version, OctoPi version, ...)
OctoPrint Version 1.4.2 OctoPi 0.17, PiCam attached with ribbon cable, browser: Chrome, IE, FF, Safari

I startet the Webcam daemon manually and startet a new print, and there are some details from syslog, what happened when the X-Y-Movement started:

Aug 7 21:23:08 octopi webcamd[3580]: i: select() timeout
Aug 7 21:23:08 octopi webcamd[3580]: i: cleaning up resources allocated by input thread
Aug 7 21:23:08 octopi MJPG-streamer [3593]: select() timeout
Aug 7 21:23:08 octopi MJPG-streamer [3593]: cleaning up resources allocated by input thread
Aug 7 21:23:11 octopi kernel: [15037.258626] bcm2835_mmal_vchiq: timed out waiting for sync completion
Aug 7 21:23:11 octopi kernel: [15037.258649] bcm2835-v4l2: port_disable failed, error -62
Aug 7 21:23:12 octopi kernel: [15038.298698] bcm2835-v4l2: stop_streaming: Timeout waiting for buffers to be returned - 4 outstanding
Aug 7 21:23:15 octopi kernel: [15041.338650] bcm2835_mmal_vchiq: timed out waiting for sync completion
Aug 7 21:23:15 octopi kernel: [15041.338682] bcm2835-v4l2: Failed disabling camera, ret -62
Aug 7 21:23:15 octopi kernel: [15041.338692] bcm2835-v4l2: Failed to disable camera
Aug 7 21:23:15 octopi kernel: [15041.338702] ------------[ cut here ]------------
Aug 7 21:23:15 octopi kernel: [15041.338757] WARNING: CPU: 0 PID: 3595 at drivers/media/common/videobuf2/videobuf2-core.c:1688 __vb2_queue_cancel+0x158/0x1c8 [videobuf2_common]
Aug 7 21:23:15 octopi kernel: [15041.338773] Modules linked in: nft_counter nft_chain_route_ipv4 xt_DSCP xt_tcpudp nft_compat nf_tables nfnetlink bnep hci_uart btbcm serdev bluetooth ecdh_generic 8021q garp stp llc ch341 usbserial brcmfmac brcmutil vc4 sha256_generic drm_kms_helper v3d gpu_sched cfg80211 snd_soc_core snd_compress snd_pcm_dmaengine syscopyarea sysfillrect sysimgblt fb_sys_fops drm rfkill drm_panel_orientation_quirks raspberrypi_hwmon bcm2835_v4l2(C) hwmon snd_bcm2835(C) bcm2835_codec(C) v4l2_common v4l2_mem2mem bcm2835_mmal_vchiq(C) snd_pcm videobuf2_vmalloc videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 snd_timer videobuf2_common snd videodev vc_sm_cma(C) media rpivid_mem uio_pdrv_genirq fixed uio ip_tables x_tables ipv6
Aug 7 21:23:15 octopi kernel: [15041.339363] CPU: 0 PID: 3595 Comm: mjpg_streamer Tainted: G C 4.19.75-v7l+ #1270
Aug 7 21:23:15 octopi kernel: [15041.339371] Hardware name: BCM2835
Aug 7 21:23:15 octopi kernel: [15041.339405] [] (unwind_backtrace) from [] (show_stack+0x20/0x24)
Aug 7 21:23:15 octopi kernel: [15041.339424] [] (show_stack) from [] (dump_stack+0xd4/0x118)
Aug 7 21:23:15 octopi kernel: [15041.339442] [] (dump_stack) from [] (__warn+0x104/0x11c)
Aug 7 21:23:15 octopi kernel: [15041.339458] [] (__warn) from [] (warn_slowpath_null+0x50/0x58)
Aug 7 21:23:15 octopi kernel: [15041.339491] [] (warn_slowpath_null) from [] (__vb2_queue_cancel+0x158/0x1c8 [videobuf2_common])
Aug 7 21:23:15 octopi kernel: [15041.339547] [] (__vb2_queue_cancel [videobuf2_common]) from [] (vb2_core_streamoff+0x44/0xb4 [videobuf2_common])
Aug 7 21:23:15 octopi kernel: [15041.339589] [] (vb2_core_streamoff [videobuf2_common]) from [] (vb2_streamoff+0x40/0x60 [videobuf2_v4l2])
Aug 7 21:23:15 octopi kernel: [15041.339625] [] (vb2_streamoff [videobuf2_v4l2]) from [] (vb2_ioctl_streamoff+0x50/0x684 [videobuf2_v4l2])
Aug 7 21:23:15 octopi kernel: [15041.339710] [] (vb2_ioctl_streamoff [videobuf2_v4l2]) from [] (v4l_streamoff+0x28/0x2c [videodev])
Aug 7 21:23:15 octopi kernel: [15041.339845] [] (v4l_streamoff [videodev]) from [] (__video_do_ioctl+0x268/0x528 [videodev])
Aug 7 21:23:15 octopi kernel: [15041.339972] [] (__video_do_ioctl [videodev]) from [] (video_usercopy+0x218/0x600 [videodev])
Aug 7 21:23:15 octopi kernel: [15041.340097] [] (video_usercopy [videodev]) from [] (video_ioctl2+0x20/0x24 [videodev])
Aug 7 21:23:15 octopi kernel: [15041.340222] [] (video_ioctl2 [videodev]) from [] (v4l2_ioctl+0x4c/0x60 [videodev])
Aug 7 21:23:15 octopi kernel: [15041.340296] [] (v4l2_ioctl [videodev]) from [] (do_vfs_ioctl+0xbc/0x804)
Aug 7 21:23:15 octopi kernel: [15041.340317] [] (do_vfs_ioctl) from [] (ksys_ioctl+0x44/0x6c)
Aug 7 21:23:15 octopi kernel: [15041.340335] [] (ksys_ioctl) from [] (sys_ioctl+0x18/0x1c)
Aug 7 21:23:15 octopi kernel: [15041.340352] [] (sys_ioctl) from [] (ret_fast_syscall+0x0/0x28)
Aug 7 21:23:15 octopi kernel: [15041.340361] Exception stack(0xda8affa8 to 0xda8afff0)
Aug 7 21:23:15 octopi kernel: [15041.340373] ffa0: 86c1fa00 00000000 00000004 40045613 b6918f48 00000001
Aug 7 21:23:15 octopi kernel: [15041.340386] ffc0: 86c1fa00 00000000 40045613 00000036 00000001 b6da3004 00000004 b691b930
Aug 7 21:23:15 octopi kernel: [15041.340395] ffe0: b6918f48 b6918f38 b6d8c958 b6e95af0
Aug 7 21:23:15 octopi kernel: [15041.340405] ---[ end trace 30043498885cf93c ]---
Aug 7 21:23:15 octopi kernel: [15041.340419] videobuf2_common: driver bug: stop_streaming operation is leaving buf feff8581 in active state
Aug 7 21:23:15 octopi kernel: [15041.340432] videobuf2_common: driver bug: stop_streaming operation is leaving buf e8a70342 in active state
Aug 7 21:23:15 octopi kernel: [15041.340445] videobuf2_common: driver bug: stop_streaming operation is leaving buf 68628c4e in active state
Aug 7 21:23:15 octopi kernel: [15041.340457] videobuf2_common: driver bug: stop_streaming operation is leaving buf e738c2fe in active state
Aug 7 21:25:17 octopi systemd[1]: Stopping the OctoPi webcam daemon with the user specified config...
Aug 7 21:25:17 octopi systemd[1]: webcamd.service: Main process exited, code=killed, status=15/TERM
Aug 7 21:25:17 octopi systemd[1]: webcamd.service: Succeeded.
Aug 7 21:25:17 octopi systemd[1]: Stopped the OctoPi webcam daemon with the user specified config.
Aug 7 21:25:17 octopi systemd[1]: Starting the OctoPi webcam daemon with the user specified config...
Aug 7 21:25:17 octopi webcamd[3651]: Starting up webcamDaemon...
Aug 7 21:25:17 octopi webcamd[3651]: --- Configuration: ----------------------------
Aug 7 21:25:17 octopi webcamd[3651]: cfg_file: /boot/octopi.txt
Aug 7 21:25:17 octopi webcamd[3651]: camera: auto
Aug 7 21:25:17 octopi webcamd[3651]: usb options: -r 640x480 -f 10
Aug 7 21:25:17 octopi webcamd[3651]: raspi options: -fps 10
Aug 7 21:25:17 octopi webcamd[3651]: http options: -w ./www-octopi -n
Aug 7 21:25:17 octopi webcamd[3651]: Explicitly USB device:
Aug 7 21:25:17 octopi webcamd[3651]: -----------------------------------------------
Aug 7 21:26:29 octopi kernel: [15235.180473] INFO: task kworker/3:1:40 blocked for more than 120 seconds.
