From: Qingfang Deng <qingfang.deng@linux.dev>
To: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Simon Horman <horms@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
Shuah Khan <skhan@linuxfoundation.org>,
Breno Leitao <leitao@debian.org>,
netdev@vger.kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: Paul Mackerras <paulus@ozlabs.org>
Subject: Re: [PATCH net-next] ppp: update channel locking comment and doc
Date: Mon, 10 Aug 2026 09:19:28 +0800 [thread overview]
Message-ID: <01f94272-da18-4a6f-8907-c482522a8ae6@linux.dev> (raw)
In-Reply-To: <20260807060153.1380548-1-qingfang.deng@linux.dev>
On 2026/8/7 14:01, Qingfang Deng wrote:
> Commit ec4215683e47 ("ppp: defer channel free to an RCU grace period to
> fix pppol2tp RX UAF") defers freeing generic channel state to an RCU
> grace period via call_rcu().
>
> Update the SMP locking notes comment in include/linux/ppp_channel.h and
> Documentation/networking/ppp_generic.rst to reflect that in-flight RCU
> readers can complete safely after ppp_unregister_channel().
>
> Reported by Sashiko.
>
> Signed-off-by: Qingfang Deng <qingfang.deng@linux.dev>
Sashiko pointed out more issues. I should keep the comments for now.
---
pw-bot: cr
prev parent reply other threads:[~2026-08-10 1:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-07 6:01 [PATCH net-next] ppp: update channel locking comment and doc Qingfang Deng
2026-08-10 1:19 ` Qingfang Deng [this message]
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