-
Bug
-
Resolution: Unresolved
-
Normal
-
None
-
4.16
Description of problem:
How reproducible:
Steps to Reproduce:
- Create a CloudPrivateIPConfig
Actual results:
2025-01-06T22:29:20.517217043Z I0106 22:29:20.517183 1 cloudprivateipconfig_controller.go:352] CloudPrivateIPConfig: "xx.xx.xx.xx" will be added to node: "<hostname>" 2025-01-06T22:29:20.517283023Z I0106 22:29:20.517183 1 cloudprivateipconfig_controller.go:352] CloudPrivateIPConfig: "xx.xx.xx.xx" will be added to node: "<hostname>" 2025-01-06T22:29:20.518399247Z I0106 22:29:20.518379 1 cloudprivateipconfig_controller.go:352] CloudPrivateIPConfig: "xx.xx.xx.xx" will be added to node: "<hostname>" 2025-01-06T22:29:20.527426582Z I0106 22:29:20.527401 1 azure.go:140] Acquiring node lock for assigning ip address, node: <hostname>, ip: xx.xx.xx.xx 2025-01-06T22:29:20.528282519Z I0106 22:29:20.528259 1 azure.go:140] Acquiring node lock for assigning ip address, node: <hostname>, ip: xx.xx.xx.xx 2025-01-06T22:29:20.528297571Z I0106 22:29:20.528278 1 azure.go:140] Acquiring node lock for assigning ip address, node: <hostname>, ip: xx.xx.xx.xx 2025-01-06T22:29:21.469837845Z E0106 22:29:21.469789 1 runtime.go:79] Observed a panic: "invalid memory address or nil pointer dereference" (runtime error: invalid memory address or nil pointer dereference) 2025-01-06T22:29:21.469837845Z goroutine 165 [running]: 2025-01-06T22:29:21.469837845Z k8s.io/apimachinery/pkg/util/runtime.logPanic({0x2932e60?, 0x4b3ff80}) 2025-01-06T22:29:21.469837845Z /go/src/github.com/openshift/cloud-network-config-controller/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:75 +0x85 2025-01-06T22:29:21.469837845Z k8s.io/apimachinery/pkg/util/runtime.HandleCrash({0x0, 0x0, 0xc000b303a0?}) 2025-01-06T22:29:21.469837845Z /go/src/github.com/openshift/cloud-network-config-controller/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:49 +0x6b 2025-01-06T22:29:21.469837845Z panic({0x2932e60?, 0x4b3ff80?}) 2025-01-06T22:29:21.469837845Z /usr/lib/golang/src/runtime/panic.go:914 +0x21f 2025-01-06T22:29:21.469837845Z github.com/openshift/cloud-network-config-controller/pkg/cloudprovider.(*Azure).AssignPrivateIP(0xc000816000, {0xc0008d0330, 0x10, 0x10}, 0xc000622000) 2025-01-06T22:29:21.469837845Z /go/src/github.com/openshift/cloud-network-config-controller/pkg/cloudprovider/azure.go:186 +0xe6a 2025-01-06T22:29:21.469837845Z github.com/openshift/cloud-network-config-controller/pkg/controller/cloudprivateipconfig.(*CloudPrivateIPConfigController).SyncHandler(0xc0002f54a0, {0xc000aa0740, 0xb}) 2025-01-06T22:29:21.469837845Z /go/src/github.com/openshift/cloud-network-config-controller/pkg/controller/cloudprivateipconfig/cloudprivateipconfig_controller.go:397 +0x1d89 2025-01-06T22:29:21.469837845Z github.com/openshift/cloud-network-config-controller/pkg/controller.(*CloudNetworkConfigController).processNextWorkItem.func1(0xc000b06780, {0x26a57a0?, 0xc000b303a0}) 2025-01-06T22:29:21.469837845Z /go/src/github.com/openshift/cloud-network-config-controller/pkg/controller/controller.go:152 +0x10c
Expected results:
No Panic....
Additional info:
Affected Platforms: OVNK + Azure + egressIP
Customer Issue: EgressIP + Azure cloud causes cloud network config controller to panic.
Root Cause:
CredentialsRequest openshift-cloud-network-config-controller-azure is missing permission: Microsoft.Network/load-balancers/backendAddressPools/read
Customer Has Confirmation that manually appending this permission to the workload identity has resolved the panic..
Ironically is in the error handling branch. A quick look reveals that pool.Name is the only variable that is dereferenced without checking if it is not nil.