Aug 7 21:26:29 octopi kernel: [15235.180487] Tainted: G WC 4.19.75-v7l+ #1270
Aug 7 21:26:29 octopi kernel: [15235.180497] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 7 21:26:29 octopi kernel: [15235.180508] kworker/3:1 D 0 40 2 0x00000000
Aug 7 21:26:29 octopi kernel: [15235.180551] Workqueue: events dbs_work_handler
Aug 7 21:26:29 octopi kernel: [15235.180589] [] (__schedule) from [] (schedule+0x50/0xa8)
Aug 7 21:26:29 octopi kernel: [15235.180609] [] (schedule) from [] (schedule_preempt_disabled+0x18/0x1c)
Aug 7 21:26:29 octopi kernel: [15235.180631] [] (schedule_preempt_disabled) from [] (__mutex_lock.constprop.5+0x1a8/0x590)
Aug 7 21:26:29 octopi kernel: [15235.180650] [] (__mutex_lock.constprop.5) from [] (__mutex_lock_slowpath+0x1c/0x20)
Aug 7 21:26:29 octopi kernel: [15235.180669] [] (__mutex_lock_slowpath) from [] (mutex_lock+0x5c/0x60)
Aug 7 21:26:29 octopi kernel: [15235.180690] [] (mutex_lock) from [] (rpi_firmware_transaction+0x54/0xd0)
Aug 7 21:26:29 octopi kernel: [15235.180709] [] (rpi_firmware_transaction) from [] (rpi_firmware_property_list+0x140/0x2b0)
Aug 7 21:26:29 octopi kernel: [15235.180726] [] (rpi_firmware_property_list) from [] (rpi_firmware_property+0x7c/0xfc)
Aug 7 21:26:29 octopi kernel: [15235.180745] [] (rpi_firmware_property) from [] (bcm2835_cpufreq_clock_property.constprop.1+0x58/0x80)
Aug 7 21:26:29 octopi kernel: [15235.180766] [] (bcm2835_cpufreq_clock_property.constprop.1) from [] (bcm2835_cpufreq_driver_target_index+0x5c/0xe4)
Aug 7 21:26:29 octopi kernel: [15235.180785] [] (bcm2835_cpufreq_driver_target_index) from [] (__cpufreq_driver_target+0x2d8/0x5a8)
Aug 7 21:26:29 octopi kernel: [15235.180803] [] (__cpufreq_driver_target) from [] (od_dbs_update+0xa8/0x174)
Aug 7 21:26:29 octopi kernel: [15235.180821] [] (od_dbs_update) from [] (dbs_work_handler+0x3c/0x68)
Aug 7 21:26:29 octopi kernel: [15235.180843] [] (dbs_work_handler) from [] (process_one_work+0x170/0x458)
Aug 7 21:26:29 octopi kernel: [15235.180861] [] (process_one_work) from [] (worker_thread+0x5c/0x5a4)
Aug 7 21:26:29 octopi kernel: [15235.180877] [] (worker_thread) from [] (kthread+0x138/0x168)
Aug 7 21:26:29 octopi kernel: [15235.180894] [] (kthread) from [] (ret_from_fork+0x14/0x28)
Aug 7 21:26:29 octopi kernel: [15235.180906] Exception stack(0xefaabfb0 to 0xefaabff8)
Aug 7 21:26:29 octopi kernel: [15235.180918] bfa0: 00000000 00000000 00000000 00000000
Aug 7 21:26:29 octopi kernel: [15235.180932] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Aug 7 21:26:29 octopi kernel: [15235.180944] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000
Aug 7 21:26:29 octopi kernel: [15235.180990] INFO: task kworker/1:1:3636 blocked for more than 120 seconds.
