linux-kernel - Re: [PATCH v1] net/mac80211/agg-tx: check the return value of rcu_dereference_protected_tid

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Message-ID: <0041cbac8840b51d16c6a5487a332a37effbb264.camel@sipsolutions.net>
Date:   Fri, 02 Sep 2022 16:43:26 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     Li Zhong <floridsleeves@...il.com>, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, linux-wireless@...r.kernel.org
Cc:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com
Subject: Re: [PATCH v1] net/mac80211/agg-tx: check the return value of
 rcu_dereference_protected_tid_tx()

On Fri, 2022-09-02 at 00:57 -0700, Li Zhong wrote:
> From: lily <floridsleeves@...il.com>
> 
> Check the return value of rcu_dereference_protected_tid_tx(), which
> could be NULL and result in null pointer dereference if not checked.
> 

Except ... it can't happen?

johannes