crash-triage-reference SKILL.md skillA

crash-triage-reference from testland/qa is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add testland/qa/crash-triage-reference@git:20261011.a1bd3f7

Pins git:20261011.a1bd3f7 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
testland/qa
Path
plugins/qa-fuzz-testing/skills/crash-triage-reference/SKILL.md
Versions recorded
5
Latest version
git:20261011.a1bd3f7, committed Oct 11, 2026
First version recorded
Jul 6, 2026
Size
17,084 bytes
Repository stars
11
License
MIT

Reference catalog for triaging fuzzer crash artifacts - reading ASan, UBSan, and MSan output; classifying findings as LIKELY-EXPLOITABLE, MEDIUM, or BENIGN; deduplicating by stack-hash; minimizing reproducers with -minimize_crash; plus the bulk triage workflow for a full artifact directory (inventory, reproduce, classify, dedupe, BLOCK/PASS verdict with refuse-to-proceed rules and a report template). Use when you need to understand what a specific crash means, build exploitability intuition…

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

# crash-triage-reference

## Overview

Pure-reference catalog for working with fuzzer crash artifacts produced by
libFuzzer, AFL++, or cargo-fuzz campaigns using clang sanitisers. Covers
reading crash output from ASan, UBSan, and MSan; distinguishing
LIKELY-EXPLOITABLE from BENIGN findings; collapsing duplicates by stack-hash;
and minimizing reproducers. The "Bulk triage workflow" section applies these
steps across a full artifact directory and ends in a BLOCK / PASS verdict.
For sanitiser build flags and compatibility, see the sanitizer-integration
reference in the sibling `coverage-guided-fuzzing` skill.

## When to use

- Reading a raw ASan / UBSan / MSan crash report and identifying the bug class.
- Deciding whether a finding blocks a release (LIKELY-EXPLOITABLE) or is a
  lower-priority issue (MEDIUM or BENIGN).
- Collapsing 20 crash artifacts into N unique bugs before filing tickets.
- Reducing a crash input to its minimal reproducer before attaching it to a bug.
- Triaging a whole campaign's artifact directory into a release verdict
  (see "Bulk triage workflow").

## Reading ASan crash output

AddressSanitizer (per
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add testland/qa/crash-triage-reference@sha256:d301022a256cba7a

The line at the top of this page pins the label git:20261011.a1bd3f7, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_d67gt6ghtvogg6qy.svg)](https://markdownregistry.com/a/art_d67gt6ghtvogg6qy)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Jul 6, 2026 and Oct 11, 2026, about one every 24 days.

versioncommittedcommitsizeaudit
git:20261011.a1bd3f7 latest2026-10-11 a1bd3f7 17,084 BA view · diff
git:20260813.273135d2026-08-13 273135d 17,076 BA view · diff
git:20260724.d4db7562026-07-24 d4db756 14,047 BA view · diff
git:20260718.ab299072026-07-18 ab29907 14,231 BA view · diff
git:20260706.4e1409c2026-07-06 4e1409c 14,375 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (17084 bytes)
  • 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
  • pass: No text hidden with inline styles
  • 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
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

testland/qa · 11 stars · license MIT · pushed 2026-10-20 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_d67gt6ghtvogg6qy
GET https://markdownregistry.com/api/v1/resolve?ref=testland/qa/crash-triage-reference
GET https://markdownregistry.com/api/v1/blob/d301022a256cba7a8c07a070651d00d7f7949f11ab854f7ee07720379de7b555

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

More from testland/qa

CLAUDE.md CLAUDE.md file
testland/qa · CLAUDE.md
git:20261011.164aa71 · audit A · 11 stars
a11y-violation-gate SKILL.md skill
testland/qa · plugins/qa-accessibility/skills/a11y-violation-gate/SKILL.md · Builds a CI gate that fails the build on **new** WCAG / a11y violations introduced by a PR while grandfathering…
git:20260813.84b37f4 · audit A · 11 stars
aria-authoring-patterns SKILL.md skill
testland/qa · plugins/qa-accessibility/skills/aria-authoring-patterns/SKILL.md · Reference for the W3C ARIA Authoring Practices Guide (APG) - covers the 31 canonical interactive-widget patterns…
git:20260813.84b37f4 · audit A · 11 stars
axe-a11y SKILL.md skill
testland/qa · plugins/qa-accessibility/skills/axe-a11y/SKILL.md · Automated accessibility scanning across the five engines - axe-core (primary), pa11y, Lighthouse a11y, WAVE, and IBM…
git:20260813.84b37f4 · audit B · 11 stars
screen-reader-test-author SKILL.md skill
testland/qa · plugins/qa-accessibility/skills/screen-reader-test-author/SKILL.md · Builds the full manual-accessibility artifact surface: step-by-step screen-reader test scripts for NVDA (Windows), JAWS…
git:20260813.84b37f4 · audit A · 11 stars
wcag-color-contrast SKILL.md skill
testland/qa · plugins/qa-accessibility/skills/wcag-color-contrast/SKILL.md · Reference for WCAG 2.2 color-contrast conformance - covers SC 1.4.3 Contrast (Minimum, AA), 1.4.6 Contrast (Enhanced…
git:20260813.84b37f4 · audit A · 11 stars
wcag-compliance-reporter SKILL.md skill
testland/qa · plugins/qa-accessibility/skills/wcag-compliance-reporter/SKILL.md · Builds a per-page WCAG 2.2 compliance score report by aggregating output from one or more accessibility scanners…
git:20260813.84b37f4 · audit A · 11 stars
wcag-keyboard-navigation SKILL.md skill
testland/qa · plugins/qa-accessibility/skills/wcag-keyboard-navigation/SKILL.md · Reference catalog for WCAG 2.2 keyboard-navigation conformance - covers SC 2.1.1 (Keyboard), 2.1.2 (No Keyboard Trap)…
git:20260813.84b37f4 · audit A · 11 stars
ai-spec-coverage-mapper SKILL.md skill
testland/qa · plugins/qa-ai-assisted/skills/ai-spec-coverage-mapper/SKILL.md · Build-an-X workflow that uses an LLM to map existing tests to spec sections - given a spec doc + the test suite, the…
git:20260813.83125c6 · audit A · 11 stars
ai-test-generator SKILL.md skill
testland/qa · plugins/qa-ai-assisted/skills/ai-test-generator/SKILL.md · Generates tests from natural-language specs (acceptance criteria, user stories, requirements) using an LLM, with…
git:20260813.83125c6 · audit A · 11 stars
model-based-test-graph-author SKILL.md skill
testland/qa · plugins/qa-ai-assisted/skills/model-based-test-graph-author/SKILL.md · Build-an-X workflow for model-based testing (MBT) per the canonical definition - authors a state-machine model of the…
git:20260813.099f6f5 · audit A · 11 stars
api-chaos-runner SKILL.md skill
testland/qa · plugins/qa-api-testing/skills/api-chaos-runner/SKILL.md · Runs the project's existing API tests under injected network chaos - latency, timeouts, dropped connections, bandwidth…
git:20260726.19ddd36 · audit A · 11 stars

Every file in testland/qa

Browse by kind, by grade A, or by owner.