LibAFL cmplog ctx experiment

fuzzers/libafl_cmplog_ctx/builder.Dockerfile

@@ -0,0 +1,56 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+ARG parent_image
+FROM $parent_image
+
+# Uninstall old Rust & Install the latest one.
+RUN if which rustup; then rustup self uninstall -y; fi && \
+    curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs > /rustup.sh && \
+    sh /rustup.sh --default-toolchain nightly-2023-09-21 -y && \
+    rm /rustup.sh
+
+# Install dependencies.
+RUN apt-get update && \
+    apt-get purge clang-15* llvm-15* && \
+    apt-get install -y \
+        build-essential \
+        cargo && \
+    apt-get install -y wget libstdc++5 libtool-bin automake flex bison lsb-release software-properties-common gnupg \
+        libglib2.0-dev libpixman-1-dev python3-setuptools unzip \
+        apt-utils apt-transport-https ca-certificates joe curl && \
+    PATH="/root/.cargo/bin/:$PATH" cargo install cargo-make
+
+RUN wget https://apt.llvm.org/llvm.sh && chmod +x llvm.sh && ./llvm.sh 16
+
+RUN wget https://gist.githubusercontent.com/tokatoka/26f4ba95991c6e33139999976332aa8e/raw/20996c7348bcbab115b79c315cee964f1a19e5f3/createAliases.sh && chmod u+x createAliases.sh && ./createAliases.sh
+
+# Download libafl.
+RUN git clone https://github.com/AFLplusplus/LibAFL /libafl
+
+# Checkout a current commit
+RUN cd /libafl && git pull && git checkout 03d0c9a617a32de8eae41ecef556402ae0ef6058 || true
+# Note that due a nightly bug it is currently fixed to a known version on top!
+
+# Compile libafl.
+RUN cd /libafl && \
+    unset CFLAGS CXXFLAGS && \
+    export LIBAFL_EDGES_MAP_SIZE=2621440 && \
+    cd ./fuzzers/fuzzbench && \
+    PATH="/root/.cargo/bin/:$PATH" cargo build --profile release-fuzzbench --features no_link_main
+
+# Auxiliary weak references.
+RUN cd /libafl/fuzzers/fuzzbench && \
+    clang -c stub_rt.c && \
+    ar r /stub_rt.a stub_rt.o

fuzzers/libafl_cmplog_ctx/description.md

@@ -0,0 +1,11 @@
+# libafl
+
+libafl fuzzer instance 
+  - cmplog feature
+  - persistent mode
+
+Repository: [https://github.com/AFLplusplus/libafl/](https://github.com/AFLplusplus/libafl/)
+
+[builder.Dockerfile](builder.Dockerfile)
+[fuzzer.py](fuzzer.py)
+[runner.Dockerfile](runner.Dockerfile)

fuzzers/libafl_cmplog_ctx/fuzzer.py

@@ -0,0 +1,72 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+"""Integration code for a LibAFL-based fuzzer."""
+
+import os
+import subprocess
+
+from fuzzers import utils
+
+
+def prepare_fuzz_environment(input_corpus):
+    """Prepare to fuzz with a LibAFL-based fuzzer."""
+    os.environ['ASAN_OPTIONS'] = 'abort_on_error=1:detect_leaks=0:'\
+                                 'malloc_context_size=0:symbolize=0:'\
+                                 'allocator_may_return_null=1:'\
+                                 'detect_odr_violation=0:handle_segv=0:'\
+                                 'handle_sigbus=0:handle_abort=0:'\
+                                 'handle_sigfpe=0:handle_sigill=0'
+    os.environ['UBSAN_OPTIONS'] =  'abort_on_error=1:'\
+                                   'allocator_release_to_os_interval_ms=500:'\
+                                   'handle_abort=0:handle_segv=0:'\
+                                   'handle_sigbus=0:handle_sigfpe=0:'\
+                                   'handle_sigill=0:print_stacktrace=0:'\
+                                   'symbolize=0:symbolize_inline_frames=0'
+    # Create at least one non-empty seed to start.
+    utils.create_seed_file_for_empty_corpus(input_corpus)
+
+
+def build():  # pylint: disable=too-many-branches,too-many-statements
+    """Build benchmark."""
+    os.environ[
+        'CC'] = '/libafl/fuzzers/fuzzbench/target/release-fuzzbench/libafl_cc'
+    os.environ[
+        'CXX'] = '/libafl/fuzzers/fuzzbench/target/release-fuzzbench/libafl_cxx'
+
+    os.environ['ASAN_OPTIONS'] = 'abort_on_error=0:allocator_may_return_null=1'
+    os.environ['UBSAN_OPTIONS'] = 'abort_on_error=0'
+
+    cflags = ['--libafl']
+    cxxflags = ['--libafl', '--std=c++14']
+    utils.append_flags('CFLAGS', cflags)
+    utils.append_flags('CXXFLAGS', cxxflags)
+    utils.append_flags('LDFLAGS', cflags)
+
+    os.environ['FUZZER_LIB'] = '/stub_rt.a'
+    utils.build_benchmark()
+
+
+def fuzz(input_corpus, output_corpus, target_binary):
+    """Run fuzzer."""
+    prepare_fuzz_environment(input_corpus)
+    dictionary_path = utils.get_dictionary_path(target_binary)
+    command = [target_binary]
+    if dictionary_path:
+        command += (['-x', dictionary_path])
+    command += (['-o', output_corpus, '-i', input_corpus])
+    fuzzer_env = os.environ.copy()
+    fuzzer_env['LD_PRELOAD'] = '/usr/lib/x86_64-linux-gnu/libjemalloc.so.2'
+    print(command)
+    subprocess.check_call(command, cwd=os.environ['OUT'], env=fuzzer_env)

fuzzers/libafl_cmplog_ctx/runner.Dockerfile

@@ -0,0 +1,25 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+FROM gcr.io/fuzzbench/base-image
+
+RUN apt install libjemalloc2
+
+# This makes interactive docker runs painless:
+ENV LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/out"
+#ENV AFL_MAP_SIZE=2621440
+ENV PATH="$PATH:/out"
+ENV AFL_SKIP_CPUFREQ=1
+ENV AFL_I_DONT_CARE_ABOUT_MISSING_CRASHES=1
+ENV AFL_TESTCACHE_SIZE=2

service/gcbrun_experiment.py

@@ -28,7 +28,6 @@
 TRIGGER_COMMAND = '/gcbrun'
 RUN_EXPERIMENT_COMMAND_STR = f'{TRIGGER_COMMAND} run_experiment.py '
 SKIP_COMMAND_STR = f'{TRIGGER_COMMAND} skip'
-# A DUMMY COMMENT
 
 
 def get_comments(pull_request_number):