[proxysql2-2.0.10] crash in MySQL_Threads_Handler::get_non_idle_client_connections (this=this@entry=0x2b146c449700) at MySQL_Thread.cpp:6143

[apircalabu]

Haven't seen this one before, just out of the blue. Currently running proxysql2-2.0.10-1.1.el7.x86_64 from percona-release repo on CentOS 7. Core dump attached.
core.7987.gz
gdb backtrace:

Core was generated by `/usr/bin/proxysql -c /etc/proxysql.cnf'.
Program terminated with signal 11, Segmentation fault.
#0  0x00000000004f2eb4 in MySQL_Threads_Handler::get_non_idle_client_connections (this=this@entry=0x2b146c449700) at MySQL_Thread.cpp:6143
6143	MySQL_Thread.cpp: No such file or directory.
Missing separate debuginfos, use: debuginfo-install proxysql2-2.0.10-1.1.el7.x86_64
(gdb) info threads 
  Id   Target Id         Frame 
  9    Thread 0x2b1475423700 (LWP 8006) 0x00002b146afd985d in nanosleep () from /lib64/libc.so.6
  8    Thread 0x2b1472e00700 (LWP 8000) 0x00002b1469ec0017 in pthread_join () from /lib64/libpthread.so.0
  7    Thread 0x2b1469990300 (LWP 7987) 0x00002b1469ec0017 in pthread_join () from /lib64/libpthread.so.0
  6    Thread 0x2b146dc14700 (LWP 7989) 0x00002b146b007c3d in poll () from /lib64/libc.so.6
  5    Thread 0x2b146d413700 (LWP 7988) 0x00002b1469ec2a35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
  4    Thread 0x2b1475c00700 (LWP 8008) 0x00002b146afd985d in nanosleep () from /lib64/libc.so.6
  3    Thread 0x2b1473601700 (LWP 8290) 0x00002b146b007c3d in poll () from /lib64/libc.so.6
  2    Thread 0x2b1470584700 (LWP 7999) 0x00002b146afd985d in nanosleep () from /lib64/libc.so.6
* 1    Thread 0x2b146f080700 (LWP 7990) 0x00000000004f2eb4 in MySQL_Threads_Handler::get_non_idle_client_connections (this=this@entry=0x2b146c449700) at MySQL_Thread.cpp:6143
(gdb) thread 1
[Switching to thread 1 (Thread 0x2b146f080700 (LWP 7990))]
#0  0x00000000004f2eb4 in MySQL_Threads_Handler::get_non_idle_client_connections (this=this@entry=0x2b146c449700) at MySQL_Thread.cpp:6143
6143	in MySQL_Thread.cpp
(gdb) bt full
#0  0x00000000004f2eb4 in MySQL_Threads_Handler::get_non_idle_client_connections (this=this@entry=0x2b146c449700) at MySQL_Thread.cpp:6143
        thr = 0x2b1470c00000
        q = 0
        i = 0
#1  0x00000000004f3d40 in MySQL_Threads_Handler::SQL3_GlobalStatus (this=0x2b146c449700, _memory=_memory@entry=false) at MySQL_Thread.cpp:5067
        buf = "0\000\067\071\062\060\000\000\304\361{8\000\000\000\000\001\000\000\000\000\000\000\000\340\337\ao\024+\000\000p\337\ao\024+\000\000\222\311\034\303\375\177\000\000\317\367S㥛\304 \000\263f3g\000\000\000\340\337\ao\024+\000\000\375\207\002k\024+\000\000resident\024\342T\000\000\000\000\000ctive), AVG(mapped), AVGp?Fl\024+\000\000a), AVG(retainedH\354\331", '\000' <repeats 13 times>, "\236\037\354i\024+\000\000RE timesl\303\006\000\000\000\000\000\243h\245\032\000\000\000\000\060\060 AND tim"...
        pta = 0x2b147120ce90
        result = 0x2b1471273bc0
#2  0x0000000000553bcd in admin_main_loop (arg=0x2b146c48ee40) at ProxySQL_Admin.cpp:4590
        resultset = <optimized out>
        poll_wait = <optimized out>
        child = 47366835017472
        stacks = 8388608
        next_run = <optimized out>
        fds = 0x2b146c430900
        nfds = <optimized out>
        __PRETTY_FUNCTION__ = "void* admin_main_loop(void*)"
        callback_func = 0x2b146c4bcac0
        shutdown = 0x2b146c444c00
        attr = {__size = "\000\000\000\000\000\000\000\000\001\000\000\000\000\000\000\000\000\020", '\000' <repeats 37 times>, __align = 0}
        __func__ = "admin_main_loop"
        i = <optimized out>
        version = 5
        socket_names = {0x0, 0x2b147120cbc0 "0.0.0.0:6032", 0x0 <repeats 14 times>}
#3  0x00002b1469ebeea5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#4  0x00002b146b0128dd in clone () from /lib64/libc.so.6
No symbol table info available.

