When Inference Handler Debugging is enabled by issuing the following command:
kill -USR1 <SS pid>
it causes the SpectroSERVER to crash with the following error message in VNM.OUT:
/apps/CA/Spectrum/SS/SpectroSERVER: symbol lookup error: /opt/SPECTRUM/lib/../SS/libsskrnl.so.1: undefined symbol: _ZN6Thread27turn_on_thread_state_timingEv
Release : 21.2
This was only seen on 21.2.2 and no longer happened after upgrading to 21.2.8.