Add a new video device test that opens user specified Video Device and
calls video ioctls in a loop once every 10 seconds.

This test is intended for testing device removal and driver unbind while
an ioctl is active. Clean device removal and driver unbind is expected
without any use-after-free and panics.
Signed-off-by: NShuah Khan <shuahkh@osg.samsung.com>

Add media_device_open to .gitignore
Signed-off-by: NShuah Khan <shuahkh@osg.samsung.com>

Add regression test scripts open_loop_test.sh, and bind_unbind_sample.sh.
Also add regression_test.txt that describes the regression test procedure.
Signed-off-by: NShuah Khan <shuahkh@osg.samsung.com>

Add a new media test to open, run ioctl, and close the media device file.
Signed-off-by: NShuah Khan <shuahkh@osg.samsung.com>

Change it to randomize the loop count instead of hardcoded number of times
ioctl is called.
Signed-off-by: NShuah Khan <shuahkh@osg.samsung.com>

Fix the incorrect usage information.
Signed-off-by: NShuah Khan <shuahkh@osg.samsung.com>

Fix to print information returned by ioctl only when
it returns success.
Signed-off-by: NShuah Khan <shuahkh@osg.samsung.com>

This test opens user specified Media Device and calls
MEDIA_IOC_DEVICE_INFO ioctl in a loop once every 10
seconds. This test is for detecting errors in device
removal path.

Usage:
    sudo ./media_device_test -d /dev/mediaX

While test is running, remove the device and
ensure there are no use after free errors and
other Oops in the dmesg. Enable KaSan kernel
config option for use-after-free error detection.
Signed-off-by: NShuah Khan <shuahkh@osg.samsung.com>