Invalid memory address or nil pointer dereference in Cloud Network Config Controller  

    4.12

    sometimes

    1. Happens by itself sometimes
    2.
    3.
    

    Panic and pod restarts

    Panics due to Invalid memory address or nil pointer dereference  should not occur

    E0118 07:54:18.703891 1 runtime.go:79] Observed a panic: "invalid memory address or nil pointer dereference" (runtime error: invalid memory address or nil pointer dereference)
goroutine 93 [running]:
k8s.io/apimachinery/pkg/util/runtime.logPanic({0x203c8c0?, 0x3a27b20})
/go/src/github.com/openshift/cloud-network-config-controller/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:75 +0x99
k8s.io/apimachinery/pkg/util/runtime.HandleCrash({0x0, 0x0, 0xc0003bd090?})
/go/src/github.com/openshift/cloud-network-config-controller/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:49 +0x75
panic({0x203c8c0, 0x3a27b20})
/usr/lib/golang/src/runtime/panic.go:884 +0x212
github.com/openshift/cloud-network-config-controller/pkg/cloudprovider.(*Azure).AssignPrivateIP(0xc0001ce700, {0xc000696540, 0x10, 0x10}, 0xc000818ec0)
/go/src/github.com/openshift/cloud-network-config-controller/pkg/cloudprovider/azure.go:146 +0xcf0
github.com/openshift/cloud-network-config-controller/pkg/controller/cloudprivateipconfig.(*CloudPrivateIPConfigController).SyncHandler(0xc000986000, {0xc000896a90, 0xe})
/go/src/github.com/openshift/cloud-network-config-controller/pkg/controller/cloudprivateipconfig/cloudprivateipconfig_controller.go:327 +0x1013
github.com/openshift/cloud-network-config-controller/pkg/controller.(*CloudNetworkConfigController).processNextWorkItem.func1(0xc000720d80, {0x1e640c0?, 0xc0003bd090?})
/go/src/github.com/openshift/cloud-network-config-controller/pkg/controller/controller.go:152 +0x11c
github.com/openshift/cloud-network-config-controller/pkg/controller.(*CloudNetworkConfigController).processNextWorkItem(0xc000720d80)
/go/src/github.com/openshift/cloud-network-config-controller/pkg/controller/controller.go:162 +0x46
github.com/openshift/cloud-network-config-controller/pkg/controller.(*CloudNetworkConfigController).runWorker(0xc000504ea0?)
/go/src/github.com/openshift/cloud-network-config-controller/pkg/controller/controller.go:113 +0x25
k8s.io/apimachinery/pkg/util/wait.BackoffUntil.func1(0x0?)
/go/src/github.com/openshift/cloud-network-config-controller/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:157 +0x3e
k8s.io/apimachinery/pkg/util/wait.BackoffUntil(0x0?, {0x27b3220, 0xc000894480}, 0x1, 0xc0000aa540)
/go/src/github.com/openshift/cloud-network-config-controller/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:158 +0xb6
k8s.io/apimachinery/pkg/util/wait.JitterUntil(0x0?, 0x3b9aca00, 0x0, 0x0?, 0x0?)
/go/src/github.com/openshift/cloud-network-config-controller/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:135 +0x89
k8s.io/apimachinery/pkg/util/wait.Until(0x0?, 0x0?, 0x0?)
/go/src/github.com/openshift/cloud-network-config-controller/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:92 +0x25
created by github.com/openshift/cloud-network-config-controller/pkg/controller.(*CloudNetworkConfigController).Run
/go/src/github.com/openshift/cloud-network-config-controller/pkg/controller/controller.go:99 +0x3aa
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=0x8 pc=0x1a40b30]
goroutine 93 [running]:
k8s.io/apimachinery/pkg/util/runtime.HandleCrash({0x0, 0x0, 0xc0003bd090?})
/go/src/github.com/openshift/cloud-network-config-controller/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:56 +0xd7
panic({0x203c8c0, 0x3a27b20})
/usr/lib/golang/src/runtime/panic.go:884 +0x212
github.com/openshift/cloud-network-config-controller/pkg/cloudprovider.(*Azure).AssignPrivateIP(0xc0001ce700, {0xc000696540, 0x10, 0x10}, 0xc000818ec0)
/go/src/github.com/openshift/cloud-network-config-controller/pkg/cloudprovider/azure.go:146 +0xcf0
github.com/openshift/cloud-network-config-controller/pkg/controller/cloudprivateipconfig.(*CloudPrivateIPConfigController).SyncHandler(0xc000986000, {0xc000896a90, 0xe})
/go/src/github.com/openshift/cloud-network-config-controller/pkg/controller/cloudprivateipconfig/cloudprivateipconfig_controller.go:327 +0x1013
github.com/openshift/cloud-network-config-controller/pkg/controller.(*CloudNetworkConfigController).processNextWorkItem.func1(0xc000720d80, {0x1e640c0?, 0xc0003bd090?})
/go/src/github.com/openshift/cloud-network-config-controller/pkg/controller/controller.go:152 +0x11c
github.com/openshift/cloud-network-config-controller/pkg/controller.(*CloudNetworkConfigController).processNextWorkItem(0xc000720d80)
/go/src/github.com/openshift/cloud-network-config-controller/pkg/controller/controller.go:162 +0x46
github.com/openshift/cloud-network-config-controller/pkg/controller.(*CloudNetworkConfigController).runWorker(0xc000504ea0?)
/go/src/github.com/openshift/cloud-network-config-controller/pkg/controller/controller.go:113 +0x25
k8s.io/apimachinery/pkg/util/wait.BackoffUntil.func1(0x0?)
/go/src/github.com/openshift/cloud-network-config-controller/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:157 +0x3e
k8s.io/apimachinery/pkg/util/wait.BackoffUntil(0x0?, {0x27b3220, 0xc000894480}, 0x1, 0xc0000aa540)
/go/src/github.com/openshift/cloud-network-config-controller/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:158 +0xb6
k8s.io/apimachinery/pkg/util/wait.JitterUntil(0x0?, 0x3b9aca00, 0x0, 0x0?, 0x0?)
/go/src/github.com/openshift/cloud-network-config-controller/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:135 +0x89
k8s.io/apimachinery/pkg/util/wait.Until(0x0?, 0x0?, 0x0?)
/go/src/github.com/openshift/cloud-network-config-controller/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:92 +0x25
created by github.com/openshift/cloud-network-config-controller/pkg/controller.(*CloudNetworkConfigController).Run
/go/src/github.com/openshift/cloud-network-config-controller/pkg/controller/controller.go:99 +0x3aa