* [PATCH 1/1] staging: fix a potential infinite loop
@ 2022-05-17 9:58 Yuanjun Gong
2022-05-17 10:06 ` Greg KH
2022-05-17 10:06 ` Greg KH
0 siblings, 2 replies; 3+ messages in thread
From: Yuanjun Gong @ 2022-05-17 9:58 UTC (permalink / raw)
To: Yuanjun Gong, Larry Finger, linux-kernel; +Cc: stable
From: Gong Yuanjun <ruc_gongyuanjun@163.com>
In the for-loop in _rtl92e_update_rxcounts(),
i is a u8 counter while priv->rtllib->LinkDetectInfo.SlotNum is
a u16 num, there is a potential infinite loop if SlotNum is larger
than u8_max.
Change the u8 loop counter i into u16.
Signed-off-by: Gong Yuanjun <ruc_gongyuanjun@163.com>
---
drivers/staging/rtl8192e/rtl8192e/rtl_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_core.c b/drivers/staging/rtl8192e/rtl8192e/rtl_core.c
index b9ce71848023..3c5082abc583 100644
--- a/drivers/staging/rtl8192e/rtl8192e/rtl_core.c
+++ b/drivers/staging/rtl8192e/rtl8192e/rtl_core.c
@@ -1342,7 +1342,7 @@ static void _rtl92e_update_rxcounts(struct r8192_priv *priv, u32 *TotalRxBcnNum,
u32 *TotalRxDataNum)
{
u16 SlotIndex;
- u8 i;
+ u16 i;
*TotalRxBcnNum = 0;
*TotalRxDataNum = 0;
--
2.17.1
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH 1/1] staging: fix a potential infinite loop
2022-05-17 9:58 [PATCH 1/1] staging: fix a potential infinite loop Yuanjun Gong
@ 2022-05-17 10:06 ` Greg KH
2022-05-17 10:06 ` Greg KH
1 sibling, 0 replies; 3+ messages in thread
From: Greg KH @ 2022-05-17 10:06 UTC (permalink / raw)
To: Yuanjun Gong; +Cc: Larry Finger, linux-kernel, stable
On Tue, May 17, 2022 at 05:58:09PM +0800, Yuanjun Gong wrote:
> From: Gong Yuanjun <ruc_gongyuanjun@163.com>
>
> In the for-loop in _rtl92e_update_rxcounts(),
> i is a u8 counter while priv->rtllib->LinkDetectInfo.SlotNum is
> a u16 num, there is a potential infinite loop if SlotNum is larger
> than u8_max.
can SlotNum ever get larger than that? If not, then why not just change
that type instead?
And you forgot to list the driver name in the subject line and cc: all
the right people that scripts/get_maintainer.pl will tell you to cc:
Please fix that up and resend a v2.
thanks,
greg k-h
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH 1/1] staging: fix a potential infinite loop
2022-05-17 9:58 [PATCH 1/1] staging: fix a potential infinite loop Yuanjun Gong
2022-05-17 10:06 ` Greg KH
@ 2022-05-17 10:06 ` Greg KH
1 sibling, 0 replies; 3+ messages in thread
From: Greg KH @ 2022-05-17 10:06 UTC (permalink / raw)
To: Yuanjun Gong; +Cc: Larry Finger, linux-kernel, stable
On Tue, May 17, 2022 at 05:58:09PM +0800, Yuanjun Gong wrote:
> From: Gong Yuanjun <ruc_gongyuanjun@163.com>
>
> In the for-loop in _rtl92e_update_rxcounts(),
> i is a u8 counter while priv->rtllib->LinkDetectInfo.SlotNum is
> a u16 num, there is a potential infinite loop if SlotNum is larger
> than u8_max.
>
> Change the u8 loop counter i into u16.
>
> Signed-off-by: Gong Yuanjun <ruc_gongyuanjun@163.com>
> ---
> drivers/staging/rtl8192e/rtl8192e/rtl_core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_core.c b/drivers/staging/rtl8192e/rtl8192e/rtl_core.c
> index b9ce71848023..3c5082abc583 100644
> --- a/drivers/staging/rtl8192e/rtl8192e/rtl_core.c
> +++ b/drivers/staging/rtl8192e/rtl8192e/rtl_core.c
> @@ -1342,7 +1342,7 @@ static void _rtl92e_update_rxcounts(struct r8192_priv *priv, u32 *TotalRxBcnNum,
> u32 *TotalRxDataNum)
> {
> u16 SlotIndex;
> - u8 i;
> + u16 i;
>
> *TotalRxBcnNum = 0;
> *TotalRxDataNum = 0;
> --
> 2.17.1
>
<formletter>
This is not the correct way to submit patches for inclusion in the
stable kernel tree. Please read:
https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.
</formletter>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2022-05-17 10:06 ` Greg KH
2022-05-17 10:06 ` Greg KH
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