net-snmp-coders — Discussion of internal project coding (Please use this OR -users, NOT both!)

NET-SNMP Installation Question_

[Peck, I. A <Ian...@gd...>]

For the NET-SNMP installation is there any prerequisite SW that needs to be installed? For instance do I need visual studio installed before I try to install and use NET-SNMP?

Thank you,
Ian Peck
NWS Advance System Engineer
General Dynamics Mission Systems
100 Plastics Ave, Pittsfield, MA
Work 413-494-7420
Email Ian...@gd...<mailto:Ian...@gd...>
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Re: snmp agent responds to v3 requests and v2c only requests

[Larry H. <lh...@gm...>]

You should be able to do what you have laid out.
Here is a possible starting point.

To restrict who can access SNMP and what community string they use:
com2sec <sec name> IP/CIDR <community string>

   For example:  com2sec  mysec 10.10.10.0/24 'my_string'
      all access from any IP on that subnet to get specific IP:
10.10.10.10/32

To Control Access to OIDs, I would use VACM approach

#     group.name    model sec.name
group RWGroup      v2c   mysec

# create a view and set what can and cannot be accessed
view rwView       included  .1                      80
view rwView       excluded  .1.3.6.1.4.1.2021       fe
view rwView       excluded  .1.3.6.1.4.1.8072       fe


#                    context model sec.level match read.view write.view
notif
access RWGroup      ""      v2c   noauth    exact rwView    rwView none

On Tue, Jan 14, 2020 at 12:55 AM Nagarjun G <nag...@gm...>
wrote:

> Hi All,
>
> We have been using net-snmp to manage our devices. We have a new
> requirement now which is described below.
>
> My current configuration is as below :
> I have an snmp agent which can be configured to run any version(v1/v2c/v3)
> of snmp.
> We are currently accessing the snmp agent through mib browser.
> This has been there quite very long.
>
> Recent requirement  :
> There is another snmp manager which will access our snmp agent using only
> snmpv2c which will have access to very limited OID's.
>
> What I need to achieve is:
> I need to make my snmp agent respond to two different snmp managers, one
> responding to v1/v2c/v3 requests and
> another responding to only v2 requests with having limited access to few
> OID's.
>
> Is it possible to achieve the above configuration ?
> what type of access control configuration is needed ?
>
> Regards
> Nagarjun
> _______________________________________________
> Net-snmp-coders mailing list
> Net...@li...
> https://lists.sourceforge.net/lists/listinfo/net-snmp-coders
>

Re: New release of net-snmp

[Hugh M. <hug...@ou...>]

Hi Wes,

On Tue, 3 Sep 2019 at 06:07, Wes Hardaker wrote:
> Actually, it was my job to release a 5.8.1.pre1 on Friday.
Any news on the next pre-release, release candidate or full release
timeline?

Thanks,

Hugh

snmp agent responds to v3 requests and v2c only requests

[Nagarjun G <nag...@gm...>]

Hi All,

We have been using net-snmp to manage our devices. We have a new
requirement now which is described below.

My current configuration is as below :
I have an snmp agent which can be configured to run any version(v1/v2c/v3)
of snmp.
We are currently accessing the snmp agent through mib browser.
This has been there quite very long.

Recent requirement  :
There is another snmp manager which will access our snmp agent using only
snmpv2c which will have access to very limited OID's.

What I need to achieve is:
I need to make my snmp agent respond to two different snmp managers, one
responding to v1/v2c/v3 requests and
another responding to only v2 requests with having limited access to few
OID's.

Is it possible to achieve the above configuration ?
what type of access control configuration is needed ?

Regards
Nagarjun

Re: How to install Net snmp on MACos

[Zlatko A. <zla...@gm...>]

Hi Nadia,

You can install it from ports.

https://www.macports.org/

BR,

Zlatko

On 29.12.19 22:01, Nadia MENAD wrote:
> Dear  Net-snmp Team ,
>
>
> I would like to know if there is any way to install net snmp in my macos,
> Could you please inform me about this n
>
>
> Thanks in advance,
>
> Nadia MENAD,
>
>
> _______________________________________________
> Net-snmp-coders mailing list
> Net...@li...
> https://lists.sourceforge.net/lists/listinfo/net-snmp-coders

Re: How to install Net snmp on MACos

[Sam T. <sta...@cu...>]

Hi Nadia,

It's already there.  Is version 5.6.2.1 not current enough? ;-)


$ which snmpd
/usr/sbin/snmpd
$ snmpd -v
waiting for the network

NET-SNMP version:  5.6.2.1
Web:               http://www.net-snmp.org/
Email:             net...@li...


--Sam


On Thu, Jan 2, 2020 at 8:56 AM Nadia MENAD <nad...@gm...> wrote:

> Dear  Net-snmp Team ,
>
>
> I would like to know if there is any way to install net snmp in my macos,
> Could you please inform me about this n
>
>
> Thanks in advance,
>
> Nadia MENAD,
>
>
> _______________________________________________
> Net-snmp-coders mailing list
> Net...@li...
> https://lists.sourceforge.net/lists/listinfo/net-snmp-coders
>

Re: NET-SNMP-5.8

[Bart V. A. <bva...@ac...>]

On 2019-12-30 02:39, Seyfullah BECERİKLİ wrote:
> We have some issues installing net-snmp-5.8 version. Do you have any
> specific installation guide for it?

Hi Seyfullah,

How about installing v5.8.1.pre1 instead of v5.8? A large number of bugs
has been fixed in v5.8.1.pre1. That version is available at
https://github.com/net-snmp/net-snmp/archive/V5-8-patches.zip.

Bart.

NET-SNMP-5.8

[Seyfullah B. <sey...@ct...>]

Hello,

We have some issues installing net-snmp-5.8 version. Do you have any specific installation guide for it?

Thanks

Saygilarimizla – Best Regards,
Seyfullah BECERİKLİ
Yazılım Mühendisi
Mühendislik ve Tasarım Direktörlüğü
[cid:image001.png@01D5BF16.87E97F30]
T T +90-850 4807744 / Ext:161 / F +90-216-2905288 /  / sey...@ct...
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How to install Net snmp on MACos

[Nadia M. <nad...@gm...>]

Dear  Net-snmp Team ,


I would like to know if there is any way to install net snmp in my macos,
Could you please inform me about this n


Thanks in advance,

Nadia MENAD,

Re: Finding mib2c

[Larry H. <lh...@gm...>]

If you extracted the tarball, then you can find it in the local directory.
If you have installed it on your system (assuming a make install was done)
/usr/local/bin/mib2c

At least that is where it is on my Ubuntu install.


On Tue, Dec 17, 2019 at 9:53 AM Philip Rowe <phi...@ne...>
wrote:

> Hello,
>
>
>
> I am wanting to use mib2c to generate some skeleton code for an SNMP
> subagent.
>
> But I do not seem to be able to find the script anywhere.
>
>
>
> I am using Net-SNMP 5.7.3, cross compiled to run on BusyBox.
>
>
>
> Philip Rowe
>
> *Software Engineer*
>
>
>
> *Email:* *phi...@ne... <phi...@ne...>*
>
> *Tel:* *+44 3450 130 030 <+44-3450-130-030> Ext. 6935*
>
> *Web:* *http://www.Net2Edge.com/ <http://www.net2edge.com/>*
>
> *Kulite House, Stroudley Road, Basingstoke, Hampshire RG24 8UG*
>
>
>
>
>
> [image: Net2Edge Logo]
>
> Your privacy is important to Net2Edge, and we continuously commit to
> complying with the applicable data protection laws, and to ensure fair and
> transparent processing of your personal data. Please read our privacy
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> Net2Edge Limited is a company registered in England & Wales (Company No.
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Finding mib2c

[Philip R. <phi...@ne...>]

Hello,

I am wanting to use mib2c to generate some skeleton code for an SNMP subagent.
But I do not seem to be able to find the script anywhere.

I am using Net-SNMP 5.7.3, cross compiled to run on BusyBox.

Philip Rowe
Software Engineer

Email: phi...@ne...<mailto:phi...@ne...>
Tel: +44 3450 130 030<tel:+44-3450-130-030> Ext. 6935
Web: http://www.Net2Edge.com/<http://www.net2edge.com/>
Kulite House, Stroudley Road, Basingstoke, Hampshire RG24 8UG


[Net2Edge Logo]
Your privacy is important to Net2Edge, and we continuously commit to complying with the applicable data protection laws, and to ensure fair and transparent processing of your personal data. Please read our privacy statement including an information notice and data protection policy on our website. If you no longer wish to be contacted by Net2Edge, please reply to this email replacing the subject line with 'Remove'.
Net2Edge Limited is a company registered in England & Wales (Company No. 2438435, VAT No. GB 537553821) Kulite House, Stroudley Road, Basingstoke, Hampshire, RG24 8UG, UK. This email transmission is confidential and intended solely for the person or organisation to whom it is addressed. If you are not the intended recipient, you must not copy, distribute or disseminate the information, or take any action in reliance of it. Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the views of any organisation or employer. If you have received this message in error, do not open any attachment but please notify the sender (above) and delete this message from your system. Please rely on your own virus check. Although all outbound mail is checked for viruses, no responsibility is taken by the sender for any damage arising out of any bug or virus infection.

