netdev - Re: [net-next 2/2] tipc: add NULL pointer check to prevent kernel oops

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Date:   Sun, 15 Mar 2020 00:07:27 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     hoang.h.le@...tech.com.au
Cc:     ying.xue@...driver.com, netdev@...r.kernel.org, jmaloy@...hat.com,
        maloy@...jonn.com
Subject: Re: [net-next 2/2] tipc: add NULL pointer check to prevent kernel
 oops

From: hoang.h.le@...tech.com.au
Date: Fri, 13 Mar 2020 10:18:03 +0700

> From: Hoang Le <hoang.h.le@...tech.com.au>
> 
> Calling:
> tipc_node_link_down()->
>    - tipc_node_write_unlock()->tipc_mon_peer_down()
>    - tipc_mon_peer_down()
>   just after disabling bearer could be caused kernel oops.
> 
> Fix this by adding a sanity check to make sure valid memory
> access.
> 
> Acked-by: Jon Maloy <jmaloy@...hat.com>
> Signed-off-by: Hoang Le <hoang.h.le@...tech.com.au>

Applied.