From 55b2662ec665cc8b592809a011fe807b05370ab8 Mon Sep 17 00:00:00 2001
From: Stafford Horne <shorne@gmail.com>
Date: Tue, 4 Aug 2020 10:41:54 +0900
Subject: [PATCH] openrisc: uaccess: Add user address space check to access_ok
Now that __user annotations are fixed for openrisc uaccess api's we can
add checking to the access_ok macro. This patch adds the __chk_user_ptr
check, on normal builds the added check is a nop.
Signed-off-by: Stafford Horne <shorne@gmail.com>
Reviewed-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
---
arch/openrisc/include/asm/uaccess.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h
index 85a55359b2448..7c5892f567652 100644
--- a/arch/openrisc/include/asm/uaccess.h
+++ b/arch/openrisc/include/asm/uaccess.h
@@ -57,6 +57,7 @@ static inline int __range_ok(unsigned long addr, unsigned long size)
#define access_ok(addr, size) \
({ \
+ __chk_user_ptr(addr); \
__range_ok((unsigned long)(addr), (size)); \
})
--
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