mgmtd crashed when show mgmt get-config cmd is used.

[gpnaveen]

Build Oct 27:

frr# show run Building configuration...

Current configuration: ! frr version 8.2-dev-MyDebPkgVersion frr defaults traditional hostname frr log syslog informational no ipv6 forwarding service integrated-vtysh-config ! ip route 192.1.1.1/32 Null0 ! end frr# exit

root@frr:/home/naveen/ci/mgmt_auto/frr/tests/topotests/yang_mgmt# /usr/lib/frr/frrinit.sh stop

• Stopped watchfrr
• Cannot stop mgmtd: pid 7690 not running
• Stopped staticd
• Stopped zebra root@frr:/home/naveen/ci/mgmt_auto/frr/tests/topotests/yang_mgmt# /usr/lib/frr/frrinit.sh start
• Started watchfrr root@frr:/home/naveen/ci/mgmt_auto/frr/tests/topotests/yang_mgmt# vtysh

Hello, this is FRRouting (version 8.2-dev-MyDebPkgVersion). Copyright 1996-2005 Kunihiro Ishiguro, et al.

frr# conf t frr(config)# log file FILENAME Logging filename frr(config)# log file mgmt.log

alerts Immediate action needed critical Critical conditions debugging Debugging messages emergencies System is unusable errors Error conditions informational Informational messages notifications Normal but significant conditions warnings Warning conditions frr(config)# log file mgmt.log can't open logfile mgmt.log frr(config)# log file /tmp/mgmt.log frr(config)# end frr# debg % There is no matched command. frr# debug babel Babel information bfd Bidirection Forwarding Detection bgp BGP information eigrp EIGRP information igmp IGMP protocol activity isis IS-IS routing protocol memstats-at-exit Print memory statistics at exit mgmt Management Daemon (MGMTD) information mpls MPLS information mroute PIM interaction with kernel MFC cache msdp MSDP protocol activity mtrace Mtrace protocol activity nhrp NHRP information northbound Northbound debugging openfabric OpenFabric routing protocol ospf OSPF information ospf6 Open Shortest Path First (OSPF) for IPv6 pathd path debugging pbr Policy Based Routing pim PIM protocol activity prefix-list Prefix-list test access resolver Debug DNS resolver actions rfapi-dev RF API debugging/testing command rip RIP information ripng RIPng configuration route-map Debug option set for route-maps rpki Enable debugging for rpki spf-delay-ietf SPF Back-off Debugging ssmpingd ssmpingd activity static Static route daemon vrf VRF Debugging vrrp Virtual Router Redundancy Protocol zebra Zebra configuration frr# debug mgmt all Debug All Functionality backend Debug Backend Functionality database Debug Database Functionality frontend Debug Frontend Functionality transaction Debug Transaction Functionality frr# debug mgmt all frr# conf t frr(config)# show mgmt get-config xpath /frr-routing:routing/control-plane-protocols/control-plane-protocol[type='frr-staticd:staticd' % Unknown command: show mgmt get-config xpath /frr-routing:routing/control-plane-protocols/control-plane-protocol[type='frr-staticd:staticd' frr(config)# do show mgmt get-config xpath /frr-routing:routing/control-plane-protocols/control-plane-protocol[type='frr-staticd:staticd' vtysh: error reading from mgmtd: Success (0)Warning: closing connection to mgmtd because of an I/O error! frr(config)# end Warning: connecting to mgmtd...failed! frr# exit Warning: connecting to mgmtd...failed! root@frr:/home/naveen/ci/mgmt_auto/frr/tests/topotests/yang_mgmt# cat /tmp/mgmt.log 2021/10/27 16:01:09 MGMTD: [Y3TVX-KE7HN] Unlocked DB 2 successfully! 