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From: Joe Lawrence <joe.lawrence@redhat.com>
To: live-patching@vger.kernel.org, linux-kselftest@vger.kernel.org
Cc: shuah@kernel.org
Subject: [PATCH] selftests/livepatch: filter 'taints' from dmesg comparison
Date: Wed,  6 Nov 2019 17:28:01 -0500
Message-ID: <20191106222801.7541-1-joe.lawrence@redhat.com> (raw)

The livepatch selftests compare expected dmesg output to verify kernel
behavior.  They currently filter out "tainting kernel with
TAINT_LIVEPATCH" messages which may be logged when loading livepatch
modules.

Further filter the log to also drop "loading out-of-tree module taints
kernel" messages in case the klp_test modules have been build without
the in-tree module flag.

Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
---

Note: I stumbled across this in a testing scenario and thought it might
be generally useful to extend this admittedly fragile mechanism.  Since
there are no related livepatch-core changes, this can go through Shuah's
kselftest tree if she prefers.  -- Joe

 tools/testing/selftests/livepatch/functions.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/livepatch/functions.sh b/tools/testing/selftests/livepatch/functions.sh
index 79b0affd21fb..57975c323542 100644
--- a/tools/testing/selftests/livepatch/functions.sh
+++ b/tools/testing/selftests/livepatch/functions.sh
@@ -221,7 +221,7 @@ function check_result {
 	local expect="$*"
 	local result
 
-	result=$(dmesg | grep -v 'tainting' | grep -e 'livepatch:' -e 'test_klp' | sed 's/^\[[ 0-9.]*\] //')
+	result=$(dmesg | grep -ve '\<taints\>' -ve '\<tainting\>' | grep -e 'livepatch:' -e 'test_klp' | sed 's/^\[[ 0-9.]*\] //')
 
 	if [[ "$expect" == "$result" ]] ; then
 		echo "ok"
-- 
2.21.0


             reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-06 22:28 Joe Lawrence [this message]
2019-11-07  8:42 ` Miroslav Benes
2019-11-07 14:40   ` Joe Lawrence
2019-11-07 14:53     ` Miroslav Benes
2019-11-07 15:13       ` Joe Lawrence
2019-11-07 15:24         ` Miroslav Benes
2019-11-07 15:33           ` Joe Lawrence
2019-11-07 12:22 ` Kamalesh Babulal
2019-11-07 15:29 ` Petr Mladek

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