linux-kernel - Re: [PATCH net] net: dsa: hellcreek: fix missing error handling in LED registration

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Message-ID: <87v7jej9i8.fsf@jax.kurt.home>
Date: Thu, 13 Nov 2025 15:24:31 +0100
From: Kurt Kanzenbach <kurt@...utronix.de>
To: Pavel Zhigulin <Pavel.Zhigulin@...persky.com>
Cc: Pavel Zhigulin <Pavel.Zhigulin@...persky.com>, Andrew Lunn
 <andrew@...n.ch>, Vladimir Oltean <olteanv@...il.com>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
 <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Richard Cochran
 <richardcochran@...il.com>, Florian Fainelli <f.fainelli@...il.com>,
 netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
 lvc-project@...uxtesting.org
Subject: Re: [PATCH net] net: dsa: hellcreek: fix missing error handling in
 LED registration

On Thu Nov 13 2025, Pavel Zhigulin wrote:
> The LED setup routine registered both led_sync_good
> and led_is_gm devices without checking the return
> values of led_classdev_register(). If either registration
> failed, the function continued silently, leaving the
> driver in a partially-initialized state and leaking
> a registered LED classdev.
>
> Add proper error handling
>
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
>
> Fixes: 7d9ee2e8ff15 ("net: dsa: hellcreek: Add PTP status LEDs")
> Signed-off-by: Pavel Zhigulin <Pavel.Zhigulin@...persky.com>

Acked-by: Kurt Kanzenbach <kurt@...utronix.de>

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