linux-kernel - Re: [PATCH] ax25: fix NPD bug in ax25

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Date:   Wed, 09 Feb 2022 12:00:09 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Duoming Zhou <duoming@....edu.cn>
Cc:     linux-hams@...r.kernel.org, jreuter@...na.de, ralf@...ux-mips.org,
        davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ax25: fix NPD bug in ax25_disconnect

Hello:

This patch was applied to netdev/net.git (master)
by David S. Miller <davem@...emloft.net>:

On Tue,  8 Feb 2022 23:40:00 +0800 you wrote:
> The ax25_disconnect() in ax25_kill_by_device() is not
> protected by any locks, thus there is a race condition
> between ax25_disconnect() and ax25_destroy_socket().
> when ax25->sk is assigned as NULL by ax25_destroy_socket(),
> a NULL pointer dereference bug will occur if site (1) or (2)
> dereferences ax25->sk.
> 
> [...]

Here is the summary with links:
  - ax25: fix NPD bug in ax25_disconnect
    https://git.kernel.org/netdev/net/c/7ec02f5ac8a5

You are awesome, thank you!
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