Agentx Timeout no response

[Philippe D. <phd...@gm...>]

Hello all,

I've a problem to communicate with my agentx.
I've set the MIBS environment variable by typing 'export MIBS=ALL'

First, I write a small mib containing 2 objects (counter1 and counters2).
Thanks to the mib2c tool, i've generated the C code and update the data
needed.
I follow all the steps needed in order to configure the master agent, make
and make install.
All these steps succeeded and through another console I was able to send
'snmpget' command and get an answer.

Following this, I've created a daemon by following the tutorial on site
'Writing a subagent'.
My daemon is working, I've compiled it and see that the reading of the
shared memory is done every time a value is updated in the shared memory.

To launch the snmpd, I use the following command line:
snmpd -Dagentx -f -Lo -C -c /usr/local/share/snmpd.conf
--agentXSocket=tcp:localhost:1705 udp:1161

registered debug token agentx, 1
Log handling defined - disabling stderr
agentx_register_app_config_handler: registering .conf token for
"agentxsocket"
agentx_register_app_config_handler: registering .conf token for
"agentxperms"
agentx_register_app_config_handler: registering .conf token for
"agentxRetries"
agentx_register_app_config_handler: registering .conf token for
"agentxTimeout"
Turning on AgentX master support.
agentx/config: port spec: /var/agentx/master
agentx/config: port permissions: 777 777
agentx/config: socket permissions: 777 (511)
agentx/config: directory permissions: 777 (511)
agentx/config: port spec: tcp:localhost:1705
agentx/master: initializing...
agentx/master: initializing...   DONE
NET-SNMP version 5.

See below the content of the snmpd.conf located in
/usr/local/share/snmpd.conf

master agentx
agentxsocket /var/agentx/master
agentxperms 777 777

rocommunity MyComRO
rwcommunity MyComRW
syscontact su...@co...
syslocation 1st Floor / Town / Country

com2sec readonly default public
com2sec readwrite default private
rocommunity public
rwcommunity private

I've checked, I haven't a snmpd.conf file in /etc/snmp.

I'm quite lost, it looks that snmpd is not correctly configured.
Moreover, I don't really understand, why when I'm typing the following
command, snmpget -v 2c -c MyComRO localhost system.sysLocation.0
I've also a "Timeout:no response from localhost".

I've also checked that the Shared Memory is correctly created and available.

Do you have any clue in order to debug it or to understand what is not
correctly configured ?

By advance thanks for your help.
-- 
Best Regards.
Phil

Re: HEX- String instead of Octet - String - incase of inetAddress

[Niels B. <nb...@us...>]

On Tue, Dec 03, 2019 at 04:45:30PM +0000, Bek, Anshul wrote:
> 
> For 9.9.156.1.1.2.1.7.1 and 9.9.156.1.1.2.1.7.2, its basically an InetAddress.
> 
> I have 2 queries:
> 
> 
>   1.  Is there any way to get only these 2 InetAddress as Hex-string. I can see that  in sprint_realloc_octet_string() in snmplib/mib.c involves in sprinting OCTET STRINGS for snmpgets and walks. Is there any value to check ? Also  hints, enums and units passed in NULL.
>   2.  Why is the IP display in this manner ie. each octet in ascii . Is it by default ?
> 
> Note:- I don't want to use -Ox option as this will display all the strings value in Hex.

They are display that way because Cisco intended this to be a host name
and then it makes sense that it is a string.

They are defined like this

$ snmptranslate -Td -m ALL SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.2.1
CISCO-CCM-MIB::ccmName.1
ccmName OBJECT-TYPE
  -- FROM	CISCO-CCM-MIB
  -- TEXTUAL CONVENTION SnmpAdminString
  SYNTAX	OCTET STRING (0..128) 
  DISPLAY-HINT	"255t"
  MAX-ACCESS	read-only
  STATUS	current
  DESCRIPTION	"The host name of the CallManager."
::= { iso(1) org(3) dod(6) internet(1) private(4)
      enterprises(1) cisco(9) ciscoMgmt(9) ciscoCcmMIB(156)
      ciscoCcmMIBObjects(1) ccmGeneralInfo(1) ccmTable(2)
      ccmEntry(1) ccmName(2) 1 }
	      
/Niels

-- 
Niels Baggesen - @home - Århus - Denmark - nb...@us...
The purpose of computing is insight, not numbers   ---   R W Hamming

HEX- String instead of Octet - String - incase of inetAddress

[Bek, A. <Ans...@ha...>]

Hi ,

Below is the output of snmpwalk:

[root@cucm-12-5-1-pub<mailto:root@cucm-12-5-1-pub> ~]# snmpwalk -c test -v2c localhost 1.3.6.1.4.1.9.9.156.1.1.2
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.2.1 = STRING: "10.63.37.50"
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.2.2 = STRING: "10.63.37.51"
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.3.1 = STRING: "mycoll-12-5-1-pub"
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.3.2 = STRING: "mycoll-12-5-1-sub"
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.4.1 = STRING: "12.5.1.11900-146"
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.4.2 = STRING: "UNKNOWN"
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.5.1 = INTEGER: 2
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.5.2 = INTEGER: 2
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.6.1 = INTEGER: 1
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.6.2 = INTEGER: 1
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.7.1 = STRING: "
?%2"
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.7.2 = STRING: "
?%3"
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.8.1 = STRING: "MYCOLL50"
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.8.2 = STRING: "MYCOLL50"
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.9.1 = INTEGER: 2
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.9.2 = INTEGER: 2
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.10.1 = ""


For 9.9.156.1.1.2.1.7.1 and 9.9.156.1.1.2.1.7.2, its basically an InetAddress.

I have 2 queries:


  1.  Is there any way to get only these 2 InetAddress as Hex-string. I can see that  in sprint_realloc_octet_string() in snmplib/mib.c involves in sprinting OCTET STRINGS for snmpgets and walks. Is there any value to check ? Also  hints, enums and units passed in NULL.
  2.  Why is the IP display in this manner ie. each octet in ascii . Is it by default ?

Note:- I don't want to use -Ox option as this will display all the strings value in Hex.

Regards,
Anshul Bek

Re: Net-SNMP crash when AgentX SubAgent times out

[David M. (dmoricon) <dmo...@ci...>]

Thank you for the clarification.

From: Anders Wallin <wal...@gm...>
Date: Monday, December 2, 2019 at 12:18 PM
To: "David Moriconi (dmoricon)" <dmo...@ci...>
Cc: "net...@li..." <net...@li...>
Subject: Re: Net-SNMP crash when AgentX SubAgent times out

Hi David,

I'm just a user of net-snmp that sometimes provides fixes to bugs and I don't know the release schedule for 5.8.1

Regards
Anders Wallin


On Mon, Dec 2, 2019 at 6:12 PM David Moriconi (dmoricon) <dmo...@ci...<mailto:dmo...@ci...>> wrote:
Hi Anders,
Unfortunately we cannot take the latest code like this since it is part of our product and we prefer to use an official stable release. That’s why I would like to know if there is a plan to release a stable version soon.

Thank you,
David

From: "David Moriconi (dmoricon) via Net-snmp-coders" <net...@li...<mailto:net...@li...>>
Reply-To: "David Moriconi (dmoricon)" <dmo...@ci...<mailto:dmo...@ci...>>
Date: Thursday, November 28, 2019 at 8:27 AM
To: Anders Wallin <wal...@gm...<mailto:wal...@gm...>>
Cc: "net...@li...<mailto:net...@li...>" <net...@li...<mailto:net...@li...>>
Subject: Re: Net-SNMP crash when AgentX SubAgent times out

Hi Anders,
Thank you for your response

Do you know if a newer version will be released soon with the fix?

