SNMPD segfault with CentOS5 Xen kernel

[Philipp Jäggi]

Dear Richard

Thanks a lot for your help, but my main problem isn't solved. I took away 
all the ipv6 addresses, but the segfault still happens when I work with 
the dell snmp hardware monitoring tools.


May  8 11:55:03 wtest01 snmpd[7778]: NET-SNMP version 5.3.1
May  8 11:55:04 wtest01 snmpd[7778]: [smux_accept] accepted fd 11 from 
127.0.0.1:35692
May  8 11:55:04 wtest01 snmpd[7778]: accepted smux peer: oid 
SNMPv2-SMI::enterprises.674.10892.1, descr Systems Management SNMP MIB 
Plug-in Manager
May  8 11:58:21 wtest01 snmpd[7778]: Connection from UDP: 
[192.168.113.45]:32813
May  8 11:58:21 wtest01 snmpd[7778]: Received SNMP packet(s) from UDP: 
[192.168.113.45]:32813
May  8 11:58:21 wtest01 snmpd[7778]: Connection from UDP: 
[192.168.113.45]:32813
May  8 11:58:21 wtest01 last message repeated 487 times
May  8 11:58:21 wtest01 snmpd[7778]: ipSystemStatsTable node 
ipSystemStatsOutFragOKs not implemented: skipping
May  8 11:58:21 wtest01 snmpd[7778]: ipSystemStatsTable node 
ipSystemStatsOutFragOKs not implemented: skipping
May  8 11:58:21 wtest01 snmpd[7778]: Connection from UDP: 
[192.168.113.45]:32813
May  8 11:58:21 wtest01 last message repeated 101 times
May  8 11:58:21 wtest01 kernel: snmpd[7778]: segfault at 000055756df743ec 
rip 00002aaaab6cdc56 rsp 00007fffe2f0e210 error 6

I'm not really sure if this is a general net-snmpd problem or if it comes 
from the dell monitoring tools. But it's quite clear that it appears only 
with xen kernels. Probably I should post this message better to the xen 
mailing list. 

So, if anyone has a hint for me, how I can solve my problem, it would be a 
big help for me. I tried a lot of things, but unitl now, nothing worked. 
:-(


bye Philipp



================================================================================ 

Philipp Jäggi
SNCT Sandweiler
bp 23
L-5230 Sandweiler





Richard Chan <rspchan at starhub.net.sg> 
08.05.2007 04:29

To
Philipp Jäggi <philipp.jaggi at snct.lu>
cc
linux-poweredge at dell.com
Subject
Re: SNMPD segfault with CentOS5 Xen kernel






An earlier posting on the list solved the 'error on subcontainer' part 
for me - Xen network scripts create duplicate IPv6 addresses.
Reassigning one of the addresses will do the trick. I did not see the 
segfault part though.

Philipp Jäggi wrote:
>
> Dear mailinglist members
>
> I like to monitor my CentOS 5 Dell 1950 Server over 
> snmp/dsm_sa_snmp32. When I do now a snmpwalk, my snmpd crashed with 
> segfault. After testing a while, I found out that the same problem 
> exists with older fedora core 6 xen kernel. With the lastest fedora 
> xen kernel, this bug is not any more existant. So, I can't wait until 
> Redhat, or CentOS will reach this kernel version that is actual on 
> FC6. So does anybody have the same problem and hopefully, does 
> somebody have a workarround?
>
> Here the log entry in /var/log/messages:
>
> May  3 17:13:20 wtest01 snmpd[12455]: error on subcontainer 'ia_addr' 
> insert (-1)
> May  3 17:13:20 wtest01 snmpd[12455]: error on subcontainer '' insert 
> (-1)
> May  3 17:13:50 wtest01 snmpd[12455]: error on subcontainer 'ia_addr' 
> insert (-1)
> May  3 17:13:50 wtest01 snmpd[12455]: error on subcontainer '' insert 
> (-1)
> May  3 17:14:20 wtest01 snmpd[12455]: error on subcontainer 'ia_addr' 
> insert (-1)
> May  3 17:14:20 wtest01 snmpd[12455]: error on subcontainer '' insert 
> (-1)
> May  3 17:14:50 wtest01 snmpd[12455]: error on subcontainer 'ia_addr' 
> insert (-1)
> May  3 17:14:50 wtest01 snmpd[12455]: error on subcontainer '' insert 
> (-1)
> May  3 17:15:20 wtest01 snmpd[12455]: error on subcontainer 'ia_addr' 
> insert (-1)
> May  3 17:15:20 wtest01 snmpd[12455]: error on subcontainer '' insert 
> (-1)
> May  3 17:15:22 wtest01 snmpd[12455]: Connection from UDP: 
> [127.0.0.1]:32770
> May  3 17:15:22 wtest01 snmpd[12455]: Received SNMP packet(s) from 
> UDP: [127.0.0.1]:32770
> May  3 17:15:22 wtest01 snmpd[12455]: Connection from UDP: 
> [127.0.0.1]:32770
> May  3 17:15:22 wtest01 last message repeated 586 times
> May  3 17:15:22 wtest01 snmpd[12455]: ipSystemStatsTable node 
> ipSystemStatsOutFragOKs not implemented: skipping
> May  3 17:15:22 wtest01 snmpd[12455]: ipSystemStatsTable node 
> ipSystemStatsOutFragOKs not implemented: skipping
> May  3 17:15:22 wtest01 snmpd[12455]: Connection from UDP: 
> [127.0.0.1]:32770
> May  3 17:15:22 wtest01 last message repeated 119 times
> May  3 17:15:22 wtest01 kernel: snmpd[12455]: segfault at 
> 000055756797d8ac rip 00002aaaab6cdc56 rsp 00007fffe59eace0 error 6
>
>
> Tnks a lot for any hint or help
>
>
> Best regards
>
> Philipp
>
> ------------------------------------------------------------------------
>
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