Internal logic error, multiple crashs, different error messages

alert  : MaxScale 6.3.0 received fatal signal 11. Commit ID: cdf2dd2884c6fdcaf2b42adebe28466836aa8d83 System name: Linux Release s

tring: Ubuntu 20.04.4 LTS

alert  : (readwritesplit); MaxScale 6.3.0 received fatal signal 11. Commit ID: cdf2dd2884c6fdcaf2b42adebe284

66836aa8d83 System name: Linux Release string: Ubuntu 20.04.4 LTS

alert  : (readwritesplit); Statement currently being classified: none/unknown

notice : (readwritesplit); For a more detailed stacktrace, install GDB and add 'debug=gdb-stacktrace' under

the [maxscale] section.

nm: /lib/x86_64-linux-gnu/libc.so.6: no symbols

nm: /lib/x86_64-linux-gnu/libc.so.6: no symbols

  /lib/x86_64-linux-gnu/libc.so.6(cfree+0x20): ??:0

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0(_ZN8maxscale7Backend9ack_writeEv+0x5c): /usr/include/c++/9/bits/d

eque.tcc:577

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0(_ZN8maxscale7Backend5closeENS0_10close_typeE+0x48): server/core/b

ackend.cc:51

  /usr/lib/x86_64-linux-gnu/maxscale/libreadwritesplit.so(_ZN14RWSplitSessionD1Ev+0x89): server/modules/routing/readwritesplit/rws

plitsession.cc:82

  /usr/lib/x86_64-linux-gnu/maxscale/libreadwritesplit.so(_ZN14RWSplitSessionD0Ev+0x16): server/modules/routing/readwritesplit/rws

plitsession.cc:91

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0(_ZN15ServiceEndpoint5closeEv+0x8f): /usr/include/c++/9/bits/stl_i

terator.h:804

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0(_ZN9ClientDCB8shutdownEv+0x25): /usr/include/c++/9/bits/unique_pt

r.h:154

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0(_ZN3DCB7destroyEv+0x5d): server/core/dcb.cc:839

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0(_ZN8maxscale13RoutingWorker14delete_zombiesEv+0x61): /usr/include

/c++/9/bits/stl_vector.h:1005

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0(_ZN8maxscale13RoutingWorker10epoll_tickEv+0x21): /usr/include/c++

/9/bits/stl_iterator.h:804

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0(_ZN7maxbase6Worker15poll_waiteventsEv+0x2f0): maxutils/maxbase/sr

c/worker.cc:781

  /usr/lib/x86_64-linux-gnu/maxscale/libmaxscale-common.so.1.0.0(_ZN7maxbase6Worker3runEPNS_9SemaphoreE+0x53): maxutils/maxbase/sr

c/worker.cc:558

  /lib/x86_64-linux-gnu/libstdc++.so.6(+0xd6de4): ??:?

  /lib/x86_64-linux-gnu/libpthread.so.0(+0x8609): ??:?

  /lib/x86_64-linux-gnu/libc.so.6(clone+0x43): ??:0

alert  : Writing core dump.

[maxscale]

threads = auto

admin_gui = false

query_retries = 12

skip_name_resolve = true

[srv1]

type = server

address = 10.1.0.5

port = 3306

extra_port = 3307

protocol = MariaDBBackend

priority = 1

persistpoolmax = 128

persistmaxtime = 3600s

[srv2]

type = server

address = 10.1.0.6

port = 3306

extra_port = 3307

protocol = MariaDBBackend

priority = 2

persistpoolmax = 128

persistmaxtime = 3600s

[srv3]

type = server

address = 10.1.0.7

port = 3306

extra_port = 3307

protocol = MariaDBBackend

priority = 3

persistpoolmax = 128

persistmaxtime = 3600s

[monitor]

type = monitor

module = galeramon

servers = srv1,srv2,srv3

user = maxscale

password = 2B11DE20D111FCC055C

monitor_interval = 2000ms

use_priority = true

[readwritesplit]

type = service

router = readwritesplit

servers = srv1,srv2,srv3

user = maxscale

password = 2B11DE2A3E9F865D230564EA12FFA2A18B8E90D422C4A59C92E5FA08284D4862F8F2DA33C684D411B01C0D111FCC055C

delayed_retry = true

delayed_retry_timeout = 15s

retry_failed_reads = true

transaction_replay = true

transaction_replay_max_size = 10Mi

transaction_replay_attempts = 10

transaction_replay_retry_on_deadlock = true

[listener]

type = listener

service = readwritesplit

protocol = MariaDBClient

address = 127.0.0.1

port = 3306