When trying to destroy the OCP cluster on GCP, I hit a Panic error. The error is a nil pointer dereference in the waitFor method of the Cluster Uninstaller struct. The panic occurs in the waitFor method, which is called by handleOperation, invoked by deleteDisk, and ultimately part of destroyDisks. The likely cause is a nil pointer being passed to waitFor, possibly due to a failed GCP API call or an uninitialized client.

    4.18

    1. Install 4.18 cluster on GCP
    2. Destroy the cluster using openshift-installer
   
    

    Cluster and associated resources should destroy without any error

    During the deletion of cluster resources, hitting a panic error

    This seems to occur when a call to the Delete function returns no error but a nil operation (op) like here https://github.com/t-cas/openshift-installer/blob/main/pkg/destroy/gcp/disk.go#L126C32-L126C38 for disks or here https://github.com/t-cas/openshift-installer/blob/main/pkg/destroy/gcp/instance.go#L108 for VMs.
Error is triggered when calling this waitFor function https://github.com/openshift/installer/blob/main/pkg/destroy/gcp/gcp.go#L425 as "op" parameter is dereferenced without any check here https://github.com/openshift/installer/blob/main/pkg/destroy/gcp/gcp.go#L442