Getting Segmentation Fault with v3.0.4

Q/A
#1

Hi,

I am getting segmentation fault on executing “./test.sh TestRegistration” with free5gc v3.0.4
Please note that I am not executing N3IWF.
v3.0.4_pcap.pcapng (362.0 KB) v3.0.4_segv_logs.txt (26.0 KB) logs_pcaps.zip (68.7 KB)
root@ubuntu:/home/free5gc# uname -r
5.0.0-23-generic

Attaching logs & pcap.
Please let me know if you need any other information.

Thanks,
Rashmi

#2

Hi,

Do you insert the gtp5g module?

#3

Yes, I have inserted gtp5g module with below commands:
git clone -b v0.2.0 https://github.com/PrinzOwO/gtp5g.git
cd gtp5g
make
sudo make install

Thanks,
Rashmi

#5

Seems two error on your host,

  1. Epoll Wait error : Invalid argument on UPF
  2. dial error with connection refuse.

What OS are you using? Have you close the firewall?

#6

Hi,

I am using VM with Ubuntu 18.04 and firewall is inactive.

Please see logs below:
root@ubuntu:~/free5gc# lsmod | grep gtp5g
gtp5g 36864 0
udp_tunnel 16384 1 gtp5g

root@ubuntu:~/free5gc# cd lib/libgtp5gnl/tools
bash: cd: lib/libgtp5gnl/tools: No such file or directory

root@ubuntu:~/free5gc# ufw status
Status: inactive

I am running vis ./run.sh and each component is unable to register with NRF.
Request you to help in resolving the issue.
PFA logs with latest run.free5gc_logs_4_oct.txt (30.9 KB)

Let me know if I am missing something.

Thanks,
Rashmi

#7

The error has changed now.

HTTP server setup failed: listen tcp 127.0.0.1:29510: bind: address already in use

Please check which process is binding on the port and kill it.

#8

Hello,

Thank you so much for your reply. Really appreciate your help.
PFA logs with latest run.

I checked and only nrf is binding on port 29510.
root@ubuntu:~/free5gc# ss -lntp
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN0 128 127.0.0.1:29531 0.0.0.0:* users:((“nssf”,pid=38012,fd=31))
LISTEN0 128 127.0.0.1:29502 0.0.0.0:* users:((“smf”,pid=38008,fd=32))
LISTEN0 128 127.0.0.1:29503 0.0.0.0:* users:((“udm”,pid=38011,fd=30))
LISTEN0 128 127.0.0.1:29504 0.0.0.0:* users:((“udr”,pid=38009,fd=33))
LISTEN0 128 127.0.0.1:29507 0.0.0.0:* users:((“pcf”,pid=38010,fd=32))
LISTEN0 128 127.0.0.1:29509 0.0.0.0:* users:((“ausf”,pid=38013,fd=30))
LISTEN0 128 127.0.0.1:29510 0.0.0.0:* users:((“nrf”,pid=38006,fd=32))
LISTEN0 128 127.0.0.1:27017 0.0.0.0:* users:((“mongod”,pid=862,fd=11))
LISTEN0 128 127.0.0.1:29518 0.0.0.0:* users:((“amf”,pid=38007,fd=34))
LISTEN0 128 127.0.0.53%lo:53 0.0.0.0:* users:((“systemd-resolve”,pid=629,fd=13))
LISTEN0 5 127.0.0.1:631 0.0.0.0:* users:((“cupsd”,pid=2761,fd=7))
LISTEN0 128 :5000 : users:((“server”,pid=2991,fd=32))
LISTEN0 5 [::1]:631 [::]: users:((“cupsd”,pid=2761,fd=6))
root@ubuntu:~/free5gc#

I am following below steps after installation mentioned in Readme.md of v3.0.4 to run & test UE registration with free5GC.
Can you please check and let me know if this is correct ?

Step 1 : First execute “./run.sh” to run the core
Step 2 : Immediately execute “./test.sh TestRegistration” after “./run.sh” to test UE registration with free5gc

I am seeing below error after executing ./run.sh

2020/10/05 06:38:48 http2: server connection error from 127.0.0.1:47448: connection error: PROTOCOL_ERROR
[WARN][PCF][Init] AMF status subscribe Error[http://127.0.0.1:29518: server no response]

I can successful PFCP association in the pcap.

Thanks,
Rashmi

logs_test_registration.txt (2.7 KB) logs_run_sh.txt (27.0 KB)

#9

You don’t need to run ./run.sh before test. The test script will bring up NFs automatically.

#10

I see. Thanks for the immediate reply.
Really appreciate it.

I just ran “./test.sh TestRegistration” and getting following on webconsole.

image
image1600×546 57.5 KB

I can see PFCP Association Request-Response, Establishment Request-Response and Modification Request-Response in the pcap.

How can I check if the UE registered properly & can send data over it.
Can you please help here?
Attaching the latest logs for reference.
ue_reg_logs.txt (27.2 KB)
Thanks,
Rashmi

#11

There is ping procedure at the end of the test.

Check if the ping request and response is sent and received successfully.

#12

Yes, I can see ping request and response.
Any idea why webconsole is throwing an error as shared in screenshot above?

Thanks,
Rashmi

#13

Hi Team,

Can you please help me to understand why I am getting below error on webconsole?

I just ran “./test.sh TestRegistration” and getting following on webconsole.

"Error fetching registered UEs. Is core network up ?

image
image1380×470 25.6 KB

Thank you.

Regards,
Rashmi

#14

The test will end immediately after finish the procedure. You should add some pending after the registration so that web console can catch the status.