From 0b7e5936eb3c2939b64eac1161dd21c905fbc5c6 Mon Sep 17 00:00:00 2001
From: Alan Cox <alan@etchedpixels.co.uk>
Date: Sat, 15 Nov 2014 13:56:39 +0000
Subject: [PATCH] usermem: fix error handling

---
 Kernel/usermem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Kernel/usermem.c b/Kernel/usermem.c
index 0cbec967..fae355d6 100644
--- a/Kernel/usermem.c
+++ b/Kernel/usermem.c
@@ -13,7 +13,7 @@ usize_t valaddr(const char *base, usize_t size)
 {
 	if (base < (const char *)PROGBASE || base + size < base)
 		size = 0;
-	if (base + size > (const char *)udata.u_top)
+	else if (base + size > (const char *)udata.u_top)
 		size = (char *)udata.u_top - base;
 	if (size == 0)
 		udata.u_error = EFAULT;
-- 
2.34.1