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| author | Luis R. Rodriguez <mcgrof@kernel.org> | 2017-07-20 13:13:38 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-10 13:58:40 -0700 |
| commit | 0d1f417eee8ad0687afb90eab282614eecce1a13 (patch) | |
| tree | 0cbec3d176614bbc5bf8d9c5267ea6543fe2d7d1 /tools | |
| parent | 1f5000bd8afab0ceed58c67f673250b864e5a9c9 (diff) | |
| download | linux-0d1f417eee8ad0687afb90eab282614eecce1a13.tar.gz linux-0d1f417eee8ad0687afb90eab282614eecce1a13.tar.xz | |
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 <mfuzzey@parkeon.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools')
| -rwxr-xr-x | tools/testing/selftests/firmware/fw_fallback.sh | 31 |
1 files changed, 31 insertions, 0 deletions
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 |