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chore: fix 'false positive' data race detection in Id/Number default init (#867)

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A step's `Id` & `Number` are potentially initialized in different goroutines on matrix evaluations; this change ensures they're initialized before execution fans out to multiple goroutines.  There doesn't seem to be any functional impact of this data race for end-users.

Where `Number` was previously initialized, a runtime error was added to ensure that the behavior is the same.

`ID` data race:
```
==================
WARNING: DATA RACE
Read at 0x00c0001ff348 by goroutine 77:
  code.forgejo.org/forgejo/runner/v9/act/runner.newJobExecutor()
      /.../forgejo-runner/act/runner/job_executor.go:64 +0x424
  code.forgejo.org/forgejo/runner/v9/act/runner.(*RunContext).Executor()
      /.../forgejo-runner/act/runner/run_context.go:931 +0x2c6
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.1()
      /.../forgejo-runner/act/runner/runner.go:218 +0x150
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.2.1()
      /.../forgejo-runner/act/common/executor.go:107 +0x61
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.2.gowrap1()
      /.../forgejo-runner/act/common/executor.go:109 +0x4f

Previous write at 0x00c0001ff348 by goroutine 76:
  code.forgejo.org/forgejo/runner/v9/act/runner.newJobExecutor()
      /.../forgejo-runner/act/runner/job_executor.go:65 +0x4cc
  code.forgejo.org/forgejo/runner/v9/act/runner.(*RunContext).Executor()
      /.../forgejo-runner/act/runner/run_context.go:931 +0x2c6
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.1()
      /.../forgejo-runner/act/runner/runner.go:218 +0x150
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.2.1()
      /.../forgejo-runner/act/common/executor.go:107 +0x61
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.2.gowrap1()
      /.../forgejo-runner/act/common/executor.go:109 +0x4f

Goroutine 77 (running) created at:
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.2()
      /.../forgejo-runner/act/common/executor.go:105 +0x144
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.3.1()
      /.../forgejo-runner/act/common/executor.go:107 +0x61
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.3.gowrap1()
      /.../forgejo-runner/act/common/executor.go:109 +0x4f

Goroutine 76 (running) created at:
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.2()
      /.../forgejo-runner/act/common/executor.go:105 +0x144
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.3.1()
      /.../forgejo-runner/act/common/executor.go:107 +0x61
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.3.gowrap1()
      /.../forgejo-runner/act/common/executor.go:109 +0x4f
==================
```

`Number` data race:
```
==================
WARNING: DATA RACE
Write at 0x00c0001ff340 by goroutine 77:
  code.forgejo.org/forgejo/runner/v9/act/runner.newJobExecutor()
      /.../forgejo-runner/act/runner/job_executor.go:67 +0x536
  code.forgejo.org/forgejo/runner/v9/act/runner.(*RunContext).Executor()
      /.../forgejo-runner/act/runner/run_context.go:931 +0x2c6
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.1()
      /.../forgejo-runner/act/runner/runner.go:218 +0x150
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.2.1()
      /.../forgejo-runner/act/common/executor.go:107 +0x61
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.2.gowrap1()
      /.../forgejo-runner/act/common/executor.go:109 +0x4f

Previous write at 0x00c0001ff340 by goroutine 76:
  code.forgejo.org/forgejo/runner/v9/act/runner.newJobExecutor()
      /.../forgejo-runner/act/runner/job_executor.go:67 +0x536
  code.forgejo.org/forgejo/runner/v9/act/runner.(*RunContext).Executor()
      /.../forgejo-runner/act/runner/run_context.go:931 +0x2c6
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.1()
      /.../forgejo-runner/act/runner/runner.go:218 +0x150
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.2.1()
      /.../forgejo-runner/act/common/executor.go:107 +0x61
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.2.gowrap1()
      /.../forgejo-runner/act/common/executor.go:109 +0x4f

Goroutine 77 (running) created at:
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.2()
      /.../forgejo-runner/act/common/executor.go:105 +0x144
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.3.1()
      /.../forgejo-runner/act/common/executor.go:107 +0x61
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.3.gowrap1()
      /.../forgejo-runner/act/common/executor.go:109 +0x4f

Goroutine 76 (running) created at:
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.2()
      /.../forgejo-runner/act/common/executor.go:105 +0x144
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.3.1()
      /.../forgejo-runner/act/common/executor.go:107 +0x61
  code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.NewParallelExecutor.3.gowrap1()
      /.../forgejo-runner/act/common/executor.go:109 +0x4f
==================
```

<!--start release-notes-assistant-->
<!--URL:https://code.forgejo.org/forgejo/runner-->
- other
  - [PR](https://code.forgejo.org/forgejo/runner/pulls/867): <!--number 867 --><!--line 0 --><!--description Y2hvcmU6IGZpeCAnZmFsc2UgcG9zaXRpdmUnIGRhdGEgcmFjZSBkZXRlY3Rpb24gaW4gSWQvTnVtYmVyIGRlZmF1bHQgaW5pdA==-->chore: fix 'false positive' data race detection in Id/Number default init<!--description-->
<!--end release-notes-assistant-->

Reviewed-on: https://code.forgejo.org/forgejo/runner/pulls/867
Co-authored-by: Mathieu Fenniak <mathieu@fenniak.net>
Co-committed-by: Mathieu Fenniak <mathieu@fenniak.net>
This commit is contained in:
Mathieu Fenniak 2025-08-20 19:56:03 +00:00 • committed by earl-warren
parent 91e7940947
commit ce6502e7b6
No known key found for this signature in database
GPG key ID: F128CBE6AB3A7201
5 changed files with 51 additions and 19 deletions
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9
act/runner/job_executor_test.go
View file

@ -209,11 +209,14 @@ func TestJobExecutorNewJobExecutor(t *testing.T) {
{
name: "stepsWithPreAndPost",
steps: []*model.Step{{
ID: "1",
ID: "1",
Number: 0,
}, {
ID: "2",
ID: "2",
Number: 1,
}, {
ID: "3",
ID: "3",
Number: 2,
}},
preSteps: []bool{true, false, true},
postSteps: []bool{false, true, true},