David

From: Anders Wallin <wal...@gm...<mailto:wal...@gm...>>
Date: Wednesday, November 27, 2019 at 4:40 PM
To: "David Moriconi (dmoricon)" <dmo...@ci...<mailto:dmo...@ci...>>
Cc: "net...@li...<mailto:net...@li...>" <net...@li...<mailto:net...@li...>>
Subject: Re: Net-SNMP crash when AgentX SubAgent times out

Hi David,

yes there are a few patches that fixes this issue, I suggest the you use the latest code from gi...@gi...:net-snmp/net-snmp.git

Regards
Anders Wallin


On Wed, Nov 27, 2019 at 10:17 PM David Moriconi (dmoricon) via Net-snmp-coders <net...@li...<mailto:net...@li...>> wrote:
Hi,
I am using Net-SNMP version 5.8 on CentOS 6.8 as a master agent with an AgentX SubAgent.

When my AgentX SubAgent takes too much time to respond and times out, the Net-SNMP daemon crashes. I have searched for this issue and found https://github.com/net-snmp/net-snmp/commit/793d596838ff7cb48a73b675d62897c56c9e62df but this seems to be already included in version 5.8.

Is this a known issue? Is it already patched? If so, where can I find the patch?

Here is the crash dump that I have in my log when this happens:
Unknown operation 6 in agentx_got_response
*** glibc detected *** /usr/local/netsnmp/netsnmp_base/sbin/snmpd: malloc(): smallbin double linked list corrupted: 0x00005603745c4110 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x3a24675e5e)[0x7fc9d5d72e5e]
/lib64/libc.so.6(+0x3a2467a528)[0x7fc9d5d77528]
/lib64/libc.so.6(__libc_malloc+0x5c)[0x7fc9d5d77b1c]
/lib64/libc.so.6(vasprintf+0x140)[0x7fc9d5d6c340]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_vlog+0x42)[0x7fc9d709ea9c]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_log+0xb9)[0x7fc9d709ebb3]
/usr/local/netsnmp/5.8/lib/libnetsnmpagent.so.35(agentx_got_response+0x669)[0x7fc9d78e2586]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(+0x5778c)[0x7fc9d707c78c]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_sess_timeout+0x2a5)[0x7fc9d707ca54]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_timeout+0x33)[0x7fc9d707c0f0]
/usr/local/netsnmp/netsnmp_base/sbin/snmpd(+0x5081)[0x5603723c3081]
/usr/local/netsnmp/netsnmp_base/sbin/snmpd(main+0x19b8)[0x5603723c28ac]
/lib64/libc.so.6(__libc_start_main+0x100)[0x7fc9d5d1bd20]
/usr/local/netsnmp/netsnmp_base/sbin/snmpd(+0x2b79)[0x5603723c0b79]
======= Memory map: ========
5603723be000-5603723c5000 r-xp 00000000 fc:05 405833                     /usr/local/netsnmp/5.8/sbin/snmpd
5603725c4000-5603725c5000 r--p 00006000 fc:05 405833                     /usr/local/netsnmp/5.8/sbin/snmpd
5603725c5000-5603725c6000 rw-p 00007000 fc:05 405833                     /usr/local/netsnmp/5.8/sbin/snmpd
56037444d000-5603745ee000 rw-p 00000000 00:00 0                          [heap]
7fc9c8000000-7fc9c8021000 rw-p 00000000 00:00 0
7fc9c8021000-7fc9cc000000 ---p 00000000 00:00 0
7fc9ceeaa000-7fc9ceec0000 r-xp 00000000 fc:05 1315920                    /lib64/libgcc_s-4.4.7-20120601.so.1
7fc9ceec0000-7fc9cf0bf000 ---p 00016000 fc:05 1315920                    /lib64/libgcc_s-4.4.7-20120601.so.1
7fc9cf0bf000-7fc9cf0c0000 rw-p 00015000 fc:05 1315920                    /lib64/libgcc_s-4.4.7-20120601.so.1
7fc9cf0c0000-7fc9cf0cd000 r-xp 00000000 fc:05 1310749                    /lib64/libnss_files-2.12.so<http://libnss_files-2.12.so>
7fc9cf0cd000-7fc9cf2cc000 ---p 0000d000 fc:05 1310749                    /lib64/libnss_files-2.12.so<http://libnss_files-2.12.so>
7fc9cf2cc000-7fc9cf2cd000 r--p 0000c000 fc:05 1310749                    /lib64/libnss_files-2.12.so<http://libnss_files-2.12.so>
7fc9cf2cd000-7fc9cf2ce000 rw-p 0000d000 fc:05 1310749                    /lib64/libnss_files-2.12.so<http://libnss_files-2.12.so>
7fc9cf2ce000-7fc9d5163000 r--p 00000000 fc:05 402284                     /usr/lib/locale/locale-archive
7fc9d5163000-7fc9d5165000 r-xp 00000000 fc:05 1315924                    /lib64/libfreebl3.so
7fc9d5165000-7fc9d5364000 ---p 00002000 fc:05 1315924                    /lib64/libfreebl3.so
7fc9d5364000-7fc9d5365000 r--p 00001000 fc:05 1315924                    /lib64/libfreebl3.so
7fc9d5365000-7fc9d5366000 rw-p 00002000 fc:05 1315924                    /lib64/libfreebl3.so
7fc9d5366000-7fc9d53e9000 r-xp 00000000 fc:05 1315917                    /lib64/libm-2.12.so<http://libm-2.12.so>
7fc9d53e9000-7fc9d55e8000 ---p 00083000 fc:05 1315917                    /lib64/libm-2.12.so<http://libm-2.12.so>
7fc9d55e8000-7fc9d55e9000 r--p 00082000 fc:05 1315917                    /lib64/libm-2.12.so<http://libm-2.12.so>
7fc9d55e9000-7fc9d55ea000 rw-p 00083000 fc:05 1315917                    /lib64/libm-2.12.so<http://libm-2.12.so>
7fc9d55ea000-7fc9d58c5000 r-xp 00000000 fc:05 403870                     /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0
7fc9d58c5000-7fc9d5ac4000 ---p 002db000 fc:05 403870                     /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0
7fc9d5ac4000-7fc9d5ae3000 r--p 002da000 fc:05 403870                     /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0


Thank you,


[http://www.cisco.com/c/dam/m/en_us/signaturetool/images/banners/standard/09_standard_graphic.png]
David Moriconi
Software Engineer
dmo...@ci...<mailto:dmo...@ci...>
Tel: 5143333808
Cisco Systems Canada Co. / Les Systemes Cisco Canada CIE
Cisco.com<http://www.cisco.com/web/CA/>
[http://www.cisco.com/assets/swa/img/thinkbeforeyouprint.gif]
Think before you print.
This email may contain confidential and privileged material for the sole use of the intended recipient. Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient (or authorized to receive for the recipient), please contact the sender by reply email and delete all copies of this message.
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Re: Net-SNMP crash when AgentX SubAgent times out

[Anders W. <wal...@gm...>]

Hi David,

I'm just a user of net-snmp that sometimes provides fixes to bugs and I
don't know the release schedule for 5.8.1

Regards
Anders Wallin


On Mon, Dec 2, 2019 at 6:12 PM David Moriconi (dmoricon) <dmo...@ci...>
wrote:

