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Subject: Re: [PATCH net] net: initialize sk_rx_queue_mapping in sk_clone()
From: patchwork-bot+netdevbpf@kernel.org
Message-Id: 
 <177570241829.964658.13177362315432736913.git-patchwork-notify@kernel.org>
Date: Thu, 09 Apr 2026 02:40:18 +0000
References: <20260407084219.95718-1-jiayuan.chen@linux.dev>
In-Reply-To: <20260407084219.95718-1-jiayuan.chen@linux.dev>
To: Jiayuan Chen <jiayuan.chen@linux.dev>
Cc: netdev@vger.kernel.org, edumazet@google.com, kuniyu@google.com,
 pabeni@redhat.com, willemb@google.com, davem@davemloft.net, kuba@kernel.org,
 horms@kernel.org, soheil@google.com, linux-kernel@vger.kernel.org

Hello:

This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Tue,  7 Apr 2026 16:42:18 +0800 you wrote:
> sk_clone() initializes sk_tx_queue_mapping via sk_tx_queue_clear()
> but does not initialize sk_rx_queue_mapping. Since this field is in
> the sk_dontcopy region, it is neither copied from the parent socket
> by sock_copy() nor zeroed by sk_prot_alloc() (called without
> __GFP_ZERO from sk_clone).
> 
> Commit 03cfda4fa6ea ("tcp: fix another uninit-value
> (sk_rx_queue_mapping)") attempted to fix this by introducing
> sk_mark_napi_id_set() with force_set=true in tcp_child_process().
> However, sk_mark_napi_id_set() -> sk_rx_queue_set() only writes
> when skb_rx_queue_recorded(skb) is true. If the 3-way handshake
> ACK arrives through a device that does not record rx_queue (e.g.
> loopback or veth), sk_rx_queue_mapping remains uninitialized.
> 
> [...]

Here is the summary with links:
  - [net] net: initialize sk_rx_queue_mapping in sk_clone()
    https://git.kernel.org/netdev/net-next/c/1a6b3965385a

You are awesome, thank you!
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