cef135a3d2
Bug: http://b/197965342 Remove unnecessary `static_libs` dependencies or move them to `shared_libs` to build with upstream LLD. See b/197965342#comment1 (internal) for rationale. Some info is available externally at https://github.com/llvm/llvm-project/issues/42899. Per go/android-lld-static-lib-fix, OWNERS are added for visibility. No action is needed if the change looks good. This change will be merged after two business days with Global Approvers. Test: Build modules with aosp/2036867 in addition to presubmit Change-Id: I12ffa45755b3055117fa87aae2110b125b60fd54
Fuzzer for android.hardware.bluetooth@1.0-impl-test
Plugin Design Considerations
The fuzzer plugin for android.hardware.bluetooth@1.0-impl-test is designed based on the understanding of the source code and tries to achieve the following:
Maximize code coverage
-
The configuration parameters are not hardcoded, but instead selected based on incoming data. This ensures more code paths are reached by the fuzzer.
-
A new library 'libbt-vendor-fuzz.so' is created that implements functions of
bt_vendor_interface_tand calls them in order to maximize the code coverage
android.hardware.bluetooth@1.0-impl-test supports the following parameters:
- Bluetooth Address (parameter name:
btAddress)
| Parameter | Valid Values | Configured Value |
|---|---|---|
btAddress |
Values inside array ranges from 0x0 to 0xFF |
Value obtained from FuzzedDataProvider |
This also ensures that the plugin is always deterministic for any given input.
Maximize utilization of input data
The plugin feeds the entire input data to the module.
This ensures that the plugin tolerates any kind of input (empty, huge,
malformed, etc) and doesnt exit() on any input and thereby increasing the
chance of identifying vulnerabilities.
Build
This describes steps to build bluetoothV1.0_fuzzer binary.
Android
Steps to build
Build the fuzzer
$ mm -j$(nproc) bluetoothV1.0_fuzzer
Steps to run
To run on device
$ adb sync data
$ adb shell LD_LIBRARY_PATH=/data/fuzz/${TARGET_ARCH}/lib/ /data/fuzz/${TARGET_ARCH}/bluetoothV1.0_fuzzer/bluetoothV1.0_fuzzer