2021/10/27 16:01:23 MGMTD: [SD07F-GYBSK] mgmt_frntnd_adapter_read: Got 22 bytes of message from MGMTD Frontend adapter 'mgmtd-7805' 2021/10/27 16:01:23 MGMTD: [SD07F-GYBSK] mgmt_frntnd_adapter_read: Got -2 bytes of message from MGMTD Frontend adapter 'mgmtd-7805' 2021/10/27 16:01:23 MGMTD: [XKZ2G-VEJPH] mgmt_frntnd_adapter_read: Got message (len: 22) from client 'mgmtd-7805' 2021/10/27 16:01:23 MGMTD: [RJJKW-SGDZB] mgmt_frntnd_adapter_proc_msgbufs: Have 1 ibufs for client 'mgmtd-7805' to process 2021/10/27 16:01:23 MGMTD: [T5DQJ-R96CZ] mgmt_frntnd_adapter_process_msg: Have 22 bytes of messages from client 'mgmtd-7805' to process 2021/10/27 16:01:23 MGMTD: [ZDW3N-JS2KM] mgmt_frntnd_adapter_process_msg: Decoded 22 bytes of message(type: 4/5) from MGMTD Frontend adapter 'mgmtd-7805' 2021/10/27 16:01:23 MGMTD: [XPYXA-6X0CB] mgmt_frntnd_adapter_handle_msg: Got LockDB Req Msg for DB:2 for session-id 14b023427490 from 'mgmtd-7805' 2021/10/27 16:01:23 MGMTD: [WZ8KX-NG91E] mgmt_frntnd_session_write_lock_db: Write-Locked the DB 2 for Sessn: 0x14b023427490 from mgmtd-7805! 2021/10/27 16:01:23 MGMTD: [XEKF7-AK9RY] mgmt_frntnd_send_lockdb_reply: Sending LOCK_DB_REPLY message to MGMTD Frontend client 'mgmtd-7805' 2021/10/27 16:01:23 MGMTD: [KH9NG-X1Z5V] mgmt_frntnd_session_handle_lockdb_req_msg: Failed to send LOCK_DB_REPLY for DB 2 Sessn: 0x14b023427490 from mgmtd-7805 2021/10/27 16:01:23 MGMTD: [X31CA-MCH7G] mgmt_frntnd_adapter_write: Wrote 24 bytes of message to MGMTD Frontend client socket.' 2021/10/27 16:01:23 MGMTD: [Y3TVX-KE7HN] Locked DB 2 successfully! 2021/10/27 16:01:26 MGMTD: [SD07F-GYBSK] mgmt_frntnd_adapter_read: Got 122 bytes of message from MGMTD Frontend adapter 'mgmtd-7805' 2021/10/27 16:01:26 MGMTD: [SD07F-GYBSK] mgmt_frntnd_adapter_read: Got -2 bytes of message from MGMTD Frontend adapter 'mgmtd-7805' 2021/10/27 16:01:26 MGMTD: [XKZ2G-VEJPH] mgmt_frntnd_adapter_read: Got message (len: 122) from client 'mgmtd-7805' 2021/10/27 16:01:26 MGMTD: [RJJKW-SGDZB] mgmt_frntnd_adapter_proc_msgbufs: Have 1 ibufs for client 'mgmtd-7805' to process 2021/10/27 16:01:26 MGMTD: [T5DQJ-R96CZ] mgmt_frntnd_adapter_process_msg: Have 122 bytes of messages from client 'mgmtd-7805' to process 2021/10/27 16:01:26 MGMTD: [ZDW3N-JS2KM] mgmt_frntnd_adapter_process_msg: Decoded 122 bytes of message(type: 11/11) from MGMTD Frontend adapter 'mgmtd-7805' 2021/10/27 16:01:26 MGMTD: [VXPEF-B0ZPP] mgmt_frntnd_adapter_handle_msg: Got Get-Config Req Msg for DB:2 (xpaths: 1) on session-id 22746738357392 from 'mgmtd-7805' 2021/10/27 16:01:26 MGMTD: [VZ3F2-245JH] mgmt_trxn_create_new: Added new 'SHOW' MGMTD Transaction '0x14b02342adf0' 2021/10/27 16:01:26 MGMTD: [M47CN-BCEGV] mgmt_trxn_lock: mgmtd/mgmt_trxn.c:2170 --> Lock SHOW Trxn 0x14b02342adf0, Count: 1 2021/10/27 16:01:26 MGMTD: [NNGJK-ZZQMQ] mgmt_frntnd_session_handle_getcfg_req_msg: Created new Show Trxn 0x14b02342adf0 for session 0x14b023427490 2021/10/27 16:01:26 MGMTD: [WTH61-T2ACQ] mgmt_trxn_req_alloc: Added a new GETCFG Req: 0x14b02342a950 for Trxn: 0x14b02342adf0, Sessn: 0x14b023427490 2021/10/27 16:01:26 MGMTD: [M47CN-BCEGV] mgmt_trxn_lock: mgmtd/mgmt_trxn.c:498 --> Lock SHOW Trxn 0x14b02342adf0, Count: 2 2021/10/27 16:01:26 MGMTD: [HNB4H-0BCVG] mgmt_trxn_send_get_config_req: XPath: '/frr-routing:routing/control-plane-protocols/control-plane-protocol[type='frr-staticd:staticd'' 2021/10/27 