Thanks WBTMagnum.
So it sounds like the bisect has narrowed to 5.9.1 showing the issue,
and 5.9.3 showing the fix. From the CHANGES file, it sounds like there
was no 5.9.2 release:
https://github.com/net-snmp/net-snmp/blob/master/CHANGES
Presumably, then, the fix would be one of the ones in
Dear Bryce,
NET-SNMP version 5.9.3 is up and running without incident for almost a week now.
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Title:
snmpd crashes with segfault
Hi nemecek, how has the PPA version being running so far?
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Title:
snmpd crashes with segfault (libnetsnmpmibs.so.15.1.2)
To manage
Dear Athos,
I downgraded the system to the version provided in your PPA. I'll report
back any issues.
JFTR: Up until now, v5.9.4.pre2 was still running without segfaulting.
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Hi, nemecek!
As suggested by Paride, I backported 5.9.3+dfsg-1 to jammy in the following PPA:
https://launchpad.net/~athos-ribeiro/+archive/ubuntu/net-snmp
Would you mind testing it so we can start working on Paride's bisecting
idea? Once we find the last bad version we can start searching for
** Changed in: net-snmp (Ubuntu)
Assignee: (unassigned) => Athos Ribeiro (athos-ribeiro)
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Title:
snmpd crashes with segfault
** Tags added: server-todo
** Changed in: net-snmp (Ubuntu)
Status: Incomplete => Triaged
** Changed in: net-snmp (Ubuntu)
Importance: High => Medium
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Update: snmpd service is running for 12 days without segfaulting.
And yes, if it helps I can test further snmpd versions. It might also
make sense to revert to the faulty snmpd version at some time to verify
if the segfaults still happen.
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Great, however it is probably worth waiting a bit longer before drawing
a conclusion, please keep us posted.
Should we conclude that 5.9.4+dfsg-1 is fixed, I think we should try
(sort of) bisecting, e.g. by backporting 5.9.3+dfsg-1 to Jammy and
having you test it. Given that it takes several days
@paride I applied the PPA you provided on an affected system shortly
after you released it. Usually snmpd would crash within a day or two on
that system. The longest reported period for snmpd to work was a bit
more than 5 days. With the patched version snmpd is now running for 6
days without
Hello, I backported net-snmp net-snmp_5.9.4+dfsg-1 to Jammy, it will be
shortly available in this PPA:
https://launchpad.net/~paride/+archive/ubuntu/net-snmp
Can you please check if the crash still happens with this version? This
will be an important data point to understand how to move the
@mitchdz I gave your PPA a spin on one of our systems running Ubuntu
22.04. Unfortunately snmpd segfaulted again after a few hours.
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Title:
Thanks for the crash report! Looking into the crash report I do think
this is related to https://github.com/net-snmp/net-snmp/issues/107. I
tried applying the patch to our Jammy version and unfortunately it does
not apply completely due to differences in the codebase.
I did apply the lines I
I'm having the same problem seemingly only on my k8s nodes (running on
docker, not containerd), Ubuntu 22.04, and erratic for frequency
snmpd/jammy-updates,now 5.9.1+dfsg-1ubuntu2.6 amd64 [installed]
Can't find a solution anywhere on the internet, so I guess this is me
subscribing to this thread
Sure, attached the crash file from /var/crash.
** Attachment added: "snmpd crash"
https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/720638/+attachment/5747268/+files/_usr_sbin_snmpd.0.crash
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Hi,
Could you please share the core dump with us? That would help us
investigate better this issue.
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Title:
snmpd crashes with segfault
Same problem here in three production servers
sudo journalctl -u snmpd.service -n 50
Feb 12 16:15:14 accadb001 systemd[1]: Starting Simple Network Management
Protocol (SNMP) Daemon
Feb 12 16:15:14 accadb001 systemd[1]: Started Simple Network Management
Protocol (SNMP) Daemon..
