All I know is I have been testing for 2 hours now and all is good so far if I do not open chromium and try to navigate sites.
ADDED:
Everything just locked up on me again and no chromium.
After another kernel dump I was able to get the logs before it froze. It is pretty much the same thing saying issue with page swapping. I believe I just assumed it was a 16k issue with chromium but I did not have it loaded this time; just firefox and after 20 minutes this time.
ADDITIONAL:
@Sam_Fisher It is looking like the culprit is the zswap-arm.service. I have disabled it here and run chromium flatpak and firefox while at the same time compiled a kernel with distcc and -j19 with vim3pro and rockpro64 as slaves. I am unable to make it freeze so far.
I have 8G ram but some here may have smaller ram and may have to create a swap space on disk if they run out of ram.
I uploaded v6.15.rc2-2 (today’s latest) to unstable when the mirrors sync. Install the kernel then disable zswap-arm.service before rebooting and see what it does.
sudo systemctl disable zswap-arm