16:01:26 MGMTD: [XPR3S-0G9BB] mgmt_trxn_process_get_cfg: Processing 1 GET_CONFIG requests for Trxn:0x14b02342adf0 Session:0x14b023427490 2021/10/27 16:01:26 MGMTD: [V2ZVT-01ZYY] mgmt_trxn_get_config: Trying to get all data under '/frr-routing:routing/control-plane-protocols/control-plane-protocol[type='frr-staticd:staticd'' 2021/10/27 16:01:26 MGMTD: [NPDS4-978B5] mgmt_db_iter_data: -- START DB walk for DBid: 2 2021/10/27 16:01:26 MGMTD: [QM1XN-1YM7F] mgmt_walk_db_nodes: -- START: Base: /frr-routing:routing/control-plane-protocols/control-plane-protocol[type='frr-staticd:staticd' 2021/10/27 16:01:26 MGMTD: libyang: Unexpected XPath expression end. 2021/10/27 16:01:26 MGMTD: lib/yang.c:405: yang_dnode_get(): assertion (0) failed MGMTD: Received signal 6 at 1635375686 (si_addr 0x6700001e7e, PC 0x73ed92034e97); aborting... MGMTD: /usr/lib/x86_64-linux-gnu/frr/libfrr.so.0(zlog_backtrace_sigsafe+0x6d) [0x73ed92dac16d] MGMTD: /usr/lib/x86_64-linux-gnu/frr/libfrr.so.0(zlog_signal+0xf3) [0x73ed92dac363] MGMTD: /usr/lib/x86_64-linux-gnu/frr/libfrr.so.0(+0xd55b1) [0x73ed92ddb5b1] MGMTD: /lib/x86_64-linux-gnu/libpthread.so.0(+0x12890) [0x73ed923f9890] MGMTD: /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7) [0x73ed92034e97] MGMTD: /lib/x86_64-linux-gnu/libc.so.6(abort+0x141) [0x73ed92036801] MGMTD: /usr/lib/x86_64-linux-gnu/frr/libfrr.so.0(_zlog_assert_failed+0xe9) [0x73ed92e06ce9] MGMTD: /usr/lib/x86_64-linux-gnu/frr/libfrr.so.0(+0xf1f64) [0x73ed92df7f64] MGMTD: /usr/lib/frr/mgmtd(+0x21494) [0x14b0214ab494] MGMTD: /usr/lib/frr/mgmtd(mgmt_db_iter_data+0x164) [0x14b0214acba4] MGMTD: /usr/lib/frr/mgmtd(+0x1e25a) [0x14b0214a825a] MGMTD: /usr/lib/frr/mgmtd(+0x1e6d5) [0x14b0214a86d5] MGMTD: /usr/lib/x86_64-linux-gnu/frr/libfrr.so.0(thread_call+0x7d) [0x73ed92debe4d] MGMTD: /usr/lib/x86_64-linux-gnu/frr/libfrr.so.0(frr_run+0xe8) [0x73ed92da50f8] MGMTD: /usr/lib/frr/mgmtd(main+0x12e) [0x14b02149cb5e] MGMTD: /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x73ed92017b97] MGMTD: /usr/lib/frr/mgmtd(_start+0x2a) [0x14b02149ceda] MGMTD: in thread mgmt_trxn_process_get_cfg scheduled from mgmtd/mgmt_trxn.c:2253 mgmt_trxn_register_event() 2021/10/27 16:01:26 STATIC: [MHW97-3MX3F] mgmt_bcknd_client_read: ERROR: Got error (0) while reading from MGMTD Backend server. Err: 'Resource temporarily unavailable' 2021/10/27 16:01:26 STATIC: [PCNJ6-261A0] Got disconnected from MGMTD Backend Client Server 2021/10/27 16:01:29 STATIC: [YDHD2-AEB3Z] mgmt_bcknd_server_connect: ERROR: Failed to connect to MGMTD Backend Server at /var/run/frr/mgmtd_bcknd.sock. Err: Connection refused 2021/10/27 16:01:29 STATIC: [PCNJ6-261A0] Got disconnected from MGMTD Backend Client Server 2021/10/27 16:01:32 STATIC: [PCNJ6-261A0] Got connected to MGMTD Backend Client Server 2021/10/27 16:01:32 STATIC: [REJRT-8HBY1] Got Trxn DESTROY Notify from MGMTD server 2021/10/27 16:01:32 STATIC: [REJRT-8HBY1] Got Trxn CREATE Notify from MGMTD server root@frr:/home/naveen/ci/mgmt_auto/frr/tests/topotests/yang_mgmt#

[gpnaveen]

PS : X path is not correct. there is missing ] show mgmt get-config xpath /frr-routing:routing/control-plane-protocols/control-plane-protocol[type='frr-staticd:staticd'

[pushpasis]

@gpnaveen This is fixed as far as I remember. Can you please check this on latest build and close if found fixed.

[pushpasis]

Closing it for now. Reopen if still seen.