invalid result reference when consuming results from dynamic matrix

[t1bb4r]

Expected Behavior

Expect validation to pass and tasks to run.

Actual Behavior

Reconciliation error is preventing the pipeline from executing.

Steps to Reproduce the Problem

1. Create a pipeline with tasks that use a dynamic matrix

kubectl create -f - <<'EOF'
apiVersion: tekton.dev/v1
kind: PipelineRun
metadata:
  generateName: matrix-test-
spec:
  params:
  - name: users
    value:
    - john
    - pete
  pipelineSpec:
    tasks:
    - name: generate-array
      taskSpec:
        results:
        - name: some-array
          type: array
        steps:
        - image: bash
          script: |
            echo -n "[\"john\", \"pete\"]" | tee $(results.some-array.path)
    - name: dynamic-matrix
      matrix:
        params:
        - name: user
          #value: $(params.users) # This works
          value: $(tasks.generate-array.results.some-array[*]) # This does not work
      taskSpec:
        params:
        - name: user
        results:
        - name: email
        steps:
        - image: bash
          script: |
            echo -n "$(params.user)@example.com" | tee $(results.email.path)
    - name: echo-matrix # echo results
      runAfter: ['dynamic-matrix']
      taskSpec:
        params:
        - name: emails
          type: array
        steps:
        - image: bash
          script: |
            echo "testing"
      params:
      - name: emails
        value: $(tasks.dynamic-matrix.results.email[*])
EOF

2. See error in tekton pipeline controller

{"severity":"error","timestamp":"2024-04-29T16:56:14.456Z","logger":"tekton-pipelines-controller","caller":"pipelinerun/pipelinerun.go:696","message":"Failed to resolve task result reference for \"matrix-test-9g
2bz\" with error invalid result reference in pipeline task \"echo-matrix\": unable to validate result referencing pipeline task \"dynamic-matrix\": task spec not found","commit":"34d8c0f"
...

Additional Info

• Kubernetes version:

  Output of kubectl version:

Client Version: v1.28.4
Server Version: v1.28.3

• Tekton Pipeline version:

  Output of tkn version or kubectl get pods -n tekton-pipelines -l app=tekton-pipelines-controller -o=jsonpath='{.items[0].metadata.labels.version}'

v0.59.0