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From: Alexey Dobriyan <adobriyan@mail.ru>
To: Benoit Boissinot <benoit.boissinot@ens-lyon.org>
Cc: Vojtech Pavlik <vojtech@suse.cz>, Andrew Morton <akpm@osdl.org>,
	Greg KH <greg@kroah.com>,
	torvalds@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [patch] fix NULL pointer deference in ALPS
Date: Mon, 7 Mar 2005 16:06:33 +0200	[thread overview]
Message-ID: <200503071606.33984.adobriyan@mail.ru> (raw)
In-Reply-To: <20050307122432.GG8138@ens-lyon.fr>

On Monday 07 March 2005 14:24, Benoit Boissinot wrote:

> alps_get_model returns a pointer or NULL in case of errors, so we need to
> check for the results being NULL, not negative.

2.6.11-bk2:	int alps_get_model(struct psmouse *psmouse)
	takes 1 argument, returns -1 on error

2.6.11-mm1:	static struct alps_model_info *alps_get_model(struct psmouse *psmouse, int *version)
	takes 2 arguments, returns NULL on error

> --- linux-clean/drivers/input/mouse/alps.c
> +++ linux-vanilla/drivers/input/mouse/alps.c

> -	if ((model = alps_get_model(psmouse)) < 0)
> +	if (!(model = alps_get_model(psmouse)))

> -	if ((model = alps_get_model(psmouse)) < 0)
> +	if (!(model = alps_get_model(psmouse)))

> -	if (alps_get_model(psmouse) < 0)
> +	if (!alps_get_model(psmouse))

To what version of kernel this patch should be applied?

	Alexey

  parent reply	other threads:[~2005-03-07 13:06 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-03-07 12:24 Benoit Boissinot
2005-03-07 13:10 ` Vojtech Pavlik
2005-03-07 13:11   ` Vojtech Pavlik
2005-03-07 14:06 ` Alexey Dobriyan [this message]
2005-03-07 13:12   ` Benoit Boissinot

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