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Subject: Re: [PATCH v2] net/smc: hold a reference on net_device returned by
 pnet_find_base_ndev()
From: patchwork-bot+netdevbpf@kernel.org
Message-Id: 
 <179210881301.4163852.1185798622656959268.git-patchwork-notify@kernel.org>
Date: Fri, 16 Oct 2026 00:00:13 +0000
References: <20261007040009.137568-1-atharva.a.vartak@gmail.com>
In-Reply-To: <20261007040009.137568-1-atharva.a.vartak@gmail.com>
To: Atharva Vartak <atharva.a.vartak@gmail.com>
Cc: alibuda@linux.alibaba.com, dust.li@linux.alibaba.com,
 sidraya@linux.ibm.com, mjambigi@linux.ibm.com, tonylu@linux.alibaba.com,
 guwen@linux.alibaba.com, davem@davemloft.net, edumazet@google.com,
 kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, ubraun@linux.ibm.com,
 hwippel@linux.ibm.com, linux-rdma@vger.kernel.org,
 linux-s390@vger.kernel.org, netdev@vger.kernel.org,
 linux-kernel@vger.kernel.org, w@1wt.eu

Hello:

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

On Wed,  7 Oct 2026 00:00:09 -0400 you wrote:
> pnet_find_base_ndev() resolves the base net_device for stacked devices
> under RTNL, then drops the lock and returns the raw pointer without
> taking a reference.  All three callers dereference the pointer after
> RTNL has been released, creating a use-after-free window if the device
> is concurrently unregistered.
> 
> Take a reference with netdev_hold() before dropping RTNL and add the
> matching netdev_put() in every return path of the three callers:
> 
> [...]

Here is the summary with links:
  - [v2] net/smc: hold a reference on net_device returned by pnet_find_base_ndev()
    https://git.kernel.org/netdev/net-next/c/e6435b2cc5fd

You are awesome, thank you!
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