linux-kernel - Re: [PATCH v2 2/2] usb: typec: qcom-pmic-typec: fix missing fwnode removal in error path

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: <abe44e99-7f99-4912-b94a-7856b3104627@linaro.org>
Date: Sun, 20 Oct 2024 19:30:52 +0100
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Javier Carrasco <javier.carrasco.cruz@...il.com>,
 Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
 Caleb Connolly <caleb.connolly@...aro.org>,
 Guenter Roeck <linux@...ck-us.net>
Cc: linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
 linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH v2 2/2] usb: typec: qcom-pmic-typec: fix missing fwnode
 removal in error path

On 20/10/2024 13:56, Javier Carrasco wrote:
> If drm_dp_hpd_bridge_register() fails, the probe function returns
> without removing the fwnode via fwnode_handle_put(), leaking the
> resource.
> 
> Jump to fwnode_remove if drm_dp_hpd_bridge_register() fails to remove
> the fwnode acquired with device_get_named_child_node().
> 
> Cc: stable@...r.kernel.org
> Fixes: 7d9f1b72b296 ("usb: typec: qcom-pmic-typec: switch to DRM_AUX_HPD_BRIDGE")
> Signed-off-by: Javier Carrasco <javier.carrasco.cruz@...il.com>
> ---
>   drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c | 6 ++++--
>   1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c
> index 73a159e67ec2..3766790c1548 100644
> --- a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c
> +++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c
> @@ -93,8 +93,10 @@ static int qcom_pmic_typec_probe(struct platform_device *pdev)
>   		return -EINVAL;
>   
>   	bridge_dev = devm_drm_dp_hpd_bridge_alloc(tcpm->dev, to_of_node(tcpm->tcpc.fwnode));
> -	if (IS_ERR(bridge_dev))
> -		return PTR_ERR(bridge_dev);
> +	if (IS_ERR(bridge_dev)) {
> +		ret = PTR_ERR(bridge_dev);
> +		goto fwnode_remove;
> +	}
>   
>   	tcpm->tcpm_port = tcpm_register_port(tcpm->dev, &tcpm->tcpc);
>   	if (IS_ERR(tcpm->tcpm_port)) {
> 
Acked-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>