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Diffstat (limited to 'arch/powerpc/include/asm/futex.h')
-rw-r--r--arch/powerpc/include/asm/futex.h5
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/powerpc/include/asm/futex.h b/arch/powerpc/include/asm/futex.h
index bc7d9d06a6d9..f187bb5e524e 100644
--- a/arch/powerpc/include/asm/futex.h
+++ b/arch/powerpc/include/asm/futex.h
@@ -35,8 +35,9 @@ static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval,
{
int oldval = 0, ret;
+ if (!access_ok(uaddr, sizeof(u32)))
+ return -EFAULT;
allow_read_write_user(uaddr, uaddr, sizeof(*uaddr));
- pagefault_disable();
switch (op) {
case FUTEX_OP_SET:
@@ -58,8 +59,6 @@ static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval,
ret = -ENOSYS;
}
- pagefault_enable();
-
*oval = oldval;
prevent_read_write_user(uaddr, uaddr, sizeof(*uaddr));