linux-kernel - [PATCH v2] tools: Add new "test" taint to kernel-chktaint

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Message-Id: <20220824041933.822838-1-joefradley@google.com>
Date:   Tue, 23 Aug 2022 21:19:33 -0700
From:   Joe Fradley <joefradley@...gle.com>
To:     davidgow@...gle.com, brendanhiggins@...gle.com,
        skhan@...uxfoundation.org
Cc:     linux-kselftest@...r.kernel.org, kunit-dev@...glegroups.com,
        corbet@....net, Joe Fradley <joefradley@...gle.com>,
        kernel-team@...roid.com, linux-kernel@...r.kernel.org
Subject: [PATCH v2] tools: Add new "test" taint to kernel-chktaint

Commit c272612cb4a2 ("kunit: Taint the kernel when KUnit tests are run")
added a new taint flag for when in-kernel tests run. This commit adds
recognition of this new flag in kernel-chktaint.

Reviewed-by: David Gow <davidgow@...gle.com>
Signed-off-by: Joe Fradley <joefradley@...gle.com>
---
Changes in v2:
- based off of kselftest/kunit branch
- Added David's Reviewed-by tag

 tools/debugging/kernel-chktaint | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tools/debugging/kernel-chktaint b/tools/debugging/kernel-chktaint
index f1af27ce9f20..279be06332be 100755
--- a/tools/debugging/kernel-chktaint
+++ b/tools/debugging/kernel-chktaint
@@ -187,6 +187,7 @@ else
 	echo " * auxiliary taint, defined for and used by distros (#16)"
 
 fi
+
 T=`expr $T / 2`
 if [ `expr $T % 2` -eq 0 ]; then
 	addout " "
@@ -195,6 +196,14 @@ else
 	echo " * kernel was built with the struct randomization plugin (#17)"
 fi
 
+T=`expr $T / 2`
+if [ `expr $T % 2` -eq 0 ]; then
+	addout " "
+else
+	addout "N"
+	echo " * an in-kernel test (such as a KUnit test) has been run (#18)"
+fi
+
 echo "For a more detailed explanation of the various taint flags see"
 echo " Documentation/admin-guide/tainted-kernels.rst in the Linux kernel sources"
 echo " or https://kernel.org/doc/html/latest/admin-guide/tainted-kernels.html"
-- 
2.37.1.595.g718a3a8f04-goog