Subject: Re: [PATCH net v6] net: stmmac: Prevent NULL deref when RX memory exhausted

From: [email-masked]
Date: Tue, 28 Apr 2026 10:50:05 +0000

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni <[email-masked]>:

On Tue, 21 Apr 2026 21:45:03 -0700 you wrote:
> The CPU receives frames from the MAC through conventional DMA: the CPU
> allocates buffers for the MAC, then the MAC fills them and returns
> ownership to the CPU. For each hardware RX queue, the CPU and MAC
> coordinate through a shared ring array of DMA descriptors: one
> descriptor per DMA buffer. Each descriptor includes the buffer's
> physical address and a status flag ("OWN") indicating which side owns
> the buffer: OWN=0 for CPU, OWN=1 for MAC. The CPU is only allowed to set
> the flag and the MAC is only allowed to clear it, and both must move
> through the ring in sequence: thus the ring is used for both
> "submissions" and "completions."
> 
> [...]

Here is the summary with links:
  - [net,v6] net: stmmac: Prevent NULL deref when RX memory exhausted
    https://git.kernel.org/netdev/net/c/0bb05e6adfa9

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html