Hi I see a strange interaction between zfs on root and kern.proc.pathname on my laptop. Whenever I try to use gcore it fails with: gcore 1023 gcore: kern.proc.pathname failure However, gcore /usr/local/bin/zsh 1023 is working properly. I made some tests booting from usb stick (fresh installworld, no src.conf, no make.conf, GENERIC kernel) What works: having / on ufs and importing a zfs pool later on. What doesn't: having / on zfs, whatever the settings for checksum, compression, or normalization. Both 11-stable and 12-current behave this way. Current from may-june worked properly. adb, chromium and virtualbox as well stopped working at approximately the same time, however I don't know if it is linked ("truss -f adb start-server" shows that garbage is passed to execl after forking). Any idea what's going on? Does anybody else see this? Thanks!