Re: [patch 2/2] asus-wmi: potential NULL dereference in show_call()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Mar 15, 2011 at 8:07 AM, Dan Carpenter <error27@xxxxxxxxx> wrote:
> In the earlier check we assumed that "obj" could be NULL. ÂI looked at
> some of the other places that call evaluate_object() and they check
> for NULL as well.
>
> Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>
> ---
> Can obj actually be NULL here? ÂPerhaps a better fix would be to remove
> the first check.

Yes I think it can.

> diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
> index a038595..efc776c 100644
> --- a/drivers/platform/x86/asus-wmi.c
> +++ b/drivers/platform/x86/asus-wmi.c
> @@ -1343,7 +1343,7 @@ static int show_call(struct seq_file *m, void *data)
> Â Â Â Âelse
> Â Â Â Â Â Â Â Âseq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
> Â Â Â Â Â Â Â Â Â Â Â Â Â asus->debug.dev_id, asus->debug.ctrl_param,
> - Â Â Â Â Â Â Â Â Â Â Â Â Âobj->type);
> + Â Â Â Â Â Â Â Â Â Â Â Â Âobj ? obj->type : -1);

Seems ok, I may change that later if we need to support more types.

Acked-by: Corentin Chary <corentin.chary@xxxxxxxxx>
-- 
Corentin Chary
http://xf.iksaif.net
--
To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Kernel Development]     [Kernel Announce]     [Kernel Newbies]     [Linux Networking Development]     [Share Photos]     [IDE]     [Security]     [Git]     [Netfilter]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Device Mapper]

  Powered by Linux