Feb 12
Same on Debian bullseye and running docker. But just sometimes and even
not on every instance. Strange!
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Title:
snmpd crashes with
Hey there,
Running ubuntu 22.04, also seeing this issue.
SNMPD version : snmpd/jammy-updates,now 5.9.1+dfsg-1ubuntu2.6 amd64
[installed]
I've got docker containers running on those servers, and I'm using
librenms to monitor them.
I've installed systemd-coredump and will follow through when I
Thank you for the update.
Would you be able to provide a coredump, a backtrace and/or a
reproducer? I did some research and found upstream's
https://github.com/net-snmp/net-snmp/issues/107 which seems to be
related, but the patch that fixes their issue doesn't make sense on
Jammy's net-snmp, so
We're seeing this as well on Ubuntu 22.04:
snmpd[2271493]: error on subcontainer 'ifTable container' remove (-1)
kernel: show_signal_msg: 22 callbacks suppressed
kernel: snmpd[2271493]: segfault at 60 ip 7f4c9c168423 sp 7fffa460cdd0
error 4 in
One of our server's ran into the same issue, snmpd frequently failing
with:
snmpd[766]: error on subcontainer 'ifTable container' remove (-1)
kernel: [367589.916607] snmpd[766]: segfault at 91 ip 7f2af4a20845 sp
7ffcbd99d3e0 error 4 in libnetsnmpmibs.so.35.0.0[7f2af4986000+d3000]
Hi Paride,
Thank you very much for making the package, unfortunately the server in
question is customer production server and have no test server where I
can reproduce this issue, I'm not able to test anymore, I had a limited
time to solve this, so I did some ugly workaround to prevent daemon
Hi Branko,
I prepared a PPA with the new upstream release (amd64 only):
https://launchpad.net/~paride/+archive/ubuntu/net-snmp/
Please let us know if you can reproduce the issue with this one.
Note: some d/patches didn't apply cleanly, so I just removed them from
d/p/series. They looked safe
Hi Lucas,
I'm not able to build latest code from source at the moment, I tried to
look for snmpd from backports ..., but no luck. If there are any more
details I can get from the coredump I could try to provide them.
Regarding the upstream issue it is really confusing, some people
reported using
Thanks for the investigation Branko.
Checking the upstream issue you mentioned, it seems that the bug was
introduced and fixed after the release of the version we have even in
the Ubuntu development release, so I am not sure if this is the reason
of your failure. Could you please try the upstream
Hi I'm seeing these on one of the servers running docker. 20.04 running
snmpd-5.8+dfsg-2ubuntu2.3:
kernel: snmpd[1866629]: segfault at 6f ip 7fa535732775 sp
7fffaf58c470 error 4 in libnetsnmpmibs.so.35.0.0[7fa535698000+d3000]
I was able to get some details, probably not enough from the
@Christoph could you please try to provide a backtrace to us? Also if
you have any settings in your config file different from the default,
could you share it with us? You are using a newer version than the one
originally reported in this bug, so that would be great to determine if
this is a
Crashes on ubuntu 20.04 too:
---
...
