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Code Issues Releases Wiki Activity

fix the __user misannotations in asm-generic get_user/put_user

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2017-09-04 12:07:24 -04:00
parent b9ea557ee9
commit 1985296a3c
1 changed files with 4 additions and 4 deletions
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8
include/asm-generic/uaccess.h
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@ -75,10 +75,10 @@ static inline int __access_ok(unsigned long addr, unsigned long size)
#define put_user(x, ptr) \
({ \
void *__p = (ptr); \
void __user *__p = (ptr); \
might_fault(); \
access_ok(VERIFY_WRITE, __p, sizeof(*ptr)) ? \
__put_user((x), ((__typeof__(*(ptr)) *)__p)) : \
__put_user((x), ((__typeof__(*(ptr)) __user *)__p)) : \
-EFAULT; \
})
@ -137,10 +137,10 @@ extern int __put_user_bad(void) __attribute__((noreturn));
#define get_user(x, ptr) \
({ \
const void *__p = (ptr); \
const void __user *__p = (ptr); \
might_fault(); \
access_ok(VERIFY_READ, __p, sizeof(*ptr)) ? \
__get_user((x), (__typeof__(*(ptr)) *)__p) : \
__get_user((x), (__typeof__(*(ptr)) __user *)__p) :\
((x) = (__typeof__(*(ptr)))0,-EFAULT); \
})