[dnsdist] dnsdist 1.9.4 segfault

[Nicolas Baumgarten]

Hi!
we started testing 1.9.4 on centos 7 before upgrading, and it segfaults,
after 20 seconds of running.

We are using:
-- SNMP TRAP
snmpAgent(true,"udp:192.168.1.54:162")

After commenting this, all works ok.

The log is:
Jun  2 17:29:25 vilma dnsdist: Polled security status of version 1.9.4 at
startup, no known issues reported: OK
Jun  2 17:29:40 vilma dnsdist: Use snmp_sess_select_info2() for processing
large file descriptors
Jun  2 17:29:41 vilma dnsdist: Use snmp_sess_select_info2() for processing
large file descriptors
Jun  2 17:29:42 vilma dnsdist: Use snmp_sess_select_info2() for processing
large file descriptors
Jun  2 17:29:43 vilma dnsdist: Use snmp_sess_select_info2() for processing
large file descriptors
Jun  2 17:29:44 vilma dnsdist: Use snmp_sess_select_info2() for processing
large file descriptors
Jun  2 17:29:45 vilma dnsdist: Use snmp_sess_select_info2() for processing
large file descriptors
Jun  2 17:29:46 vilma kernel: dnsdist/SNMP[8244]: segfault at 0 ip
  (null) sp 00007f3af672cf40 error 14
Jun  2 17:29:46 vilma systemd: dnsdist.service: main process exited,
code=killed, status=11/SEGV
Jun  2 17:29:46 vilma systemd: Unit dnsdist.service entered failed state.

CENTOS: CentOS Linux release 7.9.2009 (Core)
if it helps:
/usr/lib64/libnetsnmp.so.31.0.2
/usr/share/doc/net-snmp-libs-5.7.2

Hope it helps.

Saludos! and as always Thanks for this great piece of software.
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