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  1. OpenShift Bugs
  2. OCPBUGS-41631

Panic seen in CI job for MCC pod

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      Description of problem:

      Panic seen in below CI job when run the below command

      $ w3m -dump -cols 200 'https://search.dptools.openshift.org/?name=^periodic&type=junit&search=machine-config-controller.*Observed+a+panic' | grep 'failures match'
      periodic-ci-openshift-insights-operator-stage-insights-operator-e2e-tests-periodic (all) - 1 runs, 100% failed, 100% of failures match = 100% impact
      periodic-ci-openshift-insights-operator-release-4.17-insights-operator-e2e-tests-periodic (all) - 2 runs, 100% failed, 50% of failures match = 50% impact
      

      Panic observed:

      E0910 09:00:04.283647       1 runtime.go:79] Observed a panic: "invalid memory address or nil pointer dereference" (runtime error: invalid memory address or nil pointer dereference)
      goroutine 268 [running]:
      k8s.io/apimachinery/pkg/util/runtime.logPanic({0x36c8b40, 0x5660c90})
      	/go/src/github.com/openshift/machine-config-operator/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:75 +0x85
      k8s.io/apimachinery/pkg/util/runtime.HandleCrash({0x0, 0x0, 0xc000ce8540?})
      	/go/src/github.com/openshift/machine-config-operator/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:49 +0x6b
      panic({0x36c8b40?, 0x5660c90?})
      	/usr/lib/golang/src/runtime/panic.go:770 +0x132
      github.com/openshift/machine-config-operator/pkg/controller/node.(*Controller).updateNode(0xc000d6e360, {0x3abd580?, 0xc00224a608}, {0x3abd580?, 0xc001bd2308})
      	/go/src/github.com/openshift/machine-config-operator/pkg/controller/node/node_controller.go:585 +0x1f3
      k8s.io/client-go/tools/cache.ResourceEventHandlerFuncs.OnUpdate(...)
      	/go/src/github.com/openshift/machine-config-operator/vendor/k8s.io/client-go/tools/cache/controller.go:246
      k8s.io/client-go/tools/cache.(*processorListener).run.func1()
      	/go/src/github.com/openshift/machine-config-operator/vendor/k8s.io/client-go/tools/cache/shared_informer.go:976 +0xea
      k8s.io/apimachinery/pkg/util/wait.BackoffUntil.func1(0x30?)
      	/go/src/github.com/openshift/machine-config-operator/vendor/k8s.io/apimachinery/pkg/util/wait/backoff.go:226 +0x33
      k8s.io/apimachinery/pkg/util/wait.BackoffUntil(0xc001933f70, {0x3faaba0, 0xc000759710}, 0x1, 0xc00097bda0)
      	/go/src/github.com/openshift/machine-config-operator/vendor/k8s.io/apimachinery/pkg/util/wait/backoff.go:227 +0xaf
      k8s.io/apimachinery/pkg/util/wait.JitterUntil(0xc000750f70, 0x3b9aca00, 0x0, 0x1, 0xc00097bda0)
      	/go/src/github.com/openshift/machine-config-operator/vendor/k8s.io/apimachinery/pkg/util/wait/backoff.go:204 +0x7f
      k8s.io/apimachinery/pkg/util/wait.Until(...)
      	/go/src/github.com/openshift/machine-config-operator/vendor/k8s.io/apimachinery/pkg/util/wait/backoff.go:161
      k8s.io/client-go/tools/cache.(*processorListener).run(0xc000dc2630)
      	/go/src/github.com/openshift/machine-config-operator/vendor/k8s.io/client-go/tools/cache/shared_informer.go:972 +0x69
      k8s.io/apimachinery/pkg/util/wait.(*Group).Start.func1()
      	/go/src/github.com/openshift/machine-config-operator/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:72 +0x52
      created by k8s.io/apimachinery/pkg/util/wait.(*Group).Start in goroutine 261
      	/go/src/github.com/openshift/machine-config-operator/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:70 +0x73
      panic: runtime error: invalid memory address or nil pointer dereference [recovered]
      	panic: runtime error: invalid memory address or nil pointer dereference
      [signal SIGSEGV: segmentation violation code=0x1 addr=0x28 pc=0x33204b3] 

       

      Version-Release number of selected component (if applicable):

          

      How reproducible:

      Seen in this CI run -https://prow.ci.openshift.org/job-history/test-platform-results/logs/periodic-ci-openshift-insights-operator-stage-insights-operator-e2e-tests-periodic

      Steps to Reproduce:

      $ w3m -dump -cols 200 'https://search.dptools.openshift.org/?name=^periodic&type=junit&search=machine-config-controller.*Observed+a+panic' | grep 'failures match'
      

      Actual results:

          

      Expected results:

       No panic to observe

      Additional info:

          

            djoshy David Joshy
            rh-ee-ptalgulk Prachiti Talgulkar
            Sergio Regidor de la Rosa Sergio Regidor de la Rosa
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              Created:
              Updated: