From: patchwork-bot+netdevbpf@kernel.org
To: Sam Edwards <cfsworks@gmail.com>
Cc: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com,
kuba@kernel.org, pabeni@redhat.com, mcoquelin.stm32@gmail.com,
alexandre.torgue@foss.st.com, rmk+kernel@armlinux.org.uk,
maxime.chevallier@bootlin.com, ovidiu.panait.rb@renesas.com,
vladimir.oltean@nxp.com, baruch@tkos.co.il,
fancer.lancer@gmail.com, peppe.cavallaro@st.com,
netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, CFSworks@gmail.com,
stable@vger.kernel.org, linux@armlinux.org.uk
Subject: Re: [PATCH net v6] net: stmmac: Prevent NULL deref when RX memory exhausted
Date: Tue, 28 Apr 2026 10:50:05 +0000 [thread overview]
Message-ID: <177737340530.407008.57733216818450708.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20260422044503.5349-1-CFSworks@gmail.com>
Hello:
This patch was applied to netdev/net.git (main)
by Paolo Abeni <pabeni@redhat.com>:
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!
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prev parent reply other threads:[~2026-04-28 10:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-22 4:45 [PATCH net v6] net: stmmac: Prevent NULL deref when RX memory exhausted Sam Edwards
2026-04-28 10:40 ` Paolo Abeni
2026-04-28 10:50 ` patchwork-bot+netdevbpf [this message]
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