fuzzer

Fuzzer for ultrahdr decoder and encoder

This describes steps to build ultrahdr_dec_fuzzer and ultrahdr_enc_fuzzer.

Linux x86/x64

Requirements

• cmake (3.5 or above)
• make
• clang (12.0 or above) needs to support -fsanitize=fuzzer, -fsanitize=fuzzer-no-link

Steps to build

Create a directory inside libultrahdr and change directory

 $ cd libultrahdr
 $ mkdir build
 $ cd build

Build fuzzer with required sanitizers Note: Using clang and setting -DENABLE_FUZZERS=ON is mandatory to enable fuzzers.

 $ cmake .. -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ \
   -DCMAKE_BUILD_TYPE=Debug -DENABLE_FUZZERS=ON -DSANITIZE=address,\
   signed-integer-overflow,unsigned-integer-overflow
 $ make

Steps to run

Create a directory CORPUS_DIR and copy some elementary ultrahdr files (for ultrahdr_dec_fuzzer) or yuv files (for ultrahdr_enc_fuzzer) to that directory

To run the fuzzers

$ ./ultrahdr_dec_fuzzer CORPUS_DIR
$ ./ultrahdr_enc_fuzzer CORPUS_DIR

Android

Steps to build

Build the fuzzers

  $ mm -j$(nproc) ultrahdr_dec_fuzzer
  $ mm -j$(nproc) ultrahdr_enc_fuzzer

Steps to run

Create a directory CORPUS_DIR and copy some elementary ultrahdr files (for ultrahdr_dec_fuzzer) or yuv files (for ultrahdr_enc_fuzzer) to that folder Push this directory to device

To run ultrahdr_dec_fuzzer on device

  $ adb sync data
  $ adb shell /data/fuzz/arm64/ultrahdr_dec_fuzzer/ultrahdr_dec_fuzzer CORPUS_DIR

To run ultrahdr_enc_fuzzer on device

  $ adb sync data
  $ adb shell /data/fuzz/arm64/ultrahdr_enc_fuzzer/ultrahdr_enc_fuzzer CORPUS_DIR

To run ultrahdr_dec_fuzzer on host

  $ $ANDROID_HOST_OUT/fuzz/x86_64/ultrahdr_dec_fuzzer/ultrahdr_dec_fuzzer CORPUS_DIR

To run ultrahdr_enc_fuzzer on host

  $ $ANDROID_HOST_OUT/fuzz/x86_64/ultrahdr_enc_fuzzer/ultrahdr_enc_fuzzer CORPUS_DIR