Hi,
The snmptrapd core dump again after bring up 8 days, the result is same
as before, please see the attachment.
Please advise.
Lan
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Wu,
Lan, ALABS
Sent: Wednesday, July 20, 2005 11:29 AM
To: net-snmp-users@lists.sourceforge.net
Subject: RE: snmptrapd Core Dump !
Robert,
Thanks for returning my email, the strange thing is, this core dump was
happened the first time after I installed the 5.2.1 and patch for
snmptrapd to fix the memory leak problem, the snmptrpad can not hold for
a day (traps comes in rapidly) then core dump, however, after that I
restarted the snmptrpd it was soaking there for a week (same volume)
then I restarted it and soaking another week, it just does not happen
now (my custom one). I am afraid this may be a time-bomb in the
production. (in fact, I am updating the software in production this
weekend)
<< Does this still happen consistently? >>
It only happened once.
<< Does it happen if you use the default log format, instead of your
custom one? >>
I am always use the custom one. I want to recreate the core dump.
Please advise.
Thanks.
Lan
-----Original Message-----
From: Robert Story [mailto:[EMAIL PROTECTED]
Sent: Wednesday, July 20, 2005 11:10 AM
To: Wu, Lan, ALABS
Cc: net-snmp-users@lists.sourceforge.net
Subject: Re: snmptrapd Core Dump !
On Tue, 19 Jul 2005 18:08:01 -0500 Wu, wrote:
WLA> -----Original Message-----
WLA> On Mon, 27 Jun 2005 09:57:41 -0500 Wu, wrote:
WLA> WLA> I was away for few days, Today, I check the snmptrapd, it core
dump
WLA> WLA> less a day (6/21 14:01:54 to 6/22 11:31), although the memory
did not
WLA> WLA> increase, but it is still core dump in the same place, please
see the
WLA> WLA> attachment. So I am guessing the memory leak may be not the
root
WLA> WLA> cause of the core dump ??
WLA>
WLA> > 1333 sprintf(str, "%ld", *var->val.integer);
WLA> Thanks for returning my email, I still keep the old core file here
is the
WLA> outcome:
WLA>
WLA> (gdb) print *var
WLA> $2 = {next_variable = 0x302b8, name = 0x30078, name_length = 10,
WLA> type = 5 '\005', val = {integer = 0x0, string = 0x0, objid = 0x0,
WLA> bitstring = 0x0, counter64 = 0x0, floatVal = 0x0, doubleVal =
0x0},
WLA> (gdb) print var->val.integer
WLA> $3 = (long int *) 0x0
That's what I expected. But I don't know why it would happen. A NULL val
pointer would seem to indicated a failed malloc, but for an integer it
should
always use the internal buffer instead of allocating memory.
Does this still happen consistenly?
Does it happen if you use the default log format, instead of your custom
one?
--
NOTE: messages sent directly to me, instead of the lists, will be
deleted
unless they are requests for paid consulting services.
Robert Story; NET-SNMP Junkie
Support: <http://www.net-snmp.org/> <irc://irc.freenode.net/#net-snmp>
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rw------- 1 snmp staff 1187656 Jul 28 18:18 core
$ gdb /home/snmp/netsnmp/net-snmp/5.2.1/apps/libs/snmptrapd
/home/snmp/snmpcol/bin
GNU gdb 6.0
Copyright 2003 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as
"sparc-sun-solaris2.8".../home/snmp/netsnmp/net-snmp/5.2.1/apps/libs/snmptrapd:
No such file or directory.
"/home/snmp/snmpcol/bin" is not a core dump: File format not recognized
(gdb) exit
Undefined command: "exit". Try "help".
(gdb) quit
$ apps/libs/snmptrapd /home/snmp/snmpcol/bin/core <
GNU gdb 6.0
Copyright 2003 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as
"sparc-sun-solaris2.8".../home/snmp/netsnmp/net-snmp/5.2.1/apps/libs/snmptrapd:
No such file or directory.
Core was generated by `snmptrapd -f -F
%N|%w%q|%#y%#02m%#02l_%#02.2h%#02.2j%#02.2k|%A|%B|%-v\n -OTausQ'.
Program terminated with signal 11, Segmentation fault.
#0 0xff196054 in ?? ()
(gdb) where
#0 0xff196054 in ?? ()
#1 0xff19a57c in ?? ()
#2 0xff375d6c in ?? ()
(gdb) quit
$ gdb /home/snmp/netsnmp/net-snmp/5.2.1/apps/.libs/snmptrapd /home/snmp/snmpc>
GNU gdb 6.0
Copyright 2003 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as
"sparc-sun-solaris2.8".../home/snmp/netsnmp/net-snmp/5.2.1/apps/.libs/snmptrapd:
No such file or directory.
Core was generated by `snmptrapd -f -F
%N|%w%q|%#y%#02m%#02l_%#02.2h%#02.2j%#02.2k|%A|%B|%-v\n -OTausQ'.
Program terminated with signal 11, Segmentation fault.
#0 0xff196054 in ?? ()
(gdb) where
#0 0xff196054 in ?? ()
#1 0xff19a57c in ?? ()
#2 0xff375d6c in ?? ()
(gdb) quit
$ apps/.libs/snmptrapd /home/snmp/snmpcol/bin/core <
GNU gdb 6.0
Copyright 2003 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "sparc-sun-solaris2.8"...
Core was generated by `snmptrapd -f -F
%N|%w%q|%#y%#02m%#02l_%#02.2h%#02.2j%#02.2k|%A|%B|%-v\n -OTausQ'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/local/lib/libnetsnmptrapd.so.5...done.
