What options are applied for the mount?
cat /etc/fstab
you are probably filling up the cache, which is then continuing to sync to the disk. See my previous comment here for why this happens:
Without the exact error and the surrounding context, it is hard to say what that means for you, but a tainted kernel is not inherently a bad thing. You could see it somewhere in here:
sudo dmesg
You can share it with https://bin.garudalinux.org/