> Hi Anders,
>
> Unfortunately we cannot take the latest code like this since it is part of
> our product and we prefer to use an official stable release. That’s why I
> would like to know if there is a plan to release a stable version soon.
>
>
>
> Thank you,
>
> David
>
>
>
> *From: *"David Moriconi (dmoricon) via Net-snmp-coders" <
> net...@li...>
> *Reply-To: *"David Moriconi (dmoricon)" <dmo...@ci...>
> *Date: *Thursday, November 28, 2019 at 8:27 AM
> *To: *Anders Wallin <wal...@gm...>
> *Cc: *"net...@li..." <
> net...@li...>
> *Subject: *Re: Net-SNMP crash when AgentX SubAgent times out
>
>
>
> Hi Anders,
>
> Thank you for your response
>
>
>
> Do you know if a newer version will be released soon with the fix?
>
>
>
> David
>
>
>
> *From: *Anders Wallin <wal...@gm...>
> *Date: *Wednesday, November 27, 2019 at 4:40 PM
> *To: *"David Moriconi (dmoricon)" <dmo...@ci...>
> *Cc: *"net...@li..." <
> net...@li...>
> *Subject: *Re: Net-SNMP crash when AgentX SubAgent times out
>
>
>
> Hi David,
>
>
>
> yes there are a few patches that fixes this issue, I suggest the you use
> the latest code from gi...@gi...:net-snmp/net-snmp.git
>
>
>
> Regards
>
> Anders Wallin
>
>
>
>
>
> On Wed, Nov 27, 2019 at 10:17 PM David Moriconi (dmoricon) via
> Net-snmp-coders <net...@li...> wrote:
>
> Hi,
>
> I am using Net-SNMP version 5.8 on CentOS 6.8 as a master agent with an
> AgentX SubAgent.
>
>
>
> When my AgentX SubAgent takes too much time to respond and times out, the
> Net-SNMP daemon crashes. I have searched for this issue and found
> https://github.com/net-snmp/net-snmp/commit/793d596838ff7cb48a73b675d62897c56c9e62df
> but this seems to be already included in version 5.8.
>
>
>
> Is this a known issue? Is it already patched? If so, where can I find the
> patch?
>
>
>
> Here is the crash dump that I have in my log when this happens:
>
> Unknown operation 6 in agentx_got_response
>
> *** glibc detected *** /usr/local/netsnmp/netsnmp_base/sbin/snmpd:
> malloc(): smallbin double linked list corrupted: 0x00005603745c4110 ***
>
> ======= Backtrace: =========
>
> /lib64/libc.so.6(+0x3a24675e5e)[0x7fc9d5d72e5e]
>
> /lib64/libc.so.6(+0x3a2467a528)[0x7fc9d5d77528]
>
> /lib64/libc.so.6(__libc_malloc+0x5c)[0x7fc9d5d77b1c]
>
> /lib64/libc.so.6(vasprintf+0x140)[0x7fc9d5d6c340]
>
> /usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_vlog+0x42)[0x7fc9d709ea9c]
>
> /usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_log+0xb9)[0x7fc9d709ebb3]
>
>
> /usr/local/netsnmp/5.8/lib/libnetsnmpagent.so.35(agentx_got_response+0x669)[0x7fc9d78e2586]
>
> /usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(+0x5778c)[0x7fc9d707c78c]
>
>
> /usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_sess_timeout+0x2a5)[0x7fc9d707ca54]
>
>
> /usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_timeout+0x33)[0x7fc9d707c0f0]
>
> /usr/local/netsnmp/netsnmp_base/sbin/snmpd(+0x5081)[0x5603723c3081]
>
> /usr/local/netsnmp/netsnmp_base/sbin/snmpd(main+0x19b8)[0x5603723c28ac]
>
> /lib64/libc.so.6(__libc_start_main+0x100)[0x7fc9d5d1bd20]
>
> /usr/local/netsnmp/netsnmp_base/sbin/snmpd(+0x2b79)[0x5603723c0b79]
>
> ======= Memory map: ========
>
> 5603723be000-5603723c5000 r-xp 00000000 fc:05 405833
>                     /usr/local/netsnmp/5.8/sbin/snmpd
>
> 5603725c4000-5603725c5000 r--p 00006000 fc:05 405833
> /usr/local/netsnmp/5.8/sbin/snmpd
>
> 5603725c5000-5603725c6000 rw-p 00007000 fc:05 405833
> /usr/local/netsnmp/5.8/sbin/snmpd
>
> 56037444d000-5603745ee000 rw-p 00000000 00:00 0
> [heap]
>
> 7fc9c8000000-7fc9c8021000 rw-p 00000000 00:00 0
>
> 7fc9c8021000-7fc9cc000000 ---p 00000000 00:00 0
>
> 7fc9ceeaa000-7fc9ceec0000 r-xp 00000000 fc:05 1315920
>      /lib64/libgcc_s-4.4.7-20120601.so.1
>
> 7fc9ceec0000-7fc9cf0bf000 ---p 00016000 fc:05 1315920
> /lib64/libgcc_s-4.4.7-20120601.so.1
>
> 7fc9cf0bf000-7fc9cf0c0000 rw-p 00015000 fc:05 1315920
> /lib64/libgcc_s-4.4.7-20120601.so.1
>
> 7fc9cf0c0000-7fc9cf0cd000 r-xp 00000000 fc:05 1310749
> /lib64/libnss_files-2.12.so
>
> 7fc9cf0cd000-7fc9cf2cc000 ---p 0000d000 fc:05 1310749
> /lib64/libnss_files-2.12.so
>
> 7fc9cf2cc000-7fc9cf2cd000 r--p 0000c000 fc:05 1310749
> /lib64/libnss_files-2.12.so
>
> 7fc9cf2cd000-7fc9cf2ce000 rw-p 0000d000 fc:05 1310749
> /lib64/libnss_files-2.12.so
>
> 7fc9cf2ce000-7fc9d5163000 r--p 00000000 fc:05 402284
>                    /usr/lib/locale/locale-archive
>
> 7fc9d5163000-7fc9d5165000 r-xp 00000000 fc:05 1315924
> /lib64/libfreebl3.so
>
> 7fc9d5165000-7fc9d5364000 ---p 00002000 fc:05 1315924
> /lib64/libfreebl3.so
>
> 7fc9d5364000-7fc9d5365000 r--p 00001000 fc:05 1315924
> /lib64/libfreebl3.so
>
> 7fc9d5365000-7fc9d5366000 rw-p 00002000 fc:05 1315924
> /lib64/libfreebl3.so
>
> 7fc9d5366000-7fc9d53e9000 r-xp 00000000 fc:05 1315917
> /lib64/libm-2.12.so
>
> 7fc9d53e9000-7fc9d55e8000 ---p 00083000 fc:05 1315917
> /lib64/libm-2.12.so
>
> 7fc9d55e8000-7fc9d55e9000 r--p 00082000 fc:05 1315917
> /lib64/libm-2.12.so
>
> 7fc9d55e9000-7fc9d55ea000 rw-p 00083000 fc:05 1315917
>           /lib64/libm-2.12.so
>
> 7fc9d55ea000-7fc9d58c5000 r-xp 00000000 fc:05 403870
> /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0
>
> 7fc9d58c5000-7fc9d5ac4000 ---p 002db000 fc:05 403870
> /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0
>
> 7fc9d5ac4000-7fc9d5ae3000 r--p 002da000 fc:05 403870
> /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0
>
>
>
>
>
> Thank you,
>
>
>
>
>
> [image:
> http://www.cisco.com/c/dam/m/en_us/signaturetool/images/banners/standard/09_standard_graphic.png]
>
> *David Moriconi*
>
> Software Engineer
>
> dmo...@ci...
>
> Tel: *5143333808*
>
> Cisco Systems Canada Co. / Les Systemes Cisco Canada CIE
>
> Cisco.com <http://www.cisco.com/web/CA/>
>
> [image: http://www.cisco.com/assets/swa/img/thinkbeforeyouprint.gif]
>
> Think before you print.
>
> This email may contain confidential and privileged material for the sole
> use of the intended recipient. Any review, use, distribution or disclosure
> by others is strictly prohibited. If you are not the intended recipient (or
> authorized to receive for the recipient), please contact the sender by
> reply email and delete all copies of this message.
>
> Please click here
> <http://www.cisco.com/c/en/us/about/legal/terms-sale-software-license-agreement/company-registration-information.html>
> for Company Registration Information.
>
>
>
>
>
> _______________________________________________
> Net-snmp-coders mailing list
> Net...@li...
> https://lists.sourceforge.net/lists/listinfo/net-snmp-coders
>
>

Re: Net-SNMP crash when AgentX SubAgent times out

[David M. (dmoricon) <dmo...@ci...>]

Hi Anders,
Unfortunately we cannot take the latest code like this since it is part of our product and we prefer to use an official stable release. That’s why I would like to know if there is a plan to release a stable version soon.

Thank you,
David

From: "David Moriconi (dmoricon) via Net-snmp-coders" <net...@li...>
Reply-To: "David Moriconi (dmoricon)" <dmo...@ci...>
Date: Thursday, November 28, 2019 at 8:27 AM
To: Anders Wallin <wal...@gm...>
Cc: "net...@li..." <net...@li...>
Subject: Re: Net-SNMP crash when AgentX SubAgent times out

Hi Anders,
Thank you for your response

Do you know if a newer version will be released soon with the fix?

David

From: Anders Wallin <wal...@gm...>
Date: Wednesday, November 27, 2019 at 4:40 PM
To: "David Moriconi (dmoricon)" <dmo...@ci...>
Cc: "net...@li..." <net...@li...>
Subject: Re: Net-SNMP crash when AgentX SubAgent times out

Hi David,

yes there are a few patches that fixes this issue, I suggest the you use the latest code from gi...@gi...:net-snmp/net-snmp.git

Regards
Anders Wallin


On Wed, Nov 27, 2019 at 10:17 PM David Moriconi (dmoricon) via Net-snmp-coders <net...@li...<mailto:net...@li...>> wrote:
Hi,
I am using Net-SNMP version 5.8 on CentOS 6.8 as a master agent with an AgentX SubAgent.