Aug 7 21:26:29 octopi kernel: [15235.181001] Tainted: G WC 4.19.75-v7l+ #1270
Aug 7 21:26:29 octopi kernel: [15235.181010] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 7 21:26:29 octopi kernel: [15235.181019] kworker/1:1 D 0 3636 2 0x00000000
Aug 7 21:26:29 octopi kernel: [15235.181055] Workqueue: events get_values_poll [raspberrypi_hwmon]
Aug 7 21:26:29 octopi kernel: [15235.181084] [] (__schedule) from [] (schedule+0x50/0xa8)
Aug 7 21:26:29 octopi kernel: [15235.181103] [] (schedule) from [] (schedule_timeout+0x200/0x428)
Aug 7 21:26:29 octopi kernel: [15235.181122] [] (schedule_timeout) from [] (wait_for_common+0xd4/0x1b0)
Aug 7 21:26:29 octopi kernel: [15235.181141] [] (wait_for_common) from [] (wait_for_completion+0x20/0x24)
Aug 7 21:26:29 octopi kernel: [15235.181159] [] (wait_for_completion) from [] (rpi_firmware_transaction+0x78/0xd0)
Aug 7 21:26:29 octopi kernel: [15235.181176] [] (rpi_firmware_transaction) from [] (rpi_firmware_property_list+0x140/0x2b0)
Aug 7 21:26:29 octopi kernel: [15235.181193] [] (rpi_firmware_property_list) from [] (rpi_firmware_property+0x7c/0xfc)
Aug 7 21:26:29 octopi kernel: [15235.181214] [] (rpi_firmware_property) from [] (get_values_poll+0x4c/0x15c [raspberrypi_hwmon])
Aug 7 21:26:29 octopi kernel: [15235.181249] [] (get_values_poll [raspberrypi_hwmon]) from [] (process_one_work+0x170/0x458)
Aug 7 21:26:29 octopi kernel: [15235.181265] [] (process_one_work) from [] (worker_thread+0x5c/0x5a4)
Aug 7 21:26:29 octopi kernel: [15235.181280] [] (worker_thread) from [] (kthread+0x138/0x168)
Aug 7 21:26:29 octopi kernel: [15235.181295] [] (kthread) from [] (ret_from_fork+0x14/0x28)
Aug 7 21:26:29 octopi kernel: [15235.181306] Exception stack(0xef947fb0 to 0xef947ff8)
Aug 7 21:26:29 octopi kernel: [15235.181317] 7fa0: 00000000 00000000 00000000 00000000
Aug 7 21:26:29 octopi kernel: [15235.181329] 7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Aug 7 21:26:29 octopi kernel: [15235.181341] 7fe0: 00000000 00000000 00000000 00000000 00000013 00000000
Aug 7 21:26:47 octopi systemd[1]: webcamd.service: Start operation timed out. Terminating.
Aug 7 21:28:17 octopi systemd[1]: webcamd.service: State 'stop-sigterm' timed out. Killing.
Aug 7 21:28:17 octopi systemd[1]: webcamd.service: Killing process 3651 (webcamd) with signal SIGKILL.
Aug 7 21:28:17 octopi systemd[1]: webcamd.service: Killing process 3655 (vcgencmd) with signal SIGKILL.
Aug 7 21:28:17 octopi systemd[1]: webcamd.service: Control process exited, code=killed, status=9/KILL
Aug 7 21:28:17 octopi systemd[1]: webcamd.service: Failed with result 'timeout'.
Aug 7 21:28:17 octopi systemd[1]: Failed to start the OctoPi webcam daemon with the user specified config.
Aug 7 21:28:17 octopi systemd[1]: webcamd.service: Service RestartSec=100ms expired, scheduling restart.
Aug 7 21:28:17 octopi systemd[1]: webcamd.service: Scheduled restart job, restart counter is at 1.
Aug 7 21:28:17 octopi systemd[1]: Stopped the OctoPi webcam daemon with the user specified config.
Aug 7 21:28:18 octopi systemd[1]: Starting the OctoPi webcam daemon with the user specified config...
Aug 7 21:28:18 octopi webcamd[3680]: Starting up webcamDaemon...
Aug 7 21:28:18 octopi webcamd[3680]: --- Configuration: ----------------------------
Aug 7 21:28:18 octopi webcamd[3680]: cfg_file: /boot/octopi.txt
Aug 7 21:28:18 octopi webcamd[3680]: camera: auto
Aug 7 21:28:18 octopi webcamd[3680]: usb options: -r 640x480 -f 10
Aug 7 21:28:18 octopi webcamd[3680]: raspi options: -fps 10
Aug 7 21:28:18 octopi webcamd[3680]: http options: -w ./www-octopi -n
Aug 7 21:28:18 octopi webcamd[3680]: Explicitly USB device:
Aug 7 21:28:18 octopi webcamd[3680]: -----------------------------------------------
Aug 7 21:28:32 octopi kernel: [15358.061752] INFO: task kworker/3:1:40 blocked for more than 120 seconds.
