Segmentation fault when enabling sticky host

[aouinizied]

Using ntopng version
v.3.2.171218 [Enterprise/Professional build]
GIT rev: 3.2-stable:36b231667fa7770c1463ad9f0acf8858acbdc798:20171218
Pro rev: r1279
Built on: Ubuntu 16.04.3 LTS
System Id: 877FE07F9206AAF2
Platform: x86_64
Edition: Enterprise
License Type: Demo
Validity: Until Mon Dec 18 17:15:57 2017
On Ubuntu: 4.10.0-42-generic
Starting ntopng using: sudo ntopng -i enp0s25 --community -v 2 -S local -n 1
Output:
18/Dec/2017 17:04:23 [Ntop.cpp:1485] Setting local networks to 127.0.0.0/8
18/Dec/2017 17:04:23 [Redis.cpp:111] Successfully connected to redis 127.0.0.1:6379@0
18/Dec/2017 17:04:23 [Redis.cpp:111] Successfully connected to redis 127.0.0.1:6379@0
18/Dec/2017 17:04:28 [PcapInterface.cpp:88] Reading packets from interface enp0s25...
18/Dec/2017 17:04:28 [Ntop.cpp:1612] Registered interface enp0s25 [id: 0]
18/Dec/2017 17:04:28 [main.cpp:301] PID stored in file /var/run/ntopng.pid
18/Dec/2017 17:04:28 [HTTPserver.cpp:841] Please read https://github.com/ntop/ntopng/blob/dev/doc/README.SSL if you want to enable SSL.
18/Dec/2017 17:04:28 [Utils.cpp:457] User changed to nobody
18/Dec/2017 17:04:28 [HTTPserver.cpp:912] Web server dirs [/usr/share/ntopng/httpdocs][/usr/share/ntopng/scripts]
18/Dec/2017 17:04:28 [HTTPserver.cpp:915] HTTP server listening on port(s) 3000
18/Dec/2017 17:04:28 [main.cpp:383] Working directory: /var/tmp/ntopng
18/Dec/2017 17:04:28 [main.cpp:385] Scripts/HTML pages directory: /usr/share/ntopng
18/Dec/2017 17:04:28 [Ntop.cpp:385] Welcome to ntopng x86_64 v.3.2.171218 - (C) 1998-17 ntop.org
18/Dec/2017 17:04:28 [Ntop.cpp:395] Built on Ubuntu 16.04.3 LTS
18/Dec/2017 17:04:28 [Ntop.cpp:677] Adding xxxxx as IPv4 interface address for enp0s25
18/Dec/2017 17:04:28 [Ntop.cpp:685] Adding xxxxx as IPv4 local network for enp0s25
18/Dec/2017 17:04:28 [Ntop.cpp:704] Adding xxxx as IPv6 interface address for enp0s25
18/Dec/2017 17:04:28 [Ntop.cpp:713] Adding xxxxx as IPv6 local network for enp0s25
18/Dec/2017 17:04:28 [PeriodicActivities.cpp:59] Started periodic activities loop...
18/Dec/2017 17:04:28 [PeriodicActivities.cpp:100] Each periodic activity script will use 2 threads
18/Dec/2017 17:04:28 [NetworkInterface.cpp:2326] Started packet polling on interface enp0s25 [id: 0]...
Erreur de segmentation

I tried it without '-S' and it's working. Also, I tried sevral value of -S and stil get the seg fault.
Any Idea?

Best regards,

[emanuele-f]

Hi, can you please run ntopng with gdb --args ntopng -i enp0s25 --community -v 2 -S local -n 1 and post a backtrace of the segmentation fault? You can do this with bt command from gdb, after the program crashes

[emanuele-f]

Crash trace:

Thread 25 "ntopng" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffb97fa700 (LWP 15768)]
0x00005555555bbb5a in Mac::getDeviceType (this=0x0) at /home/emanuele/src/ntopng/include/Mac.h:103
103	  inline DeviceType getDeviceType()        { return (device_type); }
(gdb) bt
#0  0x00005555555bbb5a in Mac::getDeviceType() (this=0x0) at /home/emanuele/src/ntopng/include/Mac.h:103
#1  0x00005555555dd1fe in Flow::updateFlowShapers() (this=0x7fffb0001720) at src/Flow.cpp:2747
#2  0x00005555555d38b0 in Flow::setDetectedProtocol(ndpi_proto, bool) (this=0x7fffb0001720, proto_id=..., forceDetection=false) at src/Flow.cpp:468
#3  0x00005555555ea263 in NetworkInterface::processPacket(unsigned int, bool, timeval const*, unsigned long, ndpi_ethhdr*, unsigned short, ndpi_iphdr*, ndpi_ipv6hdr*, unsigned short, unsigned int, pcap_pkthdr const*, unsigned char const*, unsigned short*, Host**, Host**, Flow**) (this=0x555555a05bb0, bridge_iface_idx=1, ingressPacket=true, when=0x555556960100, packet_time=1514275062543, eth=0x555556960210, vlan_id=0, iph=0x55555696021e, ip6=0x0, ipsize=71, rawsize=85, h=0x555556960100, packet=0x555556960210 "\274\025\254\240\344\322\060R\313l\234\033\b", ndpiProtocol=0x7fffb97f9606, srcHost=0x7fffb97f9620, dstHost=0x7fffb97f9628, hostFlow=0x7fffb97f9630) at src/NetworkInterface.cpp:1632
#4  0x00005555555ec01d in NetworkInterface::dissectPacket(unsigned int, bool, unsigned char*, pcap_pkthdr const*, unsigned char const*, unsigned short*, Host**, Host**, Flow**) (this=0x555555a05bb0, bridge_iface_idx=1, ingressPacket=true, sender_mac=0x0, h=0x555556960100, packet=0x555556960210 "\274\025\254\240\344\322\060R\313l\234\033\b", ndpiProtocol=0x7fffb97f9606, srcHost=0x7fffb97f9620, dstHost=0x7fffb97f9628, flow=0x7fffb97f9630) at src/NetworkInterface.cpp:2167
#5  0x00005555555a84a8 in packetPollLoop(void*) (ptr=0x555555a05bb0) at src/PcapInterface.cpp:193
#6  0x00007ffff679b08a in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007ffff397942f in clone () at /usr/lib/libc.so.6

[emanuele-f]

@aouinizied The above crash is fixed with commit df7a7c6 . A new package will be available in one hour. Please update and let me know.

[simonemainardi]

as already pointed out issue has been fixed 10 days ago with commit df7a7c6 so it is safe to close the issue now.