Ubuntu
ntop package

segfault in libc-2.15.so

Bug #1018377 reported by Jim Tarvid
32
This bug affects 7 people
Affects Status Importance Assigned to Milestone
ntop (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

I added the -M option to enable interface switching

root@helen:~# diff ntop /etc/init.d/ntop
96c96
< -d -L -u $USER -P $HOMEDIR \
---
> -d -M -L -u $USER -P $HOMEDIR \

Running on two interraces

root@helen:~# cat /var/lib/ntop/init.cfg
USER="ntop"
INTERFACES="eth0,eth1"

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ntop 3:4.1.0+dfsg1-1
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18
Uname: Linux 3.2.0-25-generic x86_64
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
Date: Wed Jun 27 09:37:42 2012
InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Release amd64 (20120424.1)
ProcEnviron:
 TERM=xterm
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ntop
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.init.d.ntop: 2012-06-27T01:16:44.458641

Revision history for this message
Jim Tarvid (tarvid) wrote :
Revision history for this message
Jim Tarvid (tarvid) wrote :

May be in the web interface. Up for several minutes now without incident.

Revision history for this message
Jim Tarvid (tarvid) wrote :

after a couple of hours
Jun 27 12:35:32 helen ntop[4423]: WARNING: Max num hash entries (8192) reached (see -x)
Jun 27 12:35:32 helen ntop[4423]: **ERROR** Sanity check failed (2) [Low memory?]

increased mas hash table entries

root@helen:/etc/init.d# diff /root/ntop /etc/init.d/ntop
96c96
< -d -L -u $USER -P $HOMEDIR \
---
> -d -M -L -u $USER -P $HOMEDIR -x 65536 \

Revision history for this message
Jim Tarvid (tarvid) wrote :

Also a place to do that in the Admin > Configure interface. Up an hour with browsing and no segfaults

Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in ntop (Ubuntu):
status: New → Confirmed
Revision history for this message
Daryl Lublink (dlublink) wrote :

I tried "-x 32768" and ntop still failed. I think ntop lasted an extra 15 minutes this time. It might be a resource leak?

Revision history for this message
Daryl Lublink (dlublink) wrote :

Here is the version I am using :
Version: 3:4.1.0+dfsg1-1
Filename: pool/universe/n/ntop/ntop_4.1.0+dfsg1-1_amd64.deb

Revision history for this message
Daryl Lublink (dlublink) wrote :

I tested it with only one interface :

 3097 ? Ssl 0:00 /usr/sbin/ntop -d -L -u ntop -P /var/lib/ntop --access-log-file /var/log/ntop/access.log -i eth0 -p /etc/ntop/protocol.list -O /var/log/ntop -n 0 -x 32768

Aug 23 10:26:26 kamailio-dev-1 ntop[3003]: CHKVER: This version of ntop is a minimally supported but OLDER version - please upgrade
Aug 23 10:26:31 kamailio-dev-1 ntop[3003]: THREADMGMT[t139863395399424]: RRD: Started thread for throughput data collection
Aug 23 10:26:31 kamailio-dev-1 ntop[3003]: THREADMGMT[t139863752234752]: RRD: Data collection thread running [p3003]
Aug 23 10:26:31 kamailio-dev-1 ntop[3003]: THREADMGMT[t139863395399424]: RRD: Throughput data collection: Thread starting [p3003]
Aug 23 10:26:31 kamailio-dev-1 ntop[3003]: THREADMGMT[t139863395399424]: RRD: Throughput data collection: Thread running [p3003]
Aug 23 10:34:23 kamailio-dev-1 kernel: [65257.913335] ntop[3006]: segfault at ffffffee ip 00007f349ac0f57c sp 00007f3492ebabe8 error 4 in libc-2.15.so[7f349ab8c000+1b5000]

Revision history for this message
Juan Moyano (wincus) wrote :

I'm having the same issue ( runnin on Ubuntu 12.04.3 )

ntop[22401]: segfault at fffffff7 ip 00007fec2903b57c sp 00007fec212e6be8 error 4 in libc-2.15.so[7fec28fb8000+1b5000]

This happens every couple of hours. Ntop is getting flows from remote fprobes.

To post a comment you must log in.
This report contains Public information  
Everyone can see this information.
Subscribing...

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.