linux-kernel - Re: [PATCH] drivers: phy: fix memory leak in error handling

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]

Date:	Mon, 11 Nov 2013 14:31:11 +0530
From:	Kishon Vijay Abraham I <kishon@...com>
To:	Michael Opdenacker <michael.opdenacker@...e-electrons.com>
CC:	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drivers: phy: fix memory leak in error handling

Hi Michael,

On Saturday 09 November 2013 10:58 AM, Michael Opdenacker wrote:
> This fixes a memory leak in the phy_create() function.
> 
> If ida_simple_get() returns with an error, the code jumps
> to the "err0" label without freeing the "phy" pointer.
> 
> This patch introduces a new error management label to address this.
> 
> Issue found with Coverity (CID 1127219)
> 
> Signed-off-by: Michael Opdenacker <michael.opdenacker@...e-electrons.com>

A patch has already been sent for fixing this.

https://git.kernel.org/cgit/linux/kernel/git/kishon/linux-phy.git/commit/?h=fixes

Thanks
Kishon

> ---
>  drivers/phy/phy-core.c | 10 ++++++----
>  1 file changed, 6 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
> index 03cf8fb81554..8ddffe84d905 100644
> --- a/drivers/phy/phy-core.c
> +++ b/drivers/phy/phy-core.c
> @@ -453,7 +453,7 @@ struct phy *phy_create(struct device *dev, const struct phy_ops *ops,
>  	if (id < 0) {
>  		dev_err(dev, "unable to get id\n");
>  		ret = id;
> -		goto err0;
> +		goto err1;
>  	}
>  
>  	device_initialize(&phy->dev);
> @@ -468,11 +468,11 @@ struct phy *phy_create(struct device *dev, const struct phy_ops *ops,
>  
>  	ret = dev_set_name(&phy->dev, "phy-%s.%d", dev_name(dev), id);
>  	if (ret)
> -		goto err1;
> +		goto err2;
>  
>  	ret = device_add(&phy->dev);
>  	if (ret)
> -		goto err1;
> +		goto err2;
>  
>  	if (pm_runtime_enabled(dev)) {
>  		pm_runtime_enable(&phy->dev);
> @@ -481,9 +481,11 @@ struct phy *phy_create(struct device *dev, const struct phy_ops *ops,
>  
>  	return phy;
>  
> -err1:
> +err2:
>  	ida_remove(&phy_ida, phy->id);
>  	put_device(&phy->dev);
> +
> +err1:
>  	kfree(phy);
>  
>  err0:
> 

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/