linux-kernel - Re: [PATCH] sh: maple: add support for Maple controller as a joystick

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: <20081220151511.GA6528@console-pimps.org>
Date:	Sat, 20 Dec 2008 15:16:59 +0000
From:	Matt Fleming <matt@...sole-pimps.org>
To:	Adrian McMenamin <adrian@...golddream.dyndns.info>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-sh <linux-sh@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>, Paul Mundt <lethal@...ux-sh.org>
Subject: Re: [PATCH] sh: maple: add support for Maple controller as a
	joystick

On Fri, Dec 19, 2008 at 11:15:42PM +0000, Adrian McMenamin wrote:
> 
> Add support for the SEGA Dreamcast Maple controller as a joystick
> 

[snip]

> +	struct dc_pad *pad = maple_get_drvdata(mapledev);
> +	struct input_dev *dev = pad->dev;
> +	unsigned char *res = mq->recvbuf;
> +
> +	buttons = ~cpu_to_le16(*(unsigned short *)(res + 8));
> +

I may be wrong but shouldn't this use the I/O accessor functions?

> +
> +	pad = kzalloc(sizeof(struct dc_pad), GFP_KERNEL);
> +	idev = input_allocate_device();
> +	if (!pad || !idev){
> +		error = ENOMEM;
> +		goto fail;
> +	}

[snip]

> +fail:
> +	input_free_device(pad->dev);

Possible NULL pointer dereference?
--
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/