netopeer2 Netopeer2-server core

Hi @michalvasko,

We are using the mentioned versions of netopeer2 and dependent libraries. We are facing some crash intermittently; However, debug symbols are not enabled in the system. Would it be possible to rpovide some insight with the existing limited data?

libnetconf2 2.1.31 libssh 0.8.4 libyang 2.1.55 sysrepo 2.2.60 netopeer2-server 2.1.59

Thanks in advance!

Server Logs before crash:

2023-09-19 11:44:10.301854 info netopeer2-server[1266]: Timed out after 500 ms (Operation now in progress). 2023-09-19 11:44:12.302019 info netopeer2-server[1266]: Trying to connect the pending socket 48. 2023-09-19 11:44:12.302454 info netopeer2-server[1266]: Session 326 (user "root", CID 112) created. 2023-09-19 11:44:12.360284 info netopeer2-server[1266]: Received an SSH message "request-service" of subtype "ssh-userauth". 2023-09-19 11:44:12.363430 info netopeer2-server[1266]: Received an SSH message "request-auth" of subtype "publickey". 2023-09-19 11:44:12.363781 info netopeer2-server[1266]: Failed user "root" authentication attempt (#1). 2023-09-19 11:44:12.364281 info netopeer2-server[1266]: Received an SSH message "request-service" of subtype "ssh-userauth". 2023-09-19 11:44:12.364706 info netopeer2-server[1266]: Received an SSH message "request-auth" of subtype "password". 2023-09-19 11:44:12.373855 info netopeer2-server[1266]: User "root" authenticated. 2023-09-19 11:44:12.374668 info netopeer2-server[1266]: Received an SSH message "request-channel-open" of subtype "session". 2023-09-19 11:44:12.375209 info netopeer2-server[1266]: Received an SSH message "request-channel" of subtype "subsystem". 2023-09-19 11:44:12.377611 info netopeer2-server[1266]: Call Home client "vlan_client_192.168.11.35" session 11 established. 2023-09-19 11:44:12.377991 info netopeer2-server[1266]: Session 327 (user "root", CID 112) created. 2023-09-19 11:44:12.378217 err netopeer2-server[1266]: Invalid union value "" - no matching subtype found. (Schema location "/ietf-netconf-notifications:netconf-session-start/source-host".) 2023-09-19 11:44:12.378251 warning netopeer2-server[1266]: Failed to send a notification (libyang error). 2023-09-19 11:44:12.479430 info netopeer2-server[1266]: EV ORIGIN: "/ietf-netconf:get-config" "rpc" ID 4 priority 0 for 1 subscribers published. 2023-09-19 11:44:12.479775 info netopeer2-server[1266]: EV LISTEN: "/ietf-netconf:get-config" "rpc" ID 4 priority 0 processing (remaining 1 subscribers). 2023-09-19 11:44:12.491817 info netopeer2-server[1266]: EV LISTEN: "/ietf-netconf:get-config" "rpc" ID 4 priority 0 success (remaining 0 subscribers). 2023-09-19 11:44:12.491928 info netopeer2-server[1266]: EV ORIGIN: "/ietf-netconf:get-config" "rpc" ID 4 priority 0 succeeded. 2023-09-19 11:44:12.520553 info netopeer2-server[1266]: Session 11: thread 2 event new RPC. 2023-09-19 11:44:12.704853 info netopeer2-server[1266]: Session 11: thread 1 event new RPC. 2023-09-19 11:44:12.704897 info netopeer2-server[1266]: Session 11: thread 1 event session terminated. 2023-09-19 11:44:12.705595 err netopeer2-server[1266]: Invalid union value "" - no matching subtype found. (Schema location "/ietf-netconf-notifications:netconf-session-end/source-host".) 2023-09-19 11:44:12.705641 warning netopeer2-server[1266]: Failed to send a notification (libyang error). 2023-09-19 11:44:12.705825 info netopeer2-server[1266]: Call Home client "vlan_client_192.168.11.35" session terminated. 2023-09-19 11:44:12.705873 info netopeer2-server[1266]: Trying to connect via IPv4 to 192.168.11.35:4334. 2023-09-19 11:44:12.706253 info netopeer2-server[1266]: getsockopt() error (Connection refused).

BT available

#0 __pthread_kill_internal (threadid=, signo=signo@entry=6) at pthread_kill.c:45 45 pthread_kill.c: No such file or directory. [Current thread is 1 (Thread 0xffffacabbee0 (LWP 1349))] (gdb) bt #0 __pthread_kill_internal (threadid=, signo=signo@entry=6) at pthread_kill.c:45 #1 0x0000ffffaea25cc4 in __GI___pthread_kill (threadid=, signo=signo@entry=6) at pthread_kill.c:62 #2 0x0000ffffae9e1c10 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26 #3 0x0000ffffae9cee08 in __GI_abort () at abort.c:100 #4 0x0000ffffaea19cc8 in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0xffffaeaf6d00 "%s\n") at ../sysdeps/posix/libc_fatal.c:155 #5 0x0000ffffaea2ff50 in malloc_printerr (str=str@entry=0xffffaeaf20f0 "free(): invalid pointer") at malloc.c:5543 #6 0x0000ffffaea31780 in _int_free (av=0xffffaeb3ca60 <main_arena>, p=0xffff94003190, have_lock=) at malloc.c:4326 #7 0x0000ffffaea345a0 in __GI___libc_free (mem=) at malloc.c:3278 #8 0x0000ffffaee38ff0 in nc_session_free () from /usr/lib/libnetconf2.so.3 #9 0x0000aaaac7832b38 in ?? () #10 0x0000ffffaea24168 in start_thread (arg=) at pthread_create.c:434 #11 0x0000ffffaea8ac1c in thread_start () at ../sysdeps/unix/sysv/linux/aarch64/clone.S:79 (gdb) thread 2

Sep 19 '23 12:09 ankit7gup

No, there is no usable information in the gdb output nor netopeer2 output. However, I am quite sure the printed errors have been fixed in libyang. I would suggest updating everything to the latest release and it may just work.

Sep 19 '23 12:09 michalvasko

ok, Thanks for this info. For us it won't be possible to plan a complete upgrade. By any chance, would it be possible to provide a commit reference so we can try a code path on our existing version.

Thanks Again!

Sep 19 '23 13:09 ankit7gup

No, sorry, I do not know the exact commit and it is not certain a single one would be enough.

Sep 19 '23 13:09 michalvasko