netdev - Re: [PATCH net] net: dsa: don't dereference NULL extack in dsa_slave

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Message-Id: <166126741519.17387.9920726954282752743.git-patchwork-notify@kernel.org>
Date:   Tue, 23 Aug 2022 15:10:15 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Vladimir Oltean <vladimir.oltean@....com>
Cc:     netdev@...r.kernel.org, andrew@...n.ch, vivien.didelot@...il.com,
        f.fainelli@...il.com, olteanv@...il.com, clement.leger@...tlin.com,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, saproj@...il.com
Subject: Re: [PATCH net] net: dsa: don't dereference NULL extack in
 dsa_slave_changeupper()

Hello:

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

On Fri, 19 Aug 2022 20:39:25 +0300 you wrote:
> When a driver returns -EOPNOTSUPP in dsa_port_bridge_join() but failed
> to provide a reason for it, DSA attempts to set the extack to say that
> software fallback will kick in.
> 
> The problem is, when we use brctl and the legacy bridge ioctls, the
> extack will be NULL, and DSA dereferences it in the process of setting
> it.
> 
> [...]

Here is the summary with links:
  - [net] net: dsa: don't dereference NULL extack in dsa_slave_changeupper()
    https://git.kernel.org/netdev/net/c/855a28f9c96c

You are awesome, thank you!
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