android13/frameworks/native/services/surfaceflinger/fuzzer

Fuzzers for SurfaceFlinger

Table of contents

• SurfaceFlinger
• DisplayHardware
• Scheduler
• Layer

Fuzzer for SurfaceFlinger

SurfaceFlinger supports the following data sources:

1. Pixel Formats (parameter name: defaultCompositionPixelFormat)
2. Data Spaces (parameter name: defaultCompositionDataspace)
3. Rotations (parameter name: internalDisplayOrientation)
4. Surface composer tags (parameter name: onTransact)

You can find the possible values in the fuzzer's source code.

Steps to run

1. Build the fuzzer

  $ mm -j$(nproc) surfaceflinger_fuzzer

2. To run on device

  $ adb sync data
  $ adb shell /data/fuzz/arm64/surfaceflinger_fuzzer/surfaceflinger_fuzzer

Fuzzer for DisplayHardware

DisplayHardware supports the following parameters:

1. Hal Capability (parameter name: hasCapability)
2. Hal BlendMode (parameter name: setBlendMode)
3. Hal Composition (parameter name: setCompositionType)
4. Hal Display Capability (parameter name: hasDisplayCapability)
5. Composition Types (parameter name: prepareFrame)
6. Color Modes (parameter name: setActiveColorMode)
7. Render Intents (parameter name: setActiveColorMode)
8. Power Modes (parameter name: setPowerMode)
9. Content Types (parameter name: setContentType)
10. Data Space (parameter name: setDataspace)
11. Transforms (parameter name: setLayerTransform)

You can find the possible values in the fuzzer's source code.

Steps to run

1. Build the fuzzer

  $ mm -j$(nproc) surfaceflinger_displayhardware_fuzzer

2. Run on device

  $ adb sync data
  $ adb shell /data/fuzz/arm64/surfaceflinger_displayhardware_fuzzer/surfaceflinger_displayhardware_fuzzer

Fuzzer for Scheduler

Scheduler supports the following parameters:

1. VSync Periods (parameter name: lowFpsPeriod)

You can find the possible values in the fuzzer's source code.

Steps to run

1. Build the fuzzer

  $ mm -j$(nproc) surfaceflinger_scheduler_fuzzer

2. To run on device

  $ adb sync data
  $ adb shell /data/fuzz/arm64/surfaceflinger_scheduler_fuzzer/surfaceflinger_scheduler_fuzzer

Fuzzer for Layer

Layer supports the following parameters:

1. Display Connection Types (parameter name: fakeDisplay)
2. State Sets (parameter name: traverseInZOrder)
3. State Subsets (parameter name: prepareCompositionState)
4. Disconnect modes (parameter name: disconnect)
5. Data Spaces (parameter name: setDataspace)

You can find the possible values in the fuzzer's source code.

Steps to run

1. Build the fuzzer

  $ mm -j$(nproc) surfaceflinger_layer_fuzzer

2. Run on device

  $ adb sync data
  $ adb shell /data/fuzz/arm64/surfaceflinger_layer_fuzzer/surfaceflinger_layer_fuzzer