* [patch] Hostap: copying wrong data prism2_ioctl_giwaplist()
@ 2013-08-09 9:52 Dan Carpenter
2013-08-09 15:34 ` John W. Linville
0 siblings, 1 reply; 2+ messages in thread
From: Dan Carpenter @ 2013-08-09 9:52 UTC (permalink / raw)
To: Jouni Malinen; +Cc: John W. Linville, linux-wireless, kernel-janitors
We want the data stored in "addr" and "qual", but the extra ampersands
mean we are copying stack data instead.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
Static checker stuff. Untested. Should probably be applied to -stable
as well.
diff --git a/drivers/net/wireless/hostap/hostap_ioctl.c b/drivers/net/wireless/hostap/hostap_ioctl.c
index ac07473..e509030 100644
--- a/drivers/net/wireless/hostap/hostap_ioctl.c
+++ b/drivers/net/wireless/hostap/hostap_ioctl.c
@@ -523,9 +523,9 @@ static int prism2_ioctl_giwaplist(struct net_device *dev,
data->length = prism2_ap_get_sta_qual(local, addr, qual, IW_MAX_AP, 1);
- memcpy(extra, &addr, sizeof(struct sockaddr) * data->length);
+ memcpy(extra, addr, sizeof(struct sockaddr) * data->length);
data->flags = 1; /* has quality information */
- memcpy(extra + sizeof(struct sockaddr) * data->length, &qual,
+ memcpy(extra + sizeof(struct sockaddr) * data->length, qual,
sizeof(struct iw_quality) * data->length);
kfree(addr);
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [patch] Hostap: copying wrong data prism2_ioctl_giwaplist()
2013-08-09 9:52 [patch] Hostap: copying wrong data prism2_ioctl_giwaplist() Dan Carpenter
@ 2013-08-09 15:34 ` John W. Linville
0 siblings, 0 replies; 2+ messages in thread
From: John W. Linville @ 2013-08-09 15:34 UTC (permalink / raw)
To: Dan Carpenter; +Cc: Jouni Malinen, linux-wireless, kernel-janitors
Here I must insert the obligatory question:
Does anyone actually still use the hostap driver??
John
On Fri, Aug 09, 2013 at 12:52:31PM +0300, Dan Carpenter wrote:
> We want the data stored in "addr" and "qual", but the extra ampersands
> mean we are copying stack data instead.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> ---
> Static checker stuff. Untested. Should probably be applied to -stable
> as well.
>
> diff --git a/drivers/net/wireless/hostap/hostap_ioctl.c b/drivers/net/wireless/hostap/hostap_ioctl.c
> index ac07473..e509030 100644
> --- a/drivers/net/wireless/hostap/hostap_ioctl.c
> +++ b/drivers/net/wireless/hostap/hostap_ioctl.c
> @@ -523,9 +523,9 @@ static int prism2_ioctl_giwaplist(struct net_device *dev,
>
> data->length = prism2_ap_get_sta_qual(local, addr, qual, IW_MAX_AP, 1);
>
> - memcpy(extra, &addr, sizeof(struct sockaddr) * data->length);
> + memcpy(extra, addr, sizeof(struct sockaddr) * data->length);
> data->flags = 1; /* has quality information */
> - memcpy(extra + sizeof(struct sockaddr) * data->length, &qual,
> + memcpy(extra + sizeof(struct sockaddr) * data->length, qual,
> sizeof(struct iw_quality) * data->length);
>
> kfree(addr);
>
--
John W. Linville Someday the world will need a hero, and you
linville@tuxdriver.com might be all we have. Be ready.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2013-08-09 9:52 [patch] Hostap: copying wrong data prism2_ioctl_giwaplist() Dan Carpenter
2013-08-09 15:34 ` John W. Linville
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