Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/sh/include/asm/uaccess.h b/arch/sh/include/asm/uaccess.h
index 32eb56e..5fe751a 100644
--- a/arch/sh/include/asm/uaccess.h
+++ b/arch/sh/include/asm/uaccess.h
@@ -16,9 +16,12 @@
* sum := addr + size; carry? --> flag = true;
* if (sum >= addr_limit) flag = true;
*/
-#define __access_ok(addr, size) \
- (__addr_ok((addr) + (size)))
-#define access_ok(type, addr, size) \
+#define __access_ok(addr, size) ({ \
+ unsigned long __ao_a = (addr), __ao_b = (size); \
+ unsigned long __ao_end = __ao_a + __ao_b - !!__ao_b; \
+ __ao_end >= __ao_a && __addr_ok(__ao_end); })
+
+#define access_ok(addr, size) \
(__chk_user_ptr(addr), \
__access_ok((unsigned long __force)(addr), (size)))
@@ -66,7 +69,7 @@
long __gu_err = -EFAULT; \
unsigned long __gu_val = 0; \
const __typeof__(*(ptr)) *__gu_addr = (ptr); \
- if (likely(access_ok(VERIFY_READ, __gu_addr, (size)))) \
+ if (likely(access_ok(__gu_addr, (size)))) \
__get_user_size(__gu_val, __gu_addr, (size), __gu_err); \
(x) = (__force __typeof__(*(ptr)))__gu_val; \
__gu_err; \
@@ -87,7 +90,7 @@
long __pu_err = -EFAULT; \
__typeof__(*(ptr)) __user *__pu_addr = (ptr); \
__typeof__(*(ptr)) __pu_val = x; \
- if (likely(access_ok(VERIFY_WRITE, __pu_addr, size))) \
+ if (likely(access_ok(__pu_addr, size))) \
__put_user_size(__pu_val, __pu_addr, (size), \
__pu_err); \
__pu_err; \
@@ -132,8 +135,7 @@
void __user * __cl_addr = (addr); \
unsigned long __cl_size = (n); \
\
- if (__cl_size && access_ok(VERIFY_WRITE, \
- ((unsigned long)(__cl_addr)), __cl_size)) \
+ if (__cl_size && access_ok(__cl_addr, __cl_size)) \
__cl_size = __clear_user(__cl_addr, __cl_size); \
\
__cl_size; \