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feat: Implement DSLLVM General-Purpose Fuzzing Foundation
Co-authored-by: intel <[email protected]>
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‎dsmil/DSMIL-GENERAL-FUZZING-FOUNDATION-COMPLETE.md‎

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‎dsmil/DSMIL-GENERAL-FUZZING-SUMMARY.md‎

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# DSLLVM General-Purpose Fuzzing Foundation Summary
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## Overview
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The DSLLVM General-Purpose Fuzzing Foundation is a **target-agnostic** fuzzing infrastructure that can be applied to **any** codebase, not just crypto/TLS. It provides a complete foundation for advanced next-generation fuzzing techniques.
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## Generalization Changes
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### Renamed Components
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- `dsssl_*` → `dsmil_fuzz_*` (general-purpose naming)
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- `DSSSL_*` → `DSMIL_FUZZ_*` (attribute macros)
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- `Dsssl*Pass` → `DsmilFuzz*Pass` (LLVM passes)
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### Generic APIs
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All APIs are now target-agnostic:
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- `dsmil_fuzz_cov_hit()` - Works for any coverage site
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- `dsmil_fuzz_state_transition()` - Works for any state machine
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- `dsmil_fuzz_metric_record()` - Works for any operation
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- `dsmil_fuzz_api_misuse_report()` - Works for any API
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### Flexible Configuration
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Configuration supports any target type:
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- **generic** - Any codebase
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- **protocol** - Network protocols
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- **parser** - Text/binary parsers
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- **api** - Library APIs
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## Components
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### 1. General-Purpose Attributes
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**File**: `dsmil/include/dsmil_fuzz_attributes.h`
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- `DSMIL_FUZZ_COVERAGE` - Coverage tracking
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- `DSMIL_FUZZ_ENTRY_POINT` - Mark primary targets
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- `DSMIL_FUZZ_STATE_MACHINE(name)` - State machines
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- `DSMIL_FUZZ_CRITICAL_OP(name)` - Operation metrics
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- `DSMIL_FUZZ_API_MISUSE_CHECK(name)` - API misuse
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- `DSMIL_FUZZ_CONSTANT_TIME_LOOP` - Constant-time loops
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### 2. General Runtime API
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**File**: `dsmil/include/dsmil_fuzz_telemetry.h`
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Target-agnostic telemetry API for any fuzzing scenario.
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### 3. Advanced Runtime API
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**File**: `dsmil/include/dsmil_fuzz_telemetry_advanced.h`
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Advanced features:
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- Performance counters
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- Coverage maps
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- ML integration
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- Distributed fuzzing
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### 4. LLVM Passes
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**File**: `dsmil/lib/Passes/DsmilFuzzCoveragePass.cpp`
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General-purpose instrumentation pass that works for any target.
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### 5. Harness Generator
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**File**: `dsmil/tools/dsmil-gen-fuzz-harness/dsmil-gen-fuzz-harness.cpp`
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Generates harnesses for:
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- Generic targets
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- Protocol targets
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- Parser targets
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- API targets
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### 6. Runtime Implementation
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**File**: `dsmil/runtime/dsmil_fuzz_telemetry.c`
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General-purpose telemetry runtime.
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## Use Cases
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### HTTP Parser
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```c
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DSMIL_FUZZ_STATE_MACHINE("http_parser")
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DSMIL_FUZZ_COVERAGE
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int http_parse(const uint8_t *data, size_t len);
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```
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### JSON Parser
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```c
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DSMIL_FUZZ_CRITICAL_OP("json_parse")
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DSMIL_FUZZ_COVERAGE
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int json_parse(const char *json);
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```
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### Network Protocol
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```c
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DSMIL_FUZZ_STATE_MACHINE("protocol_sm")
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DSMIL_FUZZ_COVERAGE
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int process_protocol(const uint8_t *msg, size_t len);
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```
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### File Format
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```c
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DSMIL_FUZZ_ENTRY_POINT
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DSMIL_FUZZ_COVERAGE
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int parse_format(const uint8_t *data, size_t len);
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```
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### Kernel Driver
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```c
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DSMIL_FUZZ_ENTRY_POINT
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DSMIL_FUZZ_API_MISUSE_CHECK("ioctl")
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int driver_ioctl(unsigned long cmd, void *arg);
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```
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## Files Created
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### Headers
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- `dsmil/include/dsmil_fuzz_telemetry.h`
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- `dsmil/include/dsmil_fuzz_telemetry_advanced.h`
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- `dsmil/include/dsmil_fuzz_attributes.h`
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### Passes
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- `dsmil/lib/Passes/DsmilFuzzCoveragePass.cpp`
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### Runtime
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- `dsmil/runtime/dsmil_fuzz_telemetry.c`
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- `dsmil/runtime/dsmil_fuzz_telemetry_advanced.c` (from previous)
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### Tools
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- `dsmil/tools/dsmil-gen-fuzz-harness/dsmil-gen-fuzz-harness.cpp`
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### Configs
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- `dsmil/config/fuzz_telemetry_generic.yaml`
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- `dsmil/config/fuzz_target_http_parser.yaml`
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- `dsmil/config/fuzz_target_json_parser.yaml`
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### Examples
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- `dsmil/examples/generic_fuzz_example.c`
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### Docs
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- `dsmil/docs/DSMIL-GENERAL-FUZZING-GUIDE.md`
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- `dsmil/docs/DSMIL-GENERAL-FUZZING-QUICKREF.md`
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## Key Features
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✅ **Target-Agnostic** - Works for any codebase
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✅ **Advanced Techniques** - Grammar, ML, structure-aware
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✅ **Rich Telemetry** - Coverage, performance, security
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✅ **High Performance** - Optimized for 1+ petaops
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✅ **Distributed** - Multi-worker support
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✅ **Flexible** - Configurable for any use case
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## Migration from DSSSL-Specific
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If you have DSSSL-specific code:
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1. Replace `dsssl_*` with `dsmil_fuzz_*`
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2. Replace `DSSSL_*` attributes with `DSMIL_FUZZ_*`
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3. Update config files to use generic format
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4. Regenerate harnesses with generic generator
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## Summary
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The foundation is now **completely general-purpose** and can be used for:
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- **Any protocol** (HTTP, FTP, SMTP, custom)
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- **Any parser** (JSON, XML, binary formats)
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- **Any API** (libraries, kernels, drivers)
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- **Any codebase** (with appropriate annotations)
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All advanced features (grammar-based, ML-guided, distributed, etc.) work for any target type.