Aug 7 21:28:32 octopi kernel: [15358.061765] Tainted: G WC 4.19.75-v7l+ #1270
Aug 7 21:28:32 octopi kernel: [15358.061775] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 7 21:28:32 octopi kernel: [15358.061786] kworker/3:1 D 0 40 2 0x00000000
Aug 7 21:28:32 octopi kernel: [15358.061829] Workqueue: events dbs_work_handler
Aug 7 21:28:32 octopi kernel: [15358.061868] [] (__schedule) from [] (schedule+0x50/0xa8)
Aug 7 21:28:32 octopi kernel: [15358.061888] [] (schedule) from [] (schedule_preempt_disabled+0x18/0x1c)
Aug 7 21:28:32 octopi kernel: [15358.061910] [] (schedule_preempt_disabled) from [] (__mutex_lock.constprop.5+0x1a8/0x590)
Aug 7 21:28:32 octopi kernel: [15358.061930] [] (__mutex_lock.constprop.5) from [] (__mutex_lock_slowpath+0x1c/0x20)
Aug 7 21:28:32 octopi kernel: [15358.061949] [] (__mutex_lock_slowpath) from [] (mutex_lock+0x5c/0x60)
Aug 7 21:28:32 octopi kernel: [15358.061969] [] (mutex_lock) from [] (rpi_firmware_transaction+0x54/0xd0)
Aug 7 21:28:32 octopi kernel: [15358.061988] [] (rpi_firmware_transaction) from [] (rpi_firmware_property_list+0x140/0x2b0)
Aug 7 21:28:32 octopi kernel: [15358.062004] [] (rpi_firmware_property_list) from [] (rpi_firmware_property+0x7c/0xfc)
Aug 7 21:28:32 octopi kernel: [15358.062024] [] (rpi_firmware_property) from [] (bcm2835_cpufreq_clock_property.constprop.1+0x58/0x80)
Aug 7 21:28:32 octopi kernel: [15358.062046] [] (bcm2835_cpufreq_clock_property.constprop.1) from [] (bcm2835_cpufreq_driver_target_index+0x5c/0xe4)
Aug 7 21:28:32 octopi kernel: [15358.062065] [] (bcm2835_cpufreq_driver_target_index) from [] (__cpufreq_driver_target+0x2d8/0x5a8)
Aug 7 21:28:32 octopi kernel: [15358.062083] [] (__cpufreq_driver_target) from [] (od_dbs_update+0xa8/0x174)
Aug 7 21:28:32 octopi kernel: [15358.062102] [] (od_dbs_update) from [] (dbs_work_handler+0x3c/0x68)
Aug 7 21:28:32 octopi kernel: [15358.062122] [] (dbs_work_handler) from [] (process_one_work+0x170/0x458)
Aug 7 21:28:32 octopi kernel: [15358.062141] [] (process_one_work) from [] (worker_thread+0x5c/0x5a4)
Aug 7 21:28:32 octopi kernel: [15358.062157] [] (worker_thread) from [] (kthread+0x138/0x168)
Aug 7 21:28:32 octopi kernel: [15358.062173] [] (kthread) from [] (ret_from_fork+0x14/0x28)
Aug 7 21:28:32 octopi kernel: [15358.062184] Exception stack(0xefaabfb0 to 0xefaabff8)
Aug 7 21:28:32 octopi kernel: [15358.062197] bfa0: 00000000 00000000 00000000 00000000
Aug 7 21:28:32 octopi kernel: [15358.062210] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Aug 7 21:28:32 octopi kernel: [15358.062222] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000
Aug 7 21:28:32 octopi kernel: [15358.062269] INFO: task kworker/1:1:3636 blocked for more than 120 seconds.
