netdev - Re: [PATCH net-next] net: phylink: fix NULL pl->pcs dereference during phylink_pcs_poll

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Message-Id: <165661741418.1981.16436724422790201997.git-patchwork-notify@kernel.org>
Date:   Thu, 30 Jun 2022 19:30:14 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Vladimir Oltean <vladimir.oltean@....com>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, rmk+kernel@...linux.org.uk,
        linux@...linux.org.uk, andrew@...n.ch, hkallweit1@...il.com
Subject: Re: [PATCH net-next] net: phylink: fix NULL pl->pcs dereference during
 phylink_pcs_poll_start

Hello:

This patch was applied to netdev/net-next.git (master)
by Jakub Kicinski <kuba@...nel.org>:

On Wed, 29 Jun 2022 22:33:58 +0300 you wrote:
> The current link mode of the phylink instance may not require an
> attached PCS. However, phylink_major_config() unconditionally
> dereferences this potentially NULL pointer when restarting the link poll
> timer, which will panic the kernel.
> 
> Fix the problem by checking whether a PCS exists in phylink_pcs_poll_start(),
> otherwise do nothing. The code prior to the blamed patch also only
> looked at pcs->poll within an "if (pcs)" block.
> 
> [...]

Here is the summary with links:
  - [net-next] net: phylink: fix NULL pl->pcs dereference during phylink_pcs_poll_start
    https://git.kernel.org/netdev/net-next/c/b7d78b46d5e8

You are awesome, thank you!
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