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  1. OpenShift Bugs
  2. OCPBUGS-45972

Azure Cloud Controller Manager Panic

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      * Previously, if an informer watch stream missed an event because of a temporary disconnection, the informer might return a special signal type after it reconnected to the network, especially when the informer recognizes that an EndpointSlice object was deleted during the temporary disconnection. The returned signal type indicated that the state of the event has stalled and that the object was deleted. The returned signal type was not accurate and might have caused confusion for a {product-title} user. With this release, the CCM handles unexpected signal types so that {product-title} users do not receive confusing information from returned types. (link:https://issues.redhat.com/browse/OCPBUGS-45972[*OCPBUGS-45972*])
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      * Previously, if an informer watch stream missed an event because of a temporary disconnection, the informer might return a special signal type after it reconnected to the network, especially when the informer recognizes that an EndpointSlice object was deleted during the temporary disconnection. The returned signal type indicated that the state of the event has stalled and that the object was deleted. The returned signal type was not accurate and might have caused confusion for a {product-title} user. With this release, the CCM handles unexpected signal types so that {product-title} users do not receive confusing information from returned types. (link: https://issues.redhat.com/browse/OCPBUGS-45972 [* OCPBUGS-45972 *])
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      This is a clone of issue OCPBUGS-45859. The following is the description of the original issue:
      —
      The following test is failing more than expected:

      Undiagnosed panic detected in pod

      See the sippy test details for additional context.

      Observed in 4.18-e2e-azure-ovn/1864410356567248896 as well as pull-ci-openshift-installer-master-e2e-azure-ovn/1864312373058211840

      : Undiagnosed panic detected in pod
{  pods/openshift-cloud-controller-manager_azure-cloud-controller-manager-5788c6f7f9-n2mnh_cloud-controller-manager_previous.log.gz:E1204 22:27:54.558549       1 iface.go:262] "Observed a panic" panic="interface conversion: interface {} is cache.DeletedFinalStateUnknown, not *v1.EndpointSlice" panicGoValue="&runtime.TypeAssertionError{_interface:(*abi.Type)(0x291daa0), concrete:(*abi.Type)(0x2b73880), asserted:(*abi.Type)(0x2f5cc20), missingMethod:\"\"}" stacktrace=<}

              joelspeed Joel Speed
              openshift-crt-jira-prow OpenShift Prow Bot
              Zhaohua Sun Zhaohua Sun
              Darragh Fitzmaurice Darragh Fitzmaurice
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