When my AgentX SubAgent takes too much time to respond and times out, the Net-SNMP daemon crashes. I have searched for this issue and found https://github.com/net-snmp/net-snmp/commit/793d596838ff7cb48a73b675d62897c56c9e62df but this seems to be already included in version 5.8.

Is this a known issue? Is it already patched? If so, where can I find the patch?

Here is the crash dump that I have in my log when this happens:
Unknown operation 6 in agentx_got_response
*** glibc detected *** /usr/local/netsnmp/netsnmp_base/sbin/snmpd: malloc(): smallbin double linked list corrupted: 0x00005603745c4110 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x3a24675e5e)[0x7fc9d5d72e5e]
/lib64/libc.so.6(+0x3a2467a528)[0x7fc9d5d77528]
/lib64/libc.so.6(__libc_malloc+0x5c)[0x7fc9d5d77b1c]
/lib64/libc.so.6(vasprintf+0x140)[0x7fc9d5d6c340]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_vlog+0x42)[0x7fc9d709ea9c]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_log+0xb9)[0x7fc9d709ebb3]
/usr/local/netsnmp/5.8/lib/libnetsnmpagent.so.35(agentx_got_response+0x669)[0x7fc9d78e2586]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(+0x5778c)[0x7fc9d707c78c]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_sess_timeout+0x2a5)[0x7fc9d707ca54]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_timeout+0x33)[0x7fc9d707c0f0]
/usr/local/netsnmp/netsnmp_base/sbin/snmpd(+0x5081)[0x5603723c3081]
/usr/local/netsnmp/netsnmp_base/sbin/snmpd(main+0x19b8)[0x5603723c28ac]
/lib64/libc.so.6(__libc_start_main+0x100)[0x7fc9d5d1bd20]
/usr/local/netsnmp/netsnmp_base/sbin/snmpd(+0x2b79)[0x5603723c0b79]
======= Memory map: ========
5603723be000-5603723c5000 r-xp 00000000 fc:05 405833                     /usr/local/netsnmp/5.8/sbin/snmpd
5603725c4000-5603725c5000 r--p 00006000 fc:05 405833                     /usr/local/netsnmp/5.8/sbin/snmpd
5603725c5000-5603725c6000 rw-p 00007000 fc:05 405833                     /usr/local/netsnmp/5.8/sbin/snmpd
56037444d000-5603745ee000 rw-p 00000000 00:00 0                          [heap]
7fc9c8000000-7fc9c8021000 rw-p 00000000 00:00 0
7fc9c8021000-7fc9cc000000 ---p 00000000 00:00 0
7fc9ceeaa000-7fc9ceec0000 r-xp 00000000 fc:05 1315920                    /lib64/libgcc_s-4.4.7-20120601.so.1
7fc9ceec0000-7fc9cf0bf000 ---p 00016000 fc:05 1315920                    /lib64/libgcc_s-4.4.7-20120601.so.1
7fc9cf0bf000-7fc9cf0c0000 rw-p 00015000 fc:05 1315920                    /lib64/libgcc_s-4.4.7-20120601.so.1
7fc9cf0c0000-7fc9cf0cd000 r-xp 00000000 fc:05 1310749                    /lib64/libnss_files-2.12.so<http://libnss_files-2.12.so>
7fc9cf0cd000-7fc9cf2cc000 ---p 0000d000 fc:05 1310749                    /lib64/libnss_files-2.12.so<http://libnss_files-2.12.so>
7fc9cf2cc000-7fc9cf2cd000 r--p 0000c000 fc:05 1310749                    /lib64/libnss_files-2.12.so<http://libnss_files-2.12.so>
7fc9cf2cd000-7fc9cf2ce000 rw-p 0000d000 fc:05 1310749                    /lib64/libnss_files-2.12.so<http://libnss_files-2.12.so>
7fc9cf2ce000-7fc9d5163000 r--p 00000000 fc:05 402284                     /usr/lib/locale/locale-archive
7fc9d5163000-7fc9d5165000 r-xp 00000000 fc:05 1315924                    /lib64/libfreebl3.so
7fc9d5165000-7fc9d5364000 ---p 00002000 fc:05 1315924                    /lib64/libfreebl3.so
7fc9d5364000-7fc9d5365000 r--p 00001000 fc:05 1315924                    /lib64/libfreebl3.so
7fc9d5365000-7fc9d5366000 rw-p 00002000 fc:05 1315924                    /lib64/libfreebl3.so
7fc9d5366000-7fc9d53e9000 r-xp 00000000 fc:05 1315917                    /lib64/libm-2.12.so<http://libm-2.12.so>
7fc9d53e9000-7fc9d55e8000 ---p 00083000 fc:05 1315917                    /lib64/libm-2.12.so<http://libm-2.12.so>
7fc9d55e8000-7fc9d55e9000 r--p 00082000 fc:05 1315917                    /lib64/libm-2.12.so<http://libm-2.12.so>
7fc9d55e9000-7fc9d55ea000 rw-p 00083000 fc:05 1315917                    /lib64/libm-2.12.so<http://libm-2.12.so>
7fc9d55ea000-7fc9d58c5000 r-xp 00000000 fc:05 403870                     /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0
7fc9d58c5000-7fc9d5ac4000 ---p 002db000 fc:05 403870                     /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0
7fc9d5ac4000-7fc9d5ae3000 r--p 002da000 fc:05 403870                     /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0


Thank you,


[http://www.cisco.com/c/dam/m/en_us/signaturetool/images/banners/standard/09_standard_graphic.png]
David Moriconi
Software Engineer
dmo...@ci...<mailto:dmo...@ci...>
Tel: 5143333808
Cisco Systems Canada Co. / Les Systemes Cisco Canada CIE
Cisco.com<http://www.cisco.com/web/CA/>
[http://www.cisco.com/assets/swa/img/thinkbeforeyouprint.gif]
Think before you print.
This email may contain confidential and privileged material for the sole use of the intended recipient. Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient (or authorized to receive for the recipient), please contact the sender by reply email and delete all copies of this message.
Please click here<http://www.cisco.com/c/en/us/about/legal/terms-sale-software-license-agreement/company-registration-information.html> for Company Registration Information.


_______________________________________________
Net-snmp-coders mailing list
Net...@li...<mailto:Net...@li...>
https://lists.sourceforge.net/lists/listinfo/net-snmp-coders

Ptoblem to use snmpget

[diego d. <die...@gm...>]

Hello, when i use the following command, i have the following problem
(ubuntu 64 bits):

snmpget -v 2c -c <community> <ip> .1.3.6.1.4.1.15004.4.10.2.2.2.2.2.1.2
Error in packet
Reason: wrongLength (The set value has an illegal length from what the
agent expects)
Failed object: iso.3.6.1.4.1.15004.4.10.2.2.2.2.2.1.2

How can i solve it, thanks in advance.

-- 
die...@gm...
*Diego Dinarte*

Re: Net-SNMP crash when AgentX SubAgent times out

[David M. (dmoricon) <dmo...@ci...>]

Hi Anders,
Thank you for your response

Do you know if a newer version will be released soon with the fix?

David

From: Anders Wallin <wal...@gm...>
Date: Wednesday, November 27, 2019 at 4:40 PM
To: "David Moriconi (dmoricon)" <dmo...@ci...>
Cc: "net...@li..." <net...@li...>
Subject: Re: Net-SNMP crash when AgentX SubAgent times out

Hi David,

yes there are a few patches that fixes this issue, I suggest the you use the latest code from gi...@gi...:net-snmp/net-snmp.git

Regards
Anders Wallin


On Wed, Nov 27, 2019 at 10:17 PM David Moriconi (dmoricon) via Net-snmp-coders <net...@li...<mailto:net...@li...>> wrote:
Hi,
I am using Net-SNMP version 5.8 on CentOS 6.8 as a master agent with an AgentX SubAgent.

When my AgentX SubAgent takes too much time to respond and times out, the Net-SNMP daemon crashes. I have searched for this issue and found https://github.com/net-snmp/net-snmp/commit/793d596838ff7cb48a73b675d62897c56c9e62df but this seems to be already included in version 5.8.

Is this a known issue? Is it already patched? If so, where can I find the patch?

Here is the crash dump that I have in my log when this happens:
Unknown operation 6 in agentx_got_response
*** glibc detected *** /usr/local/netsnmp/netsnmp_base/sbin/snmpd: malloc(): smallbin double linked list corrupted: 0x00005603745c4110 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x3a24675e5e)[0x7fc9d5d72e5e]
/lib64/libc.so.6(+0x3a2467a528)[0x7fc9d5d77528]
/lib64/libc.so.6(__libc_malloc+0x5c)[0x7fc9d5d77b1c]
/lib64/libc.so.6(vasprintf+0x140)[0x7fc9d5d6c340]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_vlog+0x42)[0x7fc9d709ea9c]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_log+0xb9)[0x7fc9d709ebb3]
/usr/local/netsnmp/5.8/lib/libnetsnmpagent.so.35(agentx_got_response+0x669)[0x7fc9d78e2586]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(+0x5778c)[0x7fc9d707c78c]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_sess_timeout+0x2a5)[0x7fc9d707ca54]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_timeout+0x33)[0x7fc9d707c0f0]
/usr/local/netsnmp/netsnmp_base/sbin/snmpd(+0x5081)[0x5603723c3081]
/usr/local/netsnmp/netsnmp_base/sbin/snmpd(main+0x19b8)[0x5603723c28ac]
/lib64/libc.so.6(__libc_start_main+0x100)[0x7fc9d5d1bd20]
/usr/local/netsnmp/netsnmp_base/sbin/snmpd(+0x2b79)[0x5603723c0b79]
======= Memory map: ========
5603723be000-5603723c5000 r-xp 00000000 fc:05 405833                     /usr/local/netsnmp/5.8/sbin/snmpd
5603725c4000-5603725c5000 r--p 00006000 fc:05 405833                     /usr/local/netsnmp/5.8/sbin/snmpd
5603725c5000-5603725c6000 rw-p 00007000 fc:05 405833                     /usr/local/netsnmp/5.8/sbin/snmpd
56037444d000-5603745ee000 rw-p 00000000 00:00 0                          [heap]
7fc9c8000000-7fc9c8021000 rw-p 00000000 00:00 0
7fc9c8021000-7fc9cc000000 ---p 00000000 00:00 0
7fc9ceeaa000-7fc9ceec0000 r-xp 00000000 fc:05 1315920                    /lib64/libgcc_s-4.4.7-20120601.so.1
7fc9ceec0000-7fc9cf0bf000 ---p 00016000 fc:05 1315920                    /lib64/libgcc_s-4.4.7-20120601.so.1
7fc9cf0bf000-7fc9cf0c0000 rw-p 00015000 fc:05 1315920                    /lib64/libgcc_s-4.4.7-20120601.so.1
7fc9cf0c0000-7fc9cf0cd000 r-xp 00000000 fc:05 1310749                    /lib64/libnss_files-2.12.so<http://libnss_files-2.12.so>
7fc9cf0cd000-7fc9cf2cc000 ---p 0000d000 fc:05 1310749                    /lib64/libnss_files-2.12.so<http://libnss_files-2.12.so>
7fc9cf2cc000-7fc9cf2cd000 r--p 0000c000 fc:05 1310749                    /lib64/libnss_files-2.12.so<http://libnss_files-2.12.so>
7fc9cf2cd000-7fc9cf2ce000 rw-p 0000d000 fc:05 1310749                    /lib64/libnss_files-2.12.so<http://libnss_files-2.12.so>
7fc9cf2ce000-7fc9d5163000 r--p 00000000 fc:05 402284                     /usr/lib/locale/locale-archive
7fc9d5163000-7fc9d5165000 r-xp 00000000 fc:05 1315924                    /lib64/libfreebl3.so
7fc9d5165000-7fc9d5364000 ---p 00002000 fc:05 1315924                    /lib64/libfreebl3.so
7fc9d5364000-7fc9d5365000 r--p 00001000 fc:05 1315924                    /lib64/libfreebl3.so
7fc9d5365000-7fc9d5366000 rw-p 00002000 fc:05 1315924                    /lib64/libfreebl3.so
7fc9d5366000-7fc9d53e9000 r-xp 00000000 fc:05 1315917                    /lib64/libm-2.12.so<http://libm-2.12.so>
7fc9d53e9000-7fc9d55e8000 ---p 00083000 fc:05 1315917                    /lib64/libm-2.12.so<http://libm-2.12.so>
7fc9d55e8000-7fc9d55e9000 r--p 00082000 fc:05 1315917                    /lib64/libm-2.12.so<http://libm-2.12.so>
7fc9d55e9000-7fc9d55ea000 rw-p 00083000 fc:05 1315917                    /lib64/libm-2.12.so<http://libm-2.12.so>
7fc9d55ea000-7fc9d58c5000 r-xp 00000000 fc:05 403870                     /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0
7fc9d58c5000-7fc9d5ac4000 ---p 002db000 fc:05 403870                     /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0
7fc9d5ac4000-7fc9d5ae3000 r--p 002da000 fc:05 403870                     /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0


Thank you,


[http://www.cisco.com/c/dam/m/en_us/signaturetool/images/banners/standard/09_standard_graphic.png]
David Moriconi
Software Engineer
dmo...@ci...<mailto:dmo...@ci...>
Tel: 5143333808
Cisco Systems Canada Co. / Les Systemes Cisco Canada CIE
Cisco.com<http://www.cisco.com/web/CA/>
[http://www.cisco.com/assets/swa/img/thinkbeforeyouprint.gif]
Think before you print.
This email may contain confidential and privileged material for the sole use of the intended recipient. Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient (or authorized to receive for the recipient), please contact the sender by reply email and delete all copies of this message.
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_______________________________________________
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Re: Net-SNMP crash when AgentX SubAgent times out

[Anders W. <wal...@gm...>]

Hi David,

yes there are a few patches that fixes this issue, I suggest the you use
the latest code from gi...@gi...:net-snmp/net-snmp.git

Regards
Anders Wallin


On Wed, Nov 27, 2019 at 10:17 PM David Moriconi (dmoricon) via
Net-snmp-coders <net...@li...> wrote:

> Hi,
>
> I am using Net-SNMP version 5.8 on CentOS 6.8 as a master agent with an
> AgentX SubAgent.
>
>
>
> When my AgentX SubAgent takes too much time to respond and times out, the
> Net-SNMP daemon crashes. I have searched for this issue and found
> https://github.com/net-snmp/net-snmp/commit/793d596838ff7cb48a73b675d62897c56c9e62df
> but this seems to be already included in version 5.8.
>
>
>
> Is this a known issue? Is it already patched? If so, where can I find the
> patch?
>
>
>
> Here is the crash dump that I have in my log when this happens:
>
> Unknown operation 6 in agentx_got_response
>
> *** glibc detected *** /usr/local/netsnmp/netsnmp_base/sbin/snmpd:
> malloc(): smallbin double linked list corrupted: 0x00005603745c4110 ***
>
> ======= Backtrace: =========
>
> /lib64/libc.so.6(+0x3a24675e5e)[0x7fc9d5d72e5e]
>
> /lib64/libc.so.6(+0x3a2467a528)[0x7fc9d5d77528]
>
> /lib64/libc.so.6(__libc_malloc+0x5c)[0x7fc9d5d77b1c]
>
> /lib64/libc.so.6(vasprintf+0x140)[0x7fc9d5d6c340]
>
> /usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_vlog+0x42)[0x7fc9d709ea9c]
>
> /usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_log+0xb9)[0x7fc9d709ebb3]
>
>
> /usr/local/netsnmp/5.8/lib/libnetsnmpagent.so.35(agentx_got_response+0x669)[0x7fc9d78e2586]
>
> /usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(+0x5778c)[0x7fc9d707c78c]
>
>
> /usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_sess_timeout+0x2a5)[0x7fc9d707ca54]
>
>
> /usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_timeout+0x33)[0x7fc9d707c0f0]
>
> /usr/local/netsnmp/netsnmp_base/sbin/snmpd(+0x5081)[0x5603723c3081]
>
> /usr/local/netsnmp/netsnmp_base/sbin/snmpd(main+0x19b8)[0x5603723c28ac]
>
> /lib64/libc.so.6(__libc_start_main+0x100)[0x7fc9d5d1bd20]
>
> /usr/local/netsnmp/netsnmp_base/sbin/snmpd(+0x2b79)[0x5603723c0b79]
>
> ======= Memory map: ========
>
> 5603723be000-5603723c5000 r-xp 00000000 fc:05 405833
>                     /usr/local/netsnmp/5.8/sbin/snmpd
>
> 5603725c4000-5603725c5000 r--p 00006000 fc:05 405833
> /usr/local/netsnmp/5.8/sbin/snmpd
>
> 5603725c5000-5603725c6000 rw-p 00007000 fc:05 405833
> /usr/local/netsnmp/5.8/sbin/snmpd
>
> 56037444d000-5603745ee000 rw-p 00000000 00:00 0
> [heap]
>
> 7fc9c8000000-7fc9c8021000 rw-p 00000000 00:00 0
>
> 7fc9c8021000-7fc9cc000000 ---p 00000000 00:00 0
>
> 7fc9ceeaa000-7fc9ceec0000 r-xp 00000000 fc:05 1315920
>      /lib64/libgcc_s-4.4.7-20120601.so.1
>
> 7fc9ceec0000-7fc9cf0bf000 ---p 00016000 fc:05 1315920
> /lib64/libgcc_s-4.4.7-20120601.so.1
>
> 7fc9cf0bf000-7fc9cf0c0000 rw-p 00015000 fc:05 1315920
> /lib64/libgcc_s-4.4.7-20120601.so.1
>
> 7fc9cf0c0000-7fc9cf0cd000 r-xp 00000000 fc:05 1310749
> /lib64/libnss_files-2.12.so
>
> 7fc9cf0cd000-7fc9cf2cc000 ---p 0000d000 fc:05 1310749
> /lib64/libnss_files-2.12.so
>
> 7fc9cf2cc000-7fc9cf2cd000 r--p 0000c000 fc:05 1310749
> /lib64/libnss_files-2.12.so
>
> 7fc9cf2cd000-7fc9cf2ce000 rw-p 0000d000 fc:05 1310749
> /lib64/libnss_files-2.12.so
>
> 7fc9cf2ce000-7fc9d5163000 r--p 00000000 fc:05 402284
>                    /usr/lib/locale/locale-archive
>
> 7fc9d5163000-7fc9d5165000 r-xp 00000000 fc:05 1315924
> /lib64/libfreebl3.so
>
> 7fc9d5165000-7fc9d5364000 ---p 00002000 fc:05 1315924
> /lib64/libfreebl3.so
>
> 7fc9d5364000-7fc9d5365000 r--p 00001000 fc:05 1315924
> /lib64/libfreebl3.so
>
> 7fc9d5365000-7fc9d5366000 rw-p 00002000 fc:05 1315924
> /lib64/libfreebl3.so
>
> 7fc9d5366000-7fc9d53e9000 r-xp 00000000 fc:05 1315917
> /lib64/libm-2.12.so
>
> 7fc9d53e9000-7fc9d55e8000 ---p 00083000 fc:05 1315917
> /lib64/libm-2.12.so
>
> 7fc9d55e8000-7fc9d55e9000 r--p 00082000 fc:05 1315917
> /lib64/libm-2.12.so
>
> 7fc9d55e9000-7fc9d55ea000 rw-p 00083000 fc:05 1315917
>           /lib64/libm-2.12.so
>
> 7fc9d55ea000-7fc9d58c5000 r-xp 00000000 fc:05 403870
> /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0
>
> 7fc9d58c5000-7fc9d5ac4000 ---p 002db000 fc:05 403870
> /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0
>
> 7fc9d5ac4000-7fc9d5ae3000 r--p 002da000 fc:05 403870
> /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0
>
>
>
>
>
> Thank you,
>
>
>
>
>
> [image:
> http://www.cisco.com/c/dam/m/en_us/signaturetool/images/banners/standard/09_standard_graphic.png]
>
> *David Moriconi*
>
> Software Engineer
>
> dmo...@ci...
>
> Tel: *5143333808*
>
> Cisco Systems Canada Co. / Les Systemes Cisco Canada CIE
>
> Cisco.com <http://www.cisco.com/web/CA/>
>
> [image: http://www.cisco.com/assets/swa/img/thinkbeforeyouprint.gif]
>
> Think before you print.
>
> This email may contain confidential and privileged material for the sole
> use of the intended recipient. Any review, use, distribution or disclosure
> by others is strictly prohibited. If you are not the intended recipient (or
> authorized to receive for the recipient), please contact the sender by
> reply email and delete all copies of this message.
>
> Please click here
> <http://www.cisco.com/c/en/us/about/legal/terms-sale-software-license-agreement/company-registration-information.html>
> for Company Registration Information.
>
>
>
>
> _______________________________________________
> Net-snmp-coders mailing list
> Net...@li...
> https://lists.sourceforge.net/lists/listinfo/net-snmp-coders
>

Net-SNMP crash when AgentX SubAgent times out

[David M. (dmoricon) <dmo...@ci...>]

Hi,
I am using Net-SNMP version 5.8 on CentOS 6.8 as a master agent with an AgentX SubAgent.

When my AgentX SubAgent takes too much time to respond and times out, the Net-SNMP daemon crashes. I have searched for this issue and found https://github.com/net-snmp/net-snmp/commit/793d596838ff7cb48a73b675d62897c56c9e62df but this seems to be already included in version 5.8.

Is this a known issue? Is it already patched? If so, where can I find the patch?

Here is the crash dump that I have in my log when this happens:
Unknown operation 6 in agentx_got_response
*** glibc detected *** /usr/local/netsnmp/netsnmp_base/sbin/snmpd: malloc(): smallbin double linked list corrupted: 0x00005603745c4110 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x3a24675e5e)[0x7fc9d5d72e5e]
/lib64/libc.so.6(+0x3a2467a528)[0x7fc9d5d77528]
/lib64/libc.so.6(__libc_malloc+0x5c)[0x7fc9d5d77b1c]
/lib64/libc.so.6(vasprintf+0x140)[0x7fc9d5d6c340]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_vlog+0x42)[0x7fc9d709ea9c]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_log+0xb9)[0x7fc9d709ebb3]
/usr/local/netsnmp/5.8/lib/libnetsnmpagent.so.35(agentx_got_response+0x669)[0x7fc9d78e2586]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(+0x5778c)[0x7fc9d707c78c]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_sess_timeout+0x2a5)[0x7fc9d707ca54]
/usr/local/netsnmp/5.8/lib/libnetsnmp.so.35(snmp_timeout+0x33)[0x7fc9d707c0f0]
/usr/local/netsnmp/netsnmp_base/sbin/snmpd(+0x5081)[0x5603723c3081]
/usr/local/netsnmp/netsnmp_base/sbin/snmpd(main+0x19b8)[0x5603723c28ac]
/lib64/libc.so.6(__libc_start_main+0x100)[0x7fc9d5d1bd20]
/usr/local/netsnmp/netsnmp_base/sbin/snmpd(+0x2b79)[0x5603723c0b79]
======= Memory map: ========
5603723be000-5603723c5000 r-xp 00000000 fc:05 405833                     /usr/local/netsnmp/5.8/sbin/snmpd
5603725c4000-5603725c5000 r--p 00006000 fc:05 405833                     /usr/local/netsnmp/5.8/sbin/snmpd
5603725c5000-5603725c6000 rw-p 00007000 fc:05 405833                     /usr/local/netsnmp/5.8/sbin/snmpd
56037444d000-5603745ee000 rw-p 00000000 00:00 0                          [heap]
7fc9c8000000-7fc9c8021000 rw-p 00000000 00:00 0
7fc9c8021000-7fc9cc000000 ---p 00000000 00:00 0
7fc9ceeaa000-7fc9ceec0000 r-xp 00000000 fc:05 1315920                    /lib64/libgcc_s-4.4.7-20120601.so.1
7fc9ceec0000-7fc9cf0bf000 ---p 00016000 fc:05 1315920                    /lib64/libgcc_s-4.4.7-20120601.so.1
7fc9cf0bf000-7fc9cf0c0000 rw-p 00015000 fc:05 1315920                    /lib64/libgcc_s-4.4.7-20120601.so.1
7fc9cf0c0000-7fc9cf0cd000 r-xp 00000000 fc:05 1310749                    /lib64/libnss_files-2.12.so
7fc9cf0cd000-7fc9cf2cc000 ---p 0000d000 fc:05 1310749                    /lib64/libnss_files-2.12.so
7fc9cf2cc000-7fc9cf2cd000 r--p 0000c000 fc:05 1310749                    /lib64/libnss_files-2.12.so
7fc9cf2cd000-7fc9cf2ce000 rw-p 0000d000 fc:05 1310749                    /lib64/libnss_files-2.12.so
7fc9cf2ce000-7fc9d5163000 r--p 00000000 fc:05 402284                     /usr/lib/locale/locale-archive
7fc9d5163000-7fc9d5165000 r-xp 00000000 fc:05 1315924                    /lib64/libfreebl3.so
7fc9d5165000-7fc9d5364000 ---p 00002000 fc:05 1315924                    /lib64/libfreebl3.so
7fc9d5364000-7fc9d5365000 r--p 00001000 fc:05 1315924                    /lib64/libfreebl3.so
7fc9d5365000-7fc9d5366000 rw-p 00002000 fc:05 1315924                    /lib64/libfreebl3.so
7fc9d5366000-7fc9d53e9000 r-xp 00000000 fc:05 1315917                    /lib64/libm-2.12.so
7fc9d53e9000-7fc9d55e8000 ---p 00083000 fc:05 1315917                    /lib64/libm-2.12.so
7fc9d55e8000-7fc9d55e9000 r--p 00082000 fc:05 1315917                    /lib64/libm-2.12.so
7fc9d55e9000-7fc9d55ea000 rw-p 00083000 fc:05 1315917                    /lib64/libm-2.12.so
7fc9d55ea000-7fc9d58c5000 r-xp 00000000 fc:05 403870                     /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0
7fc9d58c5000-7fc9d5ac4000 ---p 002db000 fc:05 403870                     /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0
7fc9d5ac4000-7fc9d5ae3000 r--p 002da000 fc:05 403870                     /usr/local/ssl/1.0.2s/lib/libcrypto.so.1.0.0


