[RFC][PATCH 6/7] generic arch_futex_atomic_op_inuser() doesn't need access_ok()

Al Viro
2020-03-23T18:51:38Z

From: Al Viro <viro@zeniv.linux.org.uk>

uses get_user() and put_user() for memory accesses

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
include/asm-generic/futex.h | 2 --
1 file changed, 2 deletions(-)

diff --git a/include/asm-generic/futex.h b/include/asm-generic/futex.h
index 3eab7ba912fc..f4c3470480c7 100644
--- a/include/asm-generic/futex.h
+++ b/include/asm-generic/futex.h
@@ -33,8 +33,6 @@ arch_futex_atomic_op_inuser(int op, u32 oparg, int *oval, u32 __user *uaddr)
int oldval, ret;
u32 tmp;

- if (!access_ok(uaddr, sizeof(u32)))
- return -EFAULT;
preempt_disable();

ret = -EFAULT;
--
2.11.0