Memory leak found for network initiated detach procedure

[rsarwad]

Your Environment

• **Version: Master code base
• **Affected Component: Access Gateway
• **Affected Subcomponent: MME service
• **Deployment Environment: Local Vagrant setup

Describe the Issue

Memory leak is observed while executing s1ap sanity test suite. From trace it appears that the leak is observed for network initiated detach procedure. Below is the back trace

Jun 15 12:03:23 magma-dev-focal mme[1182337]: =================================================================
Jun 15 12:03:23 magma-dev-focal mme[1182337]: ==1182337==ERROR: LeakSanitizer: detected memory leaks
Jun 15 12:03:23 magma-dev-focal mme[1182337]: Direct leak of 120 byte(s) in 1 object(s) allocated from:
Jun 15 12:03:23 magma-dev-focal mme[1182337]: #0 0x7f5f1e5c7dc6 in calloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10ddc6)
Jun 15 12:03:23 magma-dev-focal mme[1182337]: #1 0x55e96891e3f4 in mme_app_handle_nw_init_ded_bearer_actv_req /home/vagrant/magma/lte/gateway/c/core/oai/tasks/mme_app/mme_app_bearer.c:3207
Jun 15 12:03:23 magma-dev-focal mme[1182337]: #2 0x55e9688dbeef in handle_message /home/vagrant/magma/lte/gateway/c/core/oai/tasks/mme_app/mme_app_main.c:372
Jun 15 12:03:23 magma-dev-focal mme[1182337]: #3 0x7f5f1d7ca5c6 in zloop_start (/lib/x86_64-linux-gnu/libczmq.so.4+0x295c6)
Jun 15 12:03:23 magma-dev-focal mme[1182337]: Direct leak of 48 byte(s) in 1 object(s) allocated from:
Jun 15 12:03:23 magma-dev-focal mme[1182337]: #0 0x7f5f1e5c7dc6 in calloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10ddc6)
Jun 15 12:03:23 magma-dev-focal mme[1182337]: #1 0x7f5f1d7c5c0f in zlist_new (/lib/x86_64-linux-gnu/libczmq.so.4+0x24c0f)
Jun 15 12:03:23 magma-dev-focal mme[1182337]: Indirect leak of 560 byte(s) in 1 object(s) allocated from:
Jun 15 12:03:23 magma-dev-focal mme[1182337]: #0 0x7f5f1e5c7dc6 in calloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10ddc6)
Jun 15 12:03:23 magma-dev-focal mme[1182337]: #1 0x55e96891df10 in mme_app_handle_nw_init_ded_bearer_actv_req /home/vagrant/magma/lte/gateway/c/core/oai/tasks/mme_app/mme_app_bearer.c:3188
Jun 15 12:03:23 magma-dev-focal mme[1182337]: #2 0x55e9688dbeef in handle_message /home/vagrant/magma/lte/gateway/c/core/oai/tasks/mme_app/mme_app_main.c:372
Jun 15 12:03:23 magma-dev-focal mme[1182337]: #3 0x7f5f1d7ca5c6 in zloop_start (/lib/x86_64-linux-gnu/libczmq.so.4+0x295c6)
Jun 15 12:03:23 magma-dev-focal mme[1182337]: SUMMARY: AddressSanitizer: 728 byte(s) leaked in 3 allocation(s).
Jun 15 12:03:28 magma-dev-focal systemd[1]: magma@mme.service: Main process exited, code=dumped, status=6/ABRT
Jun 15 12:03:28 magma-dev-focal mme[1185586]: ERROR:root:Failed to write to redis, status Error 111 connecting to 127.0.0.1:6380. Connection refused.
Jun 15 12:03:28 magma-dev-focal mme[1185586]: ERROR:root:Logging exit info instead

[MAAHamid]

down grading the jinja2 version
sudo pip3 install Jinja2==3.0.3
Then stop and start magma service
sudo service magma@* stop
sudo service magma@magmad start

[MAAHamid]

this was reported to wavelabs 5G support before, idk when permanent remedy will be available

[rsarwad]

Hi @MAAHamid, Please find the fixes in PR, #13173
Let me know if you face any issue.

[MAAHamid]

Hi @MAAHamid, Please find the fixes in PR, #13173 Let me know if you face any issue.

thanks for sharing the PR

[voisey]

@rsarwad Can this be closed now that #13173 has been merged?

[rsarwad]

@rsarwad Can this be closed now that #13173 has been merged?

Thank you @voisey for bringing into notice. Sure! I will close