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srsran / srsRAN_4G

Open source SDR 4G software suite from Software Radio Systems (SRS) https://docs.srsran.com/projects/4g
https://www.srsran.com
GNU Affero General Public License v3.0
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srsRAN crashed... "Error binding SCTP socket" #686

Closed lamom92 closed 3 years ago

lamom92 commented 3 years ago

Hello,

I compiled srsran from git (commit 89f16eed2 on branch master) I try to launch srsepc and the soft crash during the initialization.

_$ sudo srsepc

Built in Release mode using commit 89f16eed2 on branch master.

--- Software Radio Systems EPC ---

Reading configuration file /root/.config/srsran/epc.conf... HSS Initialized. Error binding SCTP socket MME S11 Initialized MME GTP-C Initialized MME Initialized. MCC: 0xf001, MNC: 0xff01 SPGW GTP-U Initialized. SPGW S11 Initialized. SP-GW Initialized. buffer overflow detected : terminated srsRAN crashed... backtrace saved in './srsRAN.backtrace.crash'... --- exiting ---_

In the debug file srsRAN.backtrace.crash, there is

--- command='srsepc' version=21.04.0 signal=6 date='21/06/2021 21:14:17' --- srsepc(+0x18ab5f) [0x5604be57eb5f] /lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7f7e7e62f210] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb) [0x7f7e7e62f18b] /lib/x86_64-linux-gnu/libc.so.6(abort+0x12b) [0x7f7e7e60e859] /lib/x86_64-linux-gnu/libc.so.6(+0x903ee) [0x7f7e7e6793ee] /lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x2a) [0x7f7e7e71bb4a] /lib/x86_64-linux-gnu/libc.so.6(+0x1313e6) [0x7f7e7e71a3e6] /lib/x86_64-linux-gnu/libc.so.6(+0x132a8b) [0x7f7e7e71ba8b] srsepc(+0x3ba5d) [0x5604be42fa5d] srsepc(+0x2fe7d) [0x5604be423e7d] /lib/x86_64-linux-gnu/libpthread.so.0(+0x9609) [0x7f7e7ec28609] /lib/x86_64-linux-gnu/libc.so.6(clone+0x43) [0x7f7e7e70b293]

I don't understand the issue.

Thank you for your help.

andrepuschmann commented 3 years ago

I agree we should cleanly exit in this case. But the underlaying cause of the issue is the SCTP port 36412 being used from someone else. Anything else running?

lamom92 commented 3 years ago

Thank you, with your help, I succeed to solve the problem, the issue is that open5gs-mmed was using the same port 36412.

to list the process that is using port 36412, I did:

$ sudo netstat -lpn | grep :36412 sctp 127.0.1.100:36412 LISTEN 800/open5gs-mmed

I uninstall open5gs-mme (I'm not using anymore open5gs as a core) $ sudo apt-get remove open5gs-mme