futex: Sanitize futex ops argument types

[karo-tx-linux.git] / arch / x86 / include / asm / futex.h

diff --git a/arch/x86/include/asm/futex.h b/arch/x86/include/asm/futex.h
index 884c0b5676f4b549fded8291b93b2f100464f081..d09bb03653f028e86db69270b9cbb0959adba914 100644 (file)
--- a/arch/x86/include/asm/futex.h
+++ b/arch/x86/include/asm/futex.h
@@ -37,7 +37,7 @@
                       "+m" (*uaddr), "=&r" (tem)               \
                     : "r" (oparg), "i" (-EFAULT), "1" (0))
 
-static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
+static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
 {
        int op = (encoded_op >> 28) & 7;
        int cmp = (encoded_op >> 24) & 15;
@@ -48,7 +48,7 @@ static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
        if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
                oparg = 1 << oparg;
 
-       if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
+       if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
                return -EFAULT;
 
 #if defined(CONFIG_X86_32) && !defined(CONFIG_X86_BSWAP)
@@ -109,8 +109,8 @@ static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
        return ret;
 }
 
-static inline int futex_atomic_cmpxchg_inatomic(int *uval, int __user *uaddr,
-                                               int oldval, int newval)
+static inline int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
+                                               u32 oldval, u32 newval)
 {
        int ret = 0;
 
@@ -120,7 +120,7 @@ static inline int futex_atomic_cmpxchg_inatomic(int *uval, int __user *uaddr,
                return -ENOSYS;
 #endif
 
-       if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
+       if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
                return -EFAULT;
 
        asm volatile("1:\t" LOCK_PREFIX "cmpxchgl %4, %2\n"