5.3.1.pre3 agent coring when walking proxied Squid MIB

I am getting snmpd cores each time I walk the Squid MIB, which I
am proxying with the Net-SNMP agent using the following line
in snmpd.conf.

proxy -v 1 -c public 127.0.0.1:3401 .1.3.6.1.4.1.3495

I have recompiled the agent to add -g to the cflags so you can see the
calling parameters in the following gdb backtrace.

#0  0x000000370062f3b0 in raise () from /lib64/libc.so.6
#1  0x0000003700630860 in abort () from /lib64/libc.so.6
#2  0x0000003700664caf in __libc_message () from /lib64/libc.so.6
#3  0x000000370066a94e in _int_free () from /lib64/libc.so.6
#4  0x000000370066ae7e in free () from /lib64/libc.so.6
#5  0x00002aaaaad0d77e in netsnmp_free_delegated_cache (dcache=0x61df40) 
at agent_handler.c:732
#6  0x00002aaaaaaf1446 in proxy_got_response (operation=1, 
sess=0x5fb530, reqid=1132777213, pdu=0x60c2f0,
  cb_data=0x61df40) at ucd-snmp/proxy.c:646
#7  0x00002aaaaaf97f20 in _sess_process_packet (sessp=0x5fb490, 
sp=0x5fb530, isp=0x5fb4c0,
  transport=0x5fb830, opaque=0x60c290, olength=16, packetptr=0x60c690 
"0\202", length=59)
  at snmp_api.c:5253
#8  0x00002aaaaaf9974a in _sess_read (sessp=0x5fb490, 
fdset=0x7fffff882e30) at snmp_api.c:5753
#9  0x00002aaaaaf9979b in snmp_sess_read (sessp=0x5fb490, 
fdset=0x7fffff882e30) at snmp_api.c:5772
#10 0x00002aaaaaf982d0 in snmp_read (fdset=0x7fffff882e30) at 
snmp_api.c:5392
#11 0x0000000000404274 in receive () at snmpd.c:1152
#12 0x0000000000403c69 in main (argc=7, argv=0x7fffff8830d8) at snmpd.c:1001

The core was produced when I did a getnext against the last OID in the Squid
MIB:

snmpgetnext -c public -v2c  192.168.2.12  \
  
SQUID-MIB::cacheClientIcpHitKb.127.0.0.1                                                                                                            
 

Looks to me like the agent is passing a bad handle to free().

The agent is compiled for a 64-bit athelon processor and is running on a 
2.6.14 Linux kernel.

Has anyone else seen this behavior?

-John





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