Re: [PATCH net-next] net: axienet: release every RX buffer in axienet_dma_bd_release()

Hello:

This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski [off-list ref]:

On Thu, 15 Oct 2026 11:47:43 +0300 you wrote:

The RX walk in axienet_dma_bd_release() stops at the first descriptor
without an skb, assuming that such a slot and all after it were never
filled.  That holds on the axienet_dma_bd_init() error path, but not once
the ring has been running: when axienet_rx_poll() fails to allocate or
map a replacement buffer it leaves the slot it emptied with a NULL skb,
in the middle of a populated ring, until a later poll refills it.
Closing the interface before then leaks the skb and the streaming DMA
mapping of every descriptor after that slot, which can be most of the
ring, and is most likely under memory pressure.

[...]

Here is the summary with links:
  - [net-next] net: axienet: release every RX buffer in axienet_dma_bd_release()
    https://git.kernel.org/netdev/net-next/c/b59787892d04

You are awesome, thank you!
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