forked from wrenn/wrenn
pptx704
962860ba74
envd crashes with "fatal error: bad summary data" after Firecracker snapshot/restore because the page allocator radix tree is inconsistent when vCPUs are frozen mid-allocation. The port scanner goroutine allocates heavily every second, making it the primary trigger. Add POST /snapshot/prepare to envd — the host agent calls it before vm.Pause to quiesce continuous goroutines and force GC. On restore, PostInit restarts the port subsystem via the existing /init endpoint. - New PortSubsystem abstraction with Start/Stop/Restart lifecycle - Context-based goroutine cancellation (replaces irreversible channel close) - Context-aware Signal to prevent scanner/forwarder deadlock - Fix forwarder goroutine leak (was spinning forever on closed channel) - Kill socat children on stop to prevent orphans across snapshots - Fix double cmd.Wait panic (exec.Command instead of CommandContext)