Segment violation when switching to Motion

Bugs
#1

I’m very new to bluecherry but today I encountered a bug which crashed the server. It occurred when I introduced motion into a specific device’s schedule for the first time. Previously all of my cameras were set to continuous always.

log file section:

Jan  1 22:49:44 bluecherry bc-server[16961]: I(2/Garage): Applying configuration changes
Jan  1 22:51:22 bluecherry bc-server[16961]: I(2/Garage): Last message repeated 1 times!
Jan  1 22:51:22 bluecherry bc-server[16961]: I(2/Garage): Switching to new recording schedule 'motion'
Jan  1 22:51:22 bluecherry bc-server[16961]: BUG: Segment violation at 0x0000000000000008
Jan  1 22:51:22 bluecherry bc-server[16961]: Call trace:
Jan  1 22:51:22 bluecherry bc-server[16961]: [0x0000000000420580]  @ /usr/sbin/bc-server
Jan  1 22:51:22 bluecherry bc-server[16961]: [0x00007ff2cb1ce4b0]  @ /lib/x86_64-linux-gnu/libc.so.6
Jan  1 22:51:22 bluecherry bc-server[16961]: [0x00007ff2cd1d6513] av_buffer_ref+0x00000000 @ /usr/lib/bluecherry/libavutil.so.56
Jan  1 22:51:22 bluecherry bc-server[16961]: [0x0000000000424af8]  @ /usr/sbin/bc-server
Jan  1 22:51:22 bluecherry bc-server[16961]: [0x00007ff2cd57d518]  @ /usr/lib/bluecherry/libavcodec.so.58
Jan  1 22:51:22 bluecherry bc-server[16961]: [0x00007ff2cd5fabbd]  @ /usr/lib/bluecherry/libavcodec.so.58
Jan  1 22:51:22 bluecherry bc-server[16961]: [0x00007ff2cd5fba84]  @ /usr/lib/bluecherry/libavcodec.so.58
Jan  1 22:51:22 bluecherry bc-server[16961]: [0x00007ff2cd600822]  @ /usr/lib/bluecherry/libavcodec.so.58
Jan  1 22:51:22 bluecherry bc-server[16961]: [0x00007ff2cd60410a]  @ /usr/lib/bluecherry/libavcodec.so.58
Jan  1 22:51:22 bluecherry bc-server[16961]: [0x00007ff2cd57ba0b]  @ /usr/lib/bluecherry/libavcodec.so.58
Jan  1 22:51:22 bluecherry bc-server[16961]: [0x00007ff2cd57c678] avcodec_send_packet+0x00000000 @ /usr/lib/bluecherry/libavcodec.so.58
Jan  1 22:51:22 bluecherry bc-server[16961]: [0x00007ff2cd57ebc7]  @ /usr/lib/bluecherry/libavcodec.so.58
Jan  1 22:51:22 bluecherry bc-server[16961]: [0x000000000042245e]  @ /usr/sbin/bc-server
Jan  1 22:51:22 bluecherry bc-server[16961]: [0x00000000004228c9]  @ /usr/sbin/bc-server
Jan  1 22:51:22 bluecherry bc-server[16961]: [0x00007ff2caf836ba]  @ /lib/x86_64-linux-gnu/libpthread.so.0
Jan  1 22:51:22 bluecherry bc-server[16961]: [0x00007ff2cb2a041d] clone+0x00000000 @ /lib/x86_64-linux-gnu/libc.so.6
#2

I’m also new, and also using motion detection, and seeing similar segfaults, on Ubuntu 18.04.3.

Jan  1 00:27:45 gwmobo bc-server[10368]: BUG: Segment violation at 0x00007f0000bffc90
Jan  1 00:27:45 gwmobo bc-server[10368]: Call trace:
Jan  1 00:27:45 gwmobo bc-server[10368]: [0x0000559d5502208a]  @ /usr/sbin/bc-server
Jan  1 00:27:45 gwmobo bc-server[10368]: [0x00007fdda4dadf20]  @ /lib/x86_64-linux-gnu/libc.so.6
Jan  1 00:27:45 gwmobo bc-server[10368]: [0x00007fdda6d8a03c] av_buffer_pool_get+0x00000000 @ /usr/lib/bluecherry/libavutil.so.55
Jan  1 00:27:45 gwmobo bc-server[10368]: [0x00007fdda724d444] avcodec_default_get_buffer2+0x00000000 @ /usr/lib/bluecherry/libavcodec.so.57
Jan  1 00:27:45 gwmobo bc-server[10368]: [0x00007fdda724dd2b]  @ /usr/lib/bluecherry/libavcodec.so.57
Jan  1 00:27:45 gwmobo bc-server[10368]: [0x00007fdda7223bf7]  @ /usr/lib/bluecherry/libavcodec.so.57
Jan  1 00:27:45 gwmobo bc-server[10368]: [0x00007fdda70f5b0e]  @ /usr/lib/bluecherry/libavcodec.so.57
Jan  1 00:27:45 gwmobo bc-server[10368]: [0x00007fdda70fa749]  @ /usr/lib/bluecherry/libavcodec.so.57
Jan  1 00:27:45 gwmobo bc-server[10368]: [0x00007fdda70a92f6]  @ /usr/lib/bluecherry/libavcodec.so.57
Jan  1 00:27:45 gwmobo bc-server[10368]: [0x00007fdda70aafef]  @ /usr/lib/bluecherry/libavcodec.so.57
Jan  1 00:27:45 gwmobo bc-server[10368]: [0x00007fdda724eefa] avcodec_decode_video2+0x00000000 @ /usr/lib/bluecherry/libavcodec.so.57
Jan  1 00:27:45 gwmobo bc-server[10368]: [0x0000559d550240aa]  @ /usr/sbin/bc-server
Jan  1 00:27:45 gwmobo bc-server[10368]: [0x0000559d550245c9]  @ /usr/sbin/bc-server
Jan  1 00:27:45 gwmobo bc-server[10368]: [0x00007fdda4b576db]  @ /lib/x86_64-linux-gnu/libpthread.so.0
Jan  1 00:27:45 gwmobo bc-server[10368]: [0x00007fdda4e9088f] clone+0x00000000 @ /lib/x86_64-linux-gnu/libc.so.6
#3

Can you please tell which version of Bluecherry server do you run?

#4

Yes, I should have included that in my first post. I am running 3.0.0 built from master, on Ubuntu Server 16.04.6.

#5

In my case, version 2.8.8 installed from http://ubuntu.bluecherrydvr.com

#6

Should be fixed now, please try to pull latest changes from the master branch and rebuild/reinstall

#7

Can you please provide some more details? Like, what camera do you use, stream settings? Does it crash every time when motion detection is enabled or sometimes?

#8

For me, the crashes are sporadic - happens maybe once every 2-3 days, and not obviously tied to motion detection events (there’s nothing in the log immediately preceding the crash). I’m streaming RTSP from a couple of Wyze V2 cams (for now - still evaluating options for “real” cams)

#9

It might be a couple of days before I can try to replicate it, I had deleted that VM. It’s just speculation but I recall that before adding cameras I had set the global schedule to ‘Off’ -> ‘Fill All’ and was then intending on setting individual schedules as I added each camera.

The cameras are Wyze Cam v2 with RTSP firmware re-flash. Currently running without issue on my production DVR (bluecherry 2.8.8).

#10

I have been unable to reproduce the issue after trying various combinations of camera and global motion settings for a newly added camera.