Add initial batch of inputFlinger fuzzers
This batch of fuzzers is focused on the input Mappers. These fuzzers are
not host_supported, and must be run on-device. Followup CLs containing
additional inputflinger fuzzers will rely on the FuzzContainer.h and
MapperHelpers.h header files.
Fuzzers included:
- CursorInputFuzzer
- KeyboardInputFuzzer
- MultiTouchInputFuzzer
- SwitchInputFuzzer
Test: Tested on a pixel 3a with HWASAN. Accurate % coverage information is
not available due to the large number of shared libraries included
in runs built with hwasan interfering with PC Count information
(increasing the total PC count to ~682,000).
Summary of updates:
Coverage improvements: 75% to 82%
Design changes:
[1] Refactored
- CursorInputFuzzer
- KeyboardInputFuzzer
- MultiTouchInputFuzzer
- SwitchInputFuzzer
in order to generate event as a combination of valid and invalid input.
[2] Used FuzzedDataProvider to generate values for events.
Signed-off-by: Michael Ensing <michael.ensing@leviathansecurity.com>
Change-Id: Id39205c691f54c516f8a452293cb098382019335
8 files changed