kubectl: kubectl panic on pod delete

Is this a request for help? (If yes, you should use our troubleshooting guide and community support channels, see http://kubernetes.io/docs/troubleshooting/.): No

What keywords did you search in Kubernetes issues before filing this one? (If you have found any duplicates, you should instead reply there.): panic, SIGSEGV

Is this a BUG REPORT or FEATURE REQUEST? (choose one): BUG REPORT ?

Kubernetes version (use kubectl version):

Client Version: version.Info{Major:“1”, Minor:“9”, GitVersion:“v1.9.2”, GitCommit:“5fa2db2bd46ac79e5e00a4e6ed24191080aa463b”, GitTreeState:“clean”, BuildDate:“2018-01-18T21:12:46Z”, GoVersion:“go1.9.2”, Compiler:“gc”, Platform:“darwin/amd64”}
Server Version: version.Info{Major:“1”, Minor:“9”, GitVersion:“v1.9.0”, GitCommit:“925c127ec6b946659ad0fd596fa959be43f0cc05”, GitTreeState:“clean”, BuildDate:“2017-12-15T20:55:30Z”, GoVersion:“go1.9.2”, Compiler:“gc”, Platform:“linux/amd64”}

Environment:

Cloud provider or hardware configuration: Minikube (minikube version: v0.24.1 (also seems to be same at v0.25.0)) ( --kubernetes-version v1.9.0 --bootstrapper kubeadm --vm-driver virtualbox )
OS (e.g. from /etc/os-release): macOS High Sierra (Version 10.13.2)
Kernel (e.g. uname -a): Darwin A966.local 17.3.0 Darwin Kernel Version 17.3.0: Thu Nov 9 18:09:22 PST 2017; root:xnu-4570.31.3~1/RELEASE_X86_64 x86_64
Install tools: brew?
Others: Docker for mac running?

What happened:

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x58 pc=0x21b8f83]

What you expected to happen: No panic.

How to reproduce it (as minimally and precisely as possible): Get ngnix-deployment.yaml from https://raw.githubusercontent.com/kubernetes/website/master/docs/concepts/workloads/controllers/nginx-deployment.yaml .

Create the deployment: λ kubectl create -f nginx-deployment.yaml

deployment "nginx-deployment" created

Delete a pod from the deployment (either one or all gives the same result): λ kubectl delete pod nginx-deployment-6c54bd5869-2lshn

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x58 pc=0x21b8f83]

goroutine 1 [running]:
k8s.io/kubernetes/pkg/kubectl.ReaperFor(0x0, 0x0, 0x2370237, 0x3, 0x0, 0x0, 0x0, 0xc420a094a0, 0x13fdaa2, 0xbe9284d8ac70ccf0)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/pkg/kubectl/delete.go:82 +0x1373
k8s.io/kubernetes/pkg/kubectl/cmd/util.(*ring1Factory).Reaper(0xc420751200, 0xc4204f79d0, 0x3666b40, 0x1a0003825900, 0xb8, 0xb8)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/pkg/kubectl/cmd/util/factory_object_mapping.go:295 +0x151
k8s.io/kubernetes/pkg/kubectl/cmd/util.(*factory).Reaper(0xc420751230, 0xc4204f79d0, 0x3825900, 0x3e2b6c8, 0x0, 0x2678340)
        <autogenerated>:1 +0x47
k8s.io/kubernetes/pkg/kubectl/cmd.ReapResult.func1(0xc4204f7b20, 0x0, 0x0, 0x3815c00, 0x2853435)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/pkg/kubectl/cmd/delete.go:250 +0xe9
k8s.io/kubernetes/pkg/kubectl/resource.ContinueOnErrorVisitor.Visit.func1(0xc4204f7b20, 0x0, 0x0, 0x0, 0x0)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/pkg/kubectl/resource/visitor.go:396 +0x164
k8s.io/kubernetes/pkg/kubectl/resource.DecoratedVisitor.Visit.func1(0xc4204f7b20, 0x0, 0x0, 0x7, 0xa)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/pkg/kubectl/resource/visitor.go:372 +0xe7
k8s.io/kubernetes/pkg/kubectl/resource.FlattenListVisitor.Visit.func1(0xc4204f7b20, 0x0, 0x0, 0xc42096d140, 0x414e798)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/pkg/kubectl/resource/visitor.go:433 +0x4fe
k8s.io/kubernetes/pkg/kubectl/resource.(*Info).Visit(0xc4204f7b20, 0xc42096d140, 0x0, 0x10103e7)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/pkg/kubectl/resource/visitor.go:105 +0x42
k8s.io/kubernetes/pkg/kubectl/resource.VisitorList.Visit(0xc4201f2350, 0x1, 0x1, 0xc42096d140, 0x1, 0xc42096d140)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/pkg/kubectl/resource/visitor.go:234 +0x63
k8s.io/kubernetes/pkg/kubectl/resource.(*VisitorList).Visit(0xc420450900, 0xc42096d140, 0x3e2b6c8, 0x0)
        <autogenerated>:1 +0x58
k8s.io/kubernetes/pkg/kubectl/resource.FlattenListVisitor.Visit(0x365a640, 0xc420450900, 0xc4203516c0, 0xc4207864c0, 0x60000000001, 0xc4207864c0)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/pkg/kubectl/resource/visitor.go:428 +0x9e
k8s.io/kubernetes/pkg/kubectl/resource.(*FlattenListVisitor).Visit(0xc420450920, 0xc4207864c0, 0x28, 0x3825900)
        <autogenerated>:1 +0x58
k8s.io/kubernetes/pkg/kubectl/resource.DecoratedVisitor.Visit(0x365a5c0, 0xc420450920, 0xc4201f2360, 0x2, 0x2, 0xc420450980, 0x1, 0xc420450980)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/pkg/kubectl/resource/visitor.go:363 +0x9b
k8s.io/kubernetes/pkg/kubectl/resource.(*DecoratedVisitor).Visit(0xc42096d110, 0xc420450980, 0xc4201f2370, 0xc420a09b60)
        <autogenerated>:1 +0x62
k8s.io/kubernetes/pkg/kubectl/resource.ContinueOnErrorVisitor.Visit(0x365a4c0, 0xc42096d110, 0xc4204f7b90, 0x0, 0x2)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/pkg/kubectl/resource/visitor.go:391 +0xe4
k8s.io/kubernetes/pkg/kubectl/resource.(*ContinueOnErrorVisitor).Visit(0xc4201f2370, 0xc4204f7b90, 0x1010b48, 0x70)
        <autogenerated>:1 +0x4f
k8s.io/kubernetes/pkg/kubectl/resource.(*Result).Visit(0xc4202ae600, 0xc4204f7b90, 0xc42095bd10, 0x3679b80)```
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/pkg/kubectl/resource/result.go:98 +0x62
k8s.io/kubernetes/pkg/kubectl/cmd.ReapResult(0xc4202ae600, 0x3686980, 0xc420751230, 0x3659480, 0xc42000c018, 0xc420130001, 0x0, 0xffffffffffffffff, 0xc4209a0000, 0x3679b80, ...)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/pkg/kubectl/cmd/delete.go:245 +0x16c
k8s.io/kubernetes/pkg/kubectl/cmd.(*DeleteOptions).RunDelete(0xc4207104d0, 0xc420290480, 0x0)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/pkg/kubectl/cmd/delete.go:235 +0xd2
k8s.io/kubernetes/pkg/kubectl/cmd.NewCmdDelete.func1(0xc420290480, 0xc42013d4c0, 0x2, 0x2)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/pkg/kubectl/cmd/delete.go:142 +0x178
k8s.io/kubernetes/vendor/github.com/spf13/cobra.(*Command).execute(0xc420290480, 0xc42013d300, 0x2, 0x2, 0xc420290480, 0xc42013d300)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/vendor/github.com/spf13/cobra/command.go:603 +0x234
k8s.io/kubernetes/vendor/github.com/spf13/cobra.(*Command).ExecuteC(0xc420396900, 0x8000104, 0x0, 0xffffffffffffffff)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/vendor/github.com/spf13/cobra/command.go:689 +0x2fe
k8s.io/kubernetes/vendor/github.com/spf13/cobra.(*Command).Execute(0xc420396900, 0xc420751230, 0x3659440)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/vendor/github.com/spf13/cobra/command.go:648 +0x2b
k8s.io/kubernetes/cmd/kubectl/app.Run(0x0, 0x0)
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/cmd/kubectl/app/kubectl.go:41 +0xd5
main.main()
        /private/tmp/kubernetes-cli-20180118-36889-kx51hi/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/cmd/kubectl/kubectl.go:27 +0x26

