server24 commented on issue #3497: VMs stuck in Stopping state due to NPE at org.apache.cloudstack.network.topology.BasicNetworkVisitor.visit(BasicNetworkVisitor.java:201) URL: https://github.com/apache/cloudstack/issues/3497#issuecomment-512289225 I have attached jdb and the problem seems to be that destination is NULL, specifically that dhcp.getDestination() returns NULL. From the debugger: ``` Breakpoint hit: "thread=API-Job-Executor-1", org.apache.cloudstack.network.topology.BasicNetworkVisitor.visit(), line=193 bci=0 API-Job-Executor-1[1] list Source file not found: BasicNetworkVisitor.java API-Job-Executor-1[1] locals Method arguments: dhcp = instance of com.cloud.network.rules.DhcpEntryRules(id=11576) Local variables: API-Job-Executor-1[1] print dhcp dhcp = "com.cloud.network.rules.DhcpEntryRules@725a95d4" API-Job-Executor-1[1] print dhcp.getNicVo() dhcp.getNicVo() = "Nic[862-609-9f0f0a12-c397-4735-84b2-a6222a929e1a-84.33.37.153]" API-Job-Executor-1[1] print dhcp.getUserVM() dhcp.getUserVM() = "VM[User|i-9-609-VM]" API-Job-Executor-1[1] print dhcp.getDestination() dhcp.getDestination() = null API-Job-Executor-1[1] print dhcp.isRemove() dhcp.isRemove() = true ``` So no destination is specified and this is causing the NPE. Hope this helps.
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