diff options
| -rw-r--r-- | xen/include/asm-x86/x86_64/uaccess.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/xen/include/asm-x86/x86_64/uaccess.h b/xen/include/asm-x86/x86_64/uaccess.h index 2450af21e3..2080be86b1 100644 --- a/xen/include/asm-x86/x86_64/uaccess.h +++ b/xen/include/asm-x86/x86_64/uaccess.h @@ -7,7 +7,8 @@ DECLARE_PER_CPU(char, compat_arg_xlat[COMPAT_ARG_XLAT_SIZE]); #define is_compat_arg_xlat_range(addr, size) ({ \ unsigned long __off; \ __off = (unsigned long)(addr) - (unsigned long)COMPAT_ARG_XLAT_VIRT_BASE; \ - (__off | (__off + (unsigned long)(size))) <= PAGE_SIZE; \ + (__off <= COMPAT_ARG_XLAT_SIZE) && \ + ((__off + (unsigned long)(size)) <= COMPAT_ARG_XLAT_SIZE); \ }) /* |