linux-kernel - Re: [PATCH] switchtec: Fix an 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]

Message-ID: <20170412172736.GF25197@bhelgaas-glaptop.roam.corp.google.com>
Date:   Wed, 12 Apr 2017 12:27:36 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     kurt.schwemmer@...rosemi.com, stephen.bates@...rosemi.com,
        logang@...tatee.com, bhelgaas@...gle.com,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] switchtec: Fix an error handling

On Tue, Apr 11, 2017 at 06:32:04AM +0200, Christophe JAILLET wrote:
> 'stuser_create' returns an error pointer in case of error, not NULL.
> So test its return value with IS_ERR.
> 
> Fixes: 74004262f329 ("MicroSemi Switchtec management interface driver")
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>

Since this hasn't been merged to Linus' tree yet, I folded the fix
into the original commit on pci/switchtec and added attribution to
Christophe.

> ---
>  drivers/pci/switch/switchtec.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
> index fcde98161d9a..cc6e085008fb 100644
> --- a/drivers/pci/switch/switchtec.c
> +++ b/drivers/pci/switch/switchtec.c
> @@ -608,7 +608,7 @@ static int switchtec_dev_open(struct inode *inode, struct file *filp)
>  	stdev = container_of(inode->i_cdev, struct switchtec_dev, cdev);
>  
>  	stuser = stuser_create(stdev);
> -	if (!stuser)
> +	if (IS_ERR(stuser))
>  		return PTR_ERR(stuser);
>  
>  	filp->private_data = stuser;
> -- 
> 2.11.0
>