sequenceDiagram
    participant SR as Stream Receiver
    participant Log as Log System
    participant ML as ML Training Worker
    participant Dlib as Dlib KMeans
    participant CG as Cgroup Ebpf Cachestat
    participant Proc as /proc Filesystem

    Note over SR,Proc: Runtime interaction flows for Coverity fixes

    SR->>SR: stream_receiver_remove_internal()
    alt rpt->host is NULL (early handshake failure)
        SR->>Log: ND_LOG_FIELD_STR(NDF_NIDL_NODE, NULL)
        Note over SR,Log: CHANGED: Guarded dereference - passes NULL instead of crashing
    else rpt->host exists
        SR->>Log: ND_LOG_FIELD_STR(NDF_NIDL_NODE, rpt->host->hostname)
    end
    SR->>Log: ND_LOG_FIELD_TXT(NDF_SRC_IP, rpt->remote_ip)
    SR->>Log: ND_LOG_FIELD_TXT(NDF_SRC_PORT, rpt->remote_port)

    Note over ML,Dlib: ML training dimension flow

    ML->>ML: ml_dimension_train_model()
    ML->>Dlib: ml_kmeans_init()
    ML->>Dlib: ml_kmeans_train()
    alt Training succeeds
        Dlib-->>ML: model trained
        ML->>ML: update models
    else Dlib throws exception (numerical edge case)
        Dlib-->>ML: std::exception (e.g. dlib::fatal_error)
        Note over ML: CHANGED: Catch exception, log error, skip model for round
        ML->>ML: return ML_WORKER_RESULT_NOT_ENOUGH_COLLECTED_VALUES
    end

    Note over CG,Proc: Cgroup ebpf cachestat flow

    CG->>CG: cgroup_ebpfgo_open_nonempty_procs_file(path_buf, ...)
    Note over CG: path_buf is always a stack array (caller guarantee)
    CG->>Proc: try to open /proc files for cgroup
    alt Non-empty proc file found
        Proc-->>CG: procfile read
        CG->>CG: snprintfz(best_path, ..., path_buf)
        Note over CG: CHANGED: Removed redundant null checks on path_buf
        CG->>CG: snprintfz(path_buf, ..., best_path)
    else Empty or no file
        Proc-->>CG: null or empty
        CG->>CG: continue iteration
    end