Karabo 2.19.0: correction devices mysteriously segfault

In my testing environment, I find that correction devices, upon coming up, process a few trains normally (even sending output to the assemblers), but then:

2023-12-04T15:58:42.676 INFO  karabo.xms.OutputChannel  : memtopipe_00_Q1M1:output : Copy input channel 'CALDEV_HAMMERD/AGIPD/CORRECT00_Q1M1:dataInput' (ip/port 131.169.182.220:56994) disconnected since 'End of file' (#2).

with no further warning from the correction device. All the hallmarks of segfaulting are there: the manager and the GUI think they're still up (no slotInstanceGone emitted), but they're clearly not. I've not yet figured out where in the input handler - if in the input handler at all - something exciting goes wrong.