From 0d1f417eee8ad0687afb90eab282614eecce1a13 Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Thu, 20 Jul 2017 13:13:38 -0700 Subject: test_firmware: add test case for SIGCHLD on sync fallback It has been reported that SIGCHLD will trigger an immediate abort on sync firmware requests which rely on the sysfs interface for a trigger. This is unexpected behaviour, this reproduces this issue. This test case currenty fails. Reported-by: Martin Fuzzey Signed-off-by: Luis R. Rodriguez Signed-off-by: Greg Kroah-Hartman --- tools/testing/selftests/firmware/fw_fallback.sh | 31 +++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'tools/testing/selftests/firmware') diff --git a/tools/testing/selftests/firmware/fw_fallback.sh b/tools/testing/selftests/firmware/fw_fallback.sh index 2e4c22d5abf7..8f511035f783 100755 --- a/tools/testing/selftests/firmware/fw_fallback.sh +++ b/tools/testing/selftests/firmware/fw_fallback.sh @@ -134,6 +134,27 @@ load_fw_custom_cancel() wait } +load_fw_fallback_with_child() +{ + local name="$1" + local file="$2" + + # This is the value already set but we want to be explicit + echo 4 >/sys/class/firmware/timeout + + sleep 1 & + SECONDS_BEFORE=$(date +%s) + echo -n "$name" >"$DIR"/trigger_request 2>/dev/null + SECONDS_AFTER=$(date +%s) + SECONDS_DELTA=$(($SECONDS_AFTER - $SECONDS_BEFORE)) + if [ "$SECONDS_DELTA" -lt 4 ]; then + RET=1 + else + RET=0 + fi + wait + return $RET +} trap "test_finish" EXIT @@ -221,4 +242,14 @@ else echo "$0: cancelling custom fallback mechanism works" fi +set +e +load_fw_fallback_with_child "nope-signal-$NAME" "$FW" +if [ "$?" -eq 0 ]; then + echo "$0: SIGCHLD on sync ignored as expected" >&2 +else + echo "$0: error - sync firmware request cancelled due to SIGCHLD" >&2 + exit 1 +fi +set -e + exit 0 -- cgit v1.2.3