syz-extract-constants SKILL.md skillA
syz-extract-constants from benchflow-ai/benchflow is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add benchflow-ai/benchflow/syz-extract-constants@git:20260610.e2a435fPins git:20260610.e2a435f in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- benchflow-ai/benchflow
- Path
tests/fixtures/skillsbench_slice/syzkaller-ppdev-syzlang/environment/skills/syz-extract-constants/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260610.e2a435f, committed Jun 10, 2026
- Size
- 3,136 bytes
- Repository stars
- 359
- License
- Apache-2.0
Defining and extracting kernel constants for syzkaller syzlang descriptions.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Defining Constants in Syzlang ## Overview Syzkaller needs to know the actual values of kernel constants (ioctl numbers, flags, etc.) to generate valid fuzzing programs. There are two ways to provide these values: 1. **Manual `.const` file** - Define constants directly in a companion file 2. **`syz-extract` tool** - Extract values from kernel source headers (requires kernel source) ## Method 1: Manual Constants File (Recommended when no kernel source) Create a `.const` file alongside your `.txt` file with the constant values: ### File naming - Syzlang description: `sys/linux/dev_ppdev.txt` - Constants file: `sys/linux/dev_ppdev.txt.const` ### Constants file format ``` # Constants for your syzlang descriptions arches = 386, amd64, arm, arm64, mips64le, ppc64le, riscv64, s390x PPCLAIM = 28811 PPRELEASE = 28812 IEEE1284_MODE_NIBBLE = 0 IEEE1284_MODE_BYTE = 1 ``` The `arches` line declares which architectures these constants are valid for. For architecture-independent constants (like ioctls), list all architectures. ### Calculating ioctl values Linux ioctl numbers are encoded as: - `_IO(type, nr)` = `(type << 8) | nr` …
Read the whole file at its exact version.
How to install
mdr add benchflow-ai/benchflow/syz-extract-constants@sha256:2fc1affd7993d5e0The line at the top of this page pins the label git:20260610.e2a435f, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_t3nrdq5n2piuny4q)
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Versions
The registry has recorded 1 version of this file, committed on Jun 10, 2026.
Audit of the latest version
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- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
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- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
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- pass: No link to a raw IP address
- pass: No script tag
Source
benchflow-ai/benchflow · 359 stars · license Apache-2.0 · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_t3nrdq5n2piuny4q GET https://markdownregistry.com/api/v1/resolve?ref=benchflow-ai/benchflow/syz-extract-constants GET https://markdownregistry.com/api/v1/blob/2fc1affd7993d5e0223033fdb8083cd26601994d4686b4e49feca7d83cc1a733
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