* [patch] airo: prevent potential underflow in airo_set_freq()
@ 2016-05-10 19:20 Dan Carpenter
2016-05-11 19:02 ` Kalle Valo
0 siblings, 1 reply; 2+ messages in thread
From: Dan Carpenter @ 2016-05-10 19:20 UTC (permalink / raw)
To: Kalle Valo
Cc: Ondrej Zary, Florian Westphal, David S. Miller, Felipe Balbi,
Andy Shevchenko, Johannes Berg, linux-wireless, kernel-janitors
I'm not sure if this can underflow but Smatch complains. It seems
harmless to add a check for negatives.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/net/wireless/cisco/airo.c b/drivers/net/wireless/cisco/airo.c
index 55456f7..ca3cd21 100644
--- a/drivers/net/wireless/cisco/airo.c
+++ b/drivers/net/wireless/cisco/airo.c
@@ -5794,7 +5794,7 @@ static int airo_set_freq(struct net_device *dev,
fwrq->m = ieee80211_frequency_to_channel(f);
}
/* Setting by channel number */
- if((fwrq->m > 1000) || (fwrq->e > 0))
+ if (fwrq->m < 0 || fwrq->m > 1000 || fwrq->e > 0)
rc = -EOPNOTSUPP;
else {
int channel = fwrq->m;
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: airo: prevent potential underflow in airo_set_freq()
2016-05-10 19:20 [patch] airo: prevent potential underflow in airo_set_freq() Dan Carpenter
@ 2016-05-11 19:02 ` Kalle Valo
0 siblings, 0 replies; 2+ messages in thread
From: Kalle Valo @ 2016-05-11 19:02 UTC (permalink / raw)
To: Dan Carpenter
Cc: Ondrej Zary, Florian Westphal, David S. Miller, Felipe Balbi,
Andy Shevchenko, Johannes Berg, linux-wireless, kernel-janitors
Dan Carpenter <dan.carpenter@oracle.com> wrote:
> I'm not sure if this can underflow but Smatch complains. It seems
> harmless to add a check for negatives.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Thanks, 1 patch applied to wireless-drivers-next.git:
03ba4a1b718e airo: prevent potential underflow in airo_set_freq()
--
Sent by pwcli
https://patchwork.kernel.org/patch/9061381/
^ permalink raw reply [flat|nested] 2+ messages in thread
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