Loaded symbols for /usr/local/lib/libnetsnmptrapd.so.5
Reading symbols from /usr/local/lib/libnetsnmpagent.so.5...done.
Loaded symbols for /usr/local/lib/libnetsnmpagent.so.5
Reading symbols from /usr/local/lib/libnetsnmpmibs.so.5...done.
Loaded symbols for /usr/local/lib/libnetsnmpmibs.so.5
Reading symbols from /usr/local/lib/libnetsnmphelpers.so.5...done.
Loaded symbols for /usr/local/lib/libnetsnmphelpers.so.5
Reading symbols from /usr/local/lib/libnetsnmp.so.5...done.
Loaded symbols for /usr/local/lib/libnetsnmp.so.5
Reading symbols from /usr/lib/libdl.so.1...done.
Loaded symbols for /usr/lib/libdl.so.1
Reading symbols from /usr/lib/libkvm.so.1...done.
Loaded symbols for /usr/lib/libkvm.so.1
Reading symbols from /usr/local/ssl/lib/libcrypto.so.0.9.7...done.
Loaded symbols for /usr/local/ssl/lib/libcrypto.so.0.9.7
Reading symbols from /usr/lib/libkstat.so.1...done.
Loaded symbols for /usr/lib/libkstat.so.1
Reading symbols from /usr/lib/libelf.so.1...done.
Loaded symbols for /usr/lib/libelf.so.1
Reading symbols from /usr/lib/libm.so.1...done.
Loaded symbols for /usr/lib/libm.so.1
Reading symbols from /usr/lib/libnsl.so.1...done.
Loaded symbols for /usr/lib/libnsl.so.1
Reading symbols from /usr/lib/libsocket.so.1...done.
Loaded symbols for /usr/lib/libsocket.so.1
---Type <return> to continue, or q <return> to quit---
Reading symbols from /usr/lib/libadm.so.1...done.
Loaded symbols for /usr/lib/libadm.so.1
Reading symbols from /usr/lib/libc.so.1...done.
Loaded symbols for /usr/lib/libc.so.1
Reading symbols from /usr/local/lib/libgcc_s.so.1...done.
Loaded symbols for /usr/local/lib/libgcc_s.so.1
Reading symbols from /usr/lib/libmp.so.2...done.
Loaded symbols for /usr/lib/libmp.so.2
Reading symbols from /usr/platform/SUNW,Sun-Fire-880/lib/libc_psr.so.1...done.
Loaded symbols for /usr/platform/SUNW,Sun-Fire-880/lib/libc_psr.so.1
Reading symbols from /usr/lib/nss_files.so.1...done.
Loaded symbols for /usr/lib/nss_files.so.1
Reading symbols from /usr/lib/locale/en_US.ISO8859-15/en_US.ISO8859-15.so.2...
done.
Loaded symbols for /usr/lib/locale/en_US.ISO8859-15/en_US.ISO8859-15.so.2
#0 0xff196054 in sprint_realloc_integer (buf=0xffbeeee8, buf_len=0xffbeeee4,
out_len=0xffbeeee0, allow_realloc=1, var=0x30060, enums=0x0, hint=0x0,
units=0x0) at mib.c:1333
1333 sprintf(str, "%ld", *var->val.integer);
(gdb) print var
$1 = (const netsnmp_variable_list *) 0x30060
(gdb) print *var
$2 = {next_variable = 0x302b8, name = 0x30078, name_length = 10,
type = 5 '\005', val = {integer = 0x0, string = 0x0, objid = 0x0,
bitstring = 0x0, counter64 = 0x0, floatVal = 0x0, doubleVal = 0x0},
val_len = 0, name_loc = {1, 3, 6, 1, 4, 1, 1899, 1, 6, 11, 2065722991,
1851158380, 1635019116, 1696627978, 538976288, 976895264, 2065724270,
1836076655, 1953064569, 1181314164, 1701987694, 1953659168, 874544394,
175337069, 1884188532, 1768323398, 1768715365, 1918005111, 1400136052,
1970479183, 1112163651, 1412256857, 1346701856, 538976339, 1498305601,
1478500384, 538976338, 1870091124, 1635022195, 169877536, 541933912,
759251779, 1163088672, 544367969, 1680696178, 1700885605, 169877536,
542331969, 1414877984, 538976288, 543389042, 1919250036, 169877536,
541345107, 1129466192, 1414090574, 169877536, 538976288, 539120744,
1696625524, 1635022195, 544171552, 1952999795, 543387502, 1667592308,
1969318944, 1919907630, 168435744, 538976288, 538976340, 1864393586,
1700885605, 543236210, 1870078057, 1847620712, 1769152628, 1633840229,
740319520, 1835101793, 1734701600, 1836413812, 169877536, 538976288,
538997605, 1948284008, 1769152623, 1651139939, 1948284015, 543517044,
1751478816, 1668441441, 1952792942, 1682403112, 875110511, 1913266208,
538976288, 538976355, 1919246708, 1698786916, 1466001780, 674572590,
571088928, 538982970, 1025538848, 1936616816, 1315927145, 1719223913,
1819567474, 1164866674, 2032153888, 2097809965, 755641645, 170732832,
1131376230, 1869770081, 1852007712, 1768842863, 1919770996, 1768910346,
757926445, 755632755, 1852665934, 1869900134, 2034462573, 1886153057,
---Type <return> to continue, or q <return> to quit---
1852007795, 542065226, 1162040352},
buf = "\000\000\vĂTIFIER ::=\n", ' ' <repeats 25 times>, data = 0x0,
dataFreeHook = 0, index = 0}
(gdb) print var->val.integer
$3 = (long int *) 0x0
(gdb) print *var->val.integer
Cannot access memory at address 0x0
(gdb)
