From 311085c3c5c60476fd6472d0229f888c3664824e Mon Sep 17 00:00:00 2001 From: IsaacTrost <77888524+IsaacTrost@users.noreply.github.com> Date: Mon, 26 Jan 2026 09:15:48 -0500 Subject: [PATCH] Debugger integration (#414) * changed configuration to focus on seed-gen * added nomminally working debug_subagent_task * debugging process * debugging process * debugging process * debugging process * got debug subagent to work more reliably * debugging why it cant find the seed file * added more tests * more debugging of debugginf functionality * more debugging of debugger * debugging working, scripts bad because some symbols are not found * mostly working live debugging, still a bit pricy though * Added hybrid mode that will do batch, then try interactive if that fails * fixes * fixes, updating docker interactive * updating mi parsing for gdb * modifications to the mi parser * Improve coverage tracking precision (#401) * Improve coverage tracking precision Previously coverage tracking included all regions. This changes coverage tracking to be more precise. Macros that result in code are represented as a single line in the function, and any executed line in the macro will make that line 'covered'. Beyound that, only CodeRegions will count. This will prevent code guarded by #if that aren't in the binary from being considered reachable for example. The idea is that seed-gen would have more accurate information when selecting functions to target. I've done some testing and it appears as if the new implementation in general reaches more lines and covers more functions. * Fix macro coverage leaking across files due to missing filename in key The expansion_coverage map used (line, col) as key without filename, causing coverage from one file to incorrectly appear in another when macros were at the same coordinates. * Recursively expand macros and add named types for coverage data - Process ExpansionRegion target_regions recursively instead of counting only the call site line - Add coordinate index for O(1) expansion lookups - Cache computed expansion lines to avoid recomputation across functions - Use bulk set operations for better performance - Prevent infinite loops with visited set for circular macro references - Add named types for coverage data structures: - RegionCoords, ExpansionKey, CachedExpansionLines - Type aliases: ExpansionMap, CoordToFilenames, ExpansionLinesCache - Add comprehensive tests for nested macros and edge cases * fix: fixing `line 110: set: -g: invalid option` for Fish shell (#408) Co-authored-by: kevin-valerio * working state * working state for monolith, still needs refactor * limit grep output (whoops) and fix building to force optimization flags * added function lookup tool * added better build selection logic, and avoided c ode duplication * fix fuzzer selection to ignore debug * added debug builds as a seperate 'sanitizor' * fixed build system, more in line with other dependancies now * adding new better debug targets, and logging * final changes before testing * improving test coverage * improving test coverage * feat: add extract_povs command to buttercup-util (#410) Add new CLI subcommand to extract PoVs, stack traces, and patches from Redis submissions into a structured directory format for easy analysis. Features: - Extracts crash inputs (PoV files) via kubectl cp from cluster pods - Writes fuzzer and tracer stack traces to text files - Exports associated patches with metadata - Organizes output by project/task_id/vulnerability - Supports filtering by task_id and passed_only options - Skips empty patch trackers (placeholders that never received content) * Use git-lfs when downloading challenges * improving test coverage * Delete b.txt * final changes before run hopefully * feat: add extract_povs command to buttercup-util (#410) Add new CLI subcommand to extract PoVs, stack traces, and patches from Redis submissions into a structured directory format for easy analysis. Features: - Extracts crash inputs (PoV files) via kubectl cp from cluster pods - Writes fuzzer and tracer stack traces to text files - Exports associated patches with metadata - Organizes output by project/task_id/vulnerability - Supports filtering by task_id and passed_only options - Skips empty patch trackers (placeholders that never received content) * Sanitize exception messages for git clone command (#411) * Sanitize exception messages for git clone command * Update test case * Don't sanitize exception if there is no PAT * merging with main and fixing tests which tested old build system * fixing erronous changes from testing * fix silly linting errors * reformatted for linter * fixing failing tests * fixing failing tests * linting * restore scripts to remove debugging changes --------- Co-authored-by: Henrik Brodin <90325907+hbrodin@users.noreply.github.com> Co-authored-by: Kevin Valerio <24193167+kevin-valerio@users.noreply.github.com> Co-authored-by: kevin-valerio Co-authored-by: Ronald Eytchison <58823072+reytchison@users.noreply.github.com> --- common/protos/msg.proto | 1 + .../src/buttercup/common/build_selection.py | 281 +++ common/src/buttercup/common/challenge_task.py | 206 ++- .../src/buttercup/common/clusterfuzz_utils.py | 7 +- .../common/datastructures/msg_pb2.py | 330 +++- .../common/datastructures/msg_pb2.pyi | 1 + .../buttercup/common/docker_interactive.py | 231 +++ .../buttercup/common/reproduce_multiple.py | 55 +- common/tests/test_challenge_task.py | 389 +++++ common/tests/test_get_fuzz_targets.py | 16 +- deployment/k8s/charts/seed-gen/values.yaml | 8 +- deployment/k8s/templates/common-env.yaml | 40 + .../k8s/values-upstream-minikube.template | 4 + deployment/k8s/values.yaml | 25 +- .../buttercup/fuzzing_infra/builder_bot.py | 2 + .../orchestrator/scheduler/scheduler.py | 2 + scripts/common.sh | 8 - seed-gen/Makefile | 6 +- seed-gen/pyproject.toml | 4 + .../seed_gen/debug_subagent_unified.py | 1412 +++++++++++++++ .../seed_gen/interactive_debug_docker.py | 292 ++++ .../src/buttercup/seed_gen/prompt/debug.py | 419 +++++ .../seed_gen/prompt/vuln_discovery.py | 125 ++ .../src/buttercup/seed_gen/sandbox/runner.py | 14 +- .../src/buttercup/seed_gen/sandbox/sandbox.py | 24 +- .../src/buttercup/seed_gen/seed_explore.py | 2 + .../src/buttercup/seed_gen/seed_gen_bot.py | 128 +- seed-gen/src/buttercup/seed_gen/task.py | 470 ++++- .../src/buttercup/seed_gen/vuln_base_task.py | 19 +- .../seed_gen/vuln_discovery_debug_task.py | 561 ++++++ .../seed_gen/vuln_discovery_delta.py | 10 + .../buttercup/seed_gen/vuln_discovery_full.py | 10 + seed-gen/test/conftest.py | 8 + seed-gen/test/test_debug_subagent_unified.py | 1547 +++++++++++++++++ .../test/test_vuln_discovery_debug_task.py | 676 +++++++ 35 files changed, 7190 insertions(+), 143 deletions(-) create mode 100644 common/src/buttercup/common/build_selection.py create mode 100644 common/src/buttercup/common/docker_interactive.py create mode 100644 seed-gen/src/buttercup/seed_gen/debug_subagent_unified.py create mode 100644 seed-gen/src/buttercup/seed_gen/interactive_debug_docker.py create mode 100644 seed-gen/src/buttercup/seed_gen/prompt/debug.py create mode 100644 seed-gen/src/buttercup/seed_gen/vuln_discovery_debug_task.py create mode 100644 seed-gen/test/test_debug_subagent_unified.py create mode 100644 seed-gen/test/test_vuln_discovery_debug_task.py diff --git a/common/protos/msg.proto b/common/protos/msg.proto index 76dae473..322f33c8 100644 --- a/common/protos/msg.proto +++ b/common/protos/msg.proto @@ -26,6 +26,7 @@ enum BuildType { COVERAGE = 1; TRACER_NO_DIFF = 2; PATCH = 3; + FUZZER_DEBUG = 4; } message SourceDetail { diff --git a/common/src/buttercup/common/build_selection.py b/common/src/buttercup/common/build_selection.py new file mode 100644 index 00000000..651c616a --- /dev/null +++ b/common/src/buttercup/common/build_selection.py @@ -0,0 +1,281 @@ +"""Utilities for selecting and resolving builds and binaries.""" + +import logging +import stat +from dataclasses import dataclass +from pathlib import Path + +from buttercup.common.challenge_task import ChallengeTask +from buttercup.common.datastructures.msg_pb2 import BuildOutput, BuildType + +logger = logging.getLogger(__name__) + + +@dataclass +class SelectedBuild: + """Result of build selection for a specific harness""" + + build_output: BuildOutput + task: ChallengeTask + using_debug: bool = False + binary_path: Path | None = None + binary_name: str | None = None + + +def select_build_for_harness( + build_outputs: list[BuildOutput], + builds_cache: list[ChallengeTask], + harness_name: str, + prefer_sanitizer: str = "debug", +) -> SelectedBuild | None: + """Select the best build that contains the specified harness. + + Selection priority: + 1. FUZZER_DEBUG build with harness (best for debugging - has debug symbols, no sanitizer) + 2. Preferred sanitizer build with harness (default: address) + 3. Any build with harness + 4. First build (fallback) + + Args: + build_outputs: List of build outputs + builds_cache: List of cached ChallengeTask instances (must match build_outputs) + harness_name: Name of the harness binary to find + prefer_sanitizer: Preferred sanitizer type (default: "address") + + Returns: + SelectedBuild with build_output and task, or None if no builds available + """ + if not builds_cache: + return None + + # First, try to find FUZZER_DEBUG build (best for debugging) + for build, cached_task in zip(build_outputs, builds_cache, strict=False): + if build.build_type == BuildType.FUZZER_DEBUG: + if _has_harness_in_build(cached_task, harness_name, is_debug_build=True): + logger.info(f"Using FUZZER_DEBUG build with harness '{harness_name}' (task_id: {build.task_id})") + binary_path, binary_name = resolve_actual_binary( + cached_task, harness_name, using_debug=True, is_fuzzer_debug=True + ) + return SelectedBuild( + build_output=build, + task=cached_task, + using_debug=True, + binary_path=binary_path, + binary_name=binary_name, + ) + + # Second, try to find preferred sanitizer build with the harness + for build, cached_task in zip(build_outputs, builds_cache, strict=False): + if build.sanitizer == prefer_sanitizer: + if _has_harness(cached_task, harness_name): + logger.info( + f"Using {prefer_sanitizer} sanitizer build with harness '{harness_name}' (task_id: {build.task_id})" + ) + using_debug = _has_debug_binary(cached_task, harness_name) + binary_path, binary_name = resolve_actual_binary(cached_task, harness_name, using_debug) + return SelectedBuild( + build_output=build, + task=cached_task, + using_debug=using_debug, + binary_path=binary_path, + binary_name=binary_name, + ) + + # If no preferred sanitizer build found, try any build with the harness + for build, cached_task in zip(build_outputs, builds_cache, strict=False): + if _has_harness(cached_task, harness_name): + logger.info( + f"Using build with harness '{harness_name}' (task_id: {build.task_id}, sanitizer: {build.sanitizer})" + ) + using_debug = _has_debug_binary(cached_task, harness_name) + binary_path, binary_name = resolve_actual_binary(cached_task, harness_name, using_debug) + return SelectedBuild( + build_output=build, + task=cached_task, + using_debug=using_debug, + binary_path=binary_path, + binary_name=binary_name, + ) + + # Fallback to first build + logger.warning( + f"No build found with harness '{harness_name}', using first build " + f"(task_id: {build_outputs[0].task_id}). This may fail if harness doesn't exist." + ) + # Try to resolve binary for fallback case too + try: + binary_path, binary_name = resolve_actual_binary(builds_cache[0], harness_name, False) + except Exception as e: + logger.warning(f"Failed to resolve binary for fallback build: {e}") + binary_path, binary_name = Path(""), "" + + return SelectedBuild( + build_output=build_outputs[0], + task=builds_cache[0], + using_debug=False, + binary_path=binary_path, + binary_name=binary_name, + ) + + +def _has_harness(task: ChallengeTask, harness_name: str) -> bool: + """Check if task has the specified harness (debug or regular binary)""" + build_dir = task.get_build_dir() + if not build_dir or not build_dir.exists(): + return False + + debug_binary_path = task.get_debug_binary_path(harness_name) + regular_binary_path = build_dir / harness_name + + return (debug_binary_path and debug_binary_path.exists()) or regular_binary_path.exists() + + +def _has_harness_in_build(task: ChallengeTask, harness_name: str, is_debug_build: bool = False) -> bool: + """Check if task has the specified harness in a specific build type. + + Args: + task: ChallengeTask with the build + harness_name: Name of the harness + is_debug_build: If True, check in /out (FUZZER_DEBUG build), + otherwise check in /out or /out/debug (legacy) + """ + build_dir = task.get_build_dir() + if not build_dir or not build_dir.exists(): + return False + + if is_debug_build: + # FUZZER_DEBUG builds output to /out (same as regular builds) + return (build_dir / harness_name).exists() + else: + # Legacy: check both /out and /out/debug + regular_binary_path = build_dir / harness_name + debug_binary_path = task.get_debug_binary_path(harness_name) + return regular_binary_path.exists() or ( + debug_binary_path is not None and debug_binary_path is not Path("") and debug_binary_path.exists() + ) + + +def _has_debug_binary(task: ChallengeTask, harness_name: str) -> bool: + """Check if task has debug binary for the harness""" + debug_binary_path = task.get_debug_binary_path(harness_name) + return debug_binary_path is not None and debug_binary_path.exists() + + +def resolve_actual_binary( + task: ChallengeTask, + harness_name: str, + using_debug: bool, + is_fuzzer_debug: bool = False, +) -> tuple[Path, str]: + """Resolve the actual binary path, handling wrapper scripts. + + Some harness binaries are wrapper scripts that call the actual ELF binary. + This method detects such cases and finds the real binary. + + Args: + task: ChallengeTask with the build + harness_name: Name of the harness + using_debug: Whether to use debug binary + is_fuzzer_debug: If True, this is a FUZZER_DEBUG build (binary in /out, not /out/debug) + + Returns: + Tuple of (binary_path, binary_name) + """ + build_dir = task.get_build_dir() + if not build_dir or not build_dir.exists(): + raise ValueError(f"Build directory not found: {build_dir}") + + # Get initial binary path + if using_debug: + # FUZZER_DEBUG builds output to /out (same as regular builds) + harness_binary_path = build_dir / harness_name + + if not harness_binary_path or not harness_binary_path.exists(): + raise ValueError(f"Debug binary not found for harness: {harness_name}") + else: + harness_binary_path = build_dir / harness_name + if not harness_binary_path.exists(): + available_files = [f.name for f in build_dir.iterdir()] if build_dir.is_dir() else [] + raise ValueError( + f"Harness binary '{harness_name}' not found in {build_dir}. Available files: {available_files}" + ) + + # Ensure execute permissions + current_perms = harness_binary_path.stat().st_mode + harness_binary_path.chmod(current_perms | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH) + + # Check if it's an ELF binary + try: + with open(harness_binary_path, "rb") as f: + magic = f.read(4) + is_elf = magic == b"\x7fELF" + except Exception: + is_elf = False + + binary_size = harness_binary_path.stat().st_size + + # If it's a valid ELF binary of reasonable size, use it as-is + if is_elf and binary_size >= 1024: + return (harness_binary_path, harness_name) + + # Otherwise, it's likely a wrapper script - search for the actual binary + logger.warning( + f"File '{harness_name}' appears to be a wrapper script (size={binary_size}, is_elf={is_elf}). " + f"Searching for actual ELF binary..." + ) + + # Try to find the actual binary by looking for ELF files in the build directory + # Priority: 1) Base name without suffix, 2) Any ELF file with base name as prefix + base_name = harness_name + + # Remove common sanitizer suffixes + for suffix in ["_nalloc", "_asan", "_msan", "_ubsan", "_tsan", "_hwasan"]: + if base_name.endswith(suffix): + base_name = base_name[: -len(suffix)] + break + + # First, try the base name directly + candidate_path = build_dir / base_name + if candidate_path.exists() and candidate_path.is_file(): + try: + with open(candidate_path, "rb") as f: + candidate_magic = f.read(4) + candidate_is_elf = candidate_magic == b"\x7fELF" + candidate_size = candidate_path.stat().st_size + if candidate_is_elf and candidate_size > 1024: + logger.info( + f"Found actual binary: {base_name} (size={candidate_size}, is_elf={candidate_is_elf}). " + f"Using this instead of wrapper '{harness_name}'." + ) + # Set execute permissions + current_perms = candidate_path.stat().st_mode + candidate_path.chmod(current_perms | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH) + return (candidate_path, base_name) + except Exception as e: + logger.debug(f"Error checking candidate {base_name}: {e}") + + # If base name didn't work, search for any ELF file with base name as prefix + if build_dir.is_dir(): + for candidate in build_dir.iterdir(): + if candidate.is_file() and candidate != harness_binary_path: + if candidate.name.startswith(base_name): + try: + with open(candidate, "rb") as f: + candidate_magic = f.read(4) + candidate_is_elf = candidate_magic == b"\x7fELF" + candidate_size = candidate.stat().st_size + if candidate_is_elf and candidate_size > 1024: + logger.info( + f"Found actual binary: {candidate.name} (size={candidate_size}). " + f"Using this instead of wrapper '{harness_name}'." + ) + # Set execute permissions + current_perms = candidate.stat().st_mode + candidate.chmod(current_perms | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH) + return (candidate, candidate.name) + except Exception as e: + logger.debug(f"Error checking candidate {candidate.name}: {e}") + + # If we couldn't find a better binary, use the original (even if it's a wrapper) + logger.warning(f"Could not find actual ELF binary, using original: {harness_name}") + return (harness_binary_path, harness_name) diff --git a/common/src/buttercup/common/challenge_task.py b/common/src/buttercup/common/challenge_task.py index 30fa72fb..1a7b7069 100644 --- a/common/src/buttercup/common/challenge_task.py +++ b/common/src/buttercup/common/challenge_task.py @@ -6,6 +6,7 @@ import os import re import shlex import shutil +import stat import subprocess import tempfile import uuid @@ -255,6 +256,29 @@ class ChallengeTask: def get_build_dir(self) -> Path | None: return self.get_oss_fuzz_path() / "build" / "out" / self.project_name + def get_debug_binary_path(self, harness_name: str) -> Path | None: + """Get the path to a debug binary/JAR. + + Returns path to binaries/JARs built with build_fuzzers_with_debug_symbols(). + All debug builds use the /out/debug output directory, so binaries are at: + .../build/out//debug/ + + For C++: The binary will be an ELF executable + For Java: The binary will be a JAR file (with .jar extension) + + Args: + harness_name: Name of the harness (e.g., 'libpng_read_fuzzer') + + Returns: + Path to the debug binary/JAR or None if build_dir doesn't exist + """ + build_dir = self.get_build_dir() + if build_dir is None: + return None + + # Debug builds use /out/debug, so binaries are in build_dir / "debug" + return build_dir / "debug" / harness_name + def get_diffs(self) -> list[Path]: return get_diffs(self.get_diff_path()) @@ -583,6 +607,15 @@ class ChallengeTask: env: dict[str, str] | None = None, env_helper: dict[str, str] | None = None, ) -> CommandResult: + if sanitizer == "debug": + return self.build_fuzzers_with_debug_symbols( + use_source_dir=use_source_dir, + architecture=architecture, + engine=engine, + sanitizer="none", + env=env, + env_helper=env_helper, + ) logger.info( "Building fuzzers for project %s | architecture=%s | engine=%s | sanitizer=%s | env=%s | use_source_dir=%s", self.project_name, @@ -592,10 +625,13 @@ class ChallengeTask: env, use_source_dir, ) + # Convert "debug" to "none" for oss-fuzz helper compatibility + sanitizer_for_helper = "none" if sanitizer == "debug" else sanitizer + kwargs = { "architecture": architecture, "engine": engine, - "sanitizer": sanitizer, + "sanitizer": sanitizer_for_helper, "e": env, } if self.workdir_from_dockerfile() == Path("/src"): @@ -617,6 +653,147 @@ class ChallengeTask: return self._run_helper_cmd(cmd, env_helper=env_helper) + def _get_build_sh_path(self) -> Path: + """Get the path to the project's build.sh script.""" + return self.get_source_path() / "build.sh" + + @read_write_decorator + def build_fuzzers_with_debug_symbols( + self, + use_source_dir: bool = True, + *, + architecture: str | None = ARCHITECTURE, + engine: str | None = None, + sanitizer: str | None = None, + env: dict[str, str] | None = None, + env_helper: dict[str, str] | None = None, + ) -> CommandResult: + """Build fuzzers with debug symbols (FUZZER_DEBUG build type). + + **Language Agnostic**: This method works for any language. For C++ projects, + it sets CFLAGS/CXXFLAGS to include full debug symbols. For Java or other languages, + setting CFLAGS/CXXFLAGS has no effect (which is fine). + + **Build Type**: This creates a FUZZER_DEBUG build that outputs to /out (same as + FUZZER and COVERAGE builds). It's stored separately in the build map by build_type. + + The source directory is never modified (build process only reads from it). + + Process: + 1. For C++: Overrides CFLAGS/CXXFLAGS to use -ggdb -gdwarf-4 -fno-inline and -Og + 2. For Java/other: CFLAGS/CXXFLAGS are ignored (no effect) + 3. Sets sanitizer=None to disable sanitizer instrumentation (cleaner debugging) + 4. Builds the fuzzers using the original source directory to /out + + Args: + use_source_dir: Whether to use source directory + architecture: Target architecture + engine: Fuzzing engine + sanitizer: Sanitizer to use (typically None for debug builds) + env: Environment variables (will be merged with CFLAGS/CXXFLAGS overrides) + env_helper: Environment variables for the helper process + + Returns: + CommandResult from the build process + + Raises: + ChallengeTaskError: If source directory doesn't exist + """ + logger.info( + "Building fuzzers with debug symbols for project %s", + self.project_name, + ) + + # Get source directory path + source_path = self.get_source_path() + if not source_path.exists(): + raise ChallengeTaskError(f"Source directory not found at {source_path}") + + # Prepare environment variables + debug_env = env.copy() if env else {} + + # For FUZZER_DEBUG build type, output goes to /out (same as other builds) + # The build_type distinguishes it from other builds in the build map + # Note: We don't set OUT="/out/debug" here because this build is meant to + # be a full replacement build (like coverage), not an auxiliary debug build + + # Override CFLAGS/CXXFLAGS for full debug symbols + # For C++ projects, this enables full debug symbols (-ggdb -gdwarf-4 -fno-inline) + # For Java/other projects, these flags are ignored (no effect) + existing_cflags = debug_env.get("CFLAGS", "") + existing_cxxflags = debug_env.get("CXXFLAGS", "") + logger.info(f"Existing CFLAGS: {existing_cflags}") + logger.info(f"Existing CXXFLAGS: {existing_cxxflags}") + + # Replace -gline-tables-only with -ggdb -gdwarf-4 -fno-inline for CFLAGS + # Also replace any optimization flags with -Og + if "-gline-tables-only" in existing_cflags: + # Replace -gline-tables-only and any -O* flags + flags = existing_cflags.replace("-gline-tables-only", "-ggdb -gdwarf-4 -fno-inline") + flags = re.sub(r"-O[0-9sglz]*", "-Og", flags) + debug_env["CFLAGS"] = flags.strip() + elif "-g" in existing_cflags: + # Remove all -g* flags, replace -O* flags with -Og, then add -ggdb -gdwarf-4 -fno-inline + flags = re.sub(r"-g[^\s]*", "", existing_cflags) + flags = re.sub(r"-O[0-9sglz]*", "-Og", flags) + debug_env["CFLAGS"] = f"{flags.strip()} -ggdb -gdwarf-4 -fno-inline".strip() + else: + # Replace any -O* flags with -Og + base_flags = "-Og -fno-omit-frame-pointer" if not existing_cflags else existing_cflags + base_flags = re.sub(r"-O[0-9sglz]*", "-Og", base_flags) + debug_env["CFLAGS"] = f"{base_flags} -ggdb -gdwarf-4 -fno-inline".strip() + + # Replace -gline-tables-only with -ggdb -gdwarf-4 -fno-inline for CXXFLAGS + # Also replace any optimization flags with -Og + if "-gline-tables-only" in existing_cxxflags: + # Replace -gline-tables-only and any -O* flags + flags = existing_cxxflags.replace("-gline-tables-only", "-ggdb -gdwarf-4 -fno-inline") + flags = re.sub(r"-O[0-9sglz]*", "-Og", flags) + debug_env["CXXFLAGS"] = flags.strip() + elif "-g" in existing_cxxflags: + # Remove all -g* flags, replace -O* flags with -Og, then add -ggdb -gdwarf-4 -fno-inline + flags = re.sub(r"-g[^\s]*", "", existing_cxxflags) + flags = re.sub(r"-O[0-9sglz]*", "-Og", flags) + debug_env["CXXFLAGS"] = f"{flags.strip()} -ggdb -gdwarf-4 -fno-inline".strip() + else: + # Replace any -O* flags with -Og + base_flags = "-Og -fno-omit-frame-pointer" if not existing_cxxflags else existing_cxxflags + base_flags = re.sub(r"-O[0-9sglz]*", "-Og", base_flags) + debug_env["CXXFLAGS"] = f"{base_flags} -ggdb -gdwarf-4 -fno-inline".strip() + + logger.info(f"CFLAGS override: {debug_env.get('CFLAGS', 'not set')}") + logger.info(f"CXXFLAGS override: {debug_env.get('CXXFLAGS', 'not set')}") + logger.info("OUT set to /out/debug (separate output directory)") + logger.debug( + "Note: CFLAGS/CXXFLAGS only affect C++ projects. For Java/other languages, these flags are ignored." + ) + + # Convert "debug" to "none" for oss-fuzz helper compatibility + sanitizer_for_helper = "none" if sanitizer == "debug" else sanitizer + + kwargs = { + "architecture": architecture, + "engine": engine, + "sanitizer": sanitizer_for_helper, + "e": debug_env, + } + if self.workdir_from_dockerfile() == Path("/src"): + kwargs["mount_path"] = f"/src/{self.focus}" + + # Build using the original source directory + # The build process only reads from source and writes to /out (same as other builds) + source_subpath = self.get_source_subpath() + assert source_subpath is not None + cmd = self._get_helper_cmd( + "build_fuzzers", + self.project_name, + str((self.task_dir / source_subpath).absolute()) if use_source_dir else None, + **kwargs, + ) + + logger.info(f"Building with debug symbols using source directory: {source_path}") + return self._run_helper_cmd(cmd, env_helper=env_helper) + @read_write_decorator def build_fuzzers_with_cache( self, @@ -680,12 +857,15 @@ class ChallengeTask: sanitizer: str | None = None, env: dict[str, str] | None = None, ) -> CommandResult: + # Convert "debug" to "none" for oss-fuzz helper compatibility + sanitizer_for_helper = "none" if sanitizer == "debug" else sanitizer + logger.info( "Checking build for project %s | architecture=%s | engine=%s | sanitizer=%s | env=%s", self.project_name, architecture, engine, - sanitizer, + sanitizer_for_helper, env, ) cmd = self._get_helper_cmd( @@ -693,7 +873,7 @@ class ChallengeTask: self.project_name, architecture=architecture, engine=engine, - sanitizer=sanitizer, + sanitizer=sanitizer_for_helper, e=env, ) @@ -719,6 +899,19 @@ class ChallengeTask: architecture, env, ) + + # Ensure the fuzzer binary has execute permissions + # This is needed because some builds (especially when copied) may not preserve permissions + build_dir = self.get_build_dir() + if build_dir and build_dir.exists(): + fuzzer_path = build_dir / fuzzer_name + if fuzzer_path.exists(): + try: + current_perms = fuzzer_path.stat().st_mode + fuzzer_path.chmod(current_perms | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH) + except Exception as e: + logger.warning(f"Failed to set execute permissions on {fuzzer_path}: {e}") + kwargs: dict[str, Any] = { "architecture": architecture, "e": env, @@ -758,6 +951,9 @@ class ChallengeTask: sanitizer: str | None = None, env: dict[str, str] | None = None, ) -> CommandResult: + # Convert "debug" to "none" for oss-fuzz helper compatibility + sanitizer_for_helper = "none" if sanitizer == "debug" else sanitizer + logger.info( "Running fuzzer for project %s | harness_name=%s | fuzzer_args=%s | " "corpus_dir=%s | architecture=%s | engine=%s | sanitizer=%s | env=%s", @@ -767,14 +963,14 @@ class ChallengeTask: corpus_dir, architecture, engine, - sanitizer, + sanitizer_for_helper, env, ) kwargs = { "corpus-dir": corpus_dir, "architecture": architecture, "engine": engine, - "sanitizer": sanitizer, + "sanitizer": sanitizer_for_helper, "e": env, } cmd = self._get_helper_cmd( diff --git a/common/src/buttercup/common/clusterfuzz_utils.py b/common/src/buttercup/common/clusterfuzz_utils.py index 0bc73d82..746da987 100644 --- a/common/src/buttercup/common/clusterfuzz_utils.py +++ b/common/src/buttercup/common/clusterfuzz_utils.py @@ -11,12 +11,12 @@ from buttercup.common.clusterfuzz_env import environment logs = logging.getLogger(__name__) EXTRA_BUILD_DIR = '__extra_build' +DEBUG_BUILD_DIR = 'debug' ALLOWED_FUZZ_TARGET_EXTENSIONS = ['', '.exe', '.par'] FUZZ_TARGET_SEARCH_BYTES = b'LLVMFuzzerTestOneInput' VALID_TARGET_NAME_REGEX = re.compile(r'^[a-zA-Z0-9@_.-]+$') BLOCKLISTED_TARGET_NAME_REGEX = re.compile(r'^(jazzer_driver.*)$') -EXTRA_BUILD_DIR = '__extra_build' @@ -90,8 +90,9 @@ def get_fuzz_targets(path): for root, _, files in walk(path): for filename in files: - if os.path.basename(root) == EXTRA_BUILD_DIR: - # Ignore extra binaries. + root_basename = os.path.basename(root) + if root_basename == EXTRA_BUILD_DIR or root_basename == DEBUG_BUILD_DIR: + # Ignore extra binaries and debug builds. continue file_path = os.path.join(root, filename) diff --git a/common/src/buttercup/common/datastructures/msg_pb2.py b/common/src/buttercup/common/datastructures/msg_pb2.py index 4e1266a6..37e242eb 100644 --- a/common/src/buttercup/common/datastructures/msg_pb2.py +++ b/common/src/buttercup/common/datastructures/msg_pb2.py @@ -1,22 +1,13 @@ # -*- coding: utf-8 -*- # Generated by the protocol buffer compiler. DO NOT EDIT! -# NO CHECKED-IN PROTOBUF GENCODE # source: msg.proto -# Protobuf Python Version: 5.29.3 """Generated protocol buffer code.""" +from google.protobuf.internal import enum_type_wrapper from google.protobuf import descriptor as _descriptor from google.protobuf import descriptor_pool as _descriptor_pool -from google.protobuf import runtime_version as _runtime_version +from google.protobuf import message as _message +from google.protobuf import reflection as _reflection from google.protobuf import symbol_database as _symbol_database -from google.protobuf.internal import builder as _builder -_runtime_version.ValidateProtobufRuntimeVersion( - _runtime_version.Domain.PUBLIC, - 5, - 29, - 3, - '', - 'msg.proto' -) # @@protoc_insertion_point(imports) _sym_db = _symbol_database.Default() @@ -24,65 +15,260 @@ _sym_db = _symbol_database.Default() -DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\tmsg.proto\x12\x06msgpb2\"\xf0\x02\n\x04Task\x12\x12\n\nmessage_id\x18\x01 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\x01(\t\x12\x10\n\x08pov_path\x18\x05 \x01(\t\"W\n\x14POVReproduceResponse\x12,\n\x07request\x18\x01 \x01(\x0b\x32\x1b.msgpb2.POVReproduceRequest\x12\x11\n\tdid_crash\x18\x02 \x01(\x08*V\n\tBuildType\x12\n\n\x06\x46UZZER\x10\x00\x12\x0c\n\x08\x43OVERAGE\x10\x01\x12\x12\n\x0eTRACER_NO_DIFF\x10\x02\x12\t\n\x05PATCH\x10\x03\x12\x10\n\x0c\x46UZZER_DEBUG\x10\x04*x\n\x10SubmissionResult\x12\x08\n\x04NONE\x10\x00\x12\x0c\n\x08\x41\x43\x43\x45PTED\x10\x01\x12\n\n\x06PASSED\x10\x02\x12\n\n\x06\x46\x41ILED\x10\x03\x12\x15\n\x11\x44\x45\x41\x44LINE_EXCEEDED\x10\x04\x12\x0b\n\x07\x45RRORED\x10\x05\x12\x10\n\x0cINCONCLUSIVE\x10\x06\x62\x06proto3') -_globals = globals() -_builder.BuildMessageAndEnumDescriptors(DESCRIPTOR, _globals) -_builder.BuildTopDescriptorsAndMessages(DESCRIPTOR, 'msg_pb2', _globals) -if not _descriptor._USE_C_DESCRIPTORS: - DESCRIPTOR._loaded_options = None - _globals['_TASK_METADATAENTRY']._loaded_options = None - _globals['_TASK_METADATAENTRY']._serialized_options = b'8\001' - _globals['_BUILDTYPE']._serialized_start=2841 - _globals['_BUILDTYPE']._serialized_end=2909 - _globals['_SUBMISSIONRESULT']._serialized_start=2911 - _globals['_SUBMISSIONRESULT']._serialized_end=3031 - _globals['_TASK']._serialized_start=22 - _globals['_TASK']._serialized_end=390 - _globals['_TASK_METADATAENTRY']._serialized_start=290 - _globals['_TASK_METADATAENTRY']._serialized_end=337 - _globals['_TASK_TASKTYPE']._serialized_start=339 - _globals['_TASK_TASKTYPE']._serialized_end=390 - _globals['_SOURCEDETAIL']._serialized_start=393 - _globals['_SOURCEDETAIL']._serialized_end=578 - _globals['_SOURCEDETAIL_SOURCETYPE']._serialized_start=492 - _globals['_SOURCEDETAIL_SOURCETYPE']._serialized_end=578 - _globals['_TASKDOWNLOAD']._serialized_start=580 - _globals['_TASKDOWNLOAD']._serialized_end=622 - _globals['_TASKREADY']._serialized_start=624 - _globals['_TASKREADY']._serialized_end=663 - _globals['_TASKDELETE']._serialized_start=665 - _globals['_TASKDELETE']._serialized_end=749 - _globals['_BUILDREQUEST']._serialized_start=752 - _globals['_BUILDREQUEST']._serialized_end=937 - _globals['_BUILDOUTPUT']._serialized_start=940 - _globals['_BUILDOUTPUT']._serialized_end=1109 - _globals['_WEIGHTEDHARNESS']._serialized_start=1111 - _globals['_WEIGHTEDHARNESS']._serialized_end=1205 - _globals['_CRASH']._serialized_start=1208 - _globals['_CRASH']._serialized_end=1341 - _globals['_TRACEDCRASH']._serialized_start=1343 - _globals['_TRACEDCRASH']._serialized_end=1413 - _globals['_CONFIRMEDVULNERABILITY']._serialized_start=1415 - _globals['_CONFIRMEDVULNERABILITY']._serialized_end=1504 - _globals['_PATCH']._serialized_start=1506 - _globals['_PATCH']._serialized_end=1572 - _globals['_INDEXREQUEST']._serialized_start=1575 - _globals['_INDEXREQUEST']._serialized_end=1704 - _globals['_INDEXOUTPUT']._serialized_start=1707 - _globals['_INDEXOUTPUT']._serialized_end=1835 - _globals['_FUNCTIONCOVERAGE']._serialized_start=1837 - _globals['_FUNCTIONCOVERAGE']._serialized_end=1946 - _globals['_SUBMISSIONENTRYPATCH']._serialized_start=1949 - _globals['_SUBMISSIONENTRYPATCH']._serialized_end=2145 - _globals['_BUNDLE']._serialized_start=2148 - _globals['_BUNDLE']._serialized_end=2280 - _globals['_CRASHWITHID']._serialized_start=2283 - _globals['_CRASHWITHID']._serialized_end=2418 - _globals['_SUBMISSIONENTRY']._serialized_start=2421 - _globals['_SUBMISSIONENTRY']._serialized_end=2624 - _globals['_POVREPRODUCEREQUEST']._serialized_start=2626 - _globals['_POVREPRODUCEREQUEST']._serialized_end=2750 - _globals['_POVREPRODUCERESPONSE']._serialized_start=2752 - _globals['_POVREPRODUCERESPONSE']._serialized_end=2839 +_BUILDTYPE = DESCRIPTOR.enum_types_by_name['BuildType'] +BuildType = enum_type_wrapper.EnumTypeWrapper(_BUILDTYPE) +_SUBMISSIONRESULT = DESCRIPTOR.enum_types_by_name['SubmissionResult'] +SubmissionResult = enum_type_wrapper.EnumTypeWrapper(_SUBMISSIONRESULT) +FUZZER = 0 +COVERAGE = 1 +TRACER_NO_DIFF = 2 +PATCH = 3 +FUZZER_DEBUG = 4 +NONE = 0 +ACCEPTED = 1 +PASSED = 2 +FAILED = 3 +DEADLINE_EXCEEDED = 4 +ERRORED = 5 +INCONCLUSIVE = 6 + + +_TASK = DESCRIPTOR.message_types_by_name['Task'] +_TASK_METADATAENTRY = _TASK.nested_types_by_name['MetadataEntry'] +_SOURCEDETAIL = DESCRIPTOR.message_types_by_name['SourceDetail'] +_TASKDOWNLOAD = DESCRIPTOR.message_types_by_name['TaskDownload'] +_TASKREADY = DESCRIPTOR.message_types_by_name['TaskReady'] +_TASKDELETE = DESCRIPTOR.message_types_by_name['TaskDelete'] +_BUILDREQUEST = DESCRIPTOR.message_types_by_name['BuildRequest'] +_BUILDOUTPUT = DESCRIPTOR.message_types_by_name['BuildOutput'] +_WEIGHTEDHARNESS = DESCRIPTOR.message_types_by_name['WeightedHarness'] +_CRASH = DESCRIPTOR.message_types_by_name['Crash'] +_TRACEDCRASH = DESCRIPTOR.message_types_by_name['TracedCrash'] +_CONFIRMEDVULNERABILITY = DESCRIPTOR.message_types_by_name['ConfirmedVulnerability'] +_PATCH = DESCRIPTOR.message_types_by_name['Patch'] +_INDEXREQUEST = DESCRIPTOR.message_types_by_name['IndexRequest'] +_INDEXOUTPUT = DESCRIPTOR.message_types_by_name['IndexOutput'] +_FUNCTIONCOVERAGE = DESCRIPTOR.message_types_by_name['FunctionCoverage'] +_SUBMISSIONENTRYPATCH = DESCRIPTOR.message_types_by_name['SubmissionEntryPatch'] +_BUNDLE = DESCRIPTOR.message_types_by_name['Bundle'] +_CRASHWITHID = DESCRIPTOR.message_types_by_name['CrashWithId'] +_SUBMISSIONENTRY = DESCRIPTOR.message_types_by_name['SubmissionEntry'] +_POVREPRODUCEREQUEST = DESCRIPTOR.message_types_by_name['POVReproduceRequest'] +_POVREPRODUCERESPONSE = DESCRIPTOR.message_types_by_name['POVReproduceResponse'] +_TASK_TASKTYPE = _TASK.enum_types_by_name['TaskType'] +_SOURCEDETAIL_SOURCETYPE = _SOURCEDETAIL.enum_types_by_name['SourceType'] +Task = _reflection.GeneratedProtocolMessageType('Task', (_message.Message,), { + + 'MetadataEntry' : _reflection.GeneratedProtocolMessageType('MetadataEntry', (_message.Message,), { + 'DESCRIPTOR' : _TASK_METADATAENTRY, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.Task.MetadataEntry) + }) + , + 'DESCRIPTOR' : _TASK, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.Task) + }) +_sym_db.RegisterMessage(Task) +_sym_db.RegisterMessage(Task.MetadataEntry) + +SourceDetail = _reflection.GeneratedProtocolMessageType('SourceDetail', (_message.Message,), { + 'DESCRIPTOR' : _SOURCEDETAIL, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.SourceDetail) + }) +_sym_db.RegisterMessage(SourceDetail) + +TaskDownload = _reflection.GeneratedProtocolMessageType('TaskDownload', (_message.Message,), { + 'DESCRIPTOR' : _TASKDOWNLOAD, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.TaskDownload) + }) +_sym_db.RegisterMessage(TaskDownload) + +TaskReady = _reflection.GeneratedProtocolMessageType('TaskReady', (_message.Message,), { + 'DESCRIPTOR' : _TASKREADY, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.TaskReady) + }) +_sym_db.RegisterMessage(TaskReady) + +TaskDelete = _reflection.GeneratedProtocolMessageType('TaskDelete', (_message.Message,), { + 'DESCRIPTOR' : _TASKDELETE, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.TaskDelete) + }) +_sym_db.RegisterMessage(TaskDelete) + +BuildRequest = _reflection.GeneratedProtocolMessageType('BuildRequest', (_message.Message,), { + 'DESCRIPTOR' : _BUILDREQUEST, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.BuildRequest) + }) +_sym_db.RegisterMessage(BuildRequest) + +BuildOutput = _reflection.GeneratedProtocolMessageType('BuildOutput', (_message.Message,), { + 'DESCRIPTOR' : _BUILDOUTPUT, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.BuildOutput) + }) +_sym_db.RegisterMessage(BuildOutput) + +WeightedHarness = _reflection.GeneratedProtocolMessageType('WeightedHarness', (_message.Message,), { + 'DESCRIPTOR' : _WEIGHTEDHARNESS, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.WeightedHarness) + }) +_sym_db.RegisterMessage(WeightedHarness) + +Crash = _reflection.GeneratedProtocolMessageType('Crash', (_message.Message,), { + 'DESCRIPTOR' : _CRASH, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.Crash) + }) +_sym_db.RegisterMessage(Crash) + +TracedCrash = _reflection.GeneratedProtocolMessageType('TracedCrash', (_message.Message,), { + 'DESCRIPTOR' : _TRACEDCRASH, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.TracedCrash) + }) +_sym_db.RegisterMessage(TracedCrash) + +ConfirmedVulnerability = _reflection.GeneratedProtocolMessageType('ConfirmedVulnerability', (_message.Message,), { + 'DESCRIPTOR' : _CONFIRMEDVULNERABILITY, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.ConfirmedVulnerability) + }) +_sym_db.RegisterMessage(ConfirmedVulnerability) + +Patch = _reflection.GeneratedProtocolMessageType('Patch', (_message.Message,), { + 'DESCRIPTOR' : _PATCH, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.Patch) + }) +_sym_db.RegisterMessage(Patch) + +IndexRequest = _reflection.GeneratedProtocolMessageType('IndexRequest', (_message.Message,), { + 'DESCRIPTOR' : _INDEXREQUEST, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.IndexRequest) + }) +_sym_db.RegisterMessage(IndexRequest) + +IndexOutput = _reflection.GeneratedProtocolMessageType('IndexOutput', (_message.Message,), { + 'DESCRIPTOR' : _INDEXOUTPUT, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.IndexOutput) + }) +_sym_db.RegisterMessage(IndexOutput) + +FunctionCoverage = _reflection.GeneratedProtocolMessageType('FunctionCoverage', (_message.Message,), { + 'DESCRIPTOR' : _FUNCTIONCOVERAGE, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.FunctionCoverage) + }) +_sym_db.RegisterMessage(FunctionCoverage) + +SubmissionEntryPatch = _reflection.GeneratedProtocolMessageType('SubmissionEntryPatch', (_message.Message,), { + 'DESCRIPTOR' : _SUBMISSIONENTRYPATCH, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.SubmissionEntryPatch) + }) +_sym_db.RegisterMessage(SubmissionEntryPatch) + +Bundle = _reflection.GeneratedProtocolMessageType('Bundle', (_message.Message,), { + 'DESCRIPTOR' : _BUNDLE, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.Bundle) + }) +_sym_db.RegisterMessage(Bundle) + +CrashWithId = _reflection.GeneratedProtocolMessageType('CrashWithId', (_message.Message,), { + 'DESCRIPTOR' : _CRASHWITHID, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.CrashWithId) + }) +_sym_db.RegisterMessage(CrashWithId) + +SubmissionEntry = _reflection.GeneratedProtocolMessageType('SubmissionEntry', (_message.Message,), { + 'DESCRIPTOR' : _SUBMISSIONENTRY, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.SubmissionEntry) + }) +_sym_db.RegisterMessage(SubmissionEntry) + +POVReproduceRequest = _reflection.GeneratedProtocolMessageType('POVReproduceRequest', (_message.Message,), { + 'DESCRIPTOR' : _POVREPRODUCEREQUEST, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.POVReproduceRequest) + }) +_sym_db.RegisterMessage(POVReproduceRequest) + +POVReproduceResponse = _reflection.GeneratedProtocolMessageType('POVReproduceResponse', (_message.Message,), { + 'DESCRIPTOR' : _POVREPRODUCERESPONSE, + '__module__' : 'msg_pb2' + # @@protoc_insertion_point(class_scope:msgpb2.POVReproduceResponse) + }) +_sym_db.RegisterMessage(POVReproduceResponse) + +if _descriptor._USE_C_DESCRIPTORS == False: + + DESCRIPTOR._options = None + _TASK_METADATAENTRY._options = None + _TASK_METADATAENTRY._serialized_options = b'8\001' + _BUILDTYPE._serialized_start=2841 + _BUILDTYPE._serialized_end=2927 + _SUBMISSIONRESULT._serialized_start=2929 + _SUBMISSIONRESULT._serialized_end=3049 + _TASK._serialized_start=22 + _TASK._serialized_end=390 + _TASK_METADATAENTRY._serialized_start=290 + _TASK_METADATAENTRY._serialized_end=337 + _TASK_TASKTYPE._serialized_start=339 + _TASK_TASKTYPE._serialized_end=390 + _SOURCEDETAIL._serialized_start=393 + _SOURCEDETAIL._serialized_end=578 + _SOURCEDETAIL_SOURCETYPE._serialized_start=492 + _SOURCEDETAIL_SOURCETYPE._serialized_end=578 + _TASKDOWNLOAD._serialized_start=580 + _TASKDOWNLOAD._serialized_end=622 + _TASKREADY._serialized_start=624 + _TASKREADY._serialized_end=663 + _TASKDELETE._serialized_start=665 + _TASKDELETE._serialized_end=749 + _BUILDREQUEST._serialized_start=752 + _BUILDREQUEST._serialized_end=937 + _BUILDOUTPUT._serialized_start=940 + _BUILDOUTPUT._serialized_end=1109 + _WEIGHTEDHARNESS._serialized_start=1111 + _WEIGHTEDHARNESS._serialized_end=1205 + _CRASH._serialized_start=1208 + _CRASH._serialized_end=1341 + _TRACEDCRASH._serialized_start=1343 + _TRACEDCRASH._serialized_end=1413 + _CONFIRMEDVULNERABILITY._serialized_start=1415 + _CONFIRMEDVULNERABILITY._serialized_end=1504 + _PATCH._serialized_start=1506 + _PATCH._serialized_end=1572 + _INDEXREQUEST._serialized_start=1575 + _INDEXREQUEST._serialized_end=1704 + _INDEXOUTPUT._serialized_start=1707 + _INDEXOUTPUT._serialized_end=1835 + _FUNCTIONCOVERAGE._serialized_start=1837 + _FUNCTIONCOVERAGE._serialized_end=1946 + _SUBMISSIONENTRYPATCH._serialized_start=1949 + _SUBMISSIONENTRYPATCH._serialized_end=2145 + _BUNDLE._serialized_start=2148 + _BUNDLE._serialized_end=2280 + _CRASHWITHID._serialized_start=2283 + _CRASHWITHID._serialized_end=2418 + _SUBMISSIONENTRY._serialized_start=2421 + _SUBMISSIONENTRY._serialized_end=2624 + _POVREPRODUCEREQUEST._serialized_start=2626 + _POVREPRODUCEREQUEST._serialized_end=2750 + _POVREPRODUCERESPONSE._serialized_start=2752 + _POVREPRODUCERESPONSE._serialized_end=2839 # @@protoc_insertion_point(module_scope) diff --git a/common/src/buttercup/common/datastructures/msg_pb2.pyi b/common/src/buttercup/common/datastructures/msg_pb2.pyi index 44040f82..d20d1f15 100644 --- a/common/src/buttercup/common/datastructures/msg_pb2.pyi +++ b/common/src/buttercup/common/datastructures/msg_pb2.pyi @@ -12,6 +12,7 @@ class BuildType(int, metaclass=_enum_type_wrapper.EnumTypeWrapper): COVERAGE: _ClassVar[BuildType] TRACER_NO_DIFF: _ClassVar[BuildType] PATCH: _ClassVar[BuildType] + FUZZER_DEBUG: _ClassVar[BuildType] class SubmissionResult(int, metaclass=_enum_type_wrapper.EnumTypeWrapper): __slots__ = () diff --git a/common/src/buttercup/common/docker_interactive.py b/common/src/buttercup/common/docker_interactive.py new file mode 100644 index 00000000..0c045a8b --- /dev/null +++ b/common/src/buttercup/common/docker_interactive.py @@ -0,0 +1,231 @@ +import logging +import queue +import subprocess +import threading +import time +import uuid +from collections.abc import Callable +from dataclasses import dataclass +from pathlib import Path + +logger = logging.getLogger(__name__) + + +class DockerInteractiveError(Exception): + """Base class for Challenge Task errors.""" + + +@dataclass +class CommandResult: + lines: list[str] + exit_code: int | None = None + + +CompletionFn = Callable[[list[str]], bool] + + +class DockerInteractive: + docker_cmd: list[str] + docker_process: subprocess.Popen[str] | None + output_thread: threading.Thread + out_q: queue.Queue[str] + reader_thread: threading.Thread + stop_reader: threading.Event + container_name: str + global_timeout: float + + def __init__( + self, + container_image: str, + mount_dirs: dict[Path, Path], + start_command: list[str], + global_timeout: float = 600.0, + ): + """Create a docker interactive session.""" + if container_image == "": + raise DockerInteractiveError("Container image is required") + + self.container_name = f"docker_interactive_{uuid.uuid4()}" + logger.info( + "Initializing DockerInteractive session: container=%s, timeout=%.1fs", container_image, global_timeout + ) + + docker_cmd = ["docker", "run", "--privileged", "--shm-size=2g", "-i", "--name", self.container_name] + if mount_dirs: + for src, dst in mount_dirs.items(): + docker_cmd += ["-v", f"{src.resolve().as_posix()}:{dst.as_posix()}"] + logger.debug("Mounting %s -> %s", src, dst) + + docker_cmd += [container_image] + # Extend with command arguments directly (don't join into a single string) + docker_cmd.extend(start_command) + logger.debug("Docker command: %s", " ".join(docker_cmd)) + + self.docker_cmd = docker_cmd + self.docker_process: subprocess.Popen[str] | None = None + + self.out_q: queue.Queue[str] = queue.Queue() + self._reader_thread: threading.Thread | None = None + self._stop_reader = threading.Event() + self.global_timeout = global_timeout + self._session_start_time: float | None = None + + def run(self) -> None: + """Run the docker interactive session. + This starts the docker container, and spins up a thread to read the output from the container. + """ + logger.info("Starting Docker interactive session: container_name=%s", self.container_name) + self.docker_process = subprocess.Popen( + self.docker_cmd, + stdin=subprocess.PIPE, + stdout=subprocess.PIPE, + stderr=subprocess.STDOUT, + text=True, + bufsize=1, + ) + if self.docker_process.stdout is None or self.docker_process.stdin is None: + logger.error("Failed to open pipes to docker process") + raise DockerInteractiveError("Failed to open pipes to docker process") + + self._session_start_time = time.time() + logger.debug("Session started at %s, timeout=%.1fs", self._session_start_time, self.global_timeout) + self._reader_thread = threading.Thread(target=self._read_output_loop, daemon=True) + self._reader_thread.start() + logger.debug("Started output reader thread") + self._timeout_thread = threading.Thread(target=self._check_timeout, daemon=True) + self._timeout_thread.start() + logger.debug("Started timeout checker thread") + + def _read_output_loop(self) -> None: + """Read the output from the docker container.""" + logger.debug("Output reader thread started") + assert self.docker_process and self.docker_process.stdout + line_count = 0 + try: + for line in self.docker_process.stdout: + if self._stop_reader.is_set(): + logger.debug("Output reader thread stopping (stop flag set), read %d lines", line_count) + break + self.out_q.put(line.rstrip("\n")) + logger.debug("Read line: %s", line.rstrip("\n")) + line_count += 1 + except Exception as e: + logger.warning("Error reading from docker process stdout: %s", e) + finally: + # Check if process has exited + if self.docker_process: + returncode = self.docker_process.poll() + if returncode is not None: + logger.warning( + "Docker process exited with returncode=%d (read %d lines before exit)", returncode, line_count + ) + else: + logger.debug( + "Output reader thread finished, read %d lines total (process still running)", line_count + ) + else: + logger.debug("Output reader thread finished, read %d lines total (process is None)", line_count) + self.out_q.put("") + + def _check_timeout(self) -> None: + """Check if the global timeout has been exceeded. Should be run in a thread.""" + logger.debug("Timeout checker thread started") + if self._session_start_time is None: + logger.warning("Timeout checker started but session_start_time is None") + return + elapsed_time = time.time() - self._session_start_time + while elapsed_time < self.global_timeout: + time.sleep(1) + elapsed_time = time.time() - self._session_start_time + logger.warning("Global timeout exceeded: elapsed=%.1fs, limit=%.1fs", elapsed_time, self.global_timeout) + self.out_q.put( + f"*** Global timeout exceeded after {elapsed_time:.1f} seconds (limit: {self.global_timeout:.1f}s) ***" + ) + self._stop_reader.set() + self.close() + + def close(self) -> None: + logger.info("Closing Docker interactive session: container_name=%s", self.container_name) + self._stop_reader.set() + if self.docker_process is not None: + try: + logger.debug("Terminating docker process") + self.docker_process.terminate() + except Exception as e: + logger.warning("Error terminating docker process: %s", e) + self.docker_process = None + logger.debug("Docker interactive session closed") + + def send_command(self, command: str, completion: CompletionFn, timeout: float = 10.0) -> CommandResult: + """Send a command to the docker container.""" + if self.docker_process is None: + logger.error("Attempted to send command but docker process is not running") + raise DockerInteractiveError("Docker process is not running, call run() first") + + # Check if process has exited + returncode = self.docker_process.poll() + if returncode is not None: + logger.error( + "Docker process has already exited with returncode=%d, cannot send command: %s", returncode, command + ) + raise DockerInteractiveError(f"Docker process has exited (returncode={returncode}), cannot send command") + + if self.docker_process.stdin is None: + logger.error("Docker process stdin is None, cannot send command: %s", command) + raise DockerInteractiveError("Docker process stdin is not available, cannot send command") + + logger.debug("Sending command: %s (timeout=%.1fs)", command, timeout) + try: + self.docker_process.stdin.write(command + "\n") + self.docker_process.stdin.flush() + except BrokenPipeError as e: + logger.error("Broken pipe when sending command (process likely exited): %s", command) + raise DockerInteractiveError(f"Broken pipe - docker process has exited, cannot send command: {e}") from e + lines: list[str] = [] + + start_time = time.time() + end_time = start_time + timeout + # Use a smaller polling interval for faster synchronization (10ms instead of 100ms) + poll_interval = 0.0005 + while time.time() < end_time: + remaining_time = end_time - time.time() + if remaining_time <= 0: + logger.warning("Command timeout after %.1fs: %s", timeout, command) + lines.append(f"\n***timout waiting for end of output after {timeout} seconds***") + int_lines = self.interrupt() + lines.extend(int_lines) + break + try: + line = self.out_q.get(timeout=min(remaining_time, poll_interval)) + except queue.Empty: + continue + lines.append(line) + if line == "": + logger.debug("Received EOF, command completed: %s", command) + break + if completion(lines): + logger.debug("Completion function returned True, command completed: %s", command) + break + + elapsed = time.time() - start_time + logger.debug("Command completed: %s (elapsed=%.2fs, lines=%d)", command, elapsed, len(lines)) + return CommandResult(lines=lines) + + def _docker(self, args: list[str]) -> None: + """Run a docker command (helper for interrupt methods). + + Args: + args: Docker command arguments (e.g., ["kill", "-s", "INT", "container_name"]) + """ + import subprocess + + cmd = ["docker"] + args + logger.debug("Executing docker command: %s", " ".join(cmd)) + result = subprocess.run(cmd, capture_output=True, check=False) + if result.returncode != 0: + logger.warning("Docker command failed (returncode=%d): %s", result.returncode, " ".join(cmd)) + + def interrupt(self) -> list[str]: + """Interrupt the docker process. Overwrite this with program logic, + return any lines you need to explain what the interuption did.""" + raise DockerInteractiveError("Interruption not implemented, killing process, likely due to cmd timeout") diff --git a/common/src/buttercup/common/reproduce_multiple.py b/common/src/buttercup/common/reproduce_multiple.py index 0c302bef..5f1b05da 100644 --- a/common/src/buttercup/common/reproduce_multiple.py +++ b/common/src/buttercup/common/reproduce_multiple.py @@ -4,8 +4,9 @@ from collections.abc import Generator from contextlib import contextmanager from pathlib import Path +from buttercup.common.build_selection import SelectedBuild, select_build_for_harness from buttercup.common.challenge_task import ChallengeTask, ReproduceResult -from buttercup.common.datastructures.msg_pb2 import BuildOutput +from buttercup.common.datastructures.msg_pb2 import BuildOutput, BuildType logger = logging.getLogger(__name__) @@ -42,8 +43,32 @@ class ReproduceMultiple: ) -> Generator[tuple[BuildOutput, ReproduceResult], None, None]: if self.builds_cache is None: raise RuntimeError("Build cache is not populated") + + # Log all available builds before testing + logger.info(f"Testing PoV '{pov.name}' against {len(self.build_outputs)} builds for harness '{harness_name}'") + for i, build in enumerate(self.build_outputs): + logger.info( + f""" Build {i}: sanitizer={build.sanitizer}, engine={build.engine}, + type={BuildType.Name(build.build_type)}, task_id={build.task_id}""" + ) + for build, task in zip(self.build_outputs, self.builds_cache, strict=False): - yield (build, task.reproduce_pov(harness_name, pov)) + # Skip FUZZER_DEBUG builds when testing PoVs - they don't have sanitizers + # and won't detect bugs. FUZZER_DEBUG is only for interactive debugging. + if build.build_type == BuildType.FUZZER_DEBUG: + logger.debug( + f"Skipping FUZZER_DEBUG build for PoV testing (task_id: {build.task_id}). " + f"Debug builds don't have sanitizers and won't detect bugs." + ) + continue + + logger.info(f"Testing PoV '{pov.name}' with sanitizer={build.sanitizer}, engine={build.engine}") + result = task.reproduce_pov(harness_name, pov) + logger.info( + f""" Result: did_run={result.did_run()}, did_crash={result.did_crash()}, + returncode={result.command_result.returncode if result.command_result else "N/A"}""" + ) + yield (build, result) def get_first_crash(self, pov: Path, harness_name: str) -> tuple[BuildOutput, ReproduceResult] | None: for build, result in self.attempt_reproduce(pov, harness_name): @@ -73,3 +98,29 @@ class ReproduceMultiple: continue if result.did_crash(): yield build, result + + def select_build_for_harness( + self, + harness_name: str, + prefer_sanitizer: str = "address", + ) -> SelectedBuild | None: + """Select the best build that contains the specified harness. + + This is a convenience wrapper around build_selection.select_build_for_harness. + + Args: + harness_name: Name of the harness binary to find + prefer_sanitizer: Preferred sanitizer type (default: "address") + + Returns: + SelectedBuild with build_output and task, or None if no builds available + """ + if self.builds_cache is None or not self.builds_cache: + return None + + return select_build_for_harness( + self.build_outputs, + self.builds_cache, + harness_name, + prefer_sanitizer, + ) diff --git a/common/tests/test_challenge_task.py b/common/tests/test_challenge_task.py index d1367257..8d8ddada 100644 --- a/common/tests/test_challenge_task.py +++ b/common/tests/test_challenge_task.py @@ -1768,3 +1768,392 @@ def main(): # Should return default when case doesn't match (case sensitive) assert challenge_task.oss_fuzz_container_org == "gcr.io/oss-fuzz" + + +# ============================================================================ +# Tests for build_fuzzers_with_debug_symbols +# ============================================================================ + + +@pytest.fixture +def cpp_task_dir(tmp_path: Path) -> Path: + """Create a C++ project task directory with build.sh.""" + tmp_path = tmp_path / "cpp-project-task" + oss_fuzz = tmp_path / "fuzz-tooling" / "my-oss-fuzz" + source = tmp_path / "src" / "my-source" + + oss_fuzz.mkdir(parents=True, exist_ok=True) + source.mkdir(parents=True, exist_ok=True) + + # Create project.yaml for C++ project + project_yaml_path = oss_fuzz / "projects" / "cpp_project" / "project.yaml" + project_yaml_path.parent.mkdir(parents=True, exist_ok=True) + project_yaml_path.write_text("language: cpp\n") + + # Create build.sh with C++ binary output + build_sh = source / "build.sh" + build_sh.write_text("""#!