Subject: Re: [RFC PATCH net-next] tcp: Add net.ipv4.tcp_purge_receive_queue sysctl

From: Jakub Kicinski <[email-masked]>
Date: Wed, 25 Feb 2026 17:43:54 -0800

On Wed, 25 Feb 2026 15:46:33 +0800 Leon Hwang wrote:
> Issue:
> When a TCP socket in the CLOSE_WAIT state receives a RST packet, the
> current implementation does not clear the socket's receive queue. This
> causes SKBs in the queue to remain allocated until the socket is
> explicitly closed by the application. As a consequence:
> 
> 1. The page pool pages held by these SKBs are not released.

On what kernel version and driver are you observing this?