[REVIEW] net/nbl: improve exception handling for the mailbox

[Stephen Hemminger]

On Mon, 26 Jan 2026 10:18:38 -0800
Stephen Hemminger <stephen at networkplumber.org> wrote:

> ### Code Review
> **Warning**: Missing NULL checks before rte_memzone_free()
> ```c
> rte_free(tx_ring->tx_entry);
> rte_memzone_free(tx_ring->net_hdr_mz);  // Could be NULL if setup failed
> rte_memzone_free(tx_ring->desc_mz);     // Could be NULL if setup failed
> ```
> While rte_memzone_free() handles NULL, this is not documented behavior. Better to check explicitly or document assumption.

Ignore this feedback. It indicates missing comments in rte_memzone, not your problem