snmpd crashed when send traps

Hi Experts

I’m using net-snmp version 5.8 agent code to send traps, I implemented my own trap sending code and compile it to a dynamic loaded object (myTrap.so), and loaded in by putting configuration into snmpd.conf like this:

dlmod myTrap /usr/lib/myTrap.so


However, every time when I triggered the trap sending, snmpd got crashed, below is the decode:

Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f659dc56a07 in get_target_sessions (taglist=0x7f659eb90980 "internal0", filterfunct=filterfunct@entry=0x0, filterArg=filterArg@entry=0x0) at target/target.c:44
44	target/target.c: No such file or directory.
[Current thread is 1 (LWP 49)]
(gdb) bt
#0  0x00007f659dc56a07 in get_target_sessions (taglist=0x7f659eb90980 "internal0", filterfunct=filterfunct@entry=0x0, filterArg=filterArg@entry=0x0) at target/target.c:44
#1  0x00007f659dc7d91a in send_notifications (major=<optimized out>, minor=7, serverarg=0x7f659eba4880, clientarg=<optimized out>) at notification/snmpNotifyTable_data.c:222
#2  0x00007f659d8e51f6 in snmp_call_callbacks (major=major@entry=1, minor=minor@entry=7, caller_arg=caller_arg@entry=0x7f659eba4880) at callback.c:363
#3  0x00007f659e0bb953 in netsnmp_send_traps (trap=-1, specific=<optimized out>, enterprise=0x7f659e0e1100 <trap_version_id>, enterprise_length=10, vars=<optimized out>,
    context=context@entry=0x0, flags=0) at agent_trap.c:1033
#4  0x00007f659e0bbc9e in send_enterprise_trap_vars (trap=<optimized out>, specific=<optimized out>, enterprise=<optimized out>, enterprise_length=<optimized out>,
    vars=<optimized out>) at agent_trap.c:1047
#5  0x00007f659cc9d70e in send_MyTrap (


Any suggestions ?

Thanks
Spark

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