SEG FAULT when executing a 'get' request

[igortern]

Hi,

I encountered the following issue:

• netopeer2, libnetconf, sysrepo, libyang from devel, snapshot taken on Sep 29
• sysrepo repository is attached
• the following get request caused crash

Regards,
Igor

sysrepo.tar.gz

[INF]: LN: Session 1: received message:
<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="1">
<get>
<filter>
<manageEvent:netconf xmlns:manageEvent="urn:ietf:params:xml:ns:netmod:notification"/>
</filter>
</get>
</rpc>


[INF]: LY: Resolving unresolved data nodes and their constraints...
[INF]: LY: All data nodes and constraints resolved.
[INF]: LY: Resolving unresolved data nodes and their constraints...
[INF]: LY: All data nodes and constraints resolved.
[INF]: SR: Successful processing of "operational" event with ID 1.
[INF]: SR: Event "operational" with ID 1 succeeded.
[INF]: SR: Published event "operational" "/ietf-interfaces:interfaces-state/interface" with ID 1.
[INF]: SR: Event "operational" with ID 1 succeeded.
[INF]: SR: Published event "operational" "/ietf-hardware:hardware-state/component" with ID 1.
[INF]: SR: Published event "operational" "/ietf-netconf-acm:nacm/denied-operations" with ID 2.
[INF]: SR: Processing "ietf-netconf-acm" "operational" event with ID 2.
[INF]: SR: Successful processing of "operational" event with ID 2.
[INF]: SR: Event "operational" with ID 1 succeeded.
[INF]: SR: Event "operational" with ID 2 succeeded.
[INF]: SR: Published event "operational" "/ietf-netconf-acm:nacm/denied-data-writes" with ID 2.
[INF]: SR: Processing "ietf-netconf-acm" "operational" event with ID 2.
[INF]: SR: Successful processing of "operational" event with ID 2.
[INF]: SR: Event "operational" with ID 2 succeeded.
[INF]: SR: Published event "operational" "/ietf-netconf-acm:nacm/denied-notifications" with ID 2.
[INF]: SR: Processing "ietf-netconf-acm" "operational" event with ID 2.
[INF]: SR: Successful processing of "operational" event with ID 2.
[INF]: SR: Event "operational" with ID 2 succeeded.
[INF]: SR: Published event "operational" "/ietf-netconf-monitoring:netconf-state" with ID 2.
[INF]: SR: Processing "ietf-netconf-monitoring" "operational" event with ID 2.
[INF]: SR: Successful processing of "operational" event with ID 2.
[INF]: SR: Event "operational" with ID 2 succeeded.

Thread 7 "netopeer2-serve" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff21b5700 (LWP 18405)]
lys_parent (node=node@entry=0x81ad90) at /home/igort/Perforce/OLT/aspen/main/build/host-sim/third_party/libyang/libyang-devel/src/tree_schema.c:4184
4184 if (parent->nodetype == LYS_AUGMENT) {
(gdb) bt
#0 lys_parent (node=node@entry=0x81ad90)
at /home/igort/Perforce/OLT/aspen/main/build/host-sim/third_party/libyang/libyang-devel/src/tree_schema.c:4184
#1 0x00007ffff743c81d in lyd_new (parent=0x0, module=0x81aea0, name=)
at /home/igort/Perforce/OLT/aspen/main/build/host-sim/third_party/libyang/libyang-devel/src/tree_data.c:1197
#2 0x00007ffff7161d84 in sr_lyd_create_np_cont_r (first=0x7ffff21b4bb8, parent=0x0, ly_mod=0x81ad90, config_f=0x2, diff=0x0)
at /home/igort/Perforce/OLT/aspen/main/build/host-sim/third_party/sysrepo/sysrepo-devel/src/common.c:3425
#3 0x00007ffff71622fd in sr_lyd_dup_module_np_cont (data=0x64cee0, ly_mod=0x81ad90, add_state_np_conts=0x1, new_data=0x7ffff21b4bb8)
at /home/igort/Perforce/OLT/aspen/main/build/host-sim/third_party/sysrepo/sysrepo-devel/src/common.c:3541
#4 0x00007ffff7168439 in sr_module_oper_data_dup_enabled (data=0x64cee0, ext_shm_addr=0x7ffff7fb8000 "8\017", mod=0x7fffdc021448, opts=0x0,
enabled_mod_data=0x7ffff21b4bb8) at /home/igort/Perforce/OLT/aspen/main/build/host-sim/third_party/sysrepo/sysrepo-devel/src/modinfo.c:685
#5 0x00007ffff716a33f in sr_modinfo_module_data_load (mod_info=0x7ffff21b4d70, mod=0x7fffdc021448, sid=0x7ffff21b4ce0, request_xpath=0x0,
timeout_ms=0x1388, opts=0x0, cb_error_info=0x7ffff21b4cb0)
at /home/igort/Perforce/OLT/aspen/main/build/host-sim/third_party/sysrepo/sysrepo-devel/src/modinfo.c:1323
#6 0x00007ffff716ad3b in sr_modinfo_data_load (mod_info=0x7ffff21b4d70, cache=0x4, sid=0x7ffff21b4ce0, request_xpath=0x0, timeout_ms=0x1388,
opts=0x0, cb_error_info=0x7ffff21b4cb0)
at /home/igort/Perforce/OLT/aspen/main/build/host-sim/third_party/sysrepo/sysrepo-devel/src/modinfo.c:1566
#7 0x00007ffff716b026 in sr_modinfo_add_modules (mod_info=0x7ffff21b4d70, mod_set=0x7ffff21b4d60, mod_deps=0x0, mod_lock=SR_LOCK_READ,
mi_opts=0x25, sid=..., request_xpath=0x0, timeout_ms=0x1388, get_opts=0x0)
at /home/igort/Perforce/OLT/aspen/main/build/host-sim/third_party/sysrepo/sysrepo-devel/src/modinfo.c:1649
#8 0x00007ffff715771e in sr_event_notif_send_tree (session=0x640130, notif=0x7fffdc01eec0)
at /home/igort/Perforce/OLT/aspen/main/build/host-sim/third_party/sysrepo/sysrepo-devel/src/sysrepo.c:4660
#9 0x00007ffff71571ad in sr_event_notif_send (session=0x640130, path=0x41a858 "/ietf-netconf-notifications:netconf-session-start",
values=0x7fffdc01ee50, values_cnt=0x3) at /home/igort/Perforce/OLT/aspen/main/build/host-sim/third_party/sysrepo/sysrepo-devel/src/sysrepo.c:4572
#10 0x000000000040afb7 in np2srv_new_session_cb (UNUSED_client_name=0x0, new_session=0x7fffdc000e30)
at /home/igort/Perforce/OLT/aspen/main/build/host-sim/third_party/netopeer2/netopeer2-devel/src/common.c:189
#11 0x00000000004099c9 in worker_thread (arg=0x6487b0)
at /home/igort/Perforce/OLT/aspen/main/build/host-sim/third_party/netopeer2/netopeer2-devel/src/main.c:997
#12 0x00007ffff76c76db in start_thread (arg=0x7ffff21b5700) at pthread_create.c:463
#13 0x00007ffff6e75a3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb)

[igortern]

re-posting the NETCONF request that caused the crash
[INF]: LN: Session 1: received message:
<hello xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
<capabilities>
<capability>urn:ietf:params:netconf:base:1.0</capability>
</capabilities>
</hello>

[michalvasko]

Hi,
right, thanks for the exact files to reproduce, I think this is the bug I was not able to track down for some time now. Should be fixed in sysrepo devel now.

[igortern]

Great, thanks Michal