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chore: prevent "false positive" data race detection w/ ContainerDaemonSocket (#859)
`ContainerDaemonSocket` is stored on a shared struct and was mutated to a default value when empty, which trips the data race detector as a mutation of shared state without any synchronization. However as all codepaths would be setting it to the same value in the mutation, here's no functional bug. This commit prevents the "false positive", but it also centralizes the default value for a slightly better programming practice.
```
==================
WARNING: DATA RACE
Read at 0x00c00027f9e0 by goroutine 1104:
code.forgejo.org/forgejo/runner/v9/act/runner.(*RunContext).GetBindsAndMounts()
/.../forgejo-runner/act/runner/run_context.go:130 +0x87
code.forgejo.org/forgejo/runner/v9/act/runner.(*RunContext).prepareJobContainer()
/.../forgejo-runner/act/runner/run_context.go:449 +0xad1
code.forgejo.org/forgejo/runner/v9/act/runner.(*RunContext).startContainer.func1.(*RunContext).startJobContainer.2()
/.../forgejo-runner/act/runner/run_context.go:587 +0x5e
code.forgejo.org/forgejo/runner/v9/act/runner.(*RunContext).startContainer.func1()
/.../forgejo-runner/act/runner/run_context.go:836 +0xf3
code.forgejo.org/forgejo/runner/v9/act/runner.newJobExecutor.NewPipelineExecutor.Executor.Then.func21()
/.../forgejo-runner/act/common/executor.go:136 +0x57
code.forgejo.org/forgejo/runner/v9/act/runner.(*RunContext).Executor.func1()
/.../forgejo-runner/act/runner/run_context.go:929 +0x68
code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.1()
/.../forgejo-runner/act/runner/runner.go:218 +0x271
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 0x00c00027f9e0 by goroutine 1103:
code.forgejo.org/forgejo/runner/v9/act/runner.(*RunContext).GetBindsAndMounts()
/.../forgejo-runner/act/runner/run_context.go:131 +0xc7
code.forgejo.org/forgejo/runner/v9/act/runner.(*RunContext).prepareJobContainer()
/.../forgejo-runner/act/runner/run_context.go:449 +0xad1
code.forgejo.org/forgejo/runner/v9/act/runner.(*RunContext).startContainer.func1.(*RunContext).startJobContainer.2()
/.../forgejo-runner/act/runner/run_context.go:587 +0x5e
code.forgejo.org/forgejo/runner/v9/act/runner.(*RunContext).startContainer.func1()
/.../forgejo-runner/act/runner/run_context.go:836 +0xf3
code.forgejo.org/forgejo/runner/v9/act/runner.newJobExecutor.NewPipelineExecutor.Executor.Then.func21()
/.../forgejo-runner/act/common/executor.go:136 +0x57
code.forgejo.org/forgejo/runner/v9/act/runner.(*RunContext).Executor.func1()
/.../forgejo-runner/act/runner/run_context.go:929 +0x68
code.forgejo.org/forgejo/runner/v9/act/runner.(*runnerImpl).NewPlanExecutor.func1.1()
/.../forgejo-runner/act/runner/runner.go:218 +0x271
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 1104 (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 1103 (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/859): <!--number 859 --><!--line 0 --><!--description Y2hvcmU6IHByZXZlbnQgImZhbHNlIHBvc2l0aXZlIiBkYXRhIHJhY2UgZGV0ZWN0aW9uIHcvIENvbnRhaW5lckRhZW1vblNvY2tldA==-->chore: prevent "false positive" data race detection w/ ContainerDaemonSocket<!--description-->
<!--end release-notes-assistant-->
Reviewed-on: https://code.forgejo.org/forgejo/runner/pulls/859
Reviewed-by: Gusted <gusted@noreply.code.forgejo.org>
Co-authored-by: Mathieu Fenniak <mathieu@fenniak.net>
Co-committed-by: Mathieu Fenniak <mathieu@fenniak.net>
This commit is contained in:
Mathieu Fenniak
earl-warren
parent
af0ebf6d51
commit
815e7aed04
2 changed files with 15 additions and 12 deletions
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@ -138,13 +138,11 @@ func (rc *RunContext) getInternalVolumeEnv(ctx context.Context) string {
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// Returns the binds and mounts for the container, resolving paths as appopriate
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func (rc *RunContext) GetBindsAndMounts(ctx context.Context) ([]string, map[string]string, []string) {
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if rc.Config.ContainerDaemonSocket == "" {
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rc.Config.ContainerDaemonSocket = "/var/run/docker.sock"
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}
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binds := []string{}
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if rc.Config.ContainerDaemonSocket != "-" {
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daemonPath := getDockerDaemonSocketMountPath(rc.Config.ContainerDaemonSocket)
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containerDaemonSocket := rc.Config.GetContainerDaemonSocket()
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if containerDaemonSocket != "-" {
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daemonPath := getDockerDaemonSocketMountPath(containerDaemonSocket)
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binds = append(binds, fmt.Sprintf("%s:%s", daemonPath, "/var/run/docker.sock"))
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}
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@ -182,7 +180,7 @@ func (rc *RunContext) GetBindsAndMounts(ctx context.Context) ([]string, map[stri
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mounts[rc.getInternalVolumeWorkdir(ctx)] = ext.ToContainerPath(rc.Config.Workdir)
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}
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validVolumes := append(rc.getInternalVolumeNames(ctx), getDockerDaemonSocketMountPath(rc.Config.ContainerDaemonSocket))
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validVolumes := append(rc.getInternalVolumeNames(ctx), getDockerDaemonSocketMountPath(containerDaemonSocket))
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validVolumes = append(validVolumes, rc.Config.ValidVolumes...)
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return binds, mounts, validVolumes
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}
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@ -1445,12 +1443,10 @@ func (rc *RunContext) handleServiceCredentials(ctx context.Context, creds map[st
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// GetServiceBindsAndMounts returns the binds and mounts for the service container, resolving paths as appopriate
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func (rc *RunContext) GetServiceBindsAndMounts(svcVolumes []string) ([]string, map[string]string) {
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if rc.Config.ContainerDaemonSocket == "" {
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rc.Config.ContainerDaemonSocket = "/var/run/docker.sock"
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}
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containerDaemonSocket := rc.Config.GetContainerDaemonSocket()
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binds := []string{}
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if rc.Config.ContainerDaemonSocket != "-" {
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daemonPath := getDockerDaemonSocketMountPath(rc.Config.ContainerDaemonSocket)
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if containerDaemonSocket != "-" {
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daemonPath := getDockerDaemonSocketMountPath(containerDaemonSocket)
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binds = append(binds, fmt.Sprintf("%s:%s", daemonPath, "/var/run/docker.sock"))
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}
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@ -85,6 +85,13 @@ func (c Config) GetToken() string {
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return token
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}
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func (c *Config) GetContainerDaemonSocket() string {
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if c.ContainerDaemonSocket == "" {
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return "/var/run/docker.sock"
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}
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return c.ContainerDaemonSocket
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}
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type caller struct {
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runContext *RunContext
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}
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