On 11/18/2011 04:11 PM, Johannes Berg wrote: > On Fri, 2011-11-18 at 17:09 +0300, Dan Carpenter wrote: >> This function makes the static checkers grumble. The return value of >> snprintf() is the number of bytes which would have been copied if >> there was enough space. In theory, a %u can take take 10 digits so >> len could be larger than 16 and it would be a small information >> leak. >> >> We may as well make the buffer larger as well since that is very >> easy to do. >> >> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> >> >> diff --git a/drivers/net/wireless/ath/ath6kl/debug.c b/drivers/net/wireless/ath/ath6kl/debug.c >> index 9eff0d0..e632008 100644 >> --- a/drivers/net/wireless/ath/ath6kl/debug.c >> +++ b/drivers/net/wireless/ath/ath6kl/debug.c >> @@ -1551,11 +1551,12 @@ static ssize_t ath6kl_listen_int_read(struct file *file, >> size_t count, loff_t *ppos) >> { >> struct ath6kl *ar = file->private_data; >> - char buf[16]; >> + char buf[32]; >> int len; >> >> len = snprintf(buf, sizeof(buf), "%u %u\n", ar->listen_intvl_t, >> ar->listen_intvl_b); >> + len = min(sizeof(buf), len); > > Maybe that should be scnprintf instead then? Yeah, I agree. And most likely debug.c has even more cases where scnprintf() is needed. Kalle -- 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