Thank you,


[http://www.cisco.com/c/dam/m/en_us/signaturetool/images/banners/standard/09_standard_graphic.png]
David Moriconi
Software Engineer
dmo...@ci...<mailto:dmo...@ci...>
Tel: 5143333808
Cisco Systems Canada Co. / Les Systemes Cisco Canada CIE
Cisco.com<http://www.cisco.com/web/CA/>
[http://www.cisco.com/assets/swa/img/thinkbeforeyouprint.gif]
Think before you print.
This email may contain confidential and privileged material for the sole use of the intended recipient. Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient (or authorized to receive for the recipient), please contact the sender by reply email and delete all copies of this message.
Please click here<http://www.cisco.com/c/en/us/about/legal/terms-sale-software-license-agreement/company-registration-information.html> for Company Registration Information.

snmpd crash when started with udp, dltsudp, tlstcp

[Larry H. <lh...@gm...>]

I am running net-snmp 5.8 r0.

I can get snmpd, snmptrapd and snmpget working with dtlsudp and tlstcp.
Except for some corner cases:

If I have a trap session defined in the snmpd.conf file, but the snmptrapd
is not running.
snmpd gets a SIGSEGV at startup time. (If I start snmptrapd first, then
everything works)

snmpd.local.conf:

trapsess -v 3 -T their_identity=manager.crt  tlstcp:10.20.19.57:10162
certSecName 1 04:BF:CF:1A:9C:5D:7A:9D:87:7E:1D:D8:A3:77:1A:DD:D7:76:77:0B
--sn "AdminUser"

snmpd start up:
/usr/sbin/snmpd -f
-Dsnmpd/select,snmp_store,snmp_alarm,snmp_agent,verbose:asp -Losd udp:
0.0.0.0:161 dtlsudp:10161 tlstcp:10161

Anybody seen this or got a work around????

registered debug token snmpd/select, 1
registered debug token snmp_store, 1
registered debug token snmp_alarm, 1
registered debug token snmp_agent, 1
registered debug token verbose:asp, 1
Log handling defined - disabling stderr
snmp_alarm: registered alarm 1, t = 10.000, flags=0x01
snmp_alarm: registered alarm 2, t = 3.000, flags=0x01
snmp_alarm: registered alarm 3, t = 5.000, flags=0x01
Turning on AgentX master support.
tlstcp: failed to connect to 10.20.19.57:10162
---- OpenSSL Related Errors: ----
 error: #151584876 (file ../openssl-1.1.1d/crypto/pem/pem_lib.c, line 745)
  Textual Error: Expecting: ANY PRIVATE KEY
 error: #33562735 (file ../openssl-1.1.1d/crypto/bio/b_sock2.c, line 110)
 error: #537436263 (file ../openssl-1.1.1d/crypto/bio/b_sock2.c, line 111)
 error: #33562735 (file ../openssl-1.1.1d/crypto/bio/bss_conn.c, line 173)
  Textual Error: hostname=10.20.19.57 service=10162
 error: #537342055 (file ../openssl-1.1.1d/crypto/bio/bss_conn.c, line 177)
---- End of OpenSSL Errors ----
snmp_alarm: no alarms found to schedule
snmp_agent: final port spec: "udp:0.0.0.0:161,dtlsudp:10161,tlstcp:10161"
snmp_agent: installing master agent on port udp:0.0.0.0:161
snmp_agent: init_master_agent; "udp:0.0.0.0:161" registered as an agent NSAP
snmp_agent: installing master agent on port dtlsudp:10161
A SNMP version other than 3 was requested with (D)TLS; using 3 anyways
snmp_agent: init_master_agent; "dtlsudp:10161" registered as an agent NSAP
snmp_agent: installing master agent on port tlstcp:10161
snmp_agent: init_master_agent; "tlstcp:10161" registered as an agent NSAP
snmp_store: storing stuff...
NET-SNMP version 5.8
snmpd/select: select( numfds=10, ..., tvp=0xffffd4f0)
snmpd/select: returned, count = 1
snmpd/select: select( numfds=10, ..., tvp=0xffffd4f0)
snmpd/select: returned, count = 1
snmpd/select: select( numfds=10, ..., tvp=0xffffd4f0)
snmpd/select: returned, count = 0

Program received signal SIGSEGV, Segmentation fault.
0xf7d38dfa in snmp_sess_timeout (sessp=0x809c7d8) at snmp_api.c:6789
6789    snmp_api.c: No such file or directory.
(gdb) bt
#0  0xf7d38dfa in snmp_sess_timeout (sessp=0x809c7d8) at snmp_api.c:6789
#1  0xf7d38fa9 in snmp_timeout () at snmp_api.c:6660
#2  0x0804b50f in receive () at snmpd.c:1347
#3  0x0804ab52 in main (argc=7, argv=0xffffd7b4) at snmpd.c:1125
(gdb) print sptr
$1 = <optimized out>
(gdb) print rp
$2 = (netsnmp_request_list *) 0x80d13d8
(gdb) print now
$3 = {tv_sec = 83215, tv_usec = 331554}
(gdb) print rp->pdu->securityModel
Cannot access memory at address 0x28
(gdb) print rp->expireM
$4 = {tv_sec = 0, tv_usec = 0}
(gdb) print rp->pdu
$5 = (netsnmp_pdu *) 0x0
(gdb)

USM users are not persistent.

[RAHUL S. <rah...@gm...>]

Hi,

I am using net-snmp5.7.3 agent. I am using USM user table to create 2nd and
3rd Snmpv3 user.
The user is getting created successful and I am able to contact using the
new user.

However these user accounts are not persistent and they get cleared off
after power cycle.

Is there anyway to make these users persistent?
Also can how can I restrict the maximum number of users that can be created
using USM to 3?

Regards,
Rahul Sharma.

Re: Invalid authentication protocol specified after -3a flag: SHA-512

[Linux <lin...@gm...>]

Did you try just the word: SHA rather than SHA-512?

Ajay

On 10/30/19 10:55 PM, Wu, Merry (NSB - CN/Hangzhou) wrote:
>
> Hello,
>
> When I use snmpget to get some, there are some wrong, could you please 
> give some support? Thanks!
>
> snmpget -v3 -l authPriv -u username -a SHA-512 -A password -x AES -X 
> cmb9.admin host_ip  1.3.6.1.4.1.28458.1.64.3.1.1.1.0
>
> Invalid authentication protocol specified after -3a flag: SHA-512
>
> NET-SNMP version: 5.8
>
> OS: CentOS Linux release 7.6.1810 (Core)
>
> B.R.
>
> Merry Wu
>
>
>
> _______________________________________________
> Net-snmp-coders mailing list
> Net...@li...
> https://lists.sourceforge.net/lists/listinfo/net-snmp-coders

Re: [Net-Snmp] Build Snmp lib in Android

[Magnus F. <ma...@ly...>]

On Tue, Oct 15, 2019 at 07:47:38AM +0000, Tran Quang Linh (FGA.PDC) via Net-snmp-coders wrote:
> Dear Net-Snmp developer team,
> 
> Currently, I'm trying to build your project (https://sourceforge.net/p/net-snmp/code/ci/master/tree/) in Android to build it in 64 bit architecture. But when I create a project and compiler it, I got tons of error. Please help me to know what I'm doing wrong.
> Following is some information about project I developed.
> 
> 1.       Project create to build on Eclipse IDE

My guess is that you go wrong in this step. Net-SNMP is a classic
configure-based program, to build it you should run

./configure
make
make install

Note that there are no project files nor any IDE in the above description.

If you are doing cross builds to your target things becomes a little bit more
complicated.

/MF

> 2.       Architecture: Armeabi-v7a Armeabi-v8a, x86, x86_x64
> 
> 3.       Target SDK: 21
> 
> Please inform to me if you need any information more. I look forward to hearing from you.
> 
> Thanks and best regards,
> LinhTQ2
> 


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