diff options
| -rw-r--r-- | arch/powerpc/include/asm/uaccess.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h index 9dcb1a658c24..85d6712dc8ed 100644 --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h @@ -214,8 +214,6 @@ do { \ #define __unsafe_put_user_goto(x, ptr, size, label) \ do { \ __typeof__(*(ptr)) __user *__pu_addr = (ptr); \ - if (!is_kernel_addr((unsigned long)__pu_addr)) \ - might_fault(); \ __chk_user_ptr(ptr); \ __put_user_size_goto((x), __pu_addr, (size), label); \ } while (0) @@ -311,7 +309,7 @@ do { \ __typeof__(size) __gu_size = (size); \ \ __chk_user_ptr(__gu_addr); \ - if (!is_kernel_addr((unsigned long)__gu_addr)) \ + if (do_allow && !is_kernel_addr((unsigned long)__gu_addr)) \ might_fault(); \ if (do_allow) \ __get_user_size(__gu_val, __gu_addr, __gu_size, __gu_err); \ @@ -496,6 +494,9 @@ static __must_check inline bool user_access_begin(const void __user *ptr, size_t { if (unlikely(!access_ok(ptr, len))) return false; + + might_fault(); + allow_read_write_user((void __user *)ptr, ptr, len); return true; } @@ -509,6 +510,9 @@ user_read_access_begin(const void __user *ptr, size_t len) { if (unlikely(!access_ok(ptr, len))) return false; + + might_fault(); + allow_read_from_user(ptr, len); return true; } @@ -520,6 +524,9 @@ user_write_access_begin(const void __user *ptr, size_t len) { if (unlikely(!access_ok(ptr, len))) return false; + + might_fault(); + allow_write_to_user((void __user *)ptr, len); return true; } |