Description of problem:
Please backport the patch with the following commit in attr.

~~~
commit 1c14b97fba52560ee4812b73288b3d6ca672f9a5
Author: Achilles Gaikwad <agaikwad@redhat.com>
Date: Thu Feb 6 10:09:38 2020 +0530

man: add examples to setfattr.1

The current man page for setfattr does not state that the user needs to
add the prefix "user." With the help of examples we demonstrate that the
user needs to add a namespace as prefix.

Signed-off-by: Achilles Gaikwad <agaikwad@redhat.com>
~~~
Version-Release number of selected component (if applicable):

NA

How reproducible:

NA

Steps to Reproduce:

NA

Actual results:

no examples section

Expected results:

example section in man page.

~~~
EXAMPLES
Add extended attribute to user namespace:

$ setfattr -n user.foo -v bar file.txt

To add md5sum of the file as an extended attribute:

1. setfattr -n trusted.md5sum -v d41d8cd98f00b204e00998ecf8427e file.txt
   ~~~

Additional info:

https://lists.nongnu.org/archive/html/acl-devel/2020-02/msg00000.html