Hello,
I implemented some image processing scripts using cv2 (Python OpenCV). BBB is connected to some motor drivers and a usb webcam.
Python scripts take some photos by using cv2.VideoCapture(0) object (which is the webcam for my case). Then i release it after taking photos.
But, after running this script several times, during webcam initialization process (running cv2.VideoCapture(0)) i get kernel error messages and bbb freezes.
Message is shown below:
Message from syslogd@beaglebone at Feb 23 14:55:36 …
kernel:[ 1245.057025] Internal error: Oops: 17 [#1] SMP THUMB2
Message from syslogd@beaglebone at Feb 23 14:55:36 …
kernel:[ 1245.138142] Process swapper/0 (pid: 0, stack limit = 0xc07a0240)
Message from syslogd@beaglebone at Feb 23 14:55:36 …
kernel:[ 1245.144487] Stack: (0xc07a1e70 to 0xc07a2000)
Message from syslogd@beaglebone at Feb 23 14:55:36 …
kernel:[ 1245.149195] 1e60: de0e6100 00000001 00000098 0000000d
Message from syslogd@beaglebone at Feb 23 14:55:36 …
kernel:[ 1245.157847] 1e80: 00000000 c02f1ae5 de0e6100 20000193 de0e6100 df175cc0 00000004 20000000
Message from syslogd@beaglebone at Feb 23 14:55:36 …
kernel:[ 1245.166496] 1ea0: 00000000 e087a800 df178c10 c02f55bb 00000013 60000193 c08253b4 de0c9840
Message from syslogd@beaglebone at Feb 23 14:55:36 …
kernel:[ 1245.175142] 1ec0: df005ec0 00000013 00000013 c07a1f68 413fc082 00000000 00000000 c0067fa9
Message from syslogd@beaglebone at Feb 23 14:55:36 …
kernel:[ 1245.183789] 1ee0: c0cafed8 80000193 00000000 df00c680 df005ec0 df005ec0 df005f10 de0c9840
Message from syslogd@beaglebone at Feb 23 14:55:36 …
kernel:[ 1245.229756] 1f00: 00000013 c07a1f68 413fc082 00000000 00000000 c00680f9 df005ec0 df005f10
Message from syslogd@beaglebone at Feb 23 14:55:36 …
kernel:[ 1245.245064] 1f20: fa200098 c0069b17 c0069aa9 00000013 00000000 c0067bff 00000013 c000c8cb
Message from syslogd@beaglebone at Feb 23 14:55:36 …
kernel:[ 1245.260214] 1f40: c0827f3c fa2000d8 fa2000b8 c0008551 c000ca20 60000033 ffffffff c07a1f9c
Message from syslogd@beaglebone at Feb 23 14:55:36 …
kernel:[ 1245.274681] 1f60: 80004059 c045b95b ffffffed 00000000 00513000 00000000 c07a0000 c0827308
Message from syslogd@beaglebone at Feb 23 14:55:37 …
kernel:[ 1245.289441] 1f80: c0463bd8 c0cac480 80004059 413fc082 00000000 00000000 00000000 c07a1fb0
Message from syslogd@beaglebone at Feb 23 14:55:37 …
kernel:[ 1245.304472] 1fa0: c000ca1f c000ca20 60000033 ffffffff c000ca0f c000cb35 c07a9630 00000000
Message from syslogd@beaglebone at Feb 23 14:55:37 …
kernel:[ 1245.319654] 1fc0: c0788b20 c076456b ffffffff ffffffff c0764201 00000000 00000000 c0788b20
Message from syslogd@beaglebone at Feb 23 14:55:37 …
kernel:[ 1245.335179] 1fe0: 00000000 50c5387d c07a84f0 c0788b1c c07ad47c 8000807f 00000000 00000000
I even did not understand what does this message means, and i cant debug it. Can you give any suggestions to solve this problem?
“cat /proc/version” gives:
Linux version 3.8.13-bone47 (root@imx6q-wandboard-2gb-0) (gcc version 4.6.3 (Debian 4.6.3-14) ) #1 SMP Fri Apr 11 01:36:09 UTC 2014