[sr-dev] [kamailio] MS ODBC Driver crashes kamailio on boot (#501)

[Daniel-Constantin Mierla]

The first core is relevant, the other one is because kamailio tries to shut down due to other process crash, but ends in a deadlock, likely because the process that crashed didn't release a lock.

In the fist core, the problem seems to be in the odbc driver - the backtrace leaves the code of kamailio with the next frames:

```
#29 0x00007fbc4ec17c66 in SQLDriverConnectW () from /opt/microsoft/msodbcsql/lib64/libmsodbcsql-13.0.so.0.0
No symbol table info available.
#30 0x00007fbc565deabd in SQLDriverConnect (hdbc=0x1121920, hwnd=0x7ffd06240460, conn_str_in=0x1142cb0 "D", len_conn_str_in=25892, conn_str_out=0x7ffd0624bf60 "\001\200\255\373\274\177", conn_str_out_max=0, ptr_conn_str_out=0x7ffd0624bf5e, driver_completion=1) at SQLDriverConnect.c:1490
        uc_conn_str_in = 0x1142cb0
```

Not sure I can really help much more here.

Can you test with other versions of odbc and ms odbc drivers?

Does libmsodbcsql has a package for debug symbols? Or, if libmsodbcsql is open source, maybe you can install it from sources with debug symbols on. Then the backtrace will show where in the source code of libmsodbcsql the crash happens and from there further investigation can be done in order to spot the problem.

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