Aug 7 21:28:32 octopi kernel: [15358.062279] Tainted: G WC 4.19.75-v7l+ #1270
Aug 7 21:28:32 octopi kernel: [15358.062288] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 7 21:28:32 octopi kernel: [15358.062297] kworker/1:1 D 0 3636 2 0x00000000
Aug 7 21:28:32 octopi kernel: [15358.062334] Workqueue: events get_values_poll [raspberrypi_hwmon]
Aug 7 21:28:32 octopi kernel: [15358.062363] [] (__schedule) from [] (schedule+0x50/0xa8)
Aug 7 21:28:32 octopi kernel: [15358.062382] [] (schedule) from [] (schedule_timeout+0x200/0x428)
Aug 7 21:28:32 octopi kernel: [15358.062401] [] (schedule_timeout) from [] (wait_for_common+0xd4/0x1b0)
Aug 7 21:28:32 octopi kernel: [15358.062420] [] (wait_for_common) from [] (wait_for_completion+0x20/0x24)
Aug 7 21:28:32 octopi kernel: [15358.062439] [] (wait_for_completion) from [] (rpi_firmware_transaction+0x78/0xd0)
Aug 7 21:28:32 octopi kernel: [15358.062456] [] (rpi_firmware_transaction) from [] (rpi_firmware_property_list+0x140/0x2b0)
Aug 7 21:28:32 octopi kernel: [15358.062472] [] (rpi_firmware_property_list) from [] (rpi_firmware_property+0x7c/0xfc)
Aug 7 21:28:32 octopi kernel: [15358.062493] [] (rpi_firmware_property) from [] (get_values_poll+0x4c/0x15c [raspberrypi_hwmon])
Aug 7 21:28:32 octopi kernel: [15358.062516] [] (get_values_poll [raspberrypi_hwmon]) from [] (process_one_work+0x170/0x458)
Aug 7 21:28:32 octopi kernel: [15358.062533] [] (process_one_work) from [] (worker_thread+0x5c/0x5a4)
Aug 7 21:28:32 octopi kernel: [15358.062548] [] (worker_thread) from [] (kthread+0x138/0x168)
Aug 7 21:28:32 octopi kernel: [15358.062563] [] (kthread) from [] (ret_from_fork+0x14/0x28)
Aug 7 21:28:32 octopi kernel: [15358.062573] Exception stack(0xef947fb0 to 0xef947ff8)
Aug 7 21:28:32 octopi kernel: [15358.062585] 7fa0: 00000000 00000000 00000000 00000000
Aug 7 21:28:32 octopi kernel: [15358.062598] 7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Aug 7 21:28:32 octopi kernel: [15358.062610] 7fe0: 00000000 00000000 00000000 00000000 00000013 00000000
Aug 7 21:29:48 octopi systemd[1]: webcamd.service: Start operation timed out. Terminating.
Aug 7 21:30:34 octopi kernel: [15480.942838] INFO: task kworker/3:1:40 blocked for more than 120 seconds.
Aug 7 21:30:34 octopi kernel: [15480.942852] Tainted: G WC 4.19.75-v7l+ #1270
Aug 7 21:30:34 octopi kernel: [15480.942862] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 7 21:30:34 octopi kernel: [15480.942873] kworker/3:1 D 0 40 2 0x00000000
Aug 7 21:30:34 octopi kernel: [15480.942916] Workqueue: events dbs_work_handler
Aug 7 21:30:34 octopi kernel: [15480.942954] [] (__schedule) from [] (schedule+0x50/0xa8)
Aug 7 21:30:34 octopi kernel: [15480.942974] [] (schedule) from [] (schedule_preempt_disabled+0x18/0x1c)
Aug 7 21:30:34 octopi kernel: [15480.942995] [] (schedule_preempt_disabled) from [] (__mutex_lock.constprop.5+0x1a8/0x590)
Aug 7 21:30:34 octopi kernel: [15480.943016] [] (__mutex_lock.constprop.5) from [] (__mutex_lock_slowpath+0x1c/0x20)
Aug 7 21:30:34 octopi kernel: [15480.943035] [] (__mutex_lock_slowpath) from [] (mutex_lock+0x5c/0x60)
Aug 7 21:30:34 octopi kernel: [15480.943056] [] (mutex_lock) from [] (rpi_firmware_transaction+0x54/0xd0)
Aug 7 21:30:34 octopi kernel: [15480.943075] [] (rpi_firmware_transaction) from [] (rpi_firmware_property_list+0x140/0x2b0)
Aug 7 21:30:34 octopi kernel: [15480.943092] [] (rpi_firmware_property_list) from [] (rpi_firmware_property+0x7c/0xfc)
Aug 7 21:30:34 octopi kernel: [15480.943111] [] (rpi_firmware_property) from [] (bcm2835_cpufreq_clock_property.constprop.1+0x58/0x80)