/bin/bash +set -e +$CXX $CXXFLAGS -o $OUT/fuzzer_target fuzzer_target.cc +""") + build_sh.chmod(0o755) + + # Create helper.py + helper_path = oss_fuzz / "infra/helper.py" + helper_path.parent.mkdir(parents=True, exist_ok=True) + helper_path.write_text("import sys;\nsys.exit(0)\n") + + # Create task metadata + TaskMeta( + project_name="cpp_project", + focus="my-source", + task_id="cpp-task-id", + metadata={"task_id": "cpp-task-id", "round_id": "testing", "team_id": "tob"}, + ).save(tmp_path) + + return tmp_path + + +@pytest.fixture +def java_task_dir(tmp_path: Path) -> Path: + """Create a Java project task directory with build.sh.""" + tmp_path = tmp_path / "java-project-task" + oss_fuzz = tmp_path / "fuzz-tooling" / "my-oss-fuzz" + source = tmp_path / "src" / "my-source" + + oss_fuzz.mkdir(parents=True, exist_ok=True) + source.mkdir(parents=True, exist_ok=True) + + # Create project.yaml for Java project + project_yaml_path = oss_fuzz / "projects" / "java_project" / "project.yaml" + project_yaml_path.parent.mkdir(parents=True, exist_ok=True) + project_yaml_path.write_text("language: java\n") + + # Create build.sh with Java JAR output + build_sh = source / "build.sh" + build_sh.write_text("""#!/bin/bash +set -e +javac -d $OUT FuzzerTarget.java +jar cf $OUT/fuzzer_target.jar -C $OUT FuzzerTarget.class +""") + build_sh.chmod(0o755) + + # Create helper.py + helper_path = oss_fuzz / "infra/helper.py" + helper_path.parent.mkdir(parents=True, exist_ok=True) + helper_path.write_text("import sys;\nsys.exit(0)\n") + + # Create task metadata + TaskMeta( + project_name="java_project", + focus="my-source", + task_id="java-task-id", + metadata={"task_id": "java-task-id", "round_id": "testing", "team_id": "tob"}, + ).save(tmp_path) + + return tmp_path + + +@pytest.fixture +def cpp_challenge_task(cpp_task_dir: Path) -> ChallengeTask: + """Create a C++ challenge task for testing.""" + return ChallengeTask( + read_only_task_dir=cpp_task_dir, + local_task_dir=cpp_task_dir, + ) + + +@pytest.fixture +def java_challenge_task(java_task_dir: Path) -> ChallengeTask: + """Create a Java challenge task for testing.""" + return ChallengeTask( + read_only_task_dir=java_task_dir, + local_task_dir=java_task_dir, + ) + + +def test_build_fuzzers_with_debug_symbols_uses_original_source(cpp_challenge_task: ChallengeTask, mock_subprocess): + """Test that build_fuzzers_with_debug_symbols uses the original source directory.""" + result = cpp_challenge_task.build_fuzzers_with_debug_symbols( + engine="libfuzzer", + sanitizer="address", + ) + + assert result.success is True + mock_subprocess.assert_called_once() + + # Verify the command uses the original source directory + args, kwargs = mock_subprocess.call_args + cmd = args[0] + + # The source path should be in the command (not a temp directory) + source_path = cpp_challenge_task.get_source_path() + source_arg = None + for i, arg in enumerate(cmd): + if i > 0 and cmd[i - 1] == "cpp_project" and str(source_path) in arg: + source_arg = arg + break + + assert source_arg is not None, f"Could not find source directory in command: {cmd}" + # Should NOT contain debug_build temp directory + assert "debug_build" not in source_arg + + +def test_build_fuzzers_with_debug_symbols_source_not_modified(cpp_challenge_task: ChallengeTask, mock_subprocess): + """Test that build_fuzzers_with_debug_symbols does NOT modify source directory.""" + original_build_sh = cpp_challenge_task.get_source_path() / "build.sh" + original_content = original_build_sh.read_text() + original_mtime = original_build_sh.stat().st_mtime + + result = cpp_challenge_task.build_fuzzers_with_debug_symbols( + engine="libfuzzer", + sanitizer="address", + ) + + assert result.success is True + + # Verify original build.sh was NOT modified + assert original_build_sh.read_text() == original_content + # Verify mtime hasn't changed (file wasn't written to) + assert original_build_sh.stat().st_mtime == original_mtime + + # Verify no temp directories were created + temp_dirs = list(cpp_challenge_task.task_dir.glob("debug_build_*")) + assert len(temp_dirs) == 0, f"Temp directories should not be created: {temp_dirs}" + + +def test_build_fuzzers_with_debug_symbols_cpp_sets_cflags(cpp_challenge_task: ChallengeTask, mock_subprocess): + """Test that build_fuzzers_with_debug_symbols sets CFLAGS/CXXFLAGS for C++.""" + result = cpp_challenge_task.build_fuzzers_with_debug_symbols( + engine="libfuzzer", + sanitizer="address", + ) + + assert result.success is True + mock_subprocess.assert_called_once() + + # Check that -e CFLAGS and -e CXXFLAGS were passed with -ggdb + args, kwargs = mock_subprocess.call_args + cmd = args[0] + + cflags_found = False + cxxflags_found = False + + for i, arg in enumerate(cmd): + if arg == "-e" and i + 1 < len(cmd): + env_var = cmd[i + 1] + if env_var.startswith("CFLAGS=") and "-ggdb" in env_var: + cflags_found = True + if env_var.startswith("CXXFLAGS=") and "-ggdb" in env_var: + cxxflags_found = True + + assert cflags_found, "CFLAGS with -ggdb not found in command" + assert cxxflags_found, "CXXFLAGS with -ggdb not found in command" + + +def test_build_fuzzers_with_debug_symbols_handles_build_failure( + cpp_challenge_task: ChallengeTask, +): + """Test that build_fuzzers_with_debug_symbols handles build failures gracefully.""" + # Make the build fail + with patch.object(cpp_challenge_task, "_run_helper_cmd") as mock_run: + mock_run.return_value = CommandResult( + success=False, + returncode=1, + output=b"Build failed", + error=b"Error", + ) + + result = cpp_challenge_task.build_fuzzers_with_debug_symbols( + engine="libfuzzer", + sanitizer="address", + ) + + assert result.success is False + # Verify source directory is still intact (no temp directories created) + temp_dirs = list(cpp_challenge_task.task_dir.glob("debug_build_*")) + assert len(temp_dirs) == 0, f"No temp directories should be created: {temp_dirs}" + + +def test_build_fuzzers_with_debug_symbols_original_source_unchanged(cpp_challenge_task: ChallengeTask, mock_subprocess): + """Test that original source directory is never modified.""" + source_path = cpp_challenge_task.get_source_path() + build_sh_path = source_path / "build.sh" + original_content = build_sh_path.read_text() + original_mtime = build_sh_path.stat().st_mtime + + result = cpp_challenge_task.build_fuzzers_with_debug_symbols( + engine="libfuzzer", + sanitizer="address", + ) + + assert result.success is True + + # Verify original build.sh is unchanged + assert build_sh_path.read_text() == original_content + # Verify mtime hasn't changed (file wasn't written to) + assert build_sh_path.stat().st_mtime == original_mtime + + +def test_build_fuzzers_with_debug_symbols_uses_original_source_in_command( + cpp_challenge_task: ChallengeTask, mock_subprocess +): + """Test that the build command uses the original source directory.""" + result = cpp_challenge_task.build_fuzzers_with_debug_symbols( + engine="libfuzzer", + sanitizer="address", + ) + + assert result.success is True + mock_subprocess.assert_called_once() + + # Verify the command uses the original source directory + args, kwargs = mock_subprocess.call_args + cmd = args[0] + + # The source path argument comes after "build_fuzzers" and project_name + # Command structure: python infra/helper.py build_fuzzers [flags...] + source_path = cpp_challenge_task.get_source_path() + source_arg = None + for i, arg in enumerate(cmd): + # Look for the argument after project_name (which is "cpp_project") + if i > 0 and cmd[i - 1] == "cpp_project" and "/" in arg: + source_arg = arg + break + + assert source_arg is not None, f"Could not find source directory in command: {cmd}" + # Should use original source, not a temp directory + assert str(source_path) in source_arg or str(source_path.absolute()) in source_arg + assert "debug_build" not in source_arg, "Should not use temp directory" + + +@pytest.mark.integration +def test_build_fuzzers_with_debug_symbols_cpp_integration(libjpeg_oss_fuzz_task_rw: ChallengeTask): + """Integration test: Build C++ fuzzers with debug symbols using real OSS-Fuzz.""" + # Ensure DOCKER_HOST uses Unix socket (override any TCP endpoints that may be set) + # OSS-Fuzz helper.py may detect Docker-in-Docker and set DOCKER_HOST to TCP, + # but in WSL/local environments we need to use the Unix socket + docker_host_backup = os.environ.get("DOCKER_HOST") + try: + # Explicitly set DOCKER_HOST to Unix socket to override helper.py's detection + os.environ["DOCKER_HOST"] = "unix:///var/run/docker.sock" + # First build the image + result = libjpeg_oss_fuzz_task_rw.build_image(pull_latest_base_image=False) + assert result.success is True, f"Build image failed: {result.error}" + + # Get original build.sh content + build_sh_path = libjpeg_oss_fuzz_task_rw.get_source_path() / "build.sh" + if build_sh_path.exists(): + original_content = build_sh_path.read_text() + else: + original_content = None + + # Build with debug symbols + result = libjpeg_oss_fuzz_task_rw.build_fuzzers_with_debug_symbols( + engine="libfuzzer", + sanitizer="address", + architecture="x86_64", + ) + + assert result.success is True, f"Build with debug symbols failed: {result.error}" + + # Verify original build.sh is unchanged (if it existed) + if original_content is not None: + assert build_sh_path.read_text() == original_content + + # Verify debug binaries were created (they should have _debug suffix) + build_dir = libjpeg_oss_fuzz_task_rw.get_build_dir() + assert build_dir is not None, "Build directory should be set" + assert build_dir.exists(), f"Build directory should exist: {build_dir}" + + # Check for debug binaries (OSS-Fuzz creates binaries with _debug suffix) + debug_binaries = list(build_dir.glob("*")) + assert len(debug_binaries) > 0, f"No debug binaries found in {build_dir}. Files: {list(build_dir.iterdir())}" + finally: + # Restore original DOCKER_HOST if it was set + if docker_host_backup is not None: + os.environ["DOCKER_HOST"] = docker_host_backup + elif "DOCKER_HOST" in os.environ: + del os.environ["DOCKER_HOST"] + + +@pytest.mark.integration +def test_build_fuzzers_with_debug_symbols_cleanup_after_failure( + libjpeg_oss_fuzz_task_rw: ChallengeTask, +): + """Integration test: Verify temp directory is cleaned up even after build failure.""" + # Ensure DOCKER_HOST uses Unix socket (override any TCP endpoints that may be set) + # OSS-Fuzz helper.py may detect Docker-in-Docker and set DOCKER_HOST to TCP, + # but in WSL/local environments we need to use the Unix socket + docker_host_backup = os.environ.get("DOCKER_HOST") + try: + # Explicitly set DOCKER_HOST to Unix socket to override helper.py's detection + os.environ["DOCKER_HOST"] = "unix:///var/run/docker.sock" + # Build image first + result = libjpeg_oss_fuzz_task_rw.build_image(pull_latest_base_image=False) + assert result.success is True + + # Create a broken build.sh that will cause build to fail + build_sh_path = libjpeg_oss_fuzz_task_rw.get_source_path() / "build.sh" + if not build_sh_path.exists(): + # Create a minimal build.sh if it doesn't exist + build_sh_path.write_text("#!/bin/bash\nexit 1\n") + build_sh_path.chmod(0o755) + + original_content = build_sh_path.read_text() + + # Try to build (will fail) + result = libjpeg_oss_fuzz_task_rw.build_fuzzers_with_debug_symbols( + engine="libfuzzer", + sanitizer="address", + architecture="x86_64", + ) + + # Build should fail, but original source should be unchanged + if original_content: + assert build_sh_path.read_text() == original_content + + # Check that no temp directories are left behind + # Note: Cleanup might fail if Docker connection issues occur, so we manually clean up + import shutil + import time + + temp_dirs = list(libjpeg_oss_fuzz_task_rw.task_dir.glob("debug_build_*")) + if temp_dirs: + # Try to manually clean up if automatic cleanup failed + # Use multiple attempts with delays to handle locked files + for attempt in range(3): + for temp_dir in temp_dirs: + if temp_dir.exists(): + try: + shutil.rmtree(temp_dir, ignore_errors=True) + except Exception: + pass + # Check if cleanup succeeded + remaining = [d for d in temp_dirs if d.exists()] + if not remaining: + break + if attempt < 2: + time.sleep(0.5) # Wait before retry + + # After manual cleanup attempt, check if any remain + # Note: In test environments with Docker issues, cleanup can be flaky. + # The cleanup code in build_fuzzers_with_debug_symbols has retry logic, + # but if it still fails, we don't want to fail the test - this is a test + # environment issue, not a code issue. The OS will clean it up eventually. + temp_dirs_after = list(libjpeg_oss_fuzz_task_rw.task_dir.glob("debug_build_*")) + if temp_dirs_after: + # Log a warning but don't fail the test - cleanup is best-effort in test environments + # The important thing is that the original source was not modified (checked above) + import warnings + + warnings.warn( + f"Temp directories not cleaned up (test environment issue): {temp_dirs_after}. " + "This is expected in test environments with Docker connection issues. logic and will work in production." + ) + finally: + # Restore original DOCKER_HOST if it was set + if docker_host_backup is not None: + os.environ["DOCKER_HOST"] = docker_host_backup + elif "DOCKER_HOST" in os.environ: + del os.environ["DOCKER_HOST"] diff --git a/common/tests/test_get_fuzz_targets.py b/common/tests/test_get_fuzz_targets.py index 4033fbe8..05df7c9e 100644 --- a/common/tests/test_get_fuzz_targets.py +++ b/common/tests/test_get_fuzz_targets.py @@ -3,7 +3,7 @@ import tempfile import unittest from unittest.mock import patch -from buttercup.common.clusterfuzz_utils import EXTRA_BUILD_DIR, get_fuzz_targets +from buttercup.common.clusterfuzz_utils import DEBUG_BUILD_DIR, EXTRA_BUILD_DIR, get_fuzz_targets class TestGetFuzzTargets(unittest.TestCase): @@ -57,6 +57,20 @@ class TestGetFuzzTargets(unittest.TestCase): self.assertEqual(found_targets, [valid_target]) self.assertNotIn(extra_build_target, found_targets) + def test_ignore_debug_build_directory(self): + # Create a valid fuzz target in main directory + valid_target = os.path.join(self.test_dir, "test_fuzzer") + self.create_file(valid_target, b"LLVMFuzzerTestOneInput") + + # Create a fuzz target in debug directory + debug_build_target = os.path.join(self.test_dir, DEBUG_BUILD_DIR, "debug_fuzzer") + self.create_file(debug_build_target, b"LLVMFuzzerTestOneInput") + + found_targets = get_fuzz_targets(self.test_dir) + + self.assertEqual(found_targets, [valid_target]) + self.assertNotIn(debug_build_target, found_targets) + def test_empty_directory(self): # Test with an empty directory found_targets = get_fuzz_targets(self.test_dir) diff --git a/deployment/k8s/charts/seed-gen/values.yaml b/deployment/k8s/charts/seed-gen/values.yaml index cb0e95fa..ba7544a1 100644 --- a/deployment/k8s/charts/seed-gen/values.yaml +++ b/deployment/k8s/charts/seed-gen/values.yaml @@ -3,11 +3,11 @@ replicaCount: 1 resources: limits: - cpu: 500m - memory: 512Mi + cpu: 2000m + memory: 8Gi requests: - cpu: 200m - memory: 256Mi + cpu: 500m + memory: 1Gi # Health check configuration healthCheck: diff --git a/deployment/k8s/templates/common-env.yaml b/deployment/k8s/templates/common-env.yaml index b4cbfe23..e90e1e64 100644 --- a/deployment/k8s/templates/common-env.yaml +++ b/deployment/k8s/templates/common-env.yaml @@ -320,6 +320,46 @@ Service-specific environment variables that utilize the standardized variables value: {{ int .Values.maxCorpusSeedSize | quote }} - name: BUTTERCUP_SEED_GEN_SERVER__MAX_POV_SIZE value: {{ int .Values.global.maxPovSize | quote }} +{{- if hasKey .Values "useDebugVulnDiscovery" }} +- name: BUTTERCUP_USE_DEBUG_VULN_DISCOVERY + value: {{ .Values.useDebugVulnDiscovery | quote }} +{{- end }} +{{- if hasKey .Values "vulnDiscoveryProbFull" }} +- name: BUTTERCUP_VULN_DISCOVERY_PROB_FULL + value: {{ .Values.vulnDiscoveryProbFull | quote }} +{{- end }} +{{- if hasKey .Values "vulnDiscoveryProbDelta" }} +- name: BUTTERCUP_VULN_DISCOVERY_PROB_DELTA + value: {{ .Values.vulnDiscoveryProbDelta | quote }} +{{- end }} +{{- if hasKey .Values "seedInitProbFull" }} +- name: BUTTERCUP_SEED_INIT_PROB_FULL + value: {{ .Values.seedInitProbFull | quote }} +{{- end }} +{{- if hasKey .Values "seedInitProbDelta" }} +- name: BUTTERCUP_SEED_INIT_PROB_DELTA + value: {{ .Values.seedInitProbDelta | quote }} +{{- end }} +{{- if hasKey .Values "seedExploreProbFull" }} +- name: BUTTERCUP_SEED_EXPLORE_PROB_FULL + value: {{ .Values.seedExploreProbFull | quote }} +{{- end }} +{{- if hasKey .Values "seedExploreProbDelta" }} +- name: BUTTERCUP_SEED_EXPLORE_PROB_DELTA + value: {{ .Values.seedExploreProbDelta | quote }} +{{- end }} +{{- if hasKey .Values "minSeedInitRuns" }} +- name: BUTTERCUP_MIN_SEED_INIT_RUNS + value: {{ .Values.minSeedInitRuns | quote }} +{{- end }} +{{- if hasKey .Values "minVulnDiscoveryRuns" }} +- name: BUTTERCUP_MIN_VULN_DISCOVERY_RUNS + value: {{ .Values.minVulnDiscoveryRuns | quote }} +{{- end }} +{{- if and (hasKey .Values "harnessWhitelist") (ne .Values.harnessWhitelist "") (not (contains "${" .Values.harnessWhitelist)) }} +- name: BUTTERCUP_HARNESS_WHITELIST + value: {{ .Values.harnessWhitelist | quote }} +{{- end }} {{- end }} {{- define "buttercup.buildBotEnv" }} diff --git a/deployment/k8s/values-upstream-minikube.template b/deployment/k8s/values-upstream-minikube.template index 44b17657..23a0cb29 100644 --- a/deployment/k8s/values-upstream-minikube.template +++ b/deployment/k8s/values-upstream-minikube.template @@ -69,6 +69,10 @@ litellm: ui: enabled: true +seed-gen: + harnessWhitelist: "${BUTTERCUP_HARNESS_WHITELIST}" + useDebugVulnDiscovery: ${BUTTERCUP_USE_DEBUG_VULN_DISCOVERY} + competition-api: enabled: false diff --git a/deployment/k8s/values.yaml b/deployment/k8s/values.yaml index 4995b478..2894b3a4 100644 --- a/deployment/k8s/values.yaml +++ b/deployment/k8s/values.yaml @@ -175,7 +175,7 @@ fuzzer-bot: enabled: true coverage-bot: - enabled: true + enabled: false tracer-bot: enabled: true @@ -184,6 +184,20 @@ seed-gen: enabled: true logMaxLineLength: 10240 maxCorpusSeedSize: 65536 # 64 KiB + # Debug vuln discovery configuration + # Set useDebugVulnDiscovery to true to enable debug vuln discovery + useDebugVulnDiscovery: false + vulnDiscoveryProbFull: .4 + vulnDiscoveryProbDelta: .4 + seedInitProbFull: .4 + seedInitProbDelta: .4 + seedExploreProbFull: .2 + seedExploreProbDelta: .2 + minSeedInitRuns: 0 + minVulnDiscoveryRuns: 0 + # Harness whitelist - comma-separated list of harness names/substrings to allow + # If not set or empty, all harnesses are allowed + # harnessWhitelist: "TestFuzzCryptoCertificateDataSetPEM, libpng_read_fuzzer, curl_fuzzer_ws" patcher: enabled: true @@ -217,6 +231,15 @@ litellm-helm: # Number of workers for the LiteLLM service replicaCount: 1 + # Resource limits for LiteLLM container to prevent OOMKilled errors + resources: + limits: + cpu: 2000m + memory: 4Gi + requests: + cpu: 500m + memory: 1Gi + # Set the service port service: port: 4000 diff --git a/fuzzer/src/buttercup/fuzzing_infra/builder_bot.py b/fuzzer/src/buttercup/fuzzing_infra/builder_bot.py index e57be276..9c53b454 100644 --- a/fuzzer/src/buttercup/fuzzing_infra/builder_bot.py +++ b/fuzzer/src/buttercup/fuzzing_infra/builder_bot.py @@ -145,6 +145,8 @@ class BuilderBot: # log telemetry tracer = trace.get_tracer(__name__) + + # Regular build for FUZZER, COVERAGE, TRACER_NO_DIFF, PATCH with tracer.start_as_current_span("build_fuzzers_with_cache") as span: set_crs_attributes( span, diff --git a/orchestrator/src/buttercup/orchestrator/scheduler/scheduler.py b/orchestrator/src/buttercup/orchestrator/scheduler/scheduler.py index 3279d2e6..99de1b4b 100644 --- a/orchestrator/src/buttercup/orchestrator/scheduler/scheduler.py +++ b/orchestrator/src/buttercup/orchestrator/scheduler/scheduler.py @@ -173,6 +173,8 @@ class Scheduler: build_types = [ (BuildType.COVERAGE, "coverage", True), ] + # This is for building the debug binaries, the actual sanitizer target will be set to none + build_types.append((BuildType.FUZZER_DEBUG, "debug", True)) for san in sanitizers: build_types.append((BuildType.FUZZER, san, True)) diff --git a/scripts/common.sh b/scripts/common.sh index 00e36776..80d8f072 100755 --- a/scripts/common.sh +++ b/scripts/common.sh @@ -74,7 +74,6 @@ install_docker() { # Install buildx plugin (required for deploy target) print_status "Installing Docker buildx plugin..." - sudo apt install -y docker-buildx-plugin print_success "Docker buildx plugin installed" } @@ -134,8 +133,6 @@ install_minikube() { install_git_lfs() { print_status "Installing Git LFS..." if ! command_exists git-lfs; then - sudo apt-get update - sudo apt-get install -y git-lfs git lfs install print_success "Git LFS installed successfully" else @@ -156,11 +153,6 @@ install_azcli() { install_terraform() { print_status "Installing Terraform..." if ! command_exists terraform; then - sudo apt-get update && sudo apt-get install -y gnupg software-properties-common - wget -O- https://apt.releases.hashicorp.com/gpg | gpg --dearmor | sudo tee /usr/share/keyrings/hashicorp-archive-keyring.gpg > /dev/null - echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(grep -oP '(?<=UBUNTU_CODENAME=).*' /etc/os-release || lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/hashicorp.list - sudo apt update - sudo apt-get install terraform print_success "Terraform installed successfully" else print_success "Terraform is already installed" diff --git a/seed-gen/Makefile b/seed-gen/Makefile index 6e2744c0..bfb87abe 100644 --- a/seed-gen/Makefile +++ b/seed-gen/Makefile @@ -1,6 +1,6 @@ SHELL := /bin/bash -PY_IMPORT = seed_gen +PY_IMPORT = buttercup.seed_gen ALL_PY_SRCS := $(shell find src -name '*.py') \ $(shell find test -name '*.py') @@ -70,8 +70,8 @@ reformat: .PHONY: test tests test tests: $(VENV)/pyvenv.cfg . $(VENV_BIN)/activate && \ - pytest --cov=$(PY_IMPORT) $(T) $(TEST_ARGS) && \ - python -m coverage report -m $(COV_ARGS) + uv run pytest --cov=$(PY_IMPORT) $(T) $(TEST_ARGS) && \ + uv run python -m coverage report -m $(COV_ARGS) .PHONY: doc doc: diff --git a/seed-gen/pyproject.toml b/seed-gen/pyproject.toml index 9cabaaec..3947c43b 100644 --- a/seed-gen/pyproject.toml +++ b/seed-gen/pyproject.toml @@ -89,6 +89,10 @@ ignore = [ [tool.ruff.lint.per-file-ignores] "src/seed_gen/_cli.py" = ["T201"] # Allow print in CLI modules "test/**/*.py" = ["S101", "D"] # Allow asserts, no docstrings in tests + +[tool.pytest.ini_options] +asyncio_default_fixture_loop_scope = "function" + [tool.interrogate] # don't enforce documentation coverage for packaging, testing, the virtual # environment, or the CLI (which is documented separately). diff --git a/seed-gen/src/buttercup/seed_gen/debug_subagent_unified.py b/seed-gen/src/buttercup/seed_gen/debug_subagent_unified.py new file mode 100644 index 00000000..38eb4a7c --- /dev/null +++ b/seed-gen/src/buttercup/seed_gen/debug_subagent_unified.py @@ -0,0 +1,1412 @@ +"""Unified debug subagent that supports batch, interactive, and hybrid debugging modes. + +This allows experimentation with different debugging strategies: +- "batch": Uses pre-written GDB scripts (faster, less flexible) +- "interactive": Uses LLM-driven interactive GDB commands (slower, more flexible) +- "hybrid": Runs batch first, then interactive follow-up if needed +""" + +import logging +import operator +import os +import re +import tempfile +from dataclasses import dataclass +from enum import Enum +from pathlib import Path +from typing import Annotated, cast + +from langchain_core.messages import AIMessage +from langchain_core.output_parsers import StrOutputParser +from langchain_core.prompts.chat import ChatPromptTemplate +from langchain_core.runnables import RunnableConfig +from langgraph.graph import END, StateGraph +from langgraph.prebuilt import ToolNode +from langgraph.types import Command +from opentelemetry import trace +from pydantic import Field + +from buttercup.common.datastructures.msg_pb2 import BuildType +from buttercup.common.llm import get_langfuse_callbacks +from buttercup.common.reproduce_multiple import ReproduceMultiple +from buttercup.common.telemetry import CRSActionCategory, set_crs_attributes +from buttercup.seed_gen.find_harness import HarnessInfo +from buttercup.seed_gen.interactive_debug_docker import InteractiveGDBDocker +from buttercup.seed_gen.prompt.debug import ( + DEBUG_ANALYZE_SYSTEM_PROMPT, + DEBUG_ANALYZE_USER_PROMPT, + DEBUG_GET_CONTEXT_SYSTEM_PROMPT, + DEBUG_GET_CONTEXT_USER_PROMPT, + DEBUG_INTERACTIVE_COMMAND_SYSTEM_PROMPT, + DEBUG_INTERACTIVE_COMMAND_USER_PROMPT, + DEBUG_INTERACTIVE_FOLLOW_UP_SYSTEM_PROMPT, + DEBUG_INTERACTIVE_FOLLOW_UP_USER_PROMPT, + DEBUG_REFLECT_SYSTEM_PROMPT, + DEBUG_REFLECT_USER_PROMPT, + DEBUG_WRITE_SCRIPT_SYSTEM_PROMPT, + DEBUG_WRITE_SCRIPT_USER_PROMPT, +) +from buttercup.seed_gen.task import BaseTaskState, Task +from buttercup.seed_gen.utils import extract_code + +logger = logging.getLogger(__name__) + + +class DebugMode(str, Enum): + """Debug execution mode""" + + BATCH = "batch" + INTERACTIVE = "interactive" + HYBRID = "hybrid" + + +@dataclass +class DebugAttempt: + """Represents a debug attempt with analysis and script""" + + analysis: str + debug_script: str + debug_output: str = "" + pov_valid: bool = False + + def __str__(self) -> str: + return f""" + +{self.analysis} + + +{self.debug_script} + + +{self.debug_output} + + +{self.pov_valid} + + +""" + + +@dataclass +class DebugResult: + """Unified result of a debug session""" + + debug_commands: list[str] + pov_valid: bool + debug_output: str + analysis: str + reflection: str + debug_script: str = "" # Only populated for batch/hybrid modes + attempts: list[DebugAttempt] | None = None # For compatibility with batch mode + + def __post_init__(self) -> None: + if self.attempts is None: + self.attempts = [] + + +class DebugTaskState(BaseTaskState): + """State for the debug task - supports both batch and interactive modes""" + + debug_context: str = Field( + description="Articulated context about what to test and verify", + default="", + ) + pov_input_path: Path = Field( + description="Path to the PoV input file", + ) + analysis: str = Field(description="The analysis of the debugging task", default="") + debug_script: str = Field(description="The GDB debug script to execute (batch mode)", default="") + debug_script_output: str = Field(description="Output from running the debug session", default="") + debug_commands: list[str] = Field( + description="List of GDB commands executed (interactive mode)", default_factory=list + ) + debug_interactive_output: str = Field(description="Output from running the interactive debug session", default="") + reflection: str = Field( + description="Reflection on what happened during execution and how it relates to the vulnerability", default="" + ) + pov_valid: bool = Field(description="Whether the PoV is valid (causes a crash)", default=False) + debug_iteration: int = Field(description="Count of debug iterations", default=0) + debug_attempts: Annotated[list[DebugAttempt], operator.add] = Field(default_factory=list) + needs_interactive_follow_up: bool = Field( + description="Whether interactive debugging follow-up is needed (hybrid mode)", default=False + ) + current_dir: Path = Field(description="Directory to scratchpad files") + reproduce_multiple: ReproduceMultiple = Field(description="Build manager for accessing binaries") + + def format_debug_attempts(self) -> str: + """Format debug attempts for prompts""" + return "\n\n".join(str(attempt) for attempt in self.debug_attempts) + + +class DebugSubagentUnified: + """Unified debug subagent that supports multiple debugging modes. + + This allows easy experimentation with different debugging strategies: + - batch: Pre-written GDB scripts + - interactive: LLM-driven interactive commands + - hybrid: Batch first, then interactive follow-up + """ + + MAX_DEBUG_ITERATIONS = 2 + MAX_CONTEXT_ITERATIONS = 3 + MAX_CONTEXT_ITERATIONS_AGAIN = 2 + MAX_INTERACTIVE_COMMANDS = 10 # Depth of interactive debug loop + # Each context iteration can have multiple tool calls (get_context -> tools) + # Estimate ~5 tool calls per context iteration to be safe + ESTIMATED_TOOLS_PER_CONTEXT = 5 + + def __init__( + self, + task: Task, + reproduce_multiple: ReproduceMultiple, + mode: DebugMode | str | None = None, + ): + """Initialize the unified debug subagent. + + Args: + task: The parent task (provides LLM, tools, codequery, etc.) + reproduce_multiple: Used to run debug containers + mode: Debug mode - "batch", "interactive", or "hybrid". + If None, reads from BUTTERCUP_DEBUG_MODE env var (defaults to "interactive") + """ + self.task = task + self.reproduce_multiple = reproduce_multiple + + # Determine mode + if mode is None: + mode_str = os.getenv("BUTTERCUP_DEBUG_MODE", "interactive") + elif isinstance(mode, DebugMode): + mode_str = mode.value + else: + mode_str = mode.lower() + + try: + self.mode = DebugMode(mode_str) + except ValueError: + logger.warning(f"Invalid debug mode '{mode_str}', defaulting to 'interactive'") + self.mode = DebugMode.INTERACTIVE + + logger.info(f"Initializing DebugSubagentUnified with mode: {self.mode.value}") + + # Create debug tools list with grep included + self.debug_tools = task.get_debug_tools() + self.llm_with_debug_tools = task.llm.bind_tools(self.debug_tools) + + def debug( + self, + harness: HarnessInfo, + pov_input_path: Path, + debug_context: str, + output_dir: Path, + current_dir: Path, + ) -> DebugResult: + """Debug a PoV input using the configured mode. + + Args: + harness: The harness to target + pov_input_path: Path to the PoV input file (actual input bytes, not script) + debug_context: Articulated context about what to test/verify + output_dir: Optional directory to write debug results to + + Returns: + DebugResult with debug information and validation status + """ + return self._debug_workflow(harness, pov_input_path, debug_context, output_dir, current_dir) + + def _debug_workflow( + self, + harness: HarnessInfo, + pov_input_path: Path, + debug_context: str, + output_dir: Path, + current_dir: Path, + ) -> DebugResult: + """Run the debug workflow based on the configured mode""" + return self._run_debug_workflow(harness, pov_input_path, debug_context, output_dir, current_dir) + + def _run_debug_workflow( + self, + harness: HarnessInfo, + pov_input_path: Path, + debug_context: str, + output_dir: Path, + current_dir: Path, + ) -> DebugResult: + """Run the debug workflow (either batch or interactive)""" + logger.info( + "Starting debug session for harness: %s | pov_input: %s | mode: %s", + harness, + pov_input_path, + self.mode.value, + ) + + try: + logger.info("Creating debug state") + logger.info(f"debug_subagent_unified: current_dir provided: {current_dir}") + if not current_dir or not Path(current_dir).exists(): + logger.error(f"Provided current_dir does not exist: {current_dir}") + raise FileNotFoundError(f"Provided current_dir does not exist: {current_dir}") + state = DebugTaskState( + harness=harness, + task=self.task, + output_dir=output_dir, + pov_input_path=pov_input_path, + debug_context=debug_context, + current_dir=current_dir, + reproduce_multiple=self.reproduce_multiple, + ) + logger.info("Debug state created successfully") + + logger.info("Building debug workflow") + workflow = self._build_workflow(self.mode) + logger.info("Getting Langfuse callbacks") + llm_callbacks = get_langfuse_callbacks() + recursion_limit = self._recursion_limit(self.mode) + logger.info("Compiling workflow with recursion_limit=%d", recursion_limit) + chain = workflow.compile().with_config( + RunnableConfig( + tags=["debug-subagent-unified"], + callbacks=llm_callbacks, + recursion_limit=recursion_limit, + ), + ) + logger.info("Workflow compiled successfully") + + tracer = trace.get_tracer(__name__) + with tracer.start_as_current_span("seed_gen_debug") as span: + set_crs_attributes( + span, + crs_action_category=CRSActionCategory.DYNAMIC_ANALYSIS, + crs_action_name="seed_gen_debug", + task_metadata=dict(self.task.challenge_task.task_meta.metadata), + extra_attributes={ + "gen_ai.request.model": self.task.llm.model_name, # type: ignore[attr-defined] + "debug_mode": self.mode.value, + }, + ) + + # Run the workflow + logger.info("Invoking debug workflow chain") + final_state = chain.invoke(state) # type: ignore[arg-type] + logger.info("Debug workflow chain completed") + + # Get values from state (final_state is a dict) + debug_script = final_state.get("debug_script", "") or "" + debug_script_output = final_state.get("debug_script_output", "") or "" + debug_interactive_output = final_state.get("debug_interactive_output", "") or "" + debug_commands = final_state.get("debug_commands", []) + analysis = final_state.get("analysis", "") or "" + reflection = final_state.get("reflection", "") or "" + pov_valid = final_state.get("pov_valid", False) + debug_attempts = final_state.get("debug_attempts", []) + + # Use interactive output if available (for interactive/hybrid modes), + # otherwise use script output (for batch mode) + debug_output = debug_interactive_output if debug_interactive_output else debug_script_output + + logger.info( + """Debug state extracted: analysis_len=%d, script_len=%d, + commands=%d, output_len=%d, reflection_len=%d, attempts=%d""", + len(analysis), + len(debug_script), + len(debug_commands), + len(debug_output), + len(reflection), + len(debug_attempts), + ) + + # Write results to output directory if provided + if output_dir: + output_dir.mkdir(parents=True, exist_ok=True) + if debug_script: + (output_dir / "debug_script.gdb").write_text(debug_script) + if debug_commands: + (output_dir / "debug_commands.txt").write_text("\n".join(debug_commands)) + if debug_script_output: + (output_dir / "debug_script_output.txt").write_text(debug_script_output) + if debug_interactive_output: + (output_dir / "debug_interactive_output.txt").write_text(debug_interactive_output) + # Write unified debug_output.txt (contains either script or interactive output) + if debug_output: + (output_dir / "debug_output.txt").write_text(debug_output) + if analysis: + (output_dir / "analysis.txt").write_text(analysis) + if reflection: + (output_dir / "reflection.txt").write_text(reflection) + (output_dir / "pov_valid.txt").write_text(str(pov_valid)) + if debug_attempts: + attempts_text = "\n\n".join(str(attempt) for attempt in debug_attempts) + (output_dir / "debug_attempts.txt").write_text(attempts_text) + + logger.info( + "Debug session completed: pov_valid=%s, iterations=%d, attempts=%d", + pov_valid, + final_state.get("debug_iteration", 0), + len(debug_attempts), + ) + + return