Re: [PATCH net-next] ppp: update channel locking comment and doc

[Qingfang Deng]

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@xxxxxxxxx>


Sashiko pointed out more issues. I should keep the comments for now.

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pw-bot: cr