tree: b4e62c37adc8f277cee0a2e534a8c9d5c0baa85f [path history] [tgz]
  1. Android.bp
  2. oboeservice_fuzzer.cpp
  3. README.md
services/oboeservice/fuzzer/README.md

Fuzzer for libaaudioservice

Plugin Design Considerations

The fuzzer plugin for libaaudioservice is designed based on the understanding of the service 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.

AAudio Service request contains the following parameters:

  1. AAudioFormat
  2. UserId
  3. ProcessId
  4. InService
  5. DeviceId
  6. SampleRate
  7. ChannelMask
  8. Direction
  9. SharingMode
  10. Usage
  11. ContentType
  12. InputPreset
  13. BufferCapacity
ParameterValid Input ValuesConfigured Value
AAudioFormatAAUDIO_FORMAT_UNSPECIFIED, AAUDIO_FORMAT_PCM_I16, AAUDIO_FORMAT_PCM_FLOATValue chosen from valid values by obtaining index from FuzzedDataProvider
UserIdINT32_MIN to INT32_MAXValue obtained from getuid()
ProcessIdINT32_MIN to INT32_MAXValue obtained from getpid()
InServiceboolValue obtained from FuzzedDataProvider
DeviceIdINT32_MIN to INT32_MAXValue obtained from FuzzedDataProvider
SampleRateINT32_MIN to INT32_MAXValue obtained from FuzzedDataProvider
ChannelMaskAAUDIO_UNSPECIFIED, AAUDIO_CHANNEL_INDEX_MASK_1, AAUDIO_CHANNEL_INDEX_MASK_2, AAUDIO_CHANNEL_INDEX_MASK_3, AAUDIO_CHANNEL_INDEX_MASK_4, AAUDIO_CHANNEL_INDEX_MASK_5, AAUDIO_CHANNEL_INDEX_MASK_6, AAUDIO_CHANNEL_INDEX_MASK_7, AAUDIO_CHANNEL_INDEX_MASK_8, AAUDIO_CHANNEL_INDEX_MASK_9, AAUDIO_CHANNEL_INDEX_MASK_10, AAUDIO_CHANNEL_INDEX_MASK_11, AAUDIO_CHANNEL_INDEX_MASK_12, AAUDIO_CHANNEL_INDEX_MASK_13, AAUDIO_CHANNEL_INDEX_MASK_14, AAUDIO_CHANNEL_INDEX_MASK_15, AAUDIO_CHANNEL_INDEX_MASK_16, AAUDIO_CHANNEL_INDEX_MASK_17, AAUDIO_CHANNEL_INDEX_MASK_18, AAUDIO_CHANNEL_INDEX_MASK_19, AAUDIO_CHANNEL_INDEX_MASK_20, AAUDIO_CHANNEL_INDEX_MASK_21, AAUDIO_CHANNEL_INDEX_MASK_22, AAUDIO_CHANNEL_INDEX_MASK_23, AAUDIO_CHANNEL_INDEX_MASK_24, AAUDIO_CHANNEL_MONO, AAUDIO_CHANNEL_STEREO, AAUDIO_CHANNEL_FRONT_BACK, AAUDIO_CHANNEL_2POINT0POINT2, AAUDIO_CHANNEL_2POINT1POINT2, AAUDIO_CHANNEL_3POINT0POINT2, AAUDIO_CHANNEL_3POINT1POINT2, AAUDIO_CHANNEL_5POINT1, AAUDIO_CHANNEL_MONO, AAUDIO_CHANNEL_STEREO, AAUDIO_CHANNEL_2POINT1, AAUDIO_CHANNEL_TRI, AAUDIO_CHANNEL_TRI_BACK, AAUDIO_CHANNEL_3POINT1, AAUDIO_CHANNEL_2POINT0POINT2, AAUDIO_CHANNEL_2POINT1POINT2, AAUDIO_CHANNEL_3POINT0POINT2, AAUDIO_CHANNEL_3POINT1POINT2, AAUDIO_CHANNEL_QUAD, AAUDIO_CHANNEL_QUAD_SIDE, AAUDIO_CHANNEL_SURROUND, AAUDIO_CHANNEL_PENTA, AAUDIO_CHANNEL_5POINT1, AAUDIO_CHANNEL_5POINT1_SIDE, AAUDIO_CHANNEL_5POINT1POINT2, AAUDIO_CHANNEL_5POINT1POINT4, AAUDIO_CHANNEL_6POINT1, AAUDIO_CHANNEL_7POINT1, AAUDIO_CHANNEL_7POINT1POINT2, AAUDIO_CHANNEL_7POINT1POINT4, AAUDIO_CHANNEL_9POINT1POINT4, AAUDIO_CHANNEL_9POINT1POINT6Value obtained from FuzzedDataProvider
DirectionAAUDIO_DIRECTION_OUTPUT, AAUDIO_DIRECTION_INPUTValue chosen from valid values by obtaining index from FuzzedDataProvider
SharingModeAAUDIO_SHARING_MODE_EXCLUSIVE, AAUDIO_SHARING_MODE_SHAREDValue chosen from valid values by obtaining index from FuzzedDataProvider
UsageAAUDIO_USAGE_MEDIA, AAUDIO_USAGE_VOICE_COMMUNICATION, AAUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING, AAUDIO_USAGE_ALARM, AAUDIO_USAGE_NOTIFICATION, AAUDIO_USAGE_NOTIFICATION_RINGTONE, AAUDIO_USAGE_NOTIFICATION_EVENT, AAUDIO_USAGE_ASSISTANCE_ACCESSIBILITY, AAUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE, AAUDIO_USAGE_ASSISTANCE_SONIFICATION, AAUDIO_USAGE_GAME, AAUDIO_USAGE_ASSISTANT, AAUDIO_SYSTEM_USAGE_EMERGENCY, AAUDIO_SYSTEM_USAGE_SAFETY, AAUDIO_SYSTEM_USAGE_VEHICLE_STATUS, AAUDIO_SYSTEM_USAGE_ANNOUNCEMENTValue chosen from valid values by obtaining index from FuzzedDataProvider
ContentTypeAAUDIO_CONTENT_TYPE_SPEECH, AAUDIO_CONTENT_TYPE_MUSIC, AAUDIO_CONTENT_TYPE_MOVIE, AAUDIO_CONTENT_TYPE_SONIFICATIONValue chosen from valid values by obtaining index from FuzzedDataProvider
InputPresetAAUDIO_INPUT_PRESET_GENERIC, AAUDIO_INPUT_PRESET_CAMCORDER, AAUDIO_INPUT_PRESET_VOICE_RECOGNITION, AAUDIO_INPUT_PRESET_VOICE_COMMUNICATION, AAUDIO_INPUT_PRESET_UNPROCESSED, AAUDIO_INPUT_PRESET_VOICE_PERFORMANCEValue chosen from valid values by obtaining index from FuzzedDataProvider
BufferCapacityINT32_MIN to INT32_MAXValue obtained from FuzzedDataProvider

This also ensures that the plugin is always deterministic for any given input.

Build

This describes steps to build oboeservice_fuzzer binary.

Android

Steps to build

Build the fuzzer

  $ mm -j$(nproc) oboeservice_fuzzer

Steps to run

To run on device

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

References: