netdev - Re: [net PATCH v2] net: ethernet: stmicro: stmmac: fix possible memory leak in __stmmac

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Date: Wed, 14 Jun 2023 21:17:30 +0200
From: Simon Horman <simon.horman@...igine.com>
To: Christian Marangi <ansuelsmth@...il.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@...com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Jose Abreu <joabreu@...opsys.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Russell King <linux@...linux.org.uk>, netdev@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Jose Abreu <Jose.Abreu@...opsys.com>, stable@...r.kernel.org
Subject: Re: [net PATCH v2] net: ethernet: stmicro: stmmac: fix possible
 memory leak in __stmmac_open

On Wed, Jun 14, 2023 at 11:17:14AM +0200, Christian Marangi wrote:
> Fix a possible memory leak in __stmmac_open when stmmac_init_phy fails.
> It's also needed to free everything allocated by stmmac_setup_dma_desc
> and not just the dma_conf struct.
> 
> Drop free_dma_desc_resources from __stmmac_open and correctly call
> free_dma_desc_resources on each user of __stmmac_open on error.
> 
> Reported-by: Jose Abreu <Jose.Abreu@...opsys.com>
> Fixes: ba39b344e924 ("net: ethernet: stmicro: stmmac: generate stmmac dma conf before open")
> Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
> Cc: stable@...r.kernel.org

Reviewed-by: Simon Horman <simon.horman@...igine.com>