Comment # 4 on bug 998850 from Peter S�tterlin

I assume you want to see the output of /sys/kernel/debug/tracing/trace?
(sorry, I'm nor a kernel guy...)
I've attached that, xz-compressed. also outpput from ps aux, in case you need
PIDs

Yesterday I rebooted the machine. After reboot, slabtop did not show
substantial activity and/or growing slab volume. I left it running overnight,
this morning the growth had started again.
Before the reboot I had put the machine first in multi-user.target, then
rescue.target. Watching slabtop the increase in slab usage seemed to continue
(I was sort of suspecting kwin/plasma to be the cause).

FYI, filesystems in use are btrfs (root) and xfs (home)

HTH