[sr-dev] [kamailio/kamailio] RPC command stats.get_statistics randomly reporting 9223372036854776000 for current active/early dialogs (#1591)

[Joel Serrano]

Hi Daniel, 

This is what I can get:

```
root at kamailio2:/var/tmp# gdb /usr/sbin/kamailio -ex "bt full" --batch core.kamailio.1334.13cn4.1531505030 > core.kamailio.1334.13cn4.1531505030-bt_full.txt
66	../../core/parser/../mem/../atomic/atomic_common.h: No such file or directory.
root at kamailio2:/var/tmp# gdb /usr/sbin/kamailio -ex "bt full" --batch core.kamailio.1335.13cn4.1531505030 > core.kamailio.1335.13cn4.1531505030-bt_full.txt
66	../../core/parser/../mem/../atomic/atomic_common.h: No such file or directory.
root at kamailio2:/var/tmp# gdb /usr/sbin/kamailio -ex "bt full" --batch core.kamailio.1336.13cn4.1531505030 > core.kamailio.1336.13cn4.1531505030-bt_full.txt
66	../../core/parser/../mem/../atomic/atomic_common.h: No such file or directory.
root at kamailio2:/var/tmp# gdb /usr/sbin/kamailio -ex "bt full" --batch core.kamailio.1337.13cn4.1531505030 > core.kamailio.1337.13cn4.1531505030-bt_full.txt
66	../../core/parser/../mem/../atomic/atomic_common.h: No such file or directory.
root at kamailio2:/var/tmp# gdb /usr/sbin/kamailio -ex "bt full" --batch core.kamailio.1338.13cn4.1531505030 > core.kamailio.1338.13cn4.1531505030-bt_full.txt
66	../../core/parser/../mem/../atomic/atomic_common.h: No such file or directory.
root at kamailio2:/var/tmp# gdb /usr/sbin/kamailio -ex "bt full" --batch core.kamailio.1339.13cn4.1531505030 > core.kamailio.1339.13cn4.1531505030-bt_full.txt
66	../../core/parser/../mem/../atomic/atomic_common.h: No such file or directory.
root at kamailio2:/var/tmp# gdb /usr/sbin/kamailio -ex "bt full" --batch core.kamailio.24376.13cn4.1531504766 > ocre.kamailio.24376.13cn4.1531504766-bt_full.txt
51	../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
root at kamailio2:/var/tmp# gdb /usr/sbin/kamailio -ex "bt full" --batch core.kamailio.28420.13cn4.1531504860 > ocre.kamailio.28420.13cn4.1531504860-bt_full.txt
BFD: Warning: /var/tmp/core.kamailio.28420.13cn4.1531504860 is truncated: expected core file size >= 8607031296, found: 2081087488.
Cannot access memory at address 0x7fc79b2dc148
Cannot access memory at address 0x7fc79b2dc140
Failed to read a valid object file image from memory.
root at kamailio2:/var/tmp# gdb /usr/sbin/kamailio -ex "bt full" --batch core.kamailio.28421.13cn4.1531504860 > ocre.kamailio.28421.13cn4.1531504860-bt_full.txt
BFD: Warning: /var/tmp/core.kamailio.28421.13cn4.1531504860 is truncated: expected core file size >= 8607031296, found: 2136645632.
Cannot access memory at address 0x7fc79b2dc148
Cannot access memory at address 0x7fc79b2dc140
Failed to read a valid object file image from memory.
root at kamailio2:/var/tmp# gdb /usr/sbin/kamailio -ex "bt full" --batch core.kamailio.28422.13cn4.1531504860 > ocre.kamailio.28422.13cn4.1531504860-bt_full.txt
BFD: Warning: /var/tmp/core.kamailio.28422.13cn4.1531504860 is truncated: expected core file size >= 8607031296, found: 2128039936.
Cannot access memory at address 0x7fc79b2dc148
Cannot access memory at address 0x7fc79b2dc140
Failed to read a valid object file image from memory.
root at kamailio2:/var/tmp# gdb /usr/sbin/kamailio -ex "bt full" --batch core.kamailio.28423.13cn4.1531504860 > ocre.kamailio.28423.13cn4.1531504860-bt_full.txt
BFD: Warning: /var/tmp/core.kamailio.28423.13cn4.1531504860 is truncated: expected core file size >= 8607031296, found: 2174545920.
Cannot access memory at address 0x7fc79b2dc148
Cannot access memory at address 0x7fc79b2dc140
Failed to read a valid object file image from memory.
root at kamailio2:/var/tmp#
```

[core.kamailio.1334.13cn4.1531505030-bt_full.txt](https://github.com/kamailio/kamailio/files/2193740/core.kamailio.1334.13cn4.1531505030-bt_full.txt)
[core.kamailio.1335.13cn4.1531505030-bt_full.txt](https://github.com/kamailio/kamailio/files/2193741/core.kamailio.1335.13cn4.1531505030-bt_full.txt)
[core.kamailio.1336.13cn4.1531505030-bt_full.txt](https://github.com/kamailio/kamailio/files/2193742/core.kamailio.1336.13cn4.1531505030-bt_full.txt)
[core.kamailio.1337.13cn4.1531505030-bt_full.txt](https://github.com/kamailio/kamailio/files/2193743/core.kamailio.1337.13cn4.1531505030-bt_full.txt)
[core.kamailio.1338.13cn4.1531505030-bt_full.txt](https://github.com/kamailio/kamailio/files/2193744/core.kamailio.1338.13cn4.1531505030-bt_full.txt)
[core.kamailio.1339.13cn4.1531505030-bt_full.txt](https://github.com/kamailio/kamailio/files/2193745/core.kamailio.1339.13cn4.1531505030-bt_full.txt)
[ocre.kamailio.24376.13cn4.1531504766-bt_full.txt](https://github.com/kamailio/kamailio/files/2193746/ocre.kamailio.24376.13cn4.1531504766-bt_full.txt)
[ocre.kamailio.28420.13cn4.1531504860-bt_full.txt](https://github.com/kamailio/kamailio/files/2193747/ocre.kamailio.28420.13cn4.1531504860-bt_full.txt)
[ocre.kamailio.28421.13cn4.1531504860-bt_full.txt](https://github.com/kamailio/kamailio/files/2193748/ocre.kamailio.28421.13cn4.1531504860-bt_full.txt)
[ocre.kamailio.28422.13cn4.1531504860-bt_full.txt](https://github.com/kamailio/kamailio/files/2193749/ocre.kamailio.28422.13cn4.1531504860-bt_full.txt)
[ocre.kamailio.28423.13cn4.1531504860-bt_full.txt](https://github.com/kamailio/kamailio/files/2193750/ocre.kamailio.28423.13cn4.1531504860-bt_full.txt)

I have no idea how to read backtraces, but I can tell you in advance there are plenty of `*dmq*` references in there...

Let me know what you think and next steps I can do to help troubleshoot this.

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