Aug 7 21:30:34 octopi kernel: [15480.943132] [] (bcm2835_cpufreq_clock_property.constprop.1) from [] (bcm2835_cpufreq_driver_target_index+0x5c/0xe4)
Aug 7 21:30:34 octopi kernel: [15480.943151] [] (bcm2835_cpufreq_driver_target_index) from [] (__cpufreq_driver_target+0x2d8/0x5a8)
Aug 7 21:30:34 octopi kernel: [15480.943169] [] (__cpufreq_driver_target) from [] (od_dbs_update+0xa8/0x174)
Aug 7 21:30:34 octopi kernel: [15480.943188] [] (od_dbs_update) from [] (dbs_work_handler+0x3c/0x68)
Aug 7 21:30:34 octopi kernel: [15480.943209] [] (dbs_work_handler) from [] (process_one_work+0x170/0x458)
Aug 7 21:30:34 octopi kernel: [15480.943227] [] (process_one_work) from [] (worker_thread+0x5c/0x5a4)
Aug 7 21:30:34 octopi kernel: [15480.943243] [] (worker_thread) from [] (kthread+0x138/0x168)
Aug 7 21:30:34 octopi kernel: [15480.943259] [] (kthread) from [] (ret_from_fork+0x14/0x28)
Aug 7 21:30:34 octopi kernel: [15480.943270] Exception stack(0xefaabfb0 to 0xefaabff8)
Aug 7 21:30:34 octopi kernel: [15480.943283] bfa0: 00000000 00000000 00000000 00000000
Aug 7 21:30:34 octopi kernel: [15480.943296] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Aug 7 21:30:34 octopi kernel: [15480.943308] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000
Aug 7 21:30:34 octopi kernel: [15480.943354] INFO: task kworker/1:1:3636 blocked for more than 120 seconds.
Aug 7 21:30:34 octopi kernel: [15480.943365] Tainted: G WC 4.19.75-v7l+ #1270
Aug 7 21:30:34 octopi kernel: [15480.943374] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 7 21:30:34 octopi kernel: [15480.943383] kworker/1:1 D 0 3636 2 0x00000000
Aug 7 21:30:34 octopi kernel: [15480.943419] Workqueue: events get_values_poll [raspberrypi_hwmon]
Aug 7 21:30:34 octopi kernel: [15480.943448] [] (__schedule) from [] (schedule+0x50/0xa8)
Aug 7 21:30:34 octopi kernel: [15480.943466] [] (schedule) from [] (schedule_timeout+0x200/0x428)
Aug 7 21:30:34 octopi kernel: [15480.943485] [] (schedule_timeout) from [] (wait_for_common+0xd4/0x1b0)
Aug 7 21:30:34 octopi kernel: [15480.943505] [] (wait_for_common) from [] (wait_for_completion+0x20/0x24)
Aug 7 21:30:34 octopi kernel: [15480.943523] [] (wait_for_completion) from [] (rpi_firmware_transaction+0x78/0xd0)
Aug 7 21:30:34 octopi kernel: [15480.943540] [] (rpi_firmware_transaction) from [] (rpi_firmware_property_list+0x140/0x2b0)
Aug 7 21:30:34 octopi kernel: [15480.943556] [] (rpi_firmware_property_list) from [] (rpi_firmware_property+0x7c/0xfc)
Aug 7 21:30:34 octopi kernel: [15480.943576] [] (rpi_firmware_property) from [] (get_values_poll+0x4c/0x15c [raspberrypi_hwmon])
Aug 7 21:30:34 octopi kernel: [15480.943599] [] (get_values_poll [raspberrypi_hwmon]) from [] (process_one_work+0x170/0x458)
Aug 7 21:30:34 octopi kernel: [15480.943615] [] (process_one_work) from [] (worker_thread+0x5c/0x5a4)
Aug 7 21:30:34 octopi kernel: [15480.943630] [] (worker_thread) from [] (kthread+0x138/0x168)
Aug 7 21:30:34 octopi kernel: [15480.943645] [] (kthread) from [] (ret_from_fork+0x14/0x28)
Aug 7 21:30:34 octopi kernel: [15480.943656] Exception stack(0xef947fb0 to 0xef947ff8)
Aug 7 21:30:34 octopi kernel: [15480.943668] 7fa0: 00000000 00000000 00000000 00000000
Aug 7 21:30:34 octopi kernel: [15480.943681] 7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Aug 7 21:30:34 octopi kernel: [15480.943693] 7fe0: 00000000 00000000 00000000 00000000 00000013 00000000
Aug 7 21:30:34 octopi kernel: [15480.943706] INFO: task vcgencmd:3655 blocked for more than 120 seconds.