Anything else we need to know: kubectl describe pod nginx-deployment-6c54bd5869-2lshn Gives correct result.

Any deployment gives the same result.

About this issue

Original URL
State: closed
Created 6 years ago
Reactions: 3
Comments: 21 (3 by maintainers)

Most upvoted comments

Hi, i am working on a project to create a declarative application in printers…I dont have any idea how to approach this…my job depends on this…i searched on the internet and found your project…guys can you please help me out for my project or any documents that i can study dor declarative application… Regards Rishab Patnaik

On Sun, Apr 1, 2018, 6:32 PM Martin Dünkelmann notifications@github.com wrote:

Same error here Server Version is 1.9.6 Client Version is 1.9.6

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub https://github.com/kubernetes/kubectl/issues/226#issuecomment-377785401, or mute the thread https://github.com/notifications/unsubscribe-auth/AbcxyYS_1mcKh1lvkhip_bUMFe6Vs5TRks5tkNAAgaJpZM4RsiGi .

ghost on Apr 1, 2018

Running against another, non-minikube, server seems to work for me.

Client Version: version.Info{Major:“1”, Minor:“9”, GitVersion:“v1.9.2”, GitCommit:“5fa2db2bd46ac79e5e00a4e6ed24191080aa463b”, GitTreeState:“clean”, BuildDate:“2018-01-18T21:12:46Z”, GoVersion:“go1.9.2”, Compiler:“gc”, Platform:“darwin/amd64”} Server Version: version.Info{Major:“1”, Minor:“9”, GitVersion:“v1.9.2”, GitCommit:“5fa2db2bd46ac79e5e00a4e6ed24191080aa463b”, GitTreeState:“clean”, BuildDate:“2018-01-18T09:42:01Z”, GoVersion:“go1.9.2”, Compiler:“gc”, Platform:“linux/amd64”}

Against a cluster running on a Ubuntu16 desktop with kubeadm (kubeadm version: &version.Info{Major:“1”, Minor:“9”, GitVersion:“v1.9.1”, GitCommit:“3a1c9449a956b6026f075fa3134ff92f7d55f812”, GitTreeState:“clean”, BuildDate:“2018-01-04T11:40:06Z”, GoVersion:“go1.9.2”, Compiler:“gc”, Platform:“linux/amd64”} ) and kubelet (Kubernetes v1.9.1) and weave.

So this might be an issue with minikube only (added https://github.com/kubernetes/minikube/issues/2504 there)?

rednatto on Feb 2, 2018