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Fix fuzz tests to work on oss-fuzz

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- the tests now build/run/check_build with libfuzzer on oss-fuzz
- centipede is removed as it builds/runs but do not check_build
(timeout due to arguments not parsed correctly)

Bug: oss-fuzz:69508

Change-Id: Id063565fc4cce02fc5e36c7d8499d6de9ff54345
This commit is contained in:
Vincent Rabaud 2024-06-20 14:38:21 +02:00
parent 3ba8af1a33
commit 9ce982fdf2
3 changed files with 12 additions and 4 deletions
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2
tests/fuzzer/CMakeLists.txt
View File

@ -35,7 +35,7 @@ set(fuzztest_SOURCE_DIR ${CMAKE_BINARY_DIR}/_deps/fuzztest-src)
FetchContent_Declare( FetchContent_Declare(
fuzztest fuzztest
GIT_REPOSITORY https://github.com/google/fuzztest.git GIT_REPOSITORY https://github.com/google/fuzztest.git
GIT_TAG a40caf40aaf621dd0e04f9d8b47d1153fd2682d2 GIT_TAG ce454aced15f7dc2cc96aeae969a6204b563b4c9
GIT_PROGRESS TRUE GIT_PROGRESS TRUE
PATCH_COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/patch.sh) PATCH_COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/patch.sh)

12
tests/fuzzer/oss-fuzz/build.sh
View File

@ -39,21 +39,27 @@
set -eu set -eu
# Avoid fuzz engines that do not compile. # Avoid fuzz engines that do not compile.
if [[ "$FUZZING_ENGINE" != "libfuzzer" && "$FUZZING_ENGINE" != "centipede" ]]; then if [[ "$FUZZING_ENGINE" != "libfuzzer" ]]; then
exit exit
fi fi
EXTRA_CMAKE_FLAGS=""
if [ "$FUZZING_ENGINE" == "libfuzzer" ]
then
export CXXFLAGS="${CXXFLAGS} -DFUZZTEST_COMPATIBILITY_MODE"
EXTRA_CMAKE_FLAGS="-DFUZZTEST_COMPATIBILITY_MODE=libfuzzer"
fi
# limit allocation size to reduce spurious OOMs # limit allocation size to reduce spurious OOMs
WEBP_CFLAGS="$CFLAGS -DWEBP_MAX_IMAGE_SIZE=838860800" # 800MiB WEBP_CFLAGS="$CFLAGS -DWEBP_MAX_IMAGE_SIZE=838860800" # 800MiB
export CFLAGS="$WEBP_CFLAGS" export CFLAGS="$WEBP_CFLAGS"
cmake -S . -B build -DWEBP_BUILD_FUZZTEST=ON cmake -S . -B build -DWEBP_BUILD_FUZZTEST=ON ${EXTRA_CMAKE_FLAGS}
cd build && make -j$(nproc) && cd .. cd build && make -j$(nproc) && cd ..
find $SRC/libwebp-test-data -type f -size -32k -iname "*.webp" \ find $SRC/libwebp-test-data -type f -size -32k -iname "*.webp" \
-exec zip -qju fuzz_seed_corpus.zip "{}" \; -exec zip -qju fuzz_seed_corpus.zip "{}" \;
# build fuzztests
# The following is taken from https://github.com/google/oss-fuzz/blob/31ac7244748ea7390015455fb034b1f4eda039d9/infra/base-images/base-builder/compile_fuzztests.sh#L59 # The following is taken from https://github.com/google/oss-fuzz/blob/31ac7244748ea7390015455fb034b1f4eda039d9/infra/base-images/base-builder/compile_fuzztests.sh#L59
# Iterate the fuzz binaries and list each fuzz entrypoint in the binary. For # Iterate the fuzz binaries and list each fuzz entrypoint in the binary. For
# each entrypoint create a wrapper script that calls into the binaries the # each entrypoint create a wrapper script that calls into the binaries the

2
tests/fuzzer/patch.sh
View File

@ -8,3 +8,5 @@ after="if (data.size() == 0) return;"
sed -i "s/${before}/${after}/" ./fuzztest/internal/compatibility_mode.cc sed -i "s/${before}/${after}/" ./fuzztest/internal/compatibility_mode.cc
sed -i "s/set(GTEST_HAS_ABSL ON)/set(GTEST_HAS_ABSL OFF)/" \ sed -i "s/set(GTEST_HAS_ABSL ON)/set(GTEST_HAS_ABSL OFF)/" \
./cmake/BuildDependencies.cmake ./cmake/BuildDependencies.cmake
# Fixes https://github.com/google/fuzztest/issues/1192
git revert --no-commit ed6f817771702bf7823b73498d0e1914475f2313