Aug 19 18:30:07 server snmpd[1308748]: Cannot statfs
/run/docker/netns/cf01dc8e9bbc: Permission denied
Aug 19 18:30:16 server snmpd[1308748]: error on subcontainer 'ifTable
container' remove (-1)
Aug 19 18:30:19 server kernel: snmpd[1308748]: segfault at 91
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On 2011-03-07 15:01, Chuck Short wrote:
Thank you for taking the time to report this bug and helping to make
Ubuntu better. Please try to obtain a backtrace following the
instructions at http://wiki.ubuntu.com/DebuggingProgramCrash and upload
I
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On 2011-03-07 15:01, Chuck Short wrote:
Thank you for taking the time to report this bug and helping to make
Ubuntu better. Please try to obtain a backtrace following the
instructions at http://wiki.ubuntu.com/DebuggingProgramCrash and upload
I
Thank you for taking the time to report this bug and helping to make
Ubuntu better. Please try to obtain a backtrace following the
instructions at http://wiki.ubuntu.com/DebuggingProgramCrash and upload
the backtrace (as an attachment) to the bug report. This will greatly
help us in tracking down
Thank you for taking the time to report this bug and helping to make
Ubuntu better. Please try to obtain a backtrace following the
instructions at http://wiki.ubuntu.com/DebuggingProgramCrash and upload
the backtrace (as an attachment) to the bug report. This will greatly
help us in tracking down
I am seeing the same segfault on my lucid boxes, config file attached
with sensitive information removed. None of the extended checks are
actually being done on the machines that are crashing, as the first
hosts we upgraded to lucid do not do anything that complex -- run
lighttpd and that is all.
I am seeing the same segfault on my lucid boxes, config file attached
with sensitive information removed. None of the extended checks are
actually being done on the machines that are crashing, as the first
hosts we upgraded to lucid do not do anything that complex -- run
lighttpd and that is all.
** Attachment removed: modified.conffile..etc.default.snmpd.txt
https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/720638/+attachment/1855929/+files/modified.conffile..etc.default.snmpd.txt
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** Attachment added: etc.snmp.snmpd.conf
https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/720638/+attachment/1864013/+files/etc.snmp.snmpd.conf
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** Attachment added: etc.default.snmpd.txt
https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/720638/+attachment/1864012/+files/etc.default.snmpd.txt
** Attachment removed: modified.conffile..etc.snmp.snmpd.conf.txt
Hi Clint,
Thanks for your concern about the snmp community name. In the original uploaded
config the community name was a fake one already (zwaargeheim = verysecret).
Now I have changed the IP-address too.
It is no problem to me to change the visibility back to public.
Good to see the the bug
** Visibility changed to: Public
** Changed in: net-snmp (Ubuntu)
Assignee: Clint Byrum (clint-fewbar) = (unassigned)
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Title:
snmpd
** Attachment removed: modified.conffile..etc.default.snmpd.txt
https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/720638/+attachment/1855929/+files/modified.conffile..etc.default.snmpd.txt
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** Attachment added: etc.default.snmpd.txt
https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/720638/+attachment/1864012/+files/etc.default.snmpd.txt
** Attachment removed: modified.conffile..etc.snmp.snmpd.conf.txt
** Attachment added: etc.snmp.snmpd.conf
https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/720638/+attachment/1864013/+files/etc.snmp.snmpd.conf
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Hi Clint,
Thanks for your concern about the snmp community name. In the original uploaded
config the community name was a fake one already (zwaargeheim = verysecret).
Now I have changed the IP-address too.
It is no problem to me to change the visibility back to public.
Good to see the the bug
** Visibility changed to: Public
** Changed in: net-snmp (Ubuntu)
Assignee: Clint Byrum (clint-fewbar) = (unassigned)
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Title:
snmpd crashes
rhhoek I've marked this bug private, as it includes your snmpd community
name, which you may not have wanted to be publicly available. If not,
then I suggest uploading new versions and redacting the community name
before marking the report public again.
I'm also marking this as Confirmed. I've
rhhoek I've marked this bug private, as it includes your snmpd community
name, which you may not have wanted to be publicly available. If not,
then I suggest uploading new versions and redacting the community name
before marking the report public again.
I'm also marking this as Confirmed. I've
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Title:
snmpd crashes with segfault (libnetsnmpmibs.so.15.1.2)
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** Attachment removed: SyslogSnmpd.txt
https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/720638/+attachment/1855928/+files/SyslogSnmpd.txt
** Attachment added: SyslogSnmpd.txt
https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/720638/+attachment/1855937/+files/SyslogSnmpd.txt
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Title:
snmpd crashes with segfault (libnetsnmpmibs.so.15.1.2)
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