Nice! Looks like this is a difference between the Ubuntu PC kernel's configuration and the Ubuntu Pi kernel's configuration. On a PC:
CONFIG_LSM="landlock,lockdown,yama,integrity,apparmor" On a Pi: CONFIG_LSM="yama,integrity,apparmor" Adding "lsm=landlock,lockdown,yama,integrity,apparmor" to /boot/firmware/cmdline.txt did enable landlock successfully on a subsequent boot, and the messages mentioned in the description above do disappear. However, now touching a file in the home-directory leads to the following in the journal: Sep 10 10:36:00 kermit tracker-miner-fs-3[5442]: (tracker-extract-3:5442): GLib-GIO-WARNING **: 10:36:00.310: Error creating IO channel for /proc/self/mountinfo: Invalid argument (g-io-error-quark, 13) Sep 10 10:36:00 kermit tracker-miner-fs-3[5442]: (tracker-extract-3:5442): GLib-WARNING **: 10:36:00.361: getpwuid_r(): failed due to unknown user id (1000) Sep 10 10:36:43 kermit tracker-miner-fs-3[5494]: (tracker-extract-3:5494): GLib-GIO-WARNING **: 10:36:43.582: Error creating IO channel for /proc/self/mountinfo: Invalid argument (g-io-error-quark, 13) Sep 10 10:36:43 kermit tracker-miner-fs-3[5494]: (tracker-extract-3:5494): GLib-WARNING **: 10:36:43.631: getpwuid_r(): failed due to unknown user id (1000) However, I note this is on my rather customized desktop development Pi, and needs replicating on the bare Pi desktop image. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2066885 Title: On Pi desktop, numerous reports of lack of landlock supported ABI To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/2066885/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
