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tint: add SPIRV-Tools fuzzers (#6515) 

* tint: add SPIRV-Tools fuzzers

* Fix script.

* Move to release builds.

* Reduce the number of targets that are built in CI.
This commit is contained in:
Alastair Donaldson 2021-10-08 16:07:48 +01:00 committed by GitHub
parent af7ef0f6be
commit acc4ead138
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1 changed files with 32 additions and 9 deletions
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41
projects/tint/build.sh
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@ -25,15 +25,27 @@ pushd out/Debug
# when building tint.
CFLAGS="$CFLAGS -fno-sanitize=vptr" \
CXXFLAGS="$CXXFLAGS -fno-sanitize=vptr" \
cmake -GNinja ../.. -DTINT_BUILD_FUZZERS=ON -DTINT_BUILD_SPIRV_TOOLS_FUZZER=ON -DTINT_BUILD_TESTS=OFF -DTINT_LIB_FUZZING_ENGINE_LINK_OPTIONS=$LIB_FUZZING_ENGINE
cmake -GNinja ../.. -DCMAKE_BUILD_TYPE=Release -DTINT_BUILD_FUZZERS=ON -DTINT_BUILD_SPIRV_TOOLS_FUZZER=ON -DTINT_BUILD_TESTS=OFF -DTINT_LIB_FUZZING_ENGINE_LINK_OPTIONS=$LIB_FUZZING_ENGINE
SPIRV_FUZZERS="tint_spv_reader_fuzzer\
tint_spv_reader_msl_writer_fuzzer\
tint_spv_reader_wgsl_writer_fuzzer\
tint_spv_reader_hlsl_writer_fuzzer\
tint_spv_reader_spv_writer_fuzzer"
# TODO(afd): add tint_spirv_tools_fuzzer
if [ -n "${OSS_FUZZ_CI-}" ]
then
# When running in the CI, restrict to a small number of fuzz targets to save
# time and disk space. A SPIR-V Tools-based fuzzer that uses the HLSL
# back-end, and a regular fuzzer that uses the MSL back-end, are selected.
SPIRV_TOOLS_FUZZERS="tint_spirv_tools_hlsl_writer_fuzzer"
SPIRV_FUZZERS="tint_spv_reader_msl_writer_fuzzer\
${SPIRV_TOOLS_FUZZERS}"
else
SPIRV_TOOLS_FUZZERS="tint_spirv_tools_hlsl_writer_fuzzer\
tint_spirv_tools_msl_writer_fuzzer\
tint_spirv_tools_spv_writer_fuzzer\
tint_spirv_tools_wgsl_writer_fuzzer"
SPIRV_FUZZERS="tint_spv_reader_hlsl_writer_fuzzer\
tint_spv_reader_msl_writer_fuzzer\
tint_spv_reader_spv_writer_fuzzer\
tint_spv_reader_wgsl_writer_fuzzer\
${SPIRV_TOOLS_FUZZERS}"
fi
# The spirv-as tool is used to build seed corpora
ninja ${SPIRV_FUZZERS}
@ -53,7 +65,7 @@ unset CFLAGS
unset CXXFLAGS
export AFL_NOOPT=1
cmake -GNinja ../..
cmake -GNinja ../.. -DCMAKE_BUILD_TYPE=Release
ninja spirv-as
# Restore instrumentation options
@ -81,3 +93,14 @@ for fuzzer in $SPIRV_FUZZERS
do
cp "$WORK/seed_corpus.zip" "$OUT/${fuzzer}_seed_corpus.zip"
done
for fuzzer in $SPIRV_TOOLS_FUZZERS
do
echo "[libfuzzer]
max_len = 10000
cross_over = 0
mutate_depth = 1
tint_enable_all_mutations = false
tint_mutation_batch_size = 5
" > "$OUT/${fuzzer}.options"
done