The following commit has been merged into the locking/core branch of tip:
Commit-ID: dc88588990945b14d6f7ed45b70ef7b1814a5f3e
Gitweb: https://git.kernel.org/tip/dc88588990945b14d6f7ed45b70ef7b1814a5f3e
Author: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
AuthorDate: Sun, 16 Feb 2020 10:26:50 -05:00
Committer: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
CommitterDate: Fri, 27 Mar 2020 23:58:52 -04:00
[parisc, s390, sparc64] no need for access_ok() in futex handling
access_ok() is always true on those
Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
---
arch/parisc/include/asm/futex.h | 3 ---
arch/s390/include/asm/futex.h | 2 --
arch/sparc/include/asm/futex_64.h | 2 --
3 files changed, 7 deletions(-)
diff --git a/arch/parisc/include/asm/futex.h b/arch/parisc/include/asm/futex.h
index c10cc90..c459f65 100644
--- a/arch/parisc/include/asm/futex.h
+++ b/arch/parisc/include/asm/futex.h
@@ -39,9 +39,6 @@ arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr)
int oldval, ret;
u32 tmp;
- if (!access_ok(uaddr, sizeof(u32)))
- return -EFAULT;
-
_futex_spin_lock_irqsave(uaddr, &flags);
ret = -EFAULT;
diff --git a/arch/s390/include/asm/futex.h b/arch/s390/include/asm/futex.h
index ed965c3..26f9144 100644
--- a/arch/s390/include/asm/futex.h
+++ b/arch/s390/include/asm/futex.h
@@ -28,8 +28,6 @@ static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval,
int oldval = 0, newval, ret;
mm_segment_t old_fs;
- if (!access_ok(uaddr, sizeof(u32)))
- return -EFAULT;
old_fs = enable_sacf_uaccess();
switch (op) {
case FUTEX_OP_SET:
diff --git a/arch/sparc/include/asm/futex_64.h b/arch/sparc/include/asm/futex_64.h
index 84fffaa..72de967 100644
--- a/arch/sparc/include/asm/futex_64.h
+++ b/arch/sparc/include/asm/futex_64.h
@@ -35,8 +35,6 @@ static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval,
{
int oldval = 0, ret, tem;
- if (!access_ok(uaddr, sizeof(u32)))
- return -EFAULT;
if (unlikely((((unsigned long) uaddr) & 0x3UL)))
return -EINVAL;
|