‎dsmil/config/fuzz_target_http_parser.yaml‎

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# HTTP Parser Fuzzing Configuration
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target:
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name: "http_parser"
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type: "parser"
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input_format: "text"
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max_input_size: 65536
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enable_structure_aware: true
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enable_dictionary: true
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dictionary:
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- "GET"
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- "POST"
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- "PUT"
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- "DELETE"
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- "HTTP/1.1"
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- "HTTP/1.0"
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- "Content-Length"
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- "Content-Type"
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- "Host"
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enable_grammar_fuzzing: true
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grammar_file: "http_grammar.bnf"

‎dsmil/config/fuzz_target_json_parser.yaml‎

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# JSON Parser Fuzzing Configuration
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target:
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name: "json_parser"
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type: "parser"
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input_format: "text"
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max_input_size: 1048576
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enable_structure_aware: true
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enable_grammar_fuzzing: true
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grammar_file: "json_grammar.bnf"
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enable_dictionary: true
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dictionary:
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- "{"
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- "}"
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- "["
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- "]"
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- "\""
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- "null"
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- "true"
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- "false"

‎dsmil/config/fuzz_telemetry_generic.yaml‎

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# DSLLVM General-Purpose Fuzzing & Telemetry Configuration
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# Generic configuration template for any fuzzing target
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# Target configuration
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target:
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name: "generic_target"
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type: "generic" # generic, protocol, parser, api, etc.
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input_format: "binary" # binary, text, structured
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max_input_size: 1048576 # 1MB default
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# Advanced fuzzing techniques
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enable_grammar_fuzzing: false
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grammar_file: ""
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enable_structure_aware: false
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enable_ml_guided: false
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ml_model_path: ""
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enable_dictionary: false
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dictionary: []
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# Distributed fuzzing
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enable_distributed: false
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worker_id: 0
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num_workers: 1
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# Performance
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enable_perf_counters: false
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# Target-specific options (key-value pairs)
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options: {}
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# Operation budgets (for critical operations)
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operation_budgets:
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default:
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max_branches: 10000
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max_loads: 50000
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max_stores: 25000
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max_delta_cycles: 5000
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# API misuse policies
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api_misuse_policies:
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buffer_write:
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check_bounds: true
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check_null: true
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abort_on_violation: false
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memory_alloc:
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check_size: true
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check_overflow: true
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abort_on_violation: true
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# Telemetry settings
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telemetry:
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ring_buffer_size: 1048576 # 1MB
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flush_on_exit: true
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output_file: "fuzz_telemetry.bin"
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enable_timing: false
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enable_perf_counters: false
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enable_ml_integration: false
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# Compression
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compress_output: true
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compression_level: 6
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# Export formats
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export_formats:
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- "json"
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- "protobuf"
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# State machine budgets
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state_machine_budgets:
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default:
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max_transitions: 100
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max_depth: 20
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# Mutation strategies
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mutation_strategies:
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bit_flip:
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enabled: true
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probability: 0.3
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byte_insert:
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enabled: true
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probability: 0.2
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byte_delete:
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enabled: true
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probability: 0.2
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crossover:
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enabled: true
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probability: 0.1
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dictionary_insert:
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enabled: true
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probability: 0.1
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ml_guided:
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enabled: false
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probability: 0.1
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# Coverage feedback
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coverage_feedback:
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interestingness_threshold: 0.7
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use_ml_scoring: false
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coverage_map_size: 1048576
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edge_map_size: 524288
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state_map_size: 65536
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feedback_interval: 1000
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# Performance optimization
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performance:
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enable_parallel: false
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num_threads: 1
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enable_batch: false
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batch_size: 1000
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preallocate_buffers: true
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buffer_size: 1048576

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