[ net-snmp-Bugs-3059732 ] 5.6.pre3 snmptrapd "hangs" after forwarding a SNMPv3 trap

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Bugs item #3059732, was opened at 2010-09-05 10:57
Message generated for change (Tracker Item Submitted) made by pucikv
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Category: snmptrapd
Group: linux
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Viliam Púčik (pucikv)
Assigned to: Nobody/Anonymous (nobody)
Summary: 5.6.pre3 snmptrapd "hangs" after forwarding a SNMPv3 trap

Initial Comment:
NET-SNMP: 5.6.pre3
Linux: 2.6.35-ARCH x86_64

[compilation options]
./configure --disable-embedded-perl --enable-ipv6 --prefix=/tmp/net-snmp --with-defaults --with-transports=TCPIPv6 UDPIPv6 --without-perl-modules --with-mib-modules=smux examples/example && make install && cd /tmp/net-snmp
...
[configuration file]
cat ./etc/snmp/snmptrapd.conf
authUser log,execute,net user
createUser -e 0x0102030405 user MD5 secretpassword DES
forward default 10.0.0.1
...
[snmptrapd daemon options]
./sbin/snmptrapd -D -c ./etc/snmp/snmptrapd.conf -f -Le 10162 2>debug.txt
...
[testing SNMPv3 trap]
snmptrap -v 3 -e 0x0102030405 -l authNoPriv -u user -a MD5 -A secretpassword localhost:10162 42 0

Snmptrapd starts eating many system resources (CPU, RAM) and ends in endless loop after forwarding a SNMPv3 trap. Only kill -9 ends its suffering.
Testing this with an older version of snmptrapd (NET-SNMP 5.3 in Centos 5.5) leads to a segmentation fault.

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