linux-kernel - Re: [PATCH] rxrpc: Fix skbuff cleanup of call's recvmsg_queue and rx_oos

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Date: Fri, 05 Jan 2024 21:24:52 +0000
From: David Howells <dhowells@...hat.com>
Cc: dhowells@...hat.com, Marc Dionne <marc.dionne@...istor.com>,
    "David S. Miller" <davem@...emloft.net>,
    Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
    Paolo Abeni <pabeni@...hat.com>, linux-afs@...ts.infradead.org,
    netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rxrpc: Fix skbuff cleanup of call's recvmsg_queue and rx_oos_queue

David Howells <dhowells@...hat.com> wrote:

> Fix rxrpc_cleanup_ring() to use rxrpc_purge_queue() rather than
> skb_queue_purge() so that the count of outstanding skbuffs is correctly
> updated when a failed call is cleaned up.
> 
> Without this rmmod may hang waiting for rxrpc_n_rx_skbs to become zero.
> 
> Reported-by: Marc Dionne <marc.dionne@...istor.com>
> Signed-off-by: David Howells <dhowells@...hat.com>
> cc: "David S. Miller" <davem@...emloft.net>
> cc: Eric Dumazet <edumazet@...gle.com>
> cc: Jakub Kicinski <kuba@...nel.org>
> cc: Paolo Abeni <pabeni@...hat.com>
> cc: linux-afs@...ts.infradead.org
> cc: netdev@...r.kernel.org

Fixes: 5d7edbc9231e ("rxrpc: Get rid of the Rx ring")