[RFC][PATCH 6/7] generic arch_futex_atomic_op_inuser() doesn't need access_ok()
From: Al Viro
Date: Mon Mar 23 2020 - 14:51:39 EST
From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
uses get_user() and put_user() for memory accesses
Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
---
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