From 5287bf726ff8a7353e883b73576710fd53dc88bb Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Sun, 6 Oct 2013 03:32:53 +0300 Subject: [PATCH] USB: cyberjack: fix buggy integer overflow test "old_rdtodo" and "size" are short type. They are type promoted to int and the condition is never true. Signed-off-by: Dan Carpenter Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cyberjack.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c index 781426230d69..6e1b69d0f5f5 100644 --- a/drivers/usb/serial/cyberjack.c +++ b/drivers/usb/serial/cyberjack.c @@ -279,7 +279,7 @@ static void cyberjack_read_int_callback(struct urb *urb) old_rdtodo = priv->rdtodo; - if (old_rdtodo + size < old_rdtodo) { + if (old_rdtodo > SHRT_MAX - size) { dev_dbg(dev, "To many bulk_in urbs to do.\n"); spin_unlock(&priv->lock); goto resubmit; -- 2.11.0