Database Listener Problem

[indersh]

Exception signal: 11 (SIGSEGV), code: 1 (Address not mapped to object), addr: 0x0, PC: [0x94d9c84, keltinso()+3532]
Registers:
%eax: 0x00000000 %ebx: 0x00000018 %ecx: 0xb76138e4
%edx: 0x0bcb952c %edi: 0x00000000 %esi: 0x00000017
%esp: 0xbfffdb10 %ebp: 0xbfffe074 %eip: 0x094d9c84
%efl: 0x00010246
keltinso()+3513 (0x94d9c71) movzw 0xfffffaa8(%ebp),%ebx
keltinso()+3520 (0x94d9c78) lea 0x1(%ebx),%eax
keltinso()+3523 (0x94d9c7b) mov %ax,0xfffffaa8(%ebp)
keltinso()+3530 (0x94d9c82) xor %eax,%eax
> keltinso()+3532 (0x94d9c84) movb (%edi),%dh
keltinso()+3534 (0x94d9c86) mov %edi,%ecx
keltinso()+3536 (0x94d9c88) testb %dh,%dh
keltinso()+3538 (0x94d9c8a) je 0x94d9c98
keltinso()+3540 (0x94d9c8c) add $1,%ecx
*** 2007-10-15 11:28:03.908
ksedmp: internal or fatal error
ORA-07445: exception encountered: core dump [keltinso()+3532] [SIGSEGV] [Address not mapped to object] [0x0] [] []
----- Call Stack Trace -----
calling call entry argument values in hex
location type point (? means dubious value)
-------------------- -------- -------------------- ----------------------------
ksedmp()+557 call ksedst()+0 1 ? 0 ? 1 ? 1 ? 1 ? 1 ?
ssexhd()+1163 call ksedmp()+0 3 ? 0 ? 0 ? 0 ? 0 ? 0 ?
keltinso()+3532 signal ssexhd()+0 B ? B7721C90 ? B7721D10 ?
keltpost()+1047 call keltinso()+0 BCB952C ? BCB952C ? 1 ?
B7603A05 ? B200088 ?
BFFFE200 ?
ktte_issue_ts_alert call keltpost()+0 BFFFE364 ? 0 ? 500215E8 ? D ?
()+223 64D4ED0C ? 9 ?
ktte_check_threshol call ktte_issue_ts_alert 6285F1C8 ? BFFFE3F8 ? 0 ?
d()+458 ()+0 64D4ED0C ? BFFFE6E0

Can anyone help about this?