Instead of full GNU diff (which smaller boot environments may not have), use "comm" which is more available.
Reported-by: Naresh Kamboju <naresh.kamb...@linaro.org> Link: https://lore.kernel.org/lkml/ca+g9fythp+gg+brr_gkbmxu2ooi-_e9pattpb6tvrswv1g1...@mail.gmail.com Fixes: f131d9edc29d ("selftests/lkdtm: Don't clear dmesg when running tests") Signed-off-by: Kees Cook <keesc...@chromium.org> --- tools/testing/selftests/lkdtm/run.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/lkdtm/run.sh b/tools/testing/selftests/lkdtm/run.sh index 8383eb89d88a..5fe23009ae13 100755 --- a/tools/testing/selftests/lkdtm/run.sh +++ b/tools/testing/selftests/lkdtm/run.sh @@ -82,7 +82,7 @@ dmesg > "$DMESG" ($SHELL -c 'cat <(echo '"$test"') >'"$TRIGGER" 2>/dev/null) || true # Record and dump the results -dmesg | diff --changed-group-format='%>' --unchanged-group-format='' "$DMESG" - > "$LOG" || true +dmesg | comm -13 "$DMESG" - > "$LOG" || true cat "$LOG" # Check for expected output -- 2.25.1 -- Kees Cook
