netdev - Re: [PATCH net 0/2] net: rmnet: fix interface leak for rmnet module

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Date:   Sat, 04 Jul 2020 18:05:56 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     ap420073@...il.com
Cc:     kuba@...nel.org, subashab@...eaurora.org, stranche@...eaurora.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH net 0/2] net: rmnet: fix interface leak for rmnet module

From: Taehee Yoo <ap420073@...il.com>
Date: Thu,  2 Jul 2020 17:07:37 +0000

> There are two problems in rmnet module that they occur the leak of
> a lower interface.
> The symptom is the same, which is the leak of a lower interface.
> But there are two different real problems.
> This patchset is to fix these real problems.
> 
> 1. Do not allow to have different two modes.
> As a lower interface of rmnet, there are two modes that they are VND
> and BRIDGE.
> One interface can have only one mode.
> But in the current rmnet, there is no code to prevent to have
> two modes in one lower interface.
> So, interface leak occurs.
> 
> 2. Do not allow to add multiple bridge interfaces.
> rmnet can have only two bridge interface.
> If an additional bridge interface is tried to be attached,
> rmnet should deny it.
> But there is no code to do that.
> So, interface leak occurs.

Series applied and queued up for v5.6+ -stable, thanks.