The value of "group" comes from "idx" in __gdm_wimax_event_send():
if (sscanf(e->dev->name, "wm%d", &idx) == 1)
Smatch marks sscanf values as user controlled. It's supposed to be a
number in 0-30 range. We cap the upper bound but allow negatives. Fix
this by making it type u16 instead.
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
diff --git a/drivers/staging/gdm72xx/netlink_k.h b/drivers/staging/gdm72xx/netlink_k.h
index 1fe7198..1914347 100644
--- a/drivers/staging/gdm72xx/netlink_k.h
+++ b/drivers/staging/gdm72xx/netlink_k.h
@@ -20,6 +20,6 @@
struct sock *netlink_init(int unit, void (*cb)(struct net_device *dev, u16 type,
void *msg, int len));
void netlink_exit(struct sock *sock);
-int netlink_send(struct sock *sock, int group, u16 type, void *msg, int len);
+int netlink_send(struct sock *sock, u16 group, u16 type, void *msg, int len);
#endif /* __GDM72XX_NETLINK_K_H__ */
diff --git a/drivers/staging/gdm72xx/netlink_k.c b/drivers/staging/gdm72xx/netlink_k.c
index 4089b17..96c9034 100644
--- a/drivers/staging/gdm72xx/netlink_k.c
+++ b/drivers/staging/gdm72xx/netlink_k.c
@@ -114,7 +114,7 @@ void netlink_exit(struct sock *sock)
netlink_kernel_release(sock);
}
-int netlink_send(struct sock *sock, int group, u16 type, void *msg, int len)
+int netlink_send(struct sock *sock, u16 group, u16 type, void *msg, int len)
{
static u32 seq;
struct sk_buff *skb = NULL;
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