windbg-kernel-lock-deadlock-triage SKILL.md skillA

windbg-kernel-lock-deadlock-triage from microsoft/win-dev-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add microsoft/win-dev-skills/windbg-kernel-lock-deadlock-triage@git:20261007.790b577

Pins git:20261007.790b577 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
microsoft/win-dev-skills
Path
plugins/windbg/skills/windbg-kernel-lock-deadlock-triage/SKILL.md
Versions recorded
2
Latest version
git:20261007.790b577, committed Oct 7, 2026
First version recorded
Oct 7, 2026
Size
4,297 bytes
Repository stars
475
License
MIT

Use when kernel threads block on driver synchronization or Verifier reports a lock-order violation; build an owner/waiter graph. Not for treating every watchdog stop as a deadlock or listing every lock type with !locks.

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

# Kernel Lock and Deadlock Triage

**Load `windbg-diagnostic-method` first** if it is not already loaded in this
conversation, and apply it throughout for evidence ranking, hypothesis testing,
confidence calibration, independent review, and report validation. This skill
adds the bug-family-specific commands and evidence requirements.

## Detection

Use kernel thread stacks, synchronization-object evidence, and Driver Verifier
deadlock records. A watchdog bugcheck can indicate CPU/DPC progress failures,
not necessarily a lock cycle. Establish the actual waits before choosing this
workflow.

## Workflow

### 1. Gather owners and waiters

```text
!locks
!thread <ethread-address>
!process 0 7
```

`!locks` enumerates ERESOURCE information. It is not an inventory of all
pushlocks, fast mutexes, and spinlocks. For other primitives use documented
primitive-specific inspection when available, matching symbols for your
driver, its source, and recorded acquisition evidence. State missing owners
explicitly.

### 2. Inspect recorded lock-order evidence

If Driver Verifier deadlock detection was enabled and the dump contains its
records:

```text
!deadlock 1
```
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add microsoft/win-dev-skills/windbg-kernel-lock-deadlock-triage@sha256:0cd98bdb7c961649

The line at the top of this page pins the label git:20261007.790b577, 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_g563l32wnutj6os6.svg)](https://markdownregistry.com/a/art_g563l32wnutj6os6)

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

Versions

The registry has recorded 2 versions of this file, all committed on Oct 7, 2026.

versioncommittedcommitsizeaudit
git:20261007.790b577 latest2026-10-07 790b577 4,297 BA view · diff
git:20261007.e1050cd2026-10-07 e1050cd 4,168 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 (4297 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

microsoft/win-dev-skills · 475 stars · license MIT · pushed 2026-10-19 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_g563l32wnutj6os6
GET https://markdownregistry.com/api/v1/resolve?ref=microsoft/win-dev-skills/windbg-kernel-lock-deadlock-triage
GET https://markdownregistry.com/api/v1/blob/0cd98bdb7c961649718be26dba162685e42752b1feaa78bc18080a25d46c5456

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.

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