Commit 4fccc8c0 authored by Kees Cook's avatar Kees Cook Committed by Greg Kroah-Hartman
Browse files

selftests/lkdtm: Reset WARN_ONCE to avoid false negatives 



Since we expect to see warnings every time for many tests, just reset
the WARN_ONCE flags each time the script runs.

Fixes: 46d1a0f0 ("selftests/lkdtm: Add tests for LKDTM targets")
Signed-off-by: default avatarKees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20200625203704.317097-4-keescook@chromium.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent e12145cf

tools/testing/selftests/lkdtm/run.sh

+6 −0
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ 
#

set -e

TRIGGER=/sys/kernel/debug/provoke-crash/DIRECT

CLEAR_ONCE=/sys/kernel/debug/clear_warn_once

KSELFTEST_SKIP_TEST=4



# Verify we have LKDTM available in the kernel.
@@ -67,6 +68,11 @@ cleanup() { 
}

trap cleanup EXIT



# Reset WARN_ONCE counters so we trip it each time this runs.

if [ -w $CLEAR_ONCE ] ; then

	echo 1 > $CLEAR_ONCE

fi



# Save existing dmesg so we can detect new content below

dmesg > "$DMESG"