On 02/08/2022 15:29, Shuah Khan wrote:
On 8/2/22 3:51 AM, Mickaël Salaün wrote:
Hi,
This change breaks the Landlock test build when performed on the tools/testing/selftests/landlock directory because the (non-system/up-to-date) kernel headers aren't found. Looking at the use of top_srcdir and HDR_PATH, it seems that multiple subsystems are using this feature. I consider this change a regression.
I did a build test from the top level before sending the pull request
and didn't catch this breakage as a result. This breaks when build is
run from the test directory.
We have had several problems related to khdr_dir and target and decided
to move away from it with this change.
It also removes the check on up-to-date kernel headers (thanks to the Makefile's target timestamp).
I wasn't CCed for this change impacting Landlock [1]. Please keep in mind to add at least maintainers and related mailing-lists for changes on related subsystems.
That is the usual practice and if I notice missing maintainers, I add
them. We missed this one.
The following patch almost revert commit a917dd94b832 ("selftests/landlock: drop deprecated headers dependency") and partially fixes commit 49de12ba06ef ("selftests: drop KSFT_KHDR_INSTALL make target"):
Guillaume,
Will you be able to look at this and send a patch on top? I will
send another pull request before merge window closes?
Sure, I'll take a look today.
Also I'll see if we can add some extra build tests in KernelCI
for the kselftest tree to catch issues like these automatically.