Log entries for the crash:

2020-05-05 15:34:40 ProxySQL_GloVars.cpp:9:term_handler(): [WARNING] Received TERM signal: shutdown in progress...
2020-05-05 15:34:40 [INFO] Starting shutdown...
Error: signal 11:
/usr/bin/proxysql(_Z13crash_handleri+0x1a)[0x4ae55a]
/lib64/libc.so.6(+0x36400)[0x2b146af4a400]
/usr/bin/proxysql(_ZN21MySQL_Threads_Handler31get_non_idle_client_connectionsEv+0x34)[0x4f2eb4]
/usr/bin/proxysql(_ZN21MySQL_Threads_Handler17SQL3_GlobalStatusEb+0x2b0)[0x4f3d40]
/usr/bin/proxysql[0x553bcd]
/lib64/libpthread.so.0(+0x7ea5)[0x2b1469ebeea5]
/lib64/libc.so.6(clone+0x6d)[0x2b146b0128dd]
2020-05-05 15:34:40 main.cpp:1538:ProxySQL_daemonize_phase3(): [ERROR] ProxySQL crashed. Restarting!
2020-05-05 15:34:40 [INFO] ProxySQL version 2.0.10-percona-1.1
2020-05-05 15:34:40 [INFO] ProxySQL SHA1 checksum: 225445eaa4e1520032bd93f91b3ac503b00c0c60
2020-05-05 15:34:40 [INFO] Angel process started ProxySQL process 8963
Standard ProxySQL MySQL Logger rev. 2.0.0714 -- MySQL_Logger.cpp -- Fri Feb 28 13:11:05 2020
Standard ProxySQL Cluster rev. 0.4.0906 -- ProxySQL_Cluster.cpp -- Fri Feb 28 13:11:05 2020
Standard ProxySQL Statistics rev. 1.4.1027 -- ProxySQL_Statistics.cpp -- Fri Feb 28 13:11:05 2020
Standard ProxySQL HTTP Server Handler rev. 1.4.1031 -- ProxySQL_HTTP_Server.cpp -- Fri Feb 28 13:11:05 2020
Standard ProxySQL Admin rev. 2.0.6.0805 -- ProxySQL_Admin.cpp -- Fri Feb 28 13:11:05 2020
2020-05-05 15:34:40 [INFO] ProxySQL SHA1 checksum: 225445eaa4e1520032bd93f91b3ac503b00c0c60
Standard MySQL Threads Handler rev. 0.2.0902 -- MySQL_Thread.cpp -- Fri Feb 28 13:11:05 2020
Standard MySQL Authentication rev. 0.2.0902 -- MySQL_Authentication.cpp -- Fri Feb 28 13:11:05 2020
2020-05-05 15:34:40 [INFO] Starting shutdown...
2020-05-05 15:34:40 [INFO] Shutdown completed!
2020-05-05 15:34:40 [INFO] Exiting...
2020-05-05 15:34:40 [INFO] Shutdown angel process
2020-05-05 15:35:00 [INFO] ProxySQL version 2.0.10-percona-1.1