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Subject: Re: [PATCH net v2] vsock: Fix memory leak in
 vmci_transport_recv_dgram_cb()
From: patchwork-bot+netdevbpf@kernel.org
Message-Id: 
 <179148541301.391001.8349992685770043645.git-patchwork-notify@kernel.org>
Date: Thu, 08 Oct 2026 18:50:13 +0000
References: <20261008144046.90853-1-Ilia.Gavrilov@infotecs.ru>
In-Reply-To: <20261008144046.90853-1-Ilia.Gavrilov@infotecs.ru>
To: Ilia Gavrilov <Ilia.Gavrilov@infotecs.ru>
Cc: sgarzare@redhat.com, davem@davemloft.net, edumazet@kernel.org,
 kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, georgezhang@vmware.com,
 dtor@vmware.com, acking@vmware.com, virtualization@lists.linux.dev,
 netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
 lvc-project@linuxtesting.org

Hello:

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

On Thu, 8 Oct 2026 14:41:17 +0000 you wrote:
> During the closure of a datagram socket, the vmci_transport_recv_dgram_cb()
> function may be called, which will add the packets
> to the socket's backlog; then, after the receive queue is cleared,
> the __release_sock() function will move the packet back from the socket's
> backlog to the receive queue, which will lead to a memory leak.
> 
> sock_close
>   __sock_release
>     __vsock_release
>       // take ownership by user-space
>       lock_sock_nested
>       sock_set_flag(sk, SOCK_DEAD)
>       vmci_transport_release
>                                       vmci_dispatch_dgs
>                                         vmci_datagram_invoke_guest_handler
>                                           vmci_transport_recv_dgram_cb
>                                             sk_receive_skb
>                                               if (!sock_owned_by_user(sk))
>                                                   [...]
>                                          (!)  else if sk_add_backlog()
>                                                   [...]
>   (!) skb_queue_purge(&sk->sk_receive_queue)
> 
> [...]

Here is the summary with links:
  - [net,v2] vsock: Fix memory leak in vmci_transport_recv_dgram_cb()
    https://git.kernel.org/netdev/net/c/7c24a4e87e21

You are awesome, thank you!
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