Aug 7 21:30:34 octopi kernel: [15480.943716] Tainted: G WC 4.19.75-v7l+ #1270
Aug 7 21:30:34 octopi kernel: [15480.943740] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 7 21:30:34 octopi kernel: [15480.943749] vcgencmd D 0 3655 1 0x00000005
Aug 7 21:30:34 octopi kernel: [15480.943780] [] (__schedule) from [] (schedule+0x50/0xa8)
Aug 7 21:30:34 octopi kernel: [15480.943799] [] (schedule) from [] (schedule_timeout+0x200/0x428)
Aug 7 21:30:34 octopi kernel: [15480.943817] [] (schedule_timeout) from [] (__down+0x98/0xec)
Aug 7 21:30:34 octopi kernel: [15480.943836] [] (__down) from [] (down+0x54/0x68)
Aug 7 21:30:34 octopi kernel: [15480.943857] [] (down) from [] (vchiq_release+0x160/0x354)
Aug 7 21:30:34 octopi kernel: [15480.943877] [] (vchiq_release) from [] (__fput+0xa4/0x1e8)
Aug 7 21:30:34 octopi kernel: [15480.943895] [] (__fput) from [] (____fput+0x18/0x1c)
Aug 7 21:30:34 octopi kernel: [15480.943913] [] (____fput) from [] (task_work_run+0xbc/0xe0)
Aug 7 21:30:34 octopi kernel: [15480.943933] [] (task_work_run) from [] (do_exit+0x3e0/0xc18)
Aug 7 21:30:34 octopi kernel: [15480.943951] [] (do_exit) from [] (do_group_exit+0x4c/0xe4)
Aug 7 21:30:34 octopi kernel: [15480.943970] [] (do_group_exit) from [] (get_signal+0x1a4/0x8cc)
Aug 7 21:30:34 octopi kernel: [15480.943987] [] (get_signal) from [] (do_signal+0x274/0x474)
Aug 7 21:30:34 octopi kernel: [15480.944002] [] (do_signal) from [] (do_work_pending+0xdc/0xf4)
Aug 7 21:30:34 octopi kernel: [15480.944016] [] (do_work_pending) from [] (slow_work_pending+0xc/0x20)
Aug 7 21:30:34 octopi kernel: [15480.944027] Exception stack(0xd91cbfb0 to 0xd91cbff8)
Aug 7 21:30:34 octopi kernel: [15480.944039] bfa0: fffffffc c01cc402 be9abbe4 00010001
Aug 7 21:30:34 octopi kernel: [15480.944053] bfc0: b6ee2404 b6ee2308 be9abc28 00000036 0001140c 000221e0 ffffffff 00000003
Aug 7 21:30:34 octopi kernel: [15480.944065] bfe0: b6ee2240 be9abbd4 b6ece928 b6de151c 60000010 00000003

Hope this helps

Does really nobody have an idea ? I mean it is really strange, that a specific printer-movement in x or y - direction causes the camera to crash. z-Movement does not affect anything. maybe @foosel has an idea how this might hang together ? It is reproduceable.
My last option might be is a complete new install from scratch.

Still hoping vor Ideas.

Best gregards

Try making sure your printer is not being back-powered from the Pi. Way to test: Turn printer power off, but leave Raspberry Pi on - does the LCD screen stay lit, or any lights on the printer motherboard?

I'm thinking maybe the printer sucks some power, which could cause the camera to crash.

There is a solution, and it is to tape over the 5V pin in USB cable. If you confirm the above, I can find the guide

hi @Charlie_Powell: when the Printer is off, the Display stays on.
Would be very kind of you to tell me where to find the guide :wink:

1 Like
1 Like

Thank you, I will try this evening and come back then.