"setfattr -h" fails silently

[LHLaurini]

When building Linux from Scratch, the test suite for attr fails. When I switch back to the vanilla kernel, it passes.

I'm able to reproduce the issue manually:

Zen kernel:

$ touch f
$ ln -s f l
$ setfattr -n user.filename -v f l
$ getfattr -d f l
# file: f
user.filename="f"

# file: l
user.filename="f"

$ setfattr -h -n user.filename -v f l
$ echo $?
0
$ 

setfattr -h should fail with setfattr: l: Operation not permitted, but it doesn't.

Vanilla:

$ touch f
$ ln -s f l
$ setfattr -n user.filename -v f l
$ getfattr -d f l
# file: f
user.filename="f"

# file: l
user.filename="f"

$ setfattr -h -n user.filename -v f l
setfattr: l: Operation not permitted
$ 

Also, it works as expected with both kernels only when run as root.

I'm running Arch:

$ pacman -Q linux{,-zen}
linux 5.9.9.arch1-1
linux-zen 5.9.9.zen1-1

[heftig]

The cause is f50081c, part of the clearlinux patchset. @damentz

[damentz]

Reverted the patch. It's probably a feature used on clearlinux itself, but no one asked for it before merging clear linux patches to Zen Kernel, so it's safe to remove.