linux-kernel - Re: [PATCH net v2] rxrpc: Fix recvmsg() unconditional requeue

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Message-Id: 
 <176884620879.85277.2855458086448073147.git-patchwork-notify@kernel.org>
Date: Mon, 19 Jan 2026 18:10:08 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: David Howells <dhowells@...hat.com>
Cc: netdev@...r.kernel.org, faith@...lic.io, pumpkin@...co.re,
 marc.dionne@...istor.com, niro@....io, w@....eu, edumazet@...gle.com,
 davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com, horms@...nel.org,
 linux-afs@...ts.infradead.org, security@...nel.org, stable@...nel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH net v2] rxrpc: Fix recvmsg() unconditional requeue 

Hello:

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

On Wed, 14 Jan 2026 22:03:23 +0000 you wrote:
> If rxrpc_recvmsg() fails because MSG_DONTWAIT was specified but the call at
> the front of the recvmsg queue already has its mutex locked, it requeues
> the call - whether or not the call is already queued.  The call may be on
> the queue because MSG_PEEK was also passed and so the call was not dequeued
> or because the I/O thread requeued it.
> 
> The unconditional requeue may then corrupt the recvmsg queue, leading to
> things like UAFs or refcount underruns.
> 
> [...]

Here is the summary with links:
  - [net,v2] rxrpc: Fix recvmsg() unconditional requeue
    https://git.kernel.org/netdev/net/c/2c28769a51de

You are awesome, thank you!
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