linux-kernel - Re: [PATCH] p54: Fix an error handling path in p54spi

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <892df159-e73f-be1c-a9c8-bf861fe45d83@lwfinger.net>
Date:   Sun, 12 Jun 2022 15:45:01 -0500
From:   Larry Finger <Larry.Finger@...inger.net>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Christian Lamparter <chunkeey@...glemail.com>,
        Kalle Valo <kvalo@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        "John W. Linville" <linville@...driver.com>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christian Lamparter <chunkeey@....de>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH] p54: Fix an error handling path in p54spi_probe()

On 6/12/22 14:54, Christophe JAILLET wrote:
> If an error occurs after a successful call to p54spi_request_firmware(), it
> must be undone by a corresponding release_firmware() as already done in
> the error handling path of p54spi_request_firmware() and in the .remove()
> function.
> 
> Add the missing call in the error handling path and update some goto
> label accordingly.
> 
> Fixes: cd8d3d321285 ("p54spi: p54spi driver")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
>   drivers/net/wireless/intersil/p54/p54spi.c | 6 ++++--
>   1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/wireless/intersil/p54/p54spi.c b/drivers/net/wireless/intersil/p54/p54spi.c
> index f99b7ba69fc3..679ac164c994 100644
> --- a/drivers/net/wireless/intersil/p54/p54spi.c
> +++ b/drivers/net/wireless/intersil/p54/p54spi.c
> @@ -650,14 +650,16 @@ static int p54spi_probe(struct spi_device *spi)
>   
>   	ret = p54spi_request_eeprom(hw);
>   	if (ret)
> -		goto err_free_common;
> +		goto err_release_firmaware;
>   
>   	ret = p54_register_common(hw, &priv->spi->dev);
>   	if (ret)
> -		goto err_free_common;
> +		goto err_release_firmaware;
>   
>   	return 0;
>   
> +err_release_firmaware:
> +	release_firmware(priv->firmware);
>   err_free_common:
>   	free_irq(gpio_to_irq(p54spi_gpio_irq), spi);
>   err_free_gpio_irq:

Why "err_release_firmaware" rather than "err_release_firmware"? Otherwise the 
patch looks good.

Larry