linux-kernel - ftrace/test_ownership kselftest fails in the second run

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Date: Tue, 21 May 2024 02:34:50 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: Steven Rostedt <rostedt@...dmis.org>, 
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: ftrace/test_ownership kselftest fails in the second run

Hi Steven,



If I execute test.d/00basic/test_ownership.tc in a row,
it passes in the first run, and fails in the second run.


I observe this on the Ubuntu 24.04 (6.8 kernel),
and also on the latest linux-next (next-20240520).


Is this a limitation of the test or a kernel bug?



vagrant@...ian:~/linux/tools/testing/selftests/ftrace$ sudo
/ftracetest test.d/00basic/test_ownership.tc
unlink: cannot unlink
'/home/vagrant/linux/tools/testing/selftests/ftrace/logs/latest': No
such file or directory
=== Ftrace unit tests ===
[1] Test file and directory ownership changes for eventfs [PASS]


# of passed:  1
# of failed:  0
# of unresolved:  0
# of untested:  0
# of unsupported:  0
# of xfailed:  0
# of undefined(test bug):  0
vagrant@...ian:~/linux/tools/testing/selftests/ftrace$ sudo
/ftracetest test.d/00basic/test_ownership.tc
=== Ftrace unit tests ===
[1] Test file and directory ownership changes for eventfs [FAIL]


# of passed:  0
# of failed:  1
# of unresolved:  0
# of untested:  0
# of unsupported:  0
# of xfailed:  0
# of undefined(test bug):  0
vagrant@...ian:~/linux/tools/testing/selftests/ftrace$ uname -r
6.9.0-next-20240520





-- 
Best Regards
Masahiro Yamada