drone crashes in one of the ubuntu based Linux box

[Lucky]

Hi,

Drone crashes when started, in one of the ubuntu based linux box :

# uname -a

Linux  3.14.0-rc8 #1 SMP Wed Jul 1 09:53:38 PDT 2015 x86_64 GNU/Linux

#lsb_release -a

No LSB modules are available.

Distributor ID: Debian

Description:    Debian GNU/Linux 8.0 (jessie)

Release:        8.0

Codename:       jessie

# drone &

[1] 3158

root# Retrieving the device list from the local machine

0. eth0

cap file = /tmp/qt_temp.TJ3158

adding dev to all ports list <eth0>

1. any

 (Pseudo-device that captures on all interfaces)

cap file = /tmp/qt_temp.XM3158

adding dev to all ports list <any>

2. lo

cap file = /tmp/qt_temp.Lh3158

adding dev to all ports list <lo>

3. nflog

 (Linux netfilter log (NFLOG) interface)

Error setting direction(0) nflog: Setting direction is not implemented on this platform

PortMonitor: Error opening port nflog: nflog: Can't listen on group group index: Operation not permitted

PortTransmitter: Error opening port nflog: nflog: Can't listen on group group index: Operation not permitted

cap file = /tmp/qt_temp.nS3158

adding dev to all ports list <nflog>

PortManager: unable to open nflog. Skipping!

In ~LinuxPort

In ~PcapPort

3. nfqueue

 (Linux netfilter queue (NFQUEUE) interface)

Error setting direction(0) nfqueue: Setting direction is not implemented on this platform

PortMonitor: Error opening port nfqueue: nfqueue: Can't listen on group group index: Operation not permitted

PortTransmitter: Error opening port nfqueue: nfqueue: Can't listen on group group index: Operation not permitted

cap file = /tmp/qt_temp.kn3158

adding dev to all ports list <nfqueue>

PortManager: unable to open nfqueue. Skipping!

In ~LinuxPort

In ~PcapPort

3. usbmon1

 (USB bus number 1)

PortMonitor: Error opening port usbmon1: usbmon1: Can't open USB bus file /sys/kernel/debug/usbmon/1t: No such file or directory

PortMonitor: Error opening port usbmon1: usbmon1: Can't open USB bus file /sys/kernel/debug/usbmon/1t: No such file or directory

PortTransmitter: Error opening port usbmon1: usbmon1: Can't open USB bus file /sys/kernel/debug/usbmon/1t: No such file or directory

cap file = /tmp/qt_temp.Ti3158

adding dev to all ports list <usbmon1>

PortManager: unable to open usbmon1. Skipping!

In ~LinuxPort

In ~PcapPort

3. usbmon2

 (USB bus number 2)

PortMonitor: Error opening port usbmon2: usbmon2: Can't open USB bus file /sys/kernel/debug/usbmon/2t: No such file or directory

PortMonitor: Error opening port usbmon2: usbmon2: Can't open USB bus file /sys/kernel/debug/usbmon/2t: No such file or directory

PortTransmitter: Error opening port usbmon2: usbmon2: Can't open USB bus file /sys/kernel/debug/usbmon/2t: No such file or directory

cap file = /tmp/qt_temp.wZ3158

adding dev to all ports list <usbmon2>

PortManager: unable to open usbmon2. Skipping!

In ~LinuxPort

In ~PcapPort

3. usbmon3

 (USB bus number 3)

PortMonitor: Error opening port usbmon3: usbmon3: Can't open USB bus file /sys/kernel/debug/usbmon/3t: No such file or directory

PortMonitor: Error opening port usbmon3: usbmon3: Can't open USB bus file /sys/kernel/debug/usbmon/3t: No such file or directory

PortTransmitter: Error opening port usbmon3: usbmon3: Can't open USB bus file /sys/kernel/debug/usbmon/3t: No such file or directory

cap file = /tmp/qt_temp.TT3158

adding dev to all ports list <usbmon3>

PortManager: unable to open usbmon3. Skipping!

In ~LinuxPort

In ~PcapPort

nlmsg_flags = 301

netlink required buffer size = 3556

buffer size 3556 enough for netlink

if: lo(1)

if: bond0(2)

[1]+  Segmentation fault      drone

Any clues, how to debug this ?

Used the latest sources to build the drone.

Regards,

Lucky

[Lucky]

# ldd /usr/local/bin/drone

        linux-vdso.so.1 (0x00007fff45fd5000)

        libpcap.so.0.8 => /usr/lib/x86_64-linux-gnu/libpcap.so.0.8 (0x00007fd5a0a6e000)

        libprotobuf.so.9 => /usr/local/lib/libprotobuf.so.9 (0x00007fd5a075e000)

        libQtScript.so.4 => /usr/lib/x86_64-linux-gnu/libQtScript.so.4 (0x00007fd5a02aa000)

        libQtNetwork.so.4 => /usr/lib/x86_64-linux-gnu/libQtNetwork.so.4 (0x00007fd59ff59000)

        libQtCore.so.4 => /usr/lib/x86_64-linux-gnu/libQtCore.so.4 (0x00007fd59fa6a000)

        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fd59f84c000)

        libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fd59f541000)

        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fd59f240000)

        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fd59f029000)

        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fd59ec80000)

        libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fd59ea65000)

        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fd59e860000)

        libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007fd59e551000)

        librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007fd59e349000)

        /lib64/ld-linux-x86-64.so.2 (0x00007fd5a0cc1000)

        libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007fd59e0da000)

[Srivats P]

Lucky,

Since you are building from source, build drone with debug symbols -

* make distclean
* qmake -config debug
* make

Then run drone via gdb and provide backtrace

Srivats



Srivats

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[Lucky]

(gdb) bt

#0  __strcmp_ssse3 () at ../sysdeps/x86_64/multiarch/../strcmp.S:209

#1  0x0000000000417ddb in LinuxPort::StatsMonitor::netlinkStats (this=0x712610) at linuxport.cpp:569

#2  0x0000000000416ea4 in LinuxPort::StatsMonitor::run (this=0x712610) at linuxport.cpp:160

#3  0x00007ffff6c1570f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4

#4  0x00007ffff69840a4 in start_thread (arg=0x7ffff260b700) at pthread_create.c:309

#5  0x00007ffff5e9704d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Regards,

Lucky

[Srivats P]

The crash is happening on this line in linuxport.cpp -

qDebug("if: %s(%d)", ifname, ifi->ifi_index);
foreach(LinuxPort* port, allPorts_)
{
if (strcmp(port->name(), ifname) == 0) <<<<<<<<<<
{
portStats[uint(ifi->ifi_index)] = &(port->stats_);
portMaxStatsValue[uint(ifi->ifi_index)] = &(port->maxStatsValue_);

Looking at the code and the output that you had originally sent, I
can't find anything obviously wrong.

Please use gdb to examine the values of port->name() and ifname

Srivats

[Lucky]

Yes, as a quick work around, I added if ( (port != NULL) && (port->name() !=NULL) && strcmp(port->name(), ifname) == 0).

Would debug further and see why name is NULL.

Regards,

Lucky

[Srivats P]

Lucky,

Were you able to find why port was NULL?

Srivats

[Lucky]

Sorry Srivats, I left the company I was working earlier, and couldn't debug this before I left.

The guy who is working on this now reached me couple of weeks back. I would check with him if he can verify this.

Regards,

Lucky

[Srivats P]

No problem, Lucky. I found the problem - see
https://groups.google.com/forum/#!topic/ostinato/NVNGltYVobw

Srivats