# This is a BitKeeper generated diff -Nru style patch.
#
# ChangeSet
#   2005/03/04 19:41:29+01:00 kaber@coreworks.de 
#   [TUN]: Fix check for underflow
#   
#   Signed-off-by: Patrick McHardy <kaber@trash.net>
# 
# drivers/net/tun.c
#   2005/03/04 19:41:20+01:00 kaber@coreworks.de +1 -1
#   [TUN]: Fix check for underflow
#   
#   Signed-off-by: Patrick McHardy <kaber@trash.net>
# 
diff -Nru a/drivers/net/tun.c b/drivers/net/tun.c
--- a/drivers/net/tun.c	2005-03-04 19:41:56 +01:00
+++ b/drivers/net/tun.c	2005-03-04 19:41:56 +01:00
@@ -229,7 +229,7 @@
 	size_t len = count;
 
 	if (!(tun->flags & TUN_NO_PI)) {
-		if ((len -= sizeof(pi)) > len)
+		if ((len -= sizeof(pi)) > count)
 			return -EINVAL;
 
 		if(memcpy_fromiovec((void *)&pi, iv, sizeof(pi)))