Hi all, I'm trying to mount a configfs directory and set it the smackfsdef value on a "Linux m3ulcb 4.14.75-ltsi-yocto-standard" As root, I tried: mount -t configfs -o smackfsdef=X none /config It always always fail: # chsmack -r /config /config access="_" /config/snd-avirt access="_" /config/snd-avirt/routes access="_" /config/snd-avirt/streams access="_" /config/snd-avirt/streams/configured access="_" Note that the commit c3300aaf95fb4 of Al Viro (Sun Dec 16 01:52:24 2018) changed smackfsdef to smackfsdefault!!!! So I also tried: mount -t configfs -o smackfsdefault=X none /config And had no error nad no result. But I got an error when trying to use that option for mounting tmpfs. It probably means that security options are not scanned when mounting configfs on 4.14. Any clue? Best regards José Bollo P.S. (If it helps) m3ulcb:~# stat /config/snd-avirt/streams/configured -f File: "/config/snd-avirt/streams/configured" ID: 0 Namelen: 255 Type: configfs Block size: 4096 Fundamental block size: 4096 Blocks: Total: 0 Free: 0 Available: 0 Inodes: Total: 0 Free: 0 m3ulcb:~# stat /config/snd-avirt/streams/configured File: /config/snd-avirt/streams/configured Size: 4096 Blocks: 0 IO Block: 4096 regular file Device: 22h/34d Inode: 195316 Links: 1 Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root) Access: 2019-05-17 13:35:06.830474837 +0000 Modify: 2019-05-17 13:35:06.830474837 +0000 Change: 2019-05-17 13:35:06.830474837 +0000 Birth: -