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fix: panic when environment variables are empty #14415

Merged
merged 1 commit into from
Jun 24, 2022
Merged

fix: panic when environment variables are empty #14415

merged 1 commit into from
Jun 24, 2022

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NgZiming
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On mac OS, environment variables like: OLDPWD are usually empty. May trigger panics like:

😄  minikube v1.26.0 on Darwin 11.6.5
panic: runtime error: index out of range [1] with length 1

goroutine 1 [running]:
k8s.io/minikube/cmd/minikube/cmd.displayEnviron({0xc000a69a40?, 0x1c, 0xb?})
	/private/tmp/minikube-20220623-65769-c2xa25/cmd/minikube/cmd/start.go:445 +0x252
k8s.io/minikube/cmd/minikube/cmd.runStart(0x7316040?, {0x5d07e13?, 0x0?, 0x0?})
	/private/tmp/minikube-20220623-65769-c2xa25/cmd/minikube/cmd/start.go:157 +0x245
github.com/spf13/cobra.(*Command).execute(0x7316040, {0x73736d8, 0x0, 0x0})
	/Users/brew/Library/Caches/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/cobra@v1.5.0/command.go:876 +0x67b
github.com/spf13/cobra.(*Command).ExecuteC(0x7313fc0)
	/Users/brew/Library/Caches/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/cobra@v1.5.0/command.go:990 +0x3b4
github.com/spf13/cobra.(*Command).Execute(...)
	/Users/brew/Library/Caches/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/cobra@v1.5.0/command.go:918
k8s.io/minikube/cmd/minikube/cmd.Execute()
	/private/tmp/minikube-20220623-65769-c2xa25/cmd/minikube/cmd/root.go:170 +0xca5
main.main()
	/private/tmp/minikube-20220623-65769-c2xa25/cmd/minikube/main.go:88 +0x255

On mac OS, environment variables like: OLDPWD are usually empty. May trigger panics like:
```bash
😄  minikube v1.26.0 on Darwin 11.6.5
panic: runtime error: index out of range [1] with length 1

goroutine 1 [running]:
k8s.io/minikube/cmd/minikube/cmd.displayEnviron({0xc000a69a40?, 0x1c, 0xb?})
	/private/tmp/minikube-20220623-65769-c2xa25/cmd/minikube/cmd/start.go:445 +0x252
k8s.io/minikube/cmd/minikube/cmd.runStart(0x7316040?, {0x5d07e13?, 0x0?, 0x0?})
	/private/tmp/minikube-20220623-65769-c2xa25/cmd/minikube/cmd/start.go:157 +0x245
github.com/spf13/cobra.(*Command).execute(0x7316040, {0x73736d8, 0x0, 0x0})
	/Users/brew/Library/Caches/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/cobra@v1.5.0/command.go:876 +0x67b
github.com/spf13/cobra.(*Command).ExecuteC(0x7313fc0)
	/Users/brew/Library/Caches/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/cobra@v1.5.0/command.go:990 +0x3b4
github.com/spf13/cobra.(*Command).Execute(...)
	/Users/brew/Library/Caches/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/cobra@v1.5.0/command.go:918
k8s.io/minikube/cmd/minikube/cmd.Execute()
	/private/tmp/minikube-20220623-65769-c2xa25/cmd/minikube/cmd/root.go:170 +0xca5
main.main()
	/private/tmp/minikube-20220623-65769-c2xa25/cmd/minikube/main.go:88 +0x255
```
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linux-foundation-easycla bot commented Jun 24, 2022

CLA Signed

The committers listed above are authorized under a signed CLA.

  • ✅ login: NgZiming / name: 吴梓铭 (360cc86)

@k8s-ci-robot k8s-ci-robot added the cncf-cla: no Indicates the PR's author has not signed the CNCF CLA. label Jun 24, 2022
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@k8s-ci-robot k8s-ci-robot added the needs-ok-to-test Indicates a PR that requires an org member to verify it is safe to test. label Jun 24, 2022
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Hi @NgZiming. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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@k8s-ci-robot k8s-ci-robot added the size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. label Jun 24, 2022
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Can one of the admins verify this patch?

@k8s-ci-robot k8s-ci-robot added cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. and removed cncf-cla: no Indicates the PR's author has not signed the CNCF CLA. labels Jun 24, 2022
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Thanks for the fix!

@spowelljr spowelljr merged commit b496d66 into kubernetes:master Jun 24, 2022
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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: NgZiming, spowelljr

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@k8s-ci-robot k8s-ci-robot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Jun 24, 2022
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medyagh commented Aug 2, 2022

nice catch, thank you @NgZiming

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5 participants