lkml.org 
[lkml]   [2020]   [Aug]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 6/6] openrisc: uaccess: Add user address space check to access_ok
Date
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>
---
arch/openrisc/include/asm/uaccess.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h
index 85a55359b244..53ddc66abb3f 100644
--- a/arch/openrisc/include/asm/uaccess.h
+++ b/arch/openrisc/include/asm/uaccess.h
@@ -57,7 +57,8 @@ static inline int __range_ok(unsigned long addr, unsigned long size)

#define access_ok(addr, size) \
({ \
- __range_ok((unsigned long)(addr), (size)); \
+ __chk_user_ptr(addr); \
+ __range_ok((__force unsigned long)(addr), (size)); \
})

/*
--
2.26.2
\
 
 \ /
  Last update: 2020-08-04 06:24    [W:0.052 / U:1.192 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site