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authorMichal Simek <monstr@monstr.eu>2011-07-28 15:23:37 +0200
committerMichal Simek <monstr@monstr.eu>2011-10-14 12:24:27 +0200
commit41b7602ed17a6bbb3b3d33087c39ef5c3a5589c7 (patch)
treeb19f00fed217236240de03937741047e51a54016 /arch/microblaze/include
parentebe211254bfa6295f4ab0b33c7c881bdfabbab60 (diff)
downloadlinux-41b7602ed17a6bbb3b3d33087c39ef5c3a5589c7.tar.gz
microblaze: Fix access_ok macro
There is the problem with bit OR (|) because for some combination is addr | size | addr+size equal to seq. For standard kernel setting (kernel starts at 0xC0000000) is seq for user space 0xBFFFFFFF and everything below this limit is fine. But even address 0xBFFFFFFF is fine because it is below kernel space. Signed-off-by: Andrew Fedonczuk <andrew.fedonczuk@ericsson.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch/microblaze/include')
-rw-r--r--arch/microblaze/include/asm/uaccess.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/microblaze/include/asm/uaccess.h b/arch/microblaze/include/asm/uaccess.h
index 5bb95a11880..072b0077abf 100644
--- a/arch/microblaze/include/asm/uaccess.h
+++ b/arch/microblaze/include/asm/uaccess.h
@@ -95,7 +95,7 @@ static inline int ___range_ok(unsigned long addr, unsigned long size)
* - "addr", "addr + size" and "size" are all below the limit
*/
#define access_ok(type, addr, size) \
- (get_fs().seg > (((unsigned long)(addr)) | \
+ (get_fs().seg >= (((unsigned long)(addr)) | \
(size) | ((unsigned long)(addr) + (size))))
/* || printk("access_ok failed for %s at 0x%08lx (size %d), seg 0x%08x\n",