linux-kernel - Re: [PATCH net] Revert "net/smc: Introduce TCP ULP support"

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Message-Id: 
 <176983080486.3985311.3826362708256060586.git-patchwork-notify@kernel.org>
Date: Sat, 31 Jan 2026 03:40:04 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: D. Wythe <alibuda@...ux.alibaba.com>
Cc: davem@...emloft.net, dust.li@...ux.alibaba.com, edumazet@...gle.com,
 kuba@...nel.org, pabeni@...hat.com, sidraya@...ux.ibm.com,
 wenjia@...ux.ibm.com, mjambigi@...ux.ibm.com, horms@...nel.org,
 tonylu@...ux.alibaba.com, guwen@...ux.alibaba.com,
 linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
 linux-s390@...r.kernel.org, netdev@...r.kernel.org,
 oliver.yang@...ux.alibaba.com, viro@...iv.linux.org.uk
Subject: Re: [PATCH net] Revert "net/smc: Introduce TCP ULP support"

Hello:

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

On Wed, 28 Jan 2026 13:54:52 +0800 you wrote:
> This reverts commit d7cd421da9da2cc7b4d25b8537f66db5c8331c40.
> 
> As reported by Al Viro, the TCP ULP support for SMC is fundamentally
> broken. The implementation attempts to convert an active TCP socket
> into an SMC socket by modifying the underlying `struct file`, dentry,
> and inode in-place, which violates core VFS invariants that assume
> these structures are immutable for an open file, creating a risk of
> use after free errors and general system instability.
> 
> [...]

Here is the summary with links:
  - [net] Revert "net/smc: Introduce TCP ULP support"
    https://git.kernel.org/netdev/net-next/c/df31a6b0a305

You are awesome, thank you!
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