RE: netsnmp crash in netsnmp_table_array_ext_data_helper_handler

Hi,
The table_helper_handler is getting called twice and it reaches this
code

    /*
     * if the agent request info has a state reference, then this is a
     * later pass of a set request and we can skip all the lookup stuff.
     *
     * xxx-rks: this might break for handlers which only handle one
varbind
     * at a time... those handlers should not save data by their
handler_name
     * in the netsnmp_agent_request_info.
     */
    if (netsnmp_agent_get_list_data(reqinfo,
handler->next->handler_name)) {
        if (MODE_IS_SET(reqinfo->mode)) {
            return netsnmp_call_next_handler(handler, reginfo, reqinfo,
                                             requests);
        } else {
/** XXX-rks: memory leak. add cleanup handler? */
            netsnmp_free_agent_data_sets(reqinfo);
        }
And in the second pass it is getting cleaned because it is not a set
request ??

Can somebody explain "those handlers should not save data by their
handler_name" in the context of iftable.c handled via
table_array_external_data.c

Thanks in Advance 

Regards
S. Gouri Sankar

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Gouri
Singaraju
Sent: Wednesday, November 30, 2005 5:57 AM
To: [email protected]
Subject: RE: netsnmp crash in
netsnmp_table_array_ext_data_helper_handler

Hi,

First sorry for the copying to both the mail lists. I am running this on
linux. The if implementation is our own both interfaces and ifIndex. I
am using net-snmp-5.1 code and snmpd is linked to the correspondingly
generated netsnmp libraries. 

But the compile machine shows the following even though I am not using
it
[buildcp npsnmp]net-snmp-config --configure-options
--host=i386-redhat-linux --build=i386-redhat-linux
--target=i386-redhat-linux-gnu --program-prefix= --prefix=/usr
--exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin
--sysconfdir=/etc --datadir=/usr/share
--includedir=/usr/include/net-snmp --libdir=/usr/lib
--libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/usr/com
--mandir=/usr/share/man --infodir=/usr/share/info --enable-static
--enable-shared --with-cflags=-O2 -march=i386 -mcpu=i686 -g
--with-sys-location=Unknown --with-logfile=/var/log/snmpd.log
--with-persistent-directory=/var/net-snmp --with-mib-modules=host agentx
smux --with-libwrap=/usr/lib --sysconfdir=/etc --enable-ipv6
--enable-ucd-snmp-compatibility --with-sys-contact=root@localhost
[build npsnmp] net-snmp-config --version
5.0.6 

Regards
S. Gouri Sankar
-----Original Message-----
From: Robert Story [mailto:[email protected]] 
Sent: Tuesday, November 29, 2005 11:42 PM
To: Gouri Singaraju
Cc: [email protected]
Subject: Re: netsnmp crash in
netsnmp_table_array_ext_data_helper_handler

First off, please don't cross post to both lists. Pick on or the other.

On Fri, 25 Nov 2005 15:03:34 +0530 Gouri wrote:
GS> I am getting a crash in 
GS> 
GS> While running snmpgetnext -v 2c -t 240 -n "" -c public 192.168.4.246
GS> ifIndex.256  ifNumber.0

What release are you using? What OS? Is this out if-mib implementation,
or
your own?

-- 
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>  
Archive:
<http://sourceforge.net/mailarchive/forum.php?forum=net-snmp-users>

You are lost in a twisty maze of little standards, all different. 



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