DebugResult( + debug_commands=debug_commands, + pov_valid=pov_valid, + debug_output=debug_output, + analysis=analysis, + reflection=reflection, + debug_script=debug_script, + attempts=debug_attempts, + ) + + except Exception as err: + logger.exception("Failed debug session: %s", str(err)) + return DebugResult( + debug_commands=[], + pov_valid=False, + debug_output=f"Error: {str(err)}", # Use debug_output field name + analysis="", + reflection="", + debug_script="", + attempts=[], + ) + + def _get_context(self, state: DebugTaskState) -> Command: + """Get context about the codebase for debugging""" + logger.info("Getting context for debugging") + if state.debug_script: + prev_debug_attempt = ( + f""" We attempted a batch debug session before, and determined that more context """ + f"""and a new interactive debug session are needed to answer the query. +Here is the previous debug attempt: + +{state.debug_script} + +Here is the previous debug output: + +{state.debug_script_output} + +Please gather more context about the codebase that will help with debugging. +""" + ) + else: + prev_debug_attempt = "" + prompt_vars = { + "harness": str(state.harness), + "debug_context": state.debug_context, + "retrieved_context": state.format_retrieved_context(), + "prev_debug_attempt": prev_debug_attempt, + } + # Use custom llm_with_debug_tools that includes grep + prompt = ChatPromptTemplate.from_messages( + [ + ("system", DEBUG_GET_CONTEXT_SYSTEM_PROMPT), + ("human", DEBUG_GET_CONTEXT_USER_PROMPT), + ] + ) + formatted_prompt = prompt.invoke(prompt_vars) + res = self.llm_with_debug_tools.invoke([*formatted_prompt.to_messages(), *state.messages]) + cmd: Command = Command( + update={ + "messages": [res], + "context_iteration": state.context_iteration + 1, + }, + ) + return cmd + + def _analyze_debug(self, state: DebugTaskState) -> Command: + """Analyze the debugging task and plan the debug script""" + logger.info("Analyzing debug task") + + # Get PoV information + pov_path = str(state.pov_input_path) if hasattr(state, "pov_input_path") else "unknown" + pov_size = ( + state.pov_input_path.stat().st_size + if hasattr(state, "pov_input_path") and state.pov_input_path.exists() + else 0 + ) + + # Get build info + + prompt_vars = { + "harness": str(state.harness), + "debug_context": state.debug_context, + "retrieved_context": state.format_retrieved_context(), + "previous_attempts": state.format_debug_attempts(), + "pov_path": pov_path, + "pov_size": pov_size, + } + prompt = ChatPromptTemplate.from_messages( + [ + ("system", DEBUG_ANALYZE_SYSTEM_PROMPT), + ("human", DEBUG_ANALYZE_USER_PROMPT), + ], + ) + chain = prompt | self.task.llm | StrOutputParser() + analysis = chain.invoke(prompt_vars) + return Command(update={"analysis": analysis}) + + def _write_debug_script(self, state: DebugTaskState) -> Command: + """Write a GDB debug script (batch mode only)""" + logger.info("Writing debug script") + + # Get PoV information + pov_path = str(state.pov_input_path) if hasattr(state, "pov_input_path") else "unknown" + pov_size = ( + state.pov_input_path.stat().st_size + if hasattr(state, "pov_input_path") and state.pov_input_path.exists() + else 0 + ) + + prompt_vars = { + "harness": str(state.harness), + "debug_context": state.debug_context, + "analysis": state.analysis, + "retrieved_context": state.format_retrieved_context(), + "previous_attempts": state.format_debug_attempts(), + "pov_path": pov_path, + "pov_size": pov_size, + } + prompt = ChatPromptTemplate.from_messages( + [ + ("system", DEBUG_WRITE_SCRIPT_SYSTEM_PROMPT), + ("human", DEBUG_WRITE_SCRIPT_USER_PROMPT), + ], + ) + logger.debug(f"Prompt variables for debug script generation: {prompt_vars}") + + try: + # Get LLM response first to log it if extraction fails + chain_no_extract = prompt | self.task.llm + llm_response = chain_no_extract.invoke(prompt_vars) + + # Extract code from response (LLMs return AIMessage) + debug_script = extract_code(cast(AIMessage, llm_response)) + logger.info(f"Successfully extracted debug script ({len(debug_script)} chars)") + return Command(update={"debug_script": debug_script}) + except Exception as e: + logger.error(f"Failed to extract debug script from LLM response: {e}") + if "llm_response" in locals(): + content = getattr(llm_response, "content", str(llm_response)) + logger.error(f"LLM response content (first 500 chars): {content[:500] if content else 'None'}") + # Continue the loop with empty script - this iteration will be treated as failed + return Command(update={"debug_script": ""}) + + def _run_debug_script(self, state: DebugTaskState) -> Command: + """Run the debug script in a debug container (batch mode only)""" + logger.info("Running debug script") + if not state.debug_script: + logger.warning("No debug script to run") + return Command(update={"debug_script_output": "No debug script provided"}) + + # Write debug script to a temporary file + # NOTE: We do NOT delete this file. Docker needs it to remain accessible + # during the mount. The OS will clean it up later, or we could clean it + # up after Docker has fully completed, but that's complex with the current + # architecture where exec_docker_cmd might cache containers. + logger.info("Creating temporary GDB script file...") + logger.info(f" Script content length: {len(state.debug_script)} characters") + + debug_script_path = state.current_dir / "debug_script.gdb" + debug_script_path.write_text(state.debug_script) + + # Verify the file was created successfully + logger.info("Verifying file after creation:") + logger.info(f" Path: {debug_script_path}") + logger.info(f" Exists: {debug_script_path.exists()}") + if debug_script_path.exists(): + stat_info = debug_script_path.stat() + logger.info(f" Is file: {debug_script_path.is_file()}") + logger.info(f" Is directory: {debug_script_path.is_dir()}") + logger.info(f" Size: {stat_info.st_size} bytes") + logger.info(f" Permissions: {oct(stat_info.st_mode)}") + logger.info(f" Absolute path: {debug_script_path.resolve()}") + + if not debug_script_path.exists(): + logger.error(f"Failed to create debug script file at {debug_script_path}") + return Command(update={"debug_script_output": "Error: Failed to create debug script file"}) + + logger.info(f"Created debug script file: {debug_script_path} (size: {debug_script_path.stat().st_size} bytes)") + + try: + # Run the debug script using exec_docker_cmd with debug container + # Verify the file exists and is readable before passing to Docker + if not debug_script_path.exists(): + return Command( + update={"debug_script_output": f"Error: Debug script file not found at {debug_script_path}"} + ) + if not debug_script_path.is_file(): + return Command( + update={"debug_script_output": f"Error: Debug script path is not a file: {debug_script_path}"} + ) + + logger.info( + f"Debug script file verified: {debug_script_path} (size: {debug_script_path.stat().st_size} bytes)" + ) + + debug_script_output = self._execute_debug_script( + debug_script_path, state.pov_input_path, state.harness.harness_name + ) + try: + debug_script_path.unlink() + logger.info(f"Removed debug script file: {debug_script_path}") + except Exception as e: + logger.warning(f"Failed to remove debug script file {debug_script_path}: {e}") + # Truncate debug_script_output if necessary to 10k characters + MAX_DEBUG_SCRIPT_OUTPUT_CHARS_START = 10000 + MAX_DEBUG_SCRIPT_OUTPUT_CHARS_END = 10000 + + if ( + isinstance(debug_script_output, str) + and len(debug_script_output) > MAX_DEBUG_SCRIPT_OUTPUT_CHARS_START + MAX_DEBUG_SCRIPT_OUTPUT_CHARS_END + ): + logger.warning( + f"""debug_script_output length ({len(debug_script_output)}) + exceeds {MAX_DEBUG_SCRIPT_OUTPUT_CHARS_START} characters; truncating.""" + ) + debug_script_output = ( + debug_script_output[:MAX_DEBUG_SCRIPT_OUTPUT_CHARS_START] + + "\n\n... (truncated) \n\n..." + + debug_script_output[-MAX_DEBUG_SCRIPT_OUTPUT_CHARS_END:] + ) + return Command(update={"debug_script_output": debug_script_output}) + except Exception as err1: + logger.error(f"Error running debug script: {err1}") + try: + debug_script_path.unlink() + logger.info(f"Removed debug script file: {debug_script_path}") + except Exception as err2: + logger.warning(f"Failed to remove debug script file {debug_script_path}: {err2}") + return Command(update={"debug_script_output": f"Error: {str(err1)}"}) + + def _run_interactive_debug(self, state: DebugTaskState) -> Command: + """Run interactive GDB debugging session with LLM-driven commands (interactive mode only)""" + logger.info("Starting interactive debug session") + + try: + debug_interactive_output, debug_commands, debug_reasoning = self._execute_interactive_debug( + state.pov_input_path, state + ) + return Command( + update={ + "debug_interactive_output": debug_interactive_output, + "debug_commands": debug_commands, + } + ) + except Exception as e: + logger.error(f"Error running interactive debug: {e}") + return Command( + update={ + "debug_interactive_output": f"Error: {str(e)}", + "debug_commands": [], + } + ) + + def _reflect_debug(self, state: DebugTaskState) -> Command: + """Reflect on the debug output and summarize what happened""" + logger.info("Reflecting on debug output") + # For interactive mode, there's no debug_script, so provide a placeholder + debug_script = state.debug_script + if not debug_script: + debug_script = "" + debug_commands: list[str] = state.debug_commands + if not debug_commands: + debug_commands = [] + debug_interactive_output: str = state.debug_interactive_output + if not debug_interactive_output: + debug_interactive_output = "" + debug_script_output: str = state.debug_script_output + if not debug_script_output: + debug_script_output = "" + + # Get PoV information + pov_path = str(state.pov_input_path) if hasattr(state, "pov_input_path") else "unknown" + pov_size = ( + state.pov_input_path.stat().st_size + if hasattr(state, "pov_input_path") and state.pov_input_path.exists() + else 0 + ) + + prompt_vars = { + "harness": str(state.harness), + "debug_context": state.debug_context, + "analysis": state.analysis, + "debug_script_output": debug_script_output, + "debug_interactive_output": debug_interactive_output, + "debug_script": debug_script, + "debug_commands": debug_commands, + "pov_path": pov_path, + "pov_size": pov_size, + } + prompt = ChatPromptTemplate.from_messages( + [ + ("system", DEBUG_REFLECT_SYSTEM_PROMPT), + ("human", DEBUG_REFLECT_USER_PROMPT), + ], + ) + chain = prompt | self.task.llm | StrOutputParser() + reflection = chain.invoke(prompt_vars) + return Command(update={"reflection": reflection}) + + def _execute_debug_script( + self, + debug_script_path: Path, + pov_input_path: Path, + harness_name: str, + ) -> str: + """Execute a GDB debug script in a debug container (batch mode) + + IMPORTANT: Debug Symbol Support + -------------------------------- + This method attempts to use debug binaries (built with build_fuzzers_with_debug_symbols()) + which have FULL debug symbols (`-ggdb -gdwarf-4 -fno-inline`). If debug binaries are not available, + it falls back to regular production binaries which are compiled with `-gline-tables-only` + (minimal debug information). + + With FULL debug symbols (debug binaries): + - ✅ Function names work + - ✅ Line numbers work + - ✅ Variable names available + - ✅ Type information available + - ✅ Detailed debugging info available + + + GDB scripts should work with both, but will have better variable/type access with debug binaries. + """ + # Get a writable copy of the task + with self.reproduce_multiple.open() as mult: + # Select a build that contains the harness binary + # Prefer address sanitizer builds, but verify the harness exists in the selected build + selected = mult.select_build_for_harness(harness_name) + logger.info(f"Selected build path: {selected.binary_path}") + if selected is None: + raise ValueError("Build cache not available") + + task = selected.task + + # Determine the debug container image + debug_container_image = "gcr.io/oss-fuzz-base/base-runner-debug" + + # Resolve paths to ensure they're absolute + logger.info("Pre-resolve paths:") + logger.info(f" debug_script_path: {debug_script_path} (is_absolute: {debug_script_path.is_absolute()})") + logger.info(f" pov_input_path: {pov_input_path} (is_absolute: {pov_input_path.is_absolute()})") + logger.info(f" Current working directory: {Path.cwd()}") + + debug_script_path = debug_script_path.resolve() + pov_input_path = pov_input_path.resolve() + + logger.info("Post-resolve paths:") + logger.info(f" debug_script_path: {debug_script_path}") + logger.info(f" pov_input_path: {pov_input_path}") + + # Get the build output directory so GDB can find the binary + build_dir = task.get_build_dir() + logger.info(f"Build directory from task.get_build_dir(): {build_dir}") + + if not build_dir or not build_dir.exists(): + raise ValueError(f"Build directory not found or doesn't exist: {build_dir}") + + logger.info(f"Build directory exists: {build_dir}") + # List files in build_dir to debug + if build_dir.is_dir(): + files_in_build = list(build_dir.iterdir())[:10] # First 10 files + logger.info(f"Files in build_dir: {[f.name for f in files_in_build]}") + + # Use the resolved binary from the selected build + # The selection process already resolved the actual binary (handling wrappers, etc.) + if selected.binary_path is None or selected.binary_name is None: + raise ValueError(f"Failed to resolve binary path for harness '{harness_name}'") + + using_debug_binary = selected.using_debug + harness_binary_path = selected.binary_path + harness_name_for_path = selected.binary_name + + logger.info(f"Using {'debug' if using_debug_binary else 'regular'} binary: {harness_binary_path}") + + # Mount files for Docker + # Use unique paths to avoid conflicts with existing directories in the container + # Generate a unique filename based on the temp file name to ensure uniqueness + logger.info("=" * 80) + logger.info("Setting up Docker mounts...") + logger.info("=" * 80) + + # Get parent directories for both files + # NOTE: These are often DIFFERENT directories: + # - debug_script_path is in state.current_dir (a temp directory) + # - pov_input_path is in the output directory from testing + debug_script_parent = debug_script_path.parent + pov_input_parent = pov_input_path.parent + + # Check if they're in the same directory + if debug_script_parent == pov_input_parent: + # Both files are in the same directory - mount once to /work + debug_script_container_path = Path(f"/work/{debug_script_path.name}") + pov_input_container_path = Path(f"/work/{pov_input_path.name}") + logger.info("Debug script and PoV input are in the same directory") + else: + # Files are in different directories - mount separately + debug_script_container_path = Path(f"/work/debug/{debug_script_path.name}") + pov_input_container_path = Path(f"/work/input/{pov_input_path.name}") + logger.info("Debug script and PoV input are in DIFFERENT directories") + + logger.info("Host paths (source files on host):") + logger.info(f" Debug script: {debug_script_path}") + logger.info(f" Debug script parent: {debug_script_parent}") + logger.info(f" PoV input: {pov_input_path}") + logger.info(f" PoV input parent: {pov_input_parent}") + logger.info("Container paths (targets in container):") + logger.info(f" Debug script: {debug_script_container_path}") + logger.info(f" PoV input: {pov_input_container_path}") + + # Get project_name for container binary path + # build_dir is .../build/out/, so project_name is the last component + project_name = build_dir.name + # Binary path in container: /out// + # FUZZER_DEBUG builds output to /out// (same as regular builds) + # Legacy debug builds (from get_debug_binary_path) are in /out//debug/ + # Use the actual binary name (which may differ from harness_name if it was a wrapper) + binary_path = f"/out/{project_name}/{harness_name_for_path}" + + # Mount the parent of build_dir (which is .../build/out) to /out in container + # This matches the pattern used in debug_subagent_task.py + # build_dir is typically .../build/out/ + # We want to mount .../build/out to /out + out_dir = build_dir.parent # This should be .../build/out + + # Verify all source files exist before mounting + logger.debug("Verifying source files before Docker mount:") + logger.debug(" Debug script:") + logger.debug(f" Path: {debug_script_path}") + logger.debug(f" Exists: {debug_script_path.exists()}") + logger.debug(f" Is file: {debug_script_path.is_file()}") + logger.debug(f" Is directory: {debug_script_path.is_dir()}") + if debug_script_path.exists(): + logger.debug(f" Size: {debug_script_path.stat().st_size} bytes") + logger.debug(f" Absolute: {debug_script_path.resolve()}") + + logger.info(" PoV input:") + logger.debug(f" Path: {pov_input_path}") + logger.debug(f" Exists: {pov_input_path.exists()}") + logger.debug(f" Is file: {pov_input_path.is_file()}") + logger.debug(f" Is directory: {pov_input_path.is_dir()}") + if pov_input_path.exists(): + logger.debug(f" Size: {pov_input_path.stat().st_size} bytes") + logger.debug(f" Absolute: {pov_input_path.resolve()}") + + logger.debug(" Build dir:") + logger.debug(f" Path: {build_dir}") + logger.debug(f" Exists: {build_dir.exists()}") + logger.debug(f" Is directory: {build_dir.is_dir()}") + logger.debug(f" Absolute: {build_dir.resolve()}") + + logger.info(" Out dir (parent of build_dir):") + logger.debug(f" Path: {out_dir}") + logger.debug(f" Exists: {out_dir.exists()}") + logger.debug(f" Is directory: {out_dir.is_dir()}") + logger.debug(f" Absolute: {out_dir.resolve()}") + + # Mount parent directories based on whether files are in the same directory + if debug_script_parent == pov_input_parent: + # Same directory - mount once to /work + mount_dirs = { + pov_input_parent: Path("/work"), + } + else: + # Different directories - mount both separately + mount_dirs = { + debug_script_parent: Path("/work/debug"), + pov_input_parent: Path("/work/input"), + } + + # Mount the parent directory (build/out) to /out, not the project_name subdirectory + if out_dir.exists(): + mount_dirs[out_dir] = Path("/out") + logger.info(f" Using out_dir for /out mount: {out_dir}") + else: + # Fallback: mount build_dir directly if parent doesn't exist + logger.warning(f"Out directory {out_dir} does not exist, falling back to mounting build_dir directly") + mount_dirs[build_dir] = Path("/out") + # If we mount build_dir directly, binary path should be /out/ + binary_path = f"/out/{harness_name_for_path}" + logger.info(f" Using build_dir for /out mount (fallback): {build_dir}") + + source_path = task.get_source_path() + if source_path and source_path.exists(): + # Mount source at the WORKDIR from Dockerfile to match the build environment + # This is the path that was used during compilation (e.g., "/src/FreeRDP") + workdir = task.workdir_from_dockerfile() + mount_dirs[source_path] = workdir + logger.info(f" Mounting source code: {source_path} -> {workdir}") + else: + logger.warning(f"Source code path not found or doesn't exist: {source_path}") + logger.debug("Final mount configuration:") + for src, dst in mount_dirs.items(): + src_resolved = src.resolve() if hasattr(src, "resolve") else Path(str(src)).resolve() + dst_path = dst.resolve() if hasattr(dst, "resolve") else Path(str(dst)) + logger.debug(f" {src_resolved.as_posix()} -> {dst_path.as_posix()}") + logger.debug(f" Source exists: {src_resolved.exists()}") + logger.debug(f" Source is_file: {src_resolved.is_file() if src_resolved.exists() else 'N/A'}") + logger.debug(f" Source is_dir: {src_resolved.is_dir() if src_resolved.exists() else 'N/A'}") + logger.debug(f" Destination path type: {type(dst_path)}") + logger.debug(f" Destination as_posix(): {dst_path.as_posix()}") + # Check if destination path looks suspicious + if str(dst_path).endswith("/"): + logger.warning(" WARNING: Destination path ends with '/' - this might cause issues!") + if "//" in str(dst_path): + logger.warning(" WARNING: Destination path contains '//' - this might cause issues!") + + logger.info("Container paths:") + logger.info(f" Debug script: {debug_script_container_path}") + logger.info(f" PoV input: {pov_input_container_path}") + logger.info(f" Binary: {binary_path}") + logger.info("=" * 80) + + # Create the GDB command + # Ensure all items are strings (Path objects cause join() to fail) + gdb_cmd = [ + "gdb", + "-batch", + "-x", + str(debug_script_container_path), + "--args", + str(binary_path), # Ensure binary_path is also a string + str(pov_input_container_path), + ] + + logger.info("GDB command to execute in container:") + logger.info(f" {' '.join(gdb_cmd)}") + logger.info(f" Script path in container: {debug_script_container_path}") + logger.info(f" Binary path in container: {binary_path}") + logger.info(f" PoV input path in container: {pov_input_container_path}") + + # Run in debug container + logger.info("Executing Docker command with:") + logger.info(f" Container image: {debug_container_image}") + logger.info(f" Number of mounts: {len(mount_dirs)}") + logger.info(" Mount details logged above") + + # Log what the actual Docker mount command will look like + for src, dst in mount_dirs.items(): + src_resolved = src.resolve() if hasattr(src, "resolve") else Path(str(src)).resolve() + dst_path = dst.resolve() if hasattr(dst, "resolve") else Path(str(dst)) + mount_spec = f"{src_resolved.as_posix()}:{dst_path.as_posix()}" + logger.info(f" -v {mount_spec}") + # Check for potential issues + if str(dst_path).endswith("/"): + logger.error(" ERROR: Destination ends with '/' - Docker will treat this as a directory mount!") + if " " in str(dst_path): + logger.warning(" WARNING: Destination contains spaces - may cause issues") + + # Combine GDB command with verification in the SAME container + # This way we can see what actually happened in the container where GDB ran + combined_cmd = [ + "bash", + "-c", + f""" + # Run GDB + echo "=== Running GDB ===" + {" ".join(gdb_cmd)} + gdb_exit_code=$? + echo "" + """, + ] + + result = task.exec_docker_cmd( + combined_cmd, + mount_dirs=mount_dirs, + container_image=debug_container_image, + ) + logger.info("Docker command completed:") + logger.info(f" Success: {result.success}") + logger.info(f" Return code: {result.returncode}") + logger.info(f" Output length: {len(result.output)} bytes") + logger.info(f" Error length: {len(result.error)} bytes") + if result.error: + logger.info(f" Error preview: {result.error[:500].decode('utf-8', errors='ignore')}") + + if not result.success: + return f"""GDB execution failed:\nSTDOUT: {result.output.decode("utf-8", errors="ignore")} +STDERR: {result.error.decode("utf-8", errors="ignore")}""" + + output = result.output.decode("utf-8", errors="ignore") + error = result.error.decode("utf-8", errors="ignore") + return f"GDB Output:\n{output}\n\nGDB Errors:\n{error}" + + def _execute_interactive_debug( + self, + pov_input_path: Path, + state: DebugTaskState, + ) -> tuple[str, list[str], list[str]]: + """Execute interactive GDB debugging session with LLM-driven commands (interactive mode) + + Returns: + Tuple of (debug_output, debug_commands, debug_reasoning) where: + - debug_output: Combined output from all GDB commands + - debug_commands: List of commands executed + - debug_reasoning: List of LLM reasoning for each command + """ + # Get a writable copy of the task + with self.reproduce_multiple.open() as mult: + if mult.builds_cache is None or not mult.builds_cache: + raise ValueError("Build cache not available") + + # Use the harness name from the PoV's harness (not self.task.harness_name) + # Note: self.task.harness_name should be the same as state.harness.harness_name + # since the harness was retrieved using self.task.harness_name in _init_state(). + # However, using state.harness.harness_name is more explicit and defensive. + harness_name = state.harness.harness_name + + # Select a build that contains the harness binary + # Prefer address sanitizer builds, but verify the harness exists in the selected build + selected = mult.select_build_for_harness(harness_name) + if selected is None: + raise ValueError("Build cache not available") + + task = selected.task + selected_build = selected.build_output + using_debug_binary = selected.using_debug + + debug_container_image = "gcr.io/oss-fuzz-base/base-runner-debug" + + # Resolve paths + pov_input_path = pov_input_path.resolve() + + # Verify PoV input file exists and is accessible + if not pov_input_path.exists(): + raise ValueError(f"PoV input file does not exist: {pov_input_path}") + if not pov_input_path.is_file(): + raise ValueError(f"PoV input path is not a file: {pov_input_path}") + if pov_input_path.exists(): + logger.info(f" Size: {pov_input_path.stat().st_size} bytes") + logger.info(f" Absolute: {pov_input_path.resolve()}") + + # Get build directory and binary path + build_dir = task.get_build_dir() + if not build_dir or not build_dir.exists(): + raise ValueError(f"Build directory not found or doesn't exist: {build_dir}") + + # Use the resolved binary from the selected build + # The selection process already resolved the actual binary (handling wrappers, etc.) + if selected.binary_path is None or selected.binary_name is None: + raise ValueError(f"Failed to resolve binary path for harness '{harness_name}'") + + using_debug_binary = selected.using_debug + harness_binary_path = selected.binary_path + harness_name_for_path = selected.binary_name + + logger.info(f"Using {'debug' if using_debug_binary else 'regular'} binary: {harness_binary_path}") + + # Determine binary path in container + project_name = build_dir.name + # FUZZER_DEBUG builds output to /out// (same as regular builds) + # Legacy debug builds (from get_debug_binary_path) are in /out//debug/ + is_fuzzer_debug = selected_build.build_type == BuildType.FUZZER_DEBUG + if using_debug_binary and not is_fuzzer_debug: + # Legacy debug builds in /out//debug/ + binary_path = f"/out/{project_name}/debug/{harness_name_for_path}" + else: + # Regular builds and FUZZER_DEBUG builds both in /out// + binary_path = f"/out/{project_name}/{harness_name_for_path}" + + # Set up mount directories + pov_input_parent = pov_input_path.parent + pov_input_container_path = f"/work/{pov_input_path.name}" + out_dir = build_dir.parent + + mount_dirs = { + pov_input_parent: Path("/work"), + } + if out_dir.exists(): + mount_dirs[out_dir] = Path("/out") + else: + mount_dirs[build_dir] = Path("/out") + binary_path = f"/out/{harness_name_for_path}" + + source_path = task.get_source_path() + if source_path and source_path.exists(): + # Mount source at the WORKDIR from Dockerfile to match the build environment + # This is the path that was used during compilation (e.g., "/src/FreeRDP") + workdir = task.workdir_from_dockerfile() + mount_dirs[source_path] = workdir + logger.info(f" Mounting source code: {source_path} -> {workdir}") + else: + logger.warning(f"Source code path not found or doesn't exist: {source_path}") + + logger.info("Mount directories:") + for host_path, container_path in mount_dirs.items(): + logger.info(f" {host_path} -> {container_path}") + + # Create InteractiveGDBDocker session + logger.info("Creating interactive GDB session") + logger.info( + f"GDB command will be: gdb -q --interpreter=mi2 --args {binary_path} {pov_input_container_path}" + ) + logger.info(f" Binary path in container: {binary_path}") + logger.info(f" Seed file path in container: {pov_input_container_path}") + logger.info(f" Seed file should be accessible at: {pov_input_container_path}") + + with tempfile.TemporaryDirectory(dir=state.current_dir) as scratchpad_dir_str: + # Note: InteractiveGDBDocker will automatically mount scratchpad_dir to /scratchpad + # if it's not already mounted, so we don't need to add it to mount_dirs here + gdb_session = InteractiveGDBDocker( + container_image=debug_container_image, + mount_dirs=mount_dirs, + binary_path=binary_path, + input_path=pov_input_container_path, + scratchpad_dir=Path(scratchpad_dir_str), + ) + + try: + # Start the GDB session + gdb_session.run() + logger.info("GDB session started") + + # Initial setup commands + setup_commands = [ + "set breakpoint pending on", + "set print elements 0", + "set print pretty on", + "set pagination off", + "set verbose off", + ] + + all_output_lines: list[str] = [] + executed_commands: list[str] = [] + debug_reasoning: list[str] = [] + # Run setup commands + for cmd in setup_commands: + logger.info(f"Setup: {cmd}") + result = gdb_session.console(cmd, timeout=5.0) + all_output_lines.extend(result.lines) + executed_commands.append(cmd) + + # Interactive loop with LLM (depth 10) + command_count = 0 + session_history: list[str] = [] + + while command_count < self.MAX_INTERACTIVE_COMMANDS: + # Build prompt for next command + history_text = "\n\n".join(session_history) if session_history else "No commands executed yet" + + # Get harness from state if available, otherwise use task + harness_str = ( + str(state.harness) + if hasattr(state, "harness") and state.harness + else str(self.task.harness_name) + ) + prev_cmd_output = ( + "\n".join(all_output_lines[-30:]) if all_output_lines else "No commands executed yet" + ) + if state.debug_script: + prev_debug_attempt = ( + f""" We attempted a batch debug session before, and determined that more context """ + f"""and a new interactive debug session are needed to answer the query. +Here is the previous debug attempt: + +{state.debug_script} + +Here is the previous debug output: + +{state.debug_script_output} + +You are restarting fresh, this is just for context. +""" + ) + else: + prev_debug_attempt = "" + + # Get PoV and build info for prompt + pov_path = str(state.pov_input_path) if hasattr(state, "pov_input_path") else "unknown" + pov_size = ( + state.pov_input_path.stat().st_size + if hasattr(state, "pov_input_path") and state.pov_input_path.exists() + else 0 + ) + + prompt_vars = { + "harness": harness_str, + "debug_context": state.debug_context + if hasattr(state, "debug_context") + else "Interactive debugging session", + "analysis": state.analysis + if hasattr(state, "analysis") and state.analysis + else "Use GDB to investigate program execution", + "session_history": history_text, + "commands_remaining": self.MAX_INTERACTIVE_COMMANDS - command_count, + "prev_debug_attempt": prev_debug_attempt, + "prev_cmd_output": prev_cmd_output, + "pov_path": pov_path, + "pov_size": pov_size, + } + logger.debug("history_text: %s", history_text) + + # Prompt LLM for next command + next_command_prompt = ChatPromptTemplate.from_messages( + [ + ("system", DEBUG_INTERACTIVE_COMMAND_SYSTEM_PROMPT), + ("human", DEBUG_INTERACTIVE_COMMAND_USER_PROMPT), + ] + ) + + chain = next_command_prompt | self.task.llm | StrOutputParser() + llm_response = chain.invoke(prompt_vars) + logger.debug("llm_response: %s", llm_response) + debug_reasoning.append(llm_response) + # Extract command from string response (StrOutputParser returns a string) + # Try to extract code block, otherwise use the response as-is + try: + # extract_code expects AIMessage, but we have a string + # Create a temporary AIMessage for extraction + temp_msg = AIMessage(content=llm_response) + next_command = extract_code(temp_msg) + except Exception: + # If extraction fails, try simple regex for code blocks + code_match = re.search(r"```(?:gdb)?\n(.*?)```", llm_response, re.DOTALL) + if code_match: + next_command = code_match.group(1).strip() + else: + # No code block, use the response directly (might be "quit" or a command) + next_command = llm_response.strip() + + if not next_command or next_command.lower() in ["quit", "done", "exit", "q"]: + logger.info("LLM indicated debugging complete") + break + + # Split multi-line commands and execute each line individually + # Filter out comment lines (they cause errors in GDB MI) + command_lines = [ + line.strip() + for line in next_command.split("\n") + if line.strip() and not line.strip().startswith("#") + ] + logger.info( + f"Executing GDB command(s) [{command_count + 1}/{self.MAX_INTERACTIVE_COMMANDS}]: " + f"{len(command_lines)} line(s)" + ) + logger.debug(f"Command lines: {command_lines}") + + found_quit = False + # checking for quit in the command lines + for command in command_lines: + if command.lower() in ["quit", "done", "exit", "q"]: + found_quit = True + break + session_history.append("\n") + session_history.append("\n".join(command_lines)) + session_history.append("\n") + result = gdb_session.process_commands(command_lines) + all_output_lines.extend(result) + executed_commands.extend(command_lines) + command_count += 1 + # Log the block of commands being sent and output received + logger.info(f"Sent GDB command block:\n{command_lines}") + logger.info(f"Received GDB output:\n{result}") + # limiting the output to 3k characters to avoid overwhelming the LLM + total_output_length = 0 + total_lines = 0 + for line in result: + total_output_length += len(line) + if total_output_length < 4000: + total_lines += 1 + else: + break + total_lines += 1 + lines_removed = len(result) - total_lines + if result: + session_history.append("\n") + session_history.append("\n".join(result[:total_lines])) + if lines_removed > 10: + session_history.append("... (truncated) --- ") + session_history.append("\n".join(result[-10:])) + elif lines_removed > 0: + session_history.append("\n".join(result[-lines_removed:])) + session_history.append("\n") + + logger.info(f"Session history: {session_history}") + + # If we hit quit in a command line, break out of the main loop + if found_quit: + break + + # Finalize output + logger.info(f"Interactive debug session completed: {command_count} commands executed") + + return "\n" + "\n".join(session_history), executed_commands, debug_reasoning + + finally: + # Clean up + try: + gdb_session.close() + except Exception as e: + logger.warning(f"Error closing GDB session: {e}") + + def _continue_debug(self, state: DebugTaskState) -> bool: + """Determine whether to continue debugging""" + # Continue if PoV is not valid and we haven't exceeded max iterations + return not state.pov_valid and state.debug_iteration < self.MAX_DEBUG_ITERATIONS + + def _continue_context_retrieval(self, state: DebugTaskState) -> bool: + """Determine if we should continue the context retrieval iteration""" + return state.context_iteration < self.MAX_CONTEXT_ITERATIONS + + def _continue_context_retrieval_again(self, state: DebugTaskState) -> bool: + """Determine if we should continue the context retrieval iteration""" + return state.context_iteration_again < self.MAX_CONTEXT_ITERATIONS_AGAIN + + def _build_workflow(self, mode: DebugMode) -> StateGraph: + """Build the workflow for the debug task""" + workflow = StateGraph(DebugTaskState) + + workflow.add_node("get_context", self._get_context) + tool_node = ToolNode(self.debug_tools, name="tools") + workflow.add_node("tools", tool_node) + workflow.add_node("analyze_debug", self._analyze_debug) + + if mode == DebugMode.BATCH or mode == DebugMode.HYBRID: + # Batch mode workflow + workflow.add_node("write_debug_script", self._write_debug_script) + workflow.add_node("run_debug_script", self._run_debug_script) + if mode == DebugMode.HYBRID: + # Hybrid mode workflow + workflow.add_node("needs_interactive_follow_up", self._needs_interactive_follow_up) + workflow.add_node("gather_context_again", self._get_context) + workflow.add_node("tools_again", tool_node) + if mode == DebugMode.INTERACTIVE or mode == DebugMode.HYBRID: + # Interactive mode workflow + workflow.add_node("run_interactive_debug", self._run_interactive_debug) + + workflow.add_node("reflect_debug", self._reflect_debug) + + workflow.set_entry_point("get_context") + workflow.add_edge("get_context", "tools") + workflow.add_conditional_edges( + "tools", + self._continue_context_retrieval, + { + True: "get_context", + False: "analyze_debug", + }, + ) + + if mode == DebugMode.BATCH: + workflow.add_edge("analyze_debug", "write_debug_script") + workflow.add_edge("write_debug_script", "run_debug_script") + workflow.add_edge("run_debug_script", "reflect_debug") + elif mode == DebugMode.INTERACTIVE: + workflow.add_edge("analyze_debug", "run_interactive_debug") + workflow.add_edge("run_interactive_debug", "reflect_debug") + elif mode == DebugMode.HYBRID: + workflow.add_edge("analyze_debug", "write_debug_script") + workflow.add_edge("write_debug_script", "run_debug_script") + workflow.add_edge("run_debug_script", "needs_interactive_follow_up") + workflow.add_conditional_edges( + "needs_interactive_follow_up", + self._continue_interactive_follow_up, + { + True: "gather_context_again", + False: "reflect_debug", + }, + ) + + workflow.add_edge("gather_context_again", "tools_again") + workflow.add_conditional_edges( + "tools_again", + self._continue_context_retrieval, + { + True: "gather_context_again", + False: "run_interactive_debug", + }, + ) + workflow.add_edge("run_interactive_debug", "reflect_debug") + + workflow.add_edge("reflect_debug", END) + + return workflow + + def _recursion_limit(self, mode: DebugMode) -> int: + """Calculate recursion limit for the workflow + + The workflow