postgres dump cores

Hi,

I'm using Postgres V 7.4.14 on HPUX 11.31 box. While doing a load test there
was a core generated not sure why. Can you please help.

Core was generated by `postgres'.
Program terminated with signal 6, Aborted.

#0 0x60000000c0587970:0 in kill+0x30 () from /usr/lib/hpux32/libc.so.1
(gdb) bt
#0 0x60000000c0587970:0 in kill+0x30 () from /usr/lib/hpux32/libc.so.1
#1 0x60000000c0438e40:0 in raise+0x120 () from /usr/lib/hpux32/libc.so.1
#2 0x60000000c0548f50:0 in abort+0x170 () from /usr/lib/hpux32/libc.so.1
#3 0x4681890:0 in errfinish () at elog.c:476
#4 0x4685920:0 in elog_finish () at elog.c:849
#5 0x44f01b0:0 in s_lock_stuck () at s_lock.c:36
#6 0x44f02b0:0 in s_lock () at s_lock.c:94
#7 0x41dc800:0 in XLogInsert () at xlog.c:637
#8 0x41a91e0:0 in _bt_split () at nbtinsert.c:910
#9 0x41a6640:0 in _bt_insertonpg () at nbtinsert.c:507
#10 0x41a5060:0 in _bt_doinsert () at nbtinsert.c:141
#11 0x41b15f0:0 in btinsert () at nbtree.c:264
#12 0x4691010:0 in OidFunctionCall6 () at fmgr.c:1345
#13 0x41a16b0:0 in index_insert () at indexam.c:226
#14 0x43722e0:0 in ExecInsertIndexTuples () at execUtils.c:852
#15 0x42cd2f0:0 in CopyFrom () at copy.c:1699
#16 0x42c9770:0 in DoCopy () at copy.c:861
#17 0x4510ef0:0 in Proce
ssUtility () at utility.c:480
#18 0x450e020:0 in PortalRunUtility () at pquery.c:793
#19 0x450d390:0 in PortalRunMulti () at pquery.c:857
#20 0x450c690:0 in PortalRun () at pquery.c:486
#21 0x45017c0:0 in exec_simple_query () at postgres.c:914
#22 0x4509d70:0 in PostgresMain () at postgres.c:2967
#23 0x447b6c0:0 in BackendFork () at postmaster.c:2564
#24 0x4476790:0 in BackendStartup () at postmaster.c:2207
#25 0x4476020:0 in ServerLoop () at postmaster.c:1119
#26 0x4472000:0 in PostmasterMain () at postmaster.c:897
#27 0x43c2d30:0 in main () at main.c:222

Thanks & Regards

Rajaram J