Can you check fwupd.service for any errors that coincide with the higher
memory usage?
Also; any bad USB devices or kernel errors? There are some bug reports
that talked about descriptors getting left open when there was a bad USB
device.
We might need to try to use valgrind to find this problem. You can try
to run valgrind like this:
|sudo valgrind --leak-check=full --show-leak-kinds=definite
/usr/libexec/fwupd/fwupd | tee fwupd.log
|
You can leave that running a few hours and then ctrl-c and share
fwupd.log and we'll see if anything stands out.
