setup-buildx-action hangs with 99% CPU when running on latest Github Action Runner v2.285.0

Behaviour

Our runners were auto-updated this morning from v2.284.0 to v2.285.0 and began to hang on the Download and Install Buildx step:

Steps to reproduce this issue

1. Upgrade your runner to version v2.285.0
2. Run the docker/setup-buildx-action@v1 in your workflow
3. You should see heavy CPU utilization that did not exist in v2.284.0

Expected behaviour

The step should complete in under 10s per our typical experience

Actual behaviour

The step is hanging indefinitely

Configuration

• Repository URL (if public): private
• Build URL (if public): private

Note: all steps prior to the failing step pass as expected

name: Test Environment

on:
  pull_request:
    types: [labeled, reopened, synchronize, ready_for_review]
  workflow_dispatch:

env:
  HEAD_SHA: ${{ github.event.pull_request.head.sha }}

jobs:
  build:
    name: Build Image
    runs-on: self-hosted
    steps:
      - name: Set outputs
        id: vars
        run: |
          echo "::set-output name=head_sha::$(echo $PR_HEAD_SHA | cut -c1-7)"
        env:
          PR_HEAD_SHA: ${{ env.HEAD_SHA }}

      - name: Login to DockerHub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}

      - name: Configure AWS Credentials
        uses: aws-actions/configure-aws-credentials@v1
        with:
          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
          aws-region: redacted
          role-to-assume: redacted

      - name: Login to Amazon ECR
        id: login-ecr
        uses: aws-actions/amazon-ecr-login@v1

      - name: Set up Docker Context for Buildx
        id: buildx-context
        run: |
          docker context create test-builder

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v1
        with:
          endpoint: test-builder

      - name: Build and push Docker images
        uses: docker/build-push-action@v2.7.0

Logs

Download the log file of your build and attach it to this issue.

Our logs are littered with private, implementation details. Could you help me isolate which part of the logs you need for diagnosis?

2021-12-01T19:25:54.2902593Z Found online and idle self-hosted runner in the  current repository's enterprise account that matches the required labels: 'self-hosted'
2021-12-01T19:25:54.4048239Z Waiting for the runner to pick up this job...
2021-12-01T19:26:54.7363687Z Job was not picked up by the preferred runner, try requesting additional runners to run this job
2021-12-01T19:26:54.8282602Z Waiting for a self-hosted runner to pickup this job...
2021-12-01T19:32:40.3175224Z Job is about to start running on the runner: self-hosted-runner-group-6zjgq-67xpv (enterprise)
2021-12-01T19:32:44.8744015Z Current runner version: '2.285.0'
2021-12-01T19:32:44.8753670Z Runner name: 'self-hosted-runner-group-6zjgq-67xpv'
2021-12-01T19:32:44.8755541Z Runner group name: 'self-hosted'
2021-12-01T19:32:44.8758083Z Machine name: 'self-hosted-runner-group-6zjgq-67xpv'
...
2021-12-01T19:32:49.5211515Z ##[group]Download and install buildx
2021-12-01T19:32:49.5825561Z Downloading https://github.com/docker/buildx/releases/download/v0.7.1/buildx-v0.7.1.linux-amd64
2021-12-01T20:12:24.6445002Z ##[error]The operation was canceled.
2021-12-01T20:12:24.6564749Z Post job cleanup.
2021-12-01T20:12:24.7568406Z Post job cleanup.
2021-12-01T20:12:24.9055991Z Post job cleanup.
2021-12-01T20:12:24.9780442Z Post job cleanup.
2021-12-01T20:12:25.0473555Z [command]/usr/local/bin/docker logout 
2021-12-01T20:12:25.1428510Z Removing login credentials for https://index.docker.io/v1/
2021-12-01T20:12:25.1518891Z Cleaning up orphan processes

[afritzler]

OK, what solved the issue for us was pinning the version to 287.1 and disabling the auto update of the runner:

image: ghcr.io/actions-runner-controller/actions-runner-controller/actions-runner:v2.287.1-ubuntu-20.04
env:
  # Disables automatic runner updates
  - name: DISABLE_RUNNER_UPDATE
    value: "true"

[jnsvd]

@crazy-max If we add the extra Install Docker Buildx step the pipeline finished successfully.