Hang in RoutingWorker::execute_concurrently semaphore.hh:146

2021-11-19 16:32:23   alert  : (sigfatal_handler): MaxScale 6.1.4 received fatal signal 6. Commit ID: d358b90fc6c45c1875b5e32133b19b80bddf117d System name: Linux Release string: NAME="CentOS Linux"

2021-11-19 16:32:23   alert  : (sigfatal_handler): Statement currently being classified: none/unknown

alert  :   /lib64/libpthread.so.0(+0xdb3b): sem_wait.c:?

  /lib64/libpthread.so.0(+0xdbcf): sem_wait.c:?

  /lib64/libpthread.so.0(sem_wait+0x2b): ??:0

  /usr/lib64/maxscale/libmaxscale-common.so.1.0.0(_ZN8maxscale13RoutingWorker20execute_concurrentlyERKSt8functionIFvvEE+0x52): maxutils/maxbase/include/maxbase/semaphore.hh:146

  /usr/lib64/maxscale/libmaxscale-common.so.1.0.0(+0x19d5da): /opt/rh/devtoolset-7/root/usr/include/c++/7/bits/std_function.h:275

  /usr/lib64/maxscale/libmaxscale-common.so.1.0.0(_ZN7maxbase6Worker14handle_messageERNS_12MessageQueueERKNS_19MessageQueueMessageE+0x119): maxutils/maxbase/src/worker.cc:478

  /usr/lib64/maxscale/libmaxscale-common.so.1.0.0(_ZN7maxbase12MessageQueue18handle_poll_eventsEPNS_6WorkerEj+0x98): maxutils/maxbase/src/messagequeue.cc:307

  /usr/lib64/maxscale/libmaxscale-common.so.1.0.0(_ZN7maxbase6Worker15poll_waiteventsEv+0x1e3): maxutils/maxbase/src/worker.cc:865

  /usr/lib64/maxscale/libmaxscale-common.so.1.0.0(_ZN7maxbase6Worker3runEPNS_9SemaphoreE+0x4f): maxutils/maxbase/src/worker.cc:562

  /usr/bin/maxscale(main+0x1fd6): server/core/gateway.cc:2213

  /lib64/libc.so.6(__libc_start_main+0xf5): ??:?

  /usr/bin/maxscale(): ??:?