linux-kernel - Re: [2.6 patch] hwmon/ibmpex.c: fix NULL dereference

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Date:	Wed, 17 Oct 2007 12:39:59 -0700
From:	"Nish Aravamudan" <nish.aravamudan@...il.com>
To:	"Adrian Bunk" <bunk@...nel.org>
Cc:	"Darrick J. Wong" <djwong@...ibm.com>,
	"Mark M. Hoffman" <mhoffman@...htlink.com>,
	lm-sensors@...sensors.org, linux-kernel@...r.kernel.org
Subject: Re: [2.6 patch] hwmon/ibmpex.c: fix NULL dereference

On 10/17/07, Adrian Bunk <bunk@...nel.org> wrote:
> Don't dereference "data" when we know for sure it's NULL.
>
> Spotted by the Coverity checker.
>
> Signed-off-by: Adrian Bunk <bunk@...nel.org>
>
> ---
> 66bec2ef5c6d55fc30ef6ac5bb97fdfcfaf394f2
> diff --git a/drivers/hwmon/ibmpex.c b/drivers/hwmon/ibmpex.c
> index c462824..e14ce3d 100644
> --- a/drivers/hwmon/ibmpex.c
> +++ b/drivers/hwmon/ibmpex.c
> @@ -457,7 +457,7 @@ static void ibmpex_register_bmc(int iface, struct device *dev)
>         data = kzalloc(sizeof(*data), GFP_KERNEL);
>         if (!data) {
>                 printk(KERN_ERR DRVNAME ": Insufficient memory for BMC "
> -                      "interface %d.\n", data->interface);
> +                      "interface.\n");

Hrm but what data->interface would be is specified by the iface
parameter? Just spit that out instead?

Thanks,
Nish
-
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