This is a note to let you know that I've just added the patch titled

selftests: firmware: add empty string and async tests

to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: selftests-firmware-add-empty-string-and-async-tests.patch and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 1b1fe542b6f010cf6bc7e1c92805e1c0e133e007 Mon Sep 17 00:00:00 2001

From: Brian Norris computersforpeace@gmail.com Date: Wed, 9 Dec 2015 14:50:29 -0800 Subject: selftests: firmware: add empty string and async tests

From: Brian Norris computersforpeace@gmail.com

commit 1b1fe542b6f010cf6bc7e1c92805e1c0e133e007 upstream.

Now that we've added a 'trigger_async_request' knob to test the request_firmware_nowait() API, let's use it. Also add tests for the empty ("") string, since there have been a couple errors in that handling already.

Since we now have real ways that the sysfs write might fail, let's add the appropriate check on the 'echo' lines too.

Signed-off-by: Brian Norris computersforpeace@gmail.com Acked-by: Kees Cook keescook@chromium.org Signed-off-by: Shuah Khan shuahkh@osg.samsung.com [AmitP: Dropped the async trigger testing parts from original commit] Signed-off-by: Amit Pundir amit.pundir@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- tools/testing/selftests/firmware/fw_filesystem.sh | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)

--- a/tools/testing/selftests/firmware/fw_filesystem.sh +++ b/tools/testing/selftests/firmware/fw_filesystem.sh @@ -48,8 +48,16 @@ echo "ABCD0123" >"$FW"

NAME=$(basename "$FW")

+if printf '\000' >"$DIR"/trigger_request; then + echo "$0: empty filename should not succeed" >&2 + exit 1 +fi + # Request a firmware that doesn't exist, it should fail. -echo -n "nope-$NAME" >"$DIR"/trigger_request +if echo -n "nope-$NAME" >"$DIR"/trigger_request; then + echo "$0: firmware shouldn't have loaded" >&2 + exit 1 +fi if diff -q "$FW" /dev/test_firmware >/dev/null ; then echo "$0: firmware was not expected to match" >&2 exit 1

Patches currently in stable-queue which might be from computersforpeace@gmail.com are

queue-4.4/selftests-firmware-add-empty-string-and-async-tests.patch queue-4.4/test-firmware_class-report-errors-properly-on-failure.patch