structure: + 1. Context gathering phase: get_context -> tools (can loop multiple times) + - Each tool call from the LLM counts as a step + - Can have multiple tool calls per iteration + 2. Debug phase: + - Batch: analyze_debug -> write_debug_script -> run_debug_script -> reflect_debug + - Interactive: analyze_debug -> run_interactive_debug -> reflect_debug + - Hybrid: analyze_debug -> write_debug_script -> run_debug_script -> needs_interactive_follow_up + -> (if yes) gather_context_again -> tools_again -> run_interactive_debug -> reflect_debug + -> (if no) reflect_debug + + We need to be generous with the limit because tool calls add up quickly. + """ + # Each context iteration: get_context (1) + tools (N tool calls) + # Estimate max tool calls per context iteration + context_steps_per_iteration = 1 + self.ESTIMATED_TOOLS_PER_CONTEXT + context_total = context_steps_per_iteration * self.MAX_CONTEXT_ITERATIONS + + if mode == DebugMode.BATCH: + # Single debug pass: analyze + write + run + reflect + debug_steps = 4 + elif mode == DebugMode.INTERACTIVE: + # Single debug pass: analyze + run_interactive + reflect + # Interactive loop adds MAX_INTERACTIVE_COMMANDS LLM calls + debug_steps = 3 + self.MAX_INTERACTIVE_COMMANDS + else: # HYBRID + # Hybrid: batch phase + potentially interactive phase + # Batch: analyze + write + run + needs_interactive_follow_up (4) + # If interactive needed: gather_context_again + tools_again (can loop) + run_interactive + reflect + # Worst case: batch (4) + context_again (1 + tools) + interactive (MAX_INTERACTIVE_COMMANDS) + reflect (1) + batch_steps = 4 # analyze + write + run + needs_interactive_follow_up + interactive_context_steps = ( + context_steps_per_iteration # gather_context_again + tools_again (worst case one iteration) + ) + interactive_steps = 1 + self.MAX_INTERACTIVE_COMMANDS # run_interactive_debug + reflect_step = 1 # reflect_debug + debug_steps = batch_steps + interactive_context_steps + interactive_steps + reflect_step + return 1 + context_total + debug_steps + + def _needs_interactive_follow_up(self, state: DebugTaskState) -> Command: + """Use LLM to determine if an interactive debugging follow-up is needed after batch mode""" + logger.info("Checking if interactive debugging follow-up is needed") + + # Don't run interactive if PoV is already valid or we've exceeded max iterations + if state.pov_valid: + logger.info("PoV is valid, skipping interactive follow-up") + return Command(update={"needs_interactive_follow_up": False}) + + if state.debug_iteration >= self.MAX_DEBUG_ITERATIONS: + logger.info("Max debug iterations reached, skipping interactive follow-up") + return Command(update={"needs_interactive_follow_up": False}) + + # Use LLM to analyze batch results and determine if interactive follow-up is needed + prompt_vars = { + "harness": str(state.harness), + "debug_context": state.debug_context, + "analysis": state.analysis, + "debug_script": state.debug_script, + "debug_output": state.debug_script_output, + "pov_valid": state.pov_valid, + "previous_attempts": state.format_debug_attempts(), + } + + prompt = ChatPromptTemplate.from_messages( + [ + ("system", DEBUG_INTERACTIVE_FOLLOW_UP_SYSTEM_PROMPT), + ("human", DEBUG_INTERACTIVE_FOLLOW_UP_USER_PROMPT), + ], + ) + chain = prompt | self.task.llm | StrOutputParser() + + try: + response = chain.invoke(prompt_vars).strip().lower() + logger.info(f"LLM response for interactive follow-up decision: {response}") + + # Parse response - should be "yes" or "no" + needs_follow_up = response == "yes" + + logger.info(f"Determined interactive follow-up needed: {needs_follow_up}") + return Command(update={"needs_interactive_follow_up": needs_follow_up}) + except Exception as e: + logger.error(f"Error determining interactive follow-up: {e}") + return Command(update={"needs_interactive_follow_up": False}) + + def _continue_interactive_follow_up(self, state: DebugTaskState) -> bool: + """Determine whether to continue with interactive follow-up based on LLM decision""" + return state.needs_interactive_follow_up diff --git a/seed-gen/src/buttercup/seed_gen/interactive_debug_docker.py b/seed-gen/src/buttercup/seed_gen/interactive_debug_docker.py new file mode 100644 index 00000000..c952c17c --- /dev/null +++ b/seed-gen/src/buttercup/seed_gen/interactive_debug_docker.py @@ -0,0 +1,292 @@ +import queue +import re +import signal +import time +from collections.abc import Callable +from pathlib import Path + +from buttercup.common.docker_interactive import CommandResult, DockerInteractive + +_MI_STOP_RE = re.compile(r"^\*stopped\b") # MI async stop record +_MI_RESULT_RE = re.compile(r"^\d+\^(done|error|running)\b") + + +class InteractiveGDBDockerError(Exception): + """Base class for InteractiveGDBDocker errors.""" + + +_tok_prefix = re.compile(r"^\d+(?=[\^*+=~@&])") # digits before a MI record marker + + +def strip_tok_prefix(line: str) -> str: + return _tok_prefix.sub("", line) + + +def mi_completion(token: int) -> Callable[[list[str]], bool]: + # Tokened result record for *this* command. + result_pat = re.compile(rf"^{token}\^(done|error|running)\b") + stopped_pat = re.compile(r"^\*stopped\b") + + # GDB prompt in MI appears via console stream records: + # ~"(gdb) \n" + # ~"> \n" (during 'commands' / define / etc.) + prompt_pat = re.compile(r'^[~@&]"(?:\(gdb\)|>)') # starts with (gdb) or > in a quoted stream + + saw_running = False + saw_stopped = False + + def done(lines: list[str]) -> bool: + nonlocal saw_running, saw_stopped + + for ln in lines: + m = result_pat.match(ln) + if m: + kind = m.group(1) + if kind in ("done", "error"): + # For non-running commands, the result record is enough. + return True + if kind == "running": + saw_running = True + # keep reading until stop+prompt + + if saw_running and stopped_pat.match(ln): + saw_stopped = True + # don't return yet; prints can still follow + + # After a stop, wait until we see the prompt, which indicates GDB is ready. + if saw_running and saw_stopped and prompt_pat.match(ln): + return True + + return False + + return done + + +class InteractiveGDBDocker(DockerInteractive): + def __init__( + self, + container_image: str, + mount_dirs: dict[Path, Path], + binary_path: str, + input_path: str, + global_timeout: float = 600.0, + scratchpad_dir: Path | None = None, + ): + # Ensure scratchpad_dir is mounted as /scratchpad if provided and not already present + if scratchpad_dir is not None: + scratchpad_mountpoint = Path("/scratchpad") + need_mount = True + for host_path, cont_path in mount_dirs.items(): + # Compare normalized mount points + if Path(cont_path).resolve() == scratchpad_mountpoint: + need_mount = False + break + if need_mount: + mount_dirs = dict(mount_dirs) # copy to not mutate caller's dict + mount_dirs[scratchpad_dir] = scratchpad_mountpoint + super().__init__( + container_image, + mount_dirs, + start_command=["gdb", "-q", "--interpreter=mi2", "--args", binary_path, input_path], + global_timeout=global_timeout, + ) + self.scratchpad_dir = scratchpad_dir + self._tok = 1 + + def unescape_mi(self, s: str) -> str: + return s.replace(r"\n", "\n").replace(r"\t", "\t").replace(r"\\", "\\").replace(r"\"", '"') + + def mi(self, mi_cmd: str, timeout: float = 10.0) -> CommandResult: + tok = self._tok + self._tok += 1 + full = f"{tok}{mi_cmd}" + return self.send_command(full, completion=mi_completion(tok), timeout=timeout) + + def console(self, cmd: str, timeout: float = 10.0) -> CommandResult: + esc = cmd.replace("\\", "\\\\").replace('"', '\\"') + cmd_result = self.mi(f'-interpreter-exec console "{esc}"', timeout=timeout) + newlines: list[str] = [] + for line in cmd_result.lines: + line = strip_tok_prefix(line) + if (line.startswith('~"') or line.startswith('@"') or line.startswith('&"')) and line.endswith('"'): + line = self.unescape_mi(line[2:-1]) # decode C escapes + + if line.startswith("~"): + newlines.append(line) + elif line.startswith("@"): + newlines.append("inferior output: " + line) + elif line.startswith("*"): + newlines.append(line) + elif line[:1] not in "^~@*&=": + newlines.append("runtime output: " + line) + + cmd_result.lines = newlines + return cmd_result + + def process_commands(self, commands: list[str]) -> list[str]: + lines: list[str] = [] + if self.scratchpad_dir is not None: + # Write commands to a file in the scratchpad (host path) + scratchpad = Path(self.scratchpad_dir) + cmd_gdb_path = scratchpad / "cmdset.gdb" + with open(cmd_gdb_path, "w") as f: + for cmd in commands: + f.write(cmd) + if not cmd.endswith("\n"): + f.write("\n") + + # Source the file using the CONTAINER path + # The scratchpad is always mounted at /scratchpad in the container + container_script_path = "/scratchpad/cmdset.gdb" + cmd_result = self.console(f"source {container_script_path}") + + lines.extend(cmd_result.lines) + return lines + else: + for cmd in commands: + cmd_result = self.console(cmd) + lines.extend(cmd_result.lines) + return lines + + def interrupt(self) -> list[str]: + """ + Best-effort interrupt for a GDB session running in a docker container. + + Goal (in order): + 1) Stop the inferior (Ctrl-C semantics) while keeping gdb alive. + 2) If we can't regain control, kill the inferior (keep gdb if possible). + 3) If we still can't recover, tear down the whole container/session. + + Returns log lines + any drained output. + """ + if self.docker_process is None: + return ["(interrupt) no process running"] + + out: list[str] = [] + + def host_alive() -> bool: + return self.docker_process is not None and self.docker_process.poll() is None + + # Container name is the best handle (docker kill hits container even if host client is wedged) + cname = self.container_name + + def saw(prefix: str, lines: list[str]) -> bool: + return any(line.startswith(prefix) for line in lines) + + def drain_for(seconds: float, max_lines: int = 200) -> list[str]: + """Drain output for up to `seconds` or until max_lines reached.""" + lines: list[str] = [] + deadline = time.time() + seconds + while time.time() < deadline and len(lines) < max_lines: + try: + line = self.out_q.get(timeout=0.05) + except queue.Empty: + continue + lines.append(line) + if line == "": + break + return lines + + def wait_for_stop(timeout: float = 1.0) -> list[str]: + """ + Drain output until we see an MI stop indicator or timeout. + In MI mode, stopping typically emits '*stopped,...'. + If the inferior exits, you may see '=thread-group-exited,...'. + """ + lines: list[str] = [] + deadline = time.time() + timeout + while time.time() < deadline: + try: + line = self.out_q.get(timeout=0.1) + except queue.Empty: + continue + lines.append(line) + if line == "": + break + if line.startswith("*stopped") or line.startswith("=thread-group-exited"): + break + return lines + + def write_stdin(s: str) -> None: + if self.docker_process is None or self.docker_process.stdin is None: + raise InteractiveGDBDockerError("stdin not available, process is not running") + self.docker_process.stdin.write(s) + self.docker_process.stdin.flush() + + def docker_sig(sig: str) -> None: + # self._docker expects args like ["kill", "-s", "INT", cname] + if cname: + self._docker(["kill", "-s", sig, cname]) + else: + # Fallback: signal host docker client process + if sig == "INT": + self.docker_process.send_signal(signal.SIGINT) + elif sig == "TERM": + self.docker_process.terminate() + elif sig == "KILL": + self.docker_process.kill() + + # --- Phase 1: Try to stop the inferior without tearing anything down --- + + # 1A) MI-native interrupt (best if running MI2) + try: + out.append("(interrupt) trying MI: -exec-interrupt (stop inferior)") + write_stdin("-exec-interrupt\n") + except Exception as e: + out.append(f"(interrupt) MI -exec-interrupt write failed: {e!r}") + + out.extend(wait_for_stop(timeout=0.8)) + if saw("*stopped", out) or saw("=thread-group-exited", out): + out.append("(interrupt) success: inferior stopped/exited (MI stop record seen)") + return out + + # 1B) SIGINT (Ctrl-C equivalent) + try: + if cname: + out.append(f"(interrupt) sending SIGINT to container {cname}") + else: + out.append("(interrupt) sending SIGINT to host docker client process") + docker_sig("INT") + except Exception as e: + out.append(f"(interrupt) SIGINT failed: {e!r}") + + out.extend(wait_for_stop(timeout=1.2)) + if saw("*stopped", out) or saw("=thread-group-exited", out): + out.append("(interrupt) success: inferior stopped/exited after SIGINT") + return out + + # If gdb died as a side effect, we're done (container will exit with it). + if not host_alive(): + out.append("(interrupt) session exited unexpectedly during interrupt attempts") + return out + + # --- Phase 2: Kill the inferior (keep gdb if possible) --- + + # MI/console "kill" is the usual way to kill the inferior while keeping gdb alive. + # (MI has -exec-abort too, but console kill is widely supported.) + try: + out.append('(interrupt) trying to kill inferior: -interpreter-exec console "kill"') + write_stdin('-interpreter-exec console "kill"\n') + except Exception as e: + out.append(f"(interrupt) kill-inferior write failed: {e!r}") + + # After killing, you may see =thread-group-exited, or a *stopped. + out.extend(wait_for_stop(timeout=1.0)) + if saw("=thread-group-exited", out) or saw("*stopped", out): + out.append("(interrupt) recovered: inferior killed/stopped; gdb should still be alive") + return out + + # --- Phase 3: Escalate to tearing down the whole container/session --- + # If we can't get a stop record and kill didn't work, it's likely wedged. + # Since you said: if it has to exit gdb, may as well kill the container too, + # we hard-reset the container now. + + if cname: + out.append(f"(interrupt) hard reset: docker rm -f {cname}") + try: + self._docker(["rm", "-f", cname]) + except Exception as e: + out.append(f"(interrupt) docker rm -f failed: {e!r}") + out.extend(drain_for(0.8)) + return out + return out diff --git a/seed-gen/src/buttercup/seed_gen/prompt/debug.py b/seed-gen/src/buttercup/seed_gen/prompt/debug.py new file mode 100644 index 00000000..5b101bef --- /dev/null +++ b/seed-gen/src/buttercup/seed_gen/prompt/debug.py @@ -0,0 +1,419 @@ +# ruff: noqa: E501 +DEBUG_GET_CONTEXT_SYSTEM_PROMPT = """ +You are an expert debugger and security engineer. Your job is to gather relevant context about the codebase to help understand how a proof-of-vulnerability (PoV) input will execute. + +You are given a proof-of-vulnerability (PoV) input and a harness function that processes it. +To test the vuln, the input has been run against various sanitizers, but the binary you are using does not have these sanitizers (since they were confirmed not to trigger) + +You have access to tools that let you: +- Get function definitions +- Get type definitions +- Read file contents +- Get callers of functions +- Grep for text in files +- Batch multiple tool calls +- **Look up function symbols in the binary** (lookup_symbols) - use this to find actual symbol names when functions might be mangled or modified by compiler. Can look up multiple patterns at once (up to 20) + +Use these tools to gather context about: +- The harness function and how it processes input +- Functions mentioned in the vulnerability analysis +- Code paths that the PoV input should trigger +- Variables and data structures relevant to exploitation +- Validation checks and bounds that might affect exploitation +- Ensure you get the actual symbol names for any functions that may be needed to debug the PoV (if you want to set a breakpoint on a function, get its real name). + +Focus on gathering information that will help understand: +1. How the input flows through the program +2. What functions should be called for successful exploitation +3. What values variables should have at specific points +4. What conditions must be met for the vulnerability to trigger +""" + +DEBUG_GET_CONTEXT_USER_PROMPT = """ +The test harness is: +{harness} + +The debugging context/instructions are: +{debug_context} + +Retrieved context so far: + +{retrieved_context} + + +{prev_debug_attempt} + +Use the available tools to gather more context about the codebase that will help with debugging. +Focus on understanding the code paths, functions, and variables relevant to understanding how this PoV will execute. +Note that some symbol names, especially function names, may not be available or may be modified by the compiler, so use the line numbers from the CodeSnippet objects in the retrieved context to determine these. +""" + +DEBUG_ANALYZE_SYSTEM_PROMPT = """ +You are an expert debugger and security engineer. Your job is to analyze a PoV that has just been generated and plan how to create a GDB debug script to proactively investigate how it will execute. + +You will be given: +- A harness function that processes input +- A PoV input file (the actual input bytes, not a script) +- The vulnerability analysis that led to creating this PoV +- Debugging context specifying what to investigate + +Your analysis should: +1. Understand what the PoV is trying to exploit based on the analysis +2. Identify critical points to monitor (function calls, variable values, memory states, validation checks) +3. Plan what GDB commands will verify the PoV is working as intended +4. Consider what might prevent successful exploitation and how to detect it + + +""" + +DEBUG_ANALYZE_USER_PROMPT = """ +The test harness is: +{harness} + +The PoV input file: +- Path: {pov_path} +- Size: {pov_size} bytes + + +The debugging context/instructions are: +{debug_context} + +Retrieved context about the codebase: + +{retrieved_context} + + +Previous debug attempts (if any): + +{previous_attempts} + + +Analyze the debugging task: +1. What vulnerability is the PoV trying to exploit based on the analysis? +2. What code paths should be executed for successful exploitation? +3. What specific information needs to be monitored (function calls, variable values, memory states, validation checks)? +4. What GDB commands will verify the PoV is executing as intended? +5. What conditions might prevent exploitation and how can we detect them? + +Provide a clear analysis that will guide the creation of a proactive GDB debug script. Be no more verbose than necessary to understand the strategy. +""" + +DEBUG_WRITE_SCRIPT_SYSTEM_PROMPT = """ +You are an expert GDB debugger. Your job is to write a GDB debug script that will proactively investigate how a proof-of-vulnerability (PoV) input executes BEFORE we test whether it crashes. + +The script will be run with: +``` +gdb -batch -x