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Switch to using afl-clang-fast for afl++. (#5074)

This commit is contained in:
Abhishek Arya 2021-01-31 09:11:42 -08:00 committed by GitHub
parent c38c48cb3d
commit 42018eeb1c
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2 changed files with 7 additions and 19 deletions
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2
infra/base-images/base-builder/Dockerfile
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@ -147,8 +147,6 @@ RUN mkdir $PRECOMPILED_DIR
WORKDIR $SRC
RUN git clone -b stable https://github.com/google/AFL.git afl
RUN git clone -b stable https://github.com/AFLplusplus/AFLplusplus.git aflplusplus && \
cd aflplusplus && \
git checkout 068bef5eab942df0a133c92522f2ab81b28ac636

24
infra/base-images/base-builder/compile_afl
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@ -15,20 +15,6 @@
#
################################################################################
echo "Compiling afl driver to $LIB_FUZZING_ENGINE"
# afl needs its special coverage flags
export COVERAGE_FLAGS="-fsanitize-coverage=trace-pc-guard"
mkdir -p $WORK/afl
pushd $WORK/afl > /dev/null
# Add -Wno-pointer-sign to silence warning (AFL is compiled this way).
$CC $CFLAGS -Wno-pointer-sign -c $SRC/afl/llvm_mode/afl-llvm-rt.o.c
$CXX $CXXFLAGS -std=c++11 -O2 -c $SRC/libfuzzer/afl/*.cpp -I$SRC/libfuzzer
ar r $LIB_FUZZING_ENGINE $WORK/afl/*.o
popd > /dev/null
rm -rf $WORK/afl
echo "Compiling afl++"
# Build and copy afl++ tools necessary for fuzzing.
@ -40,17 +26,21 @@ INITIAL_CXXFLAGS=$CXXFLAGS
INITIAL_CFLAGS=$CFLAGS
unset CXXFLAGS
unset CFLAGS
make clean
AFL_NO_X86=1 PYTHON_INCLUDE=/ make
make -C utils/aflpp_driver
CFLAGS=$INITIAL_CFLAGS
CXXFLAGS=$INITIAL_CXXFLAGS
# Build afl++ driver with existing CFLAGS, CXXFLAGS.
make -C utils/aflpp_driver
cp libAFLDriver.a $LIB_FUZZING_ENGINE
# Some important projects include libraries, copy those even when they don't
# start with "afl-". Use "sort -u" to avoid a warning about duplicates.
ls afl-* *.a *.o *.so | sort -u | xargs cp -t $OUT
popd > /dev/null
export CC="$SRC/aflplusplus/afl-clang-fast"
export CXX="$SRC/aflplusplus